test: enable linting for tests

Enable linting for the test directory. A number of changes was made so
all tests conform the current rules used by lib and src directories. The
only exception for tests is that unreachable (dead) code is allowed.

test-fs-non-number-arguments-throw had to be excluded from the changes
because of a weird issue on Windows CI.

PR-URL: https://github.com/nodejs/io.js/pull/1721
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>

981 files changed, 2268 insertions, 1123 deletions

diff --git a/test/.eslintrc b/test/.eslintrc
new file mode 100644
index 0000000000..d5d95584ea
--- /dev/null
+++ b/test/.eslintrc
@@ -0,0 +1,5 @@
+## Test-specific linter rules
+
+rules:
+  ## allow unreachable code
+  no-unreachable: 0
diff --git a/test/addons/async-hello-world/test.js b/test/addons/async-hello-world/test.js
index 83f5e7206e..a284a019f0 100644
--- a/test/addons/async-hello-world/test.js
+++ b/test/addons/async-hello-world/test.js
@@ -1,15 +1,16 @@
+'use strict';
 var assert = require('assert');
 var binding = require('./build/Release/binding');
 var called = false;
 
-process.on('exit', function () {
+process.on('exit', function() {
   assert(called);
 });
 
-binding(5, function (err, val) {
+binding(5, function(err, val) {
   assert.equal(null, err);
   assert.equal(10, val);
-  process.nextTick(function () {
+  process.nextTick(function() {
     called = true;
   });
 });
diff --git a/test/addons/at-exit/test.js b/test/addons/at-exit/test.js
index 4466b898af..c36f59b976 100644
--- a/test/addons/at-exit/test.js
+++ b/test/addons/at-exit/test.js
@@ -1 +1,2 @@
+'use strict';
 var binding = require('./build/Release/binding');
diff --git a/test/addons/hello-world-function-export/test.js b/test/addons/hello-world-function-export/test.js
index 238e105381..1056386583 100644
--- a/test/addons/hello-world-function-export/test.js
+++ b/test/addons/hello-world-function-export/test.js
@@ -1,3 +1,4 @@
+'use strict';
 var assert = require('assert');
 var binding = require('./build/Release/binding');
 assert.equal('world', binding());
diff --git a/test/addons/hello-world/test.js b/test/addons/hello-world/test.js
index 18008db581..c0492292fd 100644
--- a/test/addons/hello-world/test.js
+++ b/test/addons/hello-world/test.js
@@ -1,3 +1,4 @@
+'use strict';
 var assert = require('assert');
 var binding = require('./build/Release/binding');
 assert.equal('world', binding.hello());
diff --git a/test/addons/repl-domain-abort/test.js b/test/addons/repl-domain-abort/test.js
index f0d968d173..a520df0380 100644
--- a/test/addons/repl-domain-abort/test.js
+++ b/test/addons/repl-domain-abort/test.js
@@ -1,3 +1,4 @@
+'use strict';
 var assert = require('assert');
 var repl = require('repl');
 var stream = require('stream');
diff --git a/test/addons/smalloc-alloc/test.js b/test/addons/smalloc-alloc/test.js
index 47197be631..76648e04c4 100644
--- a/test/addons/smalloc-alloc/test.js
+++ b/test/addons/smalloc-alloc/test.js
@@ -1,3 +1,4 @@
+'use strict';
 var assert = require('assert');
 var binding = require('./build/Release/binding');
 var obj = binding.alloc(16);
diff --git a/test/common.js b/test/common.js
index ec0b387328..94d6f21095 100644
--- a/test/common.js
+++ b/test/common.js
@@ -1,3 +1,4 @@
+'use strict';
 var path = require('path');
 var fs = require('fs');
 var assert = require('assert');
@@ -107,8 +108,8 @@ if (process.env.NODE_COMMON_PIPE) {
 if (process.platform === 'win32') {
   exports.faketimeCli = false;
 } else {
-  exports.faketimeCli = path.join(__dirname, "..", "tools", "faketime", "src",
-    "faketime");
+  exports.faketimeCli = path.join(__dirname, '..', 'tools', 'faketime', 'src',
+                                  'faketime');
 }
 
 var ifaces = os.networkInterfaces();
@@ -307,7 +308,7 @@ exports.mustCall = function(fn, expected) {
   var context = {
     expected: expected,
     actual: 0,
-    stack: (new Error).stack,
+    stack: (new Error()).stack,
     name: fn.name || '<anonymous>'
   };
 
@@ -345,11 +346,11 @@ if (process.platform === 'win32') {
  */
 exports.getServiceName = function getServiceName(port, protocol) {
   if (port == null) {
-    throw new Error("Missing port number");
+    throw new Error('Missing port number');
   }
 
   if (typeof protocol !== 'string') {
-    throw new Error("Protocol must be a string");
+    throw new Error('Protocol must be a string');
   }
 
   /*
@@ -360,10 +361,10 @@ exports.getServiceName = function getServiceName(port, protocol) {
 
   try {
     /*
-     * I'm not a big fan of readFileSync, but reading /etc/services asynchronously
-     * here would require implementing a simple line parser, which seems overkill
-     * for a simple utility function that is not running concurrently with any
-     * other one.
+     * I'm not a big fan of readFileSync, but reading /etc/services
+     * asynchronously here would require implementing a simple line parser,
+     * which seems overkill for a simple utility function that is not running
+     * concurrently with any other one.
      */
     var servicesContent = fs.readFileSync(etcServicesFileName,
       { encoding: 'utf8'});
@@ -380,7 +381,7 @@ exports.getServiceName = function getServiceName(port, protocol) {
   }
 
   return serviceName;
-}
+};
 
 exports.hasMultiLocalhost = function hasMultiLocalhost() {
   var TCP = process.binding('tcp_wrap').TCP;
@@ -397,7 +398,7 @@ exports.isValidHostname = function(str) {
     '(\\.([a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9\\-]{0,61}[a-zA-Z0-9]))*$');
 
   return !!str.match(re) && str.length <= 255;
-}
+};
 
 exports.fileExists = function(pathname) {
   try {
diff --git a/test/debugger/helper-debugger-repl.js b/test/debugger/helper-debugger-repl.js
index c3f219874e..714a22c2a2 100644
--- a/test/debugger/helper-debugger-repl.js
+++ b/test/debugger/helper-debugger-repl.js
@@ -1,3 +1,4 @@
+'use strict';
 process.env.NODE_DEBUGGER_TIMEOUT = 2000;
 var common = require('../common');
 var assert = require('assert');
@@ -55,7 +56,7 @@ function startDebugger(scriptToDebug) {
     quitCalled = true;
     child.stdin.write('quit');
     child.kill('SIGTERM');
-  }
+  };
 
   setTimeout(function() {
     console.error('dying badly buffer=%j', buffer);
diff --git a/test/debugger/test-debug-break-on-uncaught.js b/test/debugger/test-debug-break-on-uncaught.js
index 57095d93ab..397c4225d2 100644
--- a/test/debugger/test-debug-break-on-uncaught.js
+++ b/test/debugger/test-debug-break-on-uncaught.js
@@ -1,3 +1,4 @@
+'use strict';
 var path = require('path');
 var assert = require('assert');
 var spawn = require('child_process').spawn;
@@ -44,7 +45,7 @@ function runScenario(scriptName, throwsInFile, throwsOnLine, next) {
   child.on('close', function() {
     assert(asserted, 'debugger did not pause on exception');
     if (next) next();
-  })
+  });
 
   var exceptions = [];
 
diff --git a/test/debugger/test-debugger-client.js b/test/debugger/test-debugger-client.js
index 4bb27c277e..972c94707e 100644
--- a/test/debugger/test-debugger-client.js
+++ b/test/debugger/test-debugger-client.js
@@ -1,3 +1,4 @@
+'use strict';
 process.env.NODE_DEBUGGER_TIMEOUT = 2000;
 var common = require('../common');
 var assert = require('assert');
@@ -66,7 +67,7 @@ var d = 'Content-Length: 466\r\n\r\n' +
         '{"seq":10,"type":"event","event":"afterCompile","success":true,' +
         '"body":{"script":{"handle":1,"type":"script","name":"dns.js",' +
         '"id":34,"lineOffset":0,"columnOffset":0,"lineCount":241,' +
-        '"sourceStart":"(function (module, exports, require) {' +
+        '"sourceStart":"(function(module, exports, require) {' +
         'var dns = process.binding(\'cares\')' +
         ';\\nvar ne","sourceLength":6137,"scriptType":2,"compilationType":0,' +
         '"context":{"ref":0},"text":"dns.js (lines: 241)"}},"refs":' +
@@ -127,8 +128,8 @@ addTest(function(client, done) {
 
 
 var connectCount = 0;
-var script = 'setTimeout(function () { console.log("blah"); });' +
-             'setInterval(function () {}, 1000000);';
+var script = 'setTimeout(function() { console.log("blah"); });' +
+             'setInterval(function() {}, 1000000);';
 
 var nodeProcess;
 
diff --git a/test/debugger/test-debugger-debug-brk.js b/test/debugger/test-debugger-debug-brk.js
index 7bf7d639f5..3b54f853bc 100644
--- a/test/debugger/test-debugger-debug-brk.js
+++ b/test/debugger/test-debugger-debug-brk.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var spawn = require('child_process').spawn;
diff --git a/test/debugger/test-debugger-remote.js b/test/debugger/test-debugger-remote.js
index 641199a171..abb67c19cb 100644
--- a/test/debugger/test-debugger-remote.js
+++ b/test/debugger/test-debugger-remote.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var spawn = require('child_process').spawn;
diff --git a/test/debugger/test-debugger-repl-break-in-module.js b/test/debugger/test-debugger-repl-break-in-module.js
index 8d33d12643..995f6fe0db 100644
--- a/test/debugger/test-debugger-repl-break-in-module.js
+++ b/test/debugger/test-debugger-repl-break-in-module.js
@@ -1,3 +1,4 @@
+'use strict';
 var repl = require('./helper-debugger-repl.js');
 
 repl.startDebugger('break-in-module/main.js');
diff --git a/test/debugger/test-debugger-repl-restart.js b/test/debugger/test-debugger-repl-restart.js
index 9d83d67188..d3b2c169de 100644
--- a/test/debugger/test-debugger-repl-restart.js
+++ b/test/debugger/test-debugger-repl-restart.js
@@ -1,3 +1,4 @@
+'use strict';
 var repl = require('./helper-debugger-repl.js');
 
 repl.startDebugger('breakpoints.js');
@@ -7,7 +8,7 @@ var linesWithBreakpoint = [
 // We slice here, because addTest will change the given array.
 repl.addTest('sb(6)', linesWithBreakpoint.slice());
 
-var initialLines = repl.initialLines.slice()
+var initialLines = repl.initialLines.slice();
 initialLines.splice(2, 0, /Restoring/, /Warning/);
 
 // Restart the debugged script
diff --git a/test/debugger/test-debugger-repl-term.js b/test/debugger/test-debugger-repl-term.js
index a42a253c5a..741adf682a 100644
--- a/test/debugger/test-debugger-repl-term.js
+++ b/test/debugger/test-debugger-repl-term.js
@@ -1,3 +1,4 @@
+'use strict';
 process.env.NODE_FORCE_READLINE = 1;
 
 var repl = require('./helper-debugger-repl.js');
diff --git a/test/debugger/test-debugger-repl-utf8.js b/test/debugger/test-debugger-repl-utf8.js
index 0fccf2477b..c32216e5d6 100644
--- a/test/debugger/test-debugger-repl-utf8.js
+++ b/test/debugger/test-debugger-repl-utf8.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var script = common.fixturesDir + '/breakpoints_utf8.js';
 process.env.NODE_DEBUGGER_TEST_SCRIPT = script;
diff --git a/test/debugger/test-debugger-repl.js b/test/debugger/test-debugger-repl.js
index 788ea9cb6a..2e44da55d7 100644
--- a/test/debugger/test-debugger-repl.js
+++ b/test/debugger/test-debugger-repl.js
@@ -1,3 +1,4 @@
+'use strict';
 var repl = require('./helper-debugger-repl.js');
 
 repl.startDebugger('breakpoints.js');
diff --git a/test/disabled/GH-670.js b/test/disabled/GH-670.js
index af65bbdc0f..28f90a72ad 100644
--- a/test/disabled/GH-670.js
+++ b/test/disabled/GH-670.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var https = require('https');
diff --git a/test/disabled/test-cat.js b/test/disabled/test-cat.js
index 02d2d41a66..e37820ba4b 100644
--- a/test/disabled/test-cat.js
+++ b/test/disabled/test-cat.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common.js');
 var assert = require('assert');
 var http = require('http');
diff --git a/test/disabled/test-child-process-custom-fds.js b/test/disabled/test-child-process-custom-fds.js
index d64586c508..1208768472 100644
--- a/test/disabled/test-child-process-custom-fds.js
+++ b/test/disabled/test-child-process-custom-fds.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/disabled/test-child-process-customfd-bounded.js b/test/disabled/test-child-process-customfd-bounded.js
index 203e6acaf3..98da4ef4d1 100644
--- a/test/disabled/test-child-process-customfd-bounded.js
+++ b/test/disabled/test-child-process-customfd-bounded.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 
 var bigish = Array(200);
diff --git a/test/disabled/test-child-process-uid-gid.js b/test/disabled/test-child-process-uid-gid.js
index 5ab570b813..90708bc2ca 100644
--- a/test/disabled/test-child-process-uid-gid.js
+++ b/test/disabled/test-child-process-uid-gid.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var spawn = require('child_process').spawn;
diff --git a/test/disabled/test-debug-brk-file.js b/test/disabled/test-debug-brk-file.js
index ca2af1b712..4b5823f56a 100644
--- a/test/disabled/test-debug-brk-file.js
+++ b/test/disabled/test-debug-brk-file.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var spawn = require('child_process').spawn;
diff --git a/test/disabled/test-debug-brk-no-arg.js b/test/disabled/test-debug-brk-no-arg.js
index 547cd1b287..7e678a76df 100644
--- a/test/disabled/test-debug-brk-no-arg.js
+++ b/test/disabled/test-debug-brk-no-arg.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var spawn = require('child_process').spawn;
diff --git a/test/disabled/test-dgram-multicast.js b/test/disabled/test-dgram-multicast.js
index d66bd63e50..f2668d24c9 100644
--- a/test/disabled/test-dgram-multicast.js
+++ b/test/disabled/test-dgram-multicast.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/disabled/test-dgram-send-error.js b/test/disabled/test-dgram-send-error.js
index 00901dd563..1ed594a389 100644
--- a/test/disabled/test-dgram-send-error.js
+++ b/test/disabled/test-dgram-send-error.js
@@ -1,3 +1,4 @@
+'use strict';
 // Some operating systems report errors when an UDP message is sent to an
 // unreachable host. This error can be reported by sendto() and even by
 // recvfrom(). Node should not propagate this error to the user.
diff --git a/test/disabled/test-dgram-unix-anon.js b/test/disabled/test-dgram-unix-anon.js
index 1a8b5e3a57..417ff8c291 100644
--- a/test/disabled/test-dgram-unix-anon.js
+++ b/test/disabled/test-dgram-unix-anon.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/disabled/test-dgram-unix.js b/test/disabled/test-dgram-unix.js
index f2a24a9c36..d8ebd81a92 100644
--- a/test/disabled/test-dgram-unix.js
+++ b/test/disabled/test-dgram-unix.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/disabled/test-eio-race.js b/test/disabled/test-eio-race.js
index b9e14f76b2..32585894d0 100644
--- a/test/disabled/test-eio-race.js
+++ b/test/disabled/test-eio-race.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
@@ -36,7 +37,7 @@ function tryToKillEventLoop() {
 
 // Generate a lot of thread pool events
 var pos = 0;
-fs.open(filename, 'r', 0666, function(err, fd) {
+fs.open(filename, 'r', 0o666, function(err, fd) {
   if (err) throw err;
 
   function readChunk() {
diff --git a/test/disabled/test-eio-race2.js b/test/disabled/test-eio-race2.js
index 487486a15d..16c0468775 100644
--- a/test/disabled/test-eio-race2.js
+++ b/test/disabled/test-eio-race2.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var path = require('path');
diff --git a/test/disabled/test-eio-race3.js b/test/disabled/test-eio-race3.js
index 820128ae46..872a105dd5 100644
--- a/test/disabled/test-eio-race3.js
+++ b/test/disabled/test-eio-race3.js
@@ -1,3 +1,4 @@
+'use strict';
 /* XXX Can this test be modified to not call the now-removed wait()? */
 
 var common = require('../common');
diff --git a/test/disabled/test-eio-race4.js b/test/disabled/test-eio-race4.js
index e8a2e59136..d22c4225b1 100644
--- a/test/disabled/test-eio-race4.js
+++ b/test/disabled/test-eio-race4.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var fs = require('fs');
diff --git a/test/disabled/test-fs-largefile.js b/test/disabled/test-fs-largefile.js
index 21406e3aad..498bfa45a0 100644
--- a/test/disabled/test-fs-largefile.js
+++ b/test/disabled/test-fs-largefile.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var path = require('path'),
diff --git a/test/disabled/test-http-abort-stream-end.js b/test/disabled/test-http-abort-stream-end.js
index b0a23d92de..cfa531cedf 100644
--- a/test/disabled/test-http-abort-stream-end.js
+++ b/test/disabled/test-http-abort-stream-end.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/disabled/test-http-agent2.js b/test/disabled/test-http-agent2.js
index c1ccd70a1e..928194757b 100644
--- a/test/disabled/test-http-agent2.js
+++ b/test/disabled/test-http-agent2.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
diff --git a/test/disabled/test-http-big-proxy-responses.js b/test/disabled/test-http-big-proxy-responses.js
index fe70473f58..9727edbb80 100644
--- a/test/disabled/test-http-big-proxy-responses.js
+++ b/test/disabled/test-http-big-proxy-responses.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var util = require('util'),
diff --git a/test/disabled/test-http-head-request.js b/test/disabled/test-http-head-request.js
index 2dfe20bc3d..c6fa78fe2b 100644
--- a/test/disabled/test-http-head-request.js
+++ b/test/disabled/test-http-head-request.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/disabled/test-http-stress.js b/test/disabled/test-http-stress.js
index 09a0b7e48a..e4b51e07ca 100644
--- a/test/disabled/test-http-stress.js
+++ b/test/disabled/test-http-stress.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/disabled/test-http-tls.js b/test/disabled/test-http-tls.js
index 384849d00d..867c3a076a 100644
--- a/test/disabled/test-http-tls.js
+++ b/test/disabled/test-http-tls.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/disabled/test-https-loop-to-google.js b/test/disabled/test-https-loop-to-google.js
index cb29f2c226..e498895ed2 100644
--- a/test/disabled/test-https-loop-to-google.js
+++ b/test/disabled/test-https-loop-to-google.js
@@ -1,3 +1,4 @@
+'use strict';
 // Failing test for https
 
 // Will fail with "socket hang up" for 4 out of 10 requests
@@ -7,26 +8,20 @@
 var common = require('../common');
 var https = require('https');
 
-for (var i = 0; i < 10; ++i)
-{
-  https.get(
-      {
-        host: 'www.google.com',
-        path: '/accounts/o8/id',
-        port: 443
-      }, function(res)
-      {
-        var data = '';
-        res.on('data', function(chunk)
-            {
-              data += chunk;
-            });
-        res.on('end', function()
-            {
-              console.log(res.statusCode);
-            });
-      }).on('error', function(error)
-      {
-        console.log(error);
-      });
+for (var i = 0; i < 10; ++i) {
+  https.get({
+    host: 'www.google.com',
+    path: '/accounts/o8/id',
+    port: 443
+  }, function(res) {
+    var data = '';
+    res.on('data', function(chunk) {
+      data += chunk;
+    });
+    res.on('end', function() {
+      console.log(res.statusCode);
+    });
+  }).on('error', function(error) {
+    console.log(error);
+  });
 }
diff --git a/test/disabled/test-idle-watcher.js b/test/disabled/test-idle-watcher.js
index b1038d56fd..6cf78ad174 100644
--- a/test/disabled/test-idle-watcher.js
+++ b/test/disabled/test-idle-watcher.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/disabled/test-net-fd-passing.js b/test/disabled/test-net-fd-passing.js
index 7b73056393..380032a2e6 100644
--- a/test/disabled/test-net-fd-passing.js
+++ b/test/disabled/test-net-fd-passing.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var net = require('net');
diff --git a/test/disabled/test-net-tls-pummel.js b/test/disabled/test-net-tls-pummel.js
index 0312d70ea7..0fb63d33f4 100644
--- a/test/disabled/test-net-tls-pummel.js
+++ b/test/disabled/test-net-tls-pummel.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/disabled/test-net-tls.js b/test/disabled/test-net-tls.js
index 9783b7ee3c..01797fc689 100644
--- a/test/disabled/test-net-tls.js
+++ b/test/disabled/test-net-tls.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var fs = require('fs');
diff --git a/test/disabled/test-process-title.js b/test/disabled/test-process-title.js
index 1cd361dd87..629d78d723 100644
--- a/test/disabled/test-process-title.js
+++ b/test/disabled/test-process-title.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var spawn = require('child_process').spawn;
diff --git a/test/disabled/test-readline.js b/test/disabled/test-readline.js
index 1572036a87..9bb9943bd2 100644
--- a/test/disabled/test-readline.js
+++ b/test/disabled/test-readline.js
@@ -1,3 +1,4 @@
+'use strict';
 // Can't test this when 'make test' doesn't assign a tty to the stdout.
 // Yet another use-case for require('tty').spawn ?
 var common = require('../common');
@@ -36,10 +37,10 @@ var readlineFakeStream = function() {
         }
       });
   var _stdoutWrite = process.stdout.write;
-  process.stdout.write = function (data) {
+  process.stdout.write = function(data) {
     data.split('').forEach(rl.written_bytes.push.bind(rl.written_bytes));
     _stdoutWrite.apply(this, arguments);
-  }
+  };
   rl.written_bytes = written_bytes;
   return rl;
 };
@@ -49,7 +50,7 @@ var written_bytes_length, refreshed;
 
 rl.write('foo');
 assert.equal(3, rl.cursor);
-[key.xterm, key.rxvt, key.gnome, key.putty].forEach(function (key) {
+[key.xterm, key.rxvt, key.gnome, key.putty].forEach(function(key) {
   rl.write.apply(rl, key.home);
   assert.equal(0, rl.cursor);
   rl.write.apply(rl, key.end);
@@ -72,7 +73,7 @@ rl.write.apply(rl, key.xterm.home);
   {cursor: 7, key: key.xterm.metab},
   {cursor: 4, key: key.xterm.metab},
   {cursor: 0, key: key.xterm.metab},
-].forEach(function (action) {
+].forEach(function(action) {
   written_bytes_length = rl.written_bytes.length;
   rl.write.apply(rl, action.key);
   assert.equal(action.cursor, rl.cursor);
@@ -83,7 +84,14 @@ rl.write.apply(rl, key.xterm.home);
 rl = readlineFakeStream();
 rl.write('foo bar.hop/zoo');
 rl.write.apply(rl, key.xterm.home);
-['bar.hop/zoo', '.hop/zoo', 'hop/zoo', '/zoo', 'zoo', ''].forEach(function (expectedLine) {
+[
+  'bar.hop/zoo',
+  '.hop/zoo',
+  'hop/zoo',
+  '/zoo',
+  'zoo',
+  ''
+].forEach(function(expectedLine) {
   rl.write.apply(rl, key.xterm.metad);
   assert.equal(0, rl.cursor);
   assert.equal(expectedLine, rl.line);
diff --git a/test/disabled/test-remote-module-loading.js b/test/disabled/test-remote-module-loading.js
index c4d90fb80d..d589ecf35b 100644
--- a/test/disabled/test-remote-module-loading.js
+++ b/test/disabled/test-remote-module-loading.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/disabled/test-sendfd.js b/test/disabled/test-sendfd.js
index 0e1dd6f1bf..4eefbeab54 100644
--- a/test/disabled/test-sendfd.js
+++ b/test/disabled/test-sendfd.js
@@ -1,3 +1,4 @@
+'use strict';
 // Test sending and receiving a file descriptor.
 //
 // This test is pretty complex. It ends up spawning test/fixtures/recvfd.js
diff --git a/test/disabled/test-setuidgid.js b/test/disabled/test-setuidgid.js
index 90923b922d..bf3726ab00 100644
--- a/test/disabled/test-setuidgid.js
+++ b/test/disabled/test-setuidgid.js
@@ -1,3 +1,4 @@
+'use strict';
 // Requires special privileges
 var common = require('../common');
 var assert = require('assert');
diff --git a/test/disabled/test-tls-large-push.js b/test/disabled/test-tls-large-push.js
index a5e206e477..80a3cf5220 100644
--- a/test/disabled/test-tls-large-push.js
+++ b/test/disabled/test-tls-large-push.js
@@ -1,3 +1,5 @@
+/* eslint-disable no-debugger */
+'use strict';
 // Server sends a large string. Client counts bytes and pauses every few
 // seconds. Makes sure that pause and resume work properly.
 var common = require('../common');
@@ -39,7 +41,7 @@ server.listen(common.PORT, function() {
 
     /*
     client.pause();
-    process.nextTick(function () {
+    process.nextTick(function() {
       client.resume();
     });
     */
diff --git a/test/disabled/test-tls-server.js b/test/disabled/test-tls-server.js
index 20cc3f9fc7..c1e62bf01c 100644
--- a/test/disabled/test-tls-server.js
+++ b/test/disabled/test-tls-server.js
@@ -1,3 +1,4 @@
+'use strict';
 // Example of new TLS API. Test with:
 //
 //     $> openssl s_client -connect localhost:12346 \
diff --git a/test/disabled/test-tty-stdio.js b/test/disabled/test-tty-stdio.js
index 0d963958ab..57d7ee6775 100644
--- a/test/disabled/test-tty-stdio.js
+++ b/test/disabled/test-tty-stdio.js
@@ -1,3 +1,4 @@
+'use strict';
 // Can't test this when 'make test' doesn't assign a tty to the stdout.
 var common = require('../common');
 var assert = require('assert');
diff --git a/test/disabled/tls-client.js b/test/disabled/tls-client.js
index 48c715b29b..b47b681f95 100644
--- a/test/disabled/tls-client.js
+++ b/test/disabled/tls-client.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var tls = require('tls');
 var fs = require('fs');
diff --git a/test/disabled/tls_client.js b/test/disabled/tls_client.js
index 65d18dd7f2..425cb54a59 100644
--- a/test/disabled/tls_client.js
+++ b/test/disabled/tls_client.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/disabled/tls_server.js b/test/disabled/tls_server.js
index 1174b8f6d0..b3f43b564d 100644
--- a/test/disabled/tls_server.js
+++ b/test/disabled/tls_server.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/fixtures/child-process-persistent.js b/test/fixtures/child-process-persistent.js
index 226ab3329d..45a50f5a26 100644
--- a/test/fixtures/child-process-persistent.js
+++ b/test/fixtures/child-process-persistent.js
@@ -1 +1 @@
-setInterval(function () {}, 500);
+setInterval(function() {}, 500);
diff --git a/test/gc/node_modules/weak/lib/weak.js b/test/gc/node_modules/weak/lib/weak.js
index 8081a76c45..535caf615c 100644
--- a/test/gc/node_modules/weak/lib/weak.js
+++ b/test/gc/node_modules/weak/lib/weak.js
@@ -1,3 +1,4 @@
+'use strict';
 var bindings
 try {
   bindings = require('../build/Release/weakref.node')
@@ -13,6 +14,6 @@ module.exports = bindings.create
 // backwards-compat with node-weakref
 bindings.weaken = bindings.create
 
-Object.keys(bindings).forEach(function (name) {
+Object.keys(bindings).forEach(function(name) {
   module.exports[name] = bindings[name]
 })
diff --git a/test/gc/test-http-client-connaborted.js b/test/gc/test-http-client-connaborted.js
index c58b4d5f75..20a4b38481 100644
--- a/test/gc/test-http-client-connaborted.js
+++ b/test/gc/test-http-client-connaborted.js
@@ -1,3 +1,4 @@
+'use strict';
 // just like test/gc/http-client.js,
 // but aborting every connection that comes in.
 
@@ -15,7 +16,7 @@ var http  = require('http'),
     assert = require('assert'),
     PORT = common.PORT;
 
-console.log('We should do '+ todo +' requests');
+console.log('We should do ' + todo + ' requests');
 
 var http = require('http');
 var server = http.createServer(serverHandler);
@@ -25,9 +26,9 @@ function getall() {
   if (count >= todo)
     return;
 
-  (function(){
+  (function() {
     function cb(res) {
-      done+=1;
+      done += 1;
       statusLater();
     }
 
@@ -39,7 +40,7 @@ function getall() {
 
     count++;
     weak(req, afterGC);
-  })()
+  })();
 
   setImmediate(getall);
 }
@@ -47,7 +48,7 @@ function getall() {
 for (var i = 0; i < 10; i++)
   getall();
 
-function afterGC(){
+function afterGC() {
   countGC ++;
 }
 
diff --git a/test/gc/test-http-client-onerror.js b/test/gc/test-http-client-onerror.js
index bf9fb7c1fb..98d046e180 100644
--- a/test/gc/test-http-client-onerror.js
+++ b/test/gc/test-http-client-onerror.js
@@ -1,3 +1,4 @@
+'use strict';
 // just like test/gc/http-client.js,
 // but with an on('error') handler that does nothing.
 
@@ -17,7 +18,7 @@ var http  = require('http'),
     assert = require('assert'),
     PORT = common.PORT;
 
-console.log('We should do '+ todo +' requests');
+console.log('We should do ' + todo + ' requests');
 
 var http = require('http');
 var server = http.createServer(serverHandler);
@@ -27,10 +28,10 @@ function getall() {
   if (count >= todo)
     return;
 
-  (function(){
+  (function() {
     function cb(res) {
       res.resume();
-      done+=1;
+      done += 1;
       statusLater();
     }
     function onerror(er) {
@@ -45,7 +46,7 @@ function getall() {
 
     count++;
     weak(req, afterGC);
-  })()
+  })();
 
   setImmediate(getall);
 }
@@ -53,7 +54,7 @@ function getall() {
 for (var i = 0; i < 10; i++)
   getall();
 
-function afterGC(){
+function afterGC() {
   countGC ++;
 }
 
diff --git a/test/gc/test-http-client-timeout.js b/test/gc/test-http-client-timeout.js
index 727d133f71..5bb2d2b05b 100644
--- a/test/gc/test-http-client-timeout.js
+++ b/test/gc/test-http-client-timeout.js
@@ -1,10 +1,11 @@
+'use strict';
 // just like test/gc/http-client.js,
 // but with a timeout set
 
 function serverHandler(req, res) {
-  setTimeout(function () {
+  setTimeout(function() {
     req.resume();
-    res.writeHead(200)
+    res.writeHead(200);
     res.end('hello\n');
   }, 100);
 }
@@ -19,7 +20,7 @@ var http  = require('http'),
     assert = require('assert'),
     PORT = common.PORT;
 
-console.log('We should do '+ todo +' requests');
+console.log('We should do ' + todo + ' requests');
 
 var http = require('http');
 var server = http.createServer(serverHandler);
@@ -29,10 +30,10 @@ function getall() {
   if (count >= todo)
     return;
 
-  (function(){
+  (function() {
     function cb(res) {
       res.resume();
-      done+=1;
+      done += 1;
       statusLater();
     }
 
@@ -42,13 +43,13 @@ function getall() {
       port: PORT
     }, cb);
     req.on('error', cb);
-    req.setTimeout(10, function(){
-      console.log('timeout (expected)')
+    req.setTimeout(10, function() {
+      console.log('timeout (expected)');
     });
 
     count++;
     weak(req, afterGC);
-  })()
+  })();
 
   setImmediate(getall);
 }
@@ -56,7 +57,7 @@ function getall() {
 for(var i = 0; i < 10; i++)
   getall();
 
-function afterGC(){
+function afterGC() {
   countGC ++;
 }
 
diff --git a/test/gc/test-http-client.js b/test/gc/test-http-client.js
index 6aedda7ede..7c3259d38b 100644
--- a/test/gc/test-http-client.js
+++ b/test/gc/test-http-client.js
@@ -1,3 +1,4 @@
+'use strict';
 // just a simple http server and client.
 
 function serverHandler(req, res) {
@@ -15,7 +16,7 @@ var http  = require('http'),
     assert = require('assert'),
     PORT = common.PORT;
 
-console.log('We should do '+ todo +' requests');
+console.log('We should do ' + todo + ' requests');
 
 var http = require('http');
 var server = http.createServer(serverHandler);
@@ -26,11 +27,11 @@ function getall() {
   if (count >= todo)
     return;
 
-  (function(){
+  (function() {
     function cb(res) {
       res.resume();
-      console.error('in cb')
-      done+=1;
+      console.error('in cb');
+      done += 1;
       res.on('end', gc);
     }
 
@@ -38,11 +39,11 @@ function getall() {
       hostname: 'localhost',
       pathname: '/',
       port: PORT
-    }, cb)
+    }, cb);
 
     count++;
     weak(req, afterGC);
-  })()
+  })();
 
   setImmediate(getall);
 }
@@ -50,7 +51,7 @@ function getall() {
 for (var i = 0; i < 10; i++)
   getall();
 
-function afterGC(){
+function afterGC() {
   countGC ++;
 }
 
diff --git a/test/gc/test-net-timeout.js b/test/gc/test-net-timeout.js
index 2ef03b2632..6c3b4f245b 100644
--- a/test/gc/test-net-timeout.js
+++ b/test/gc/test-net-timeout.js
@@ -1,3 +1,4 @@
+'use strict';
 // just like test/gc/http-client-timeout.js,
 // but using a net server/client instead
 
@@ -11,7 +12,7 @@ function serverHandler(sock) {
   sock.on('error', function(err) {
     assert.strictEqual(err.code, 'ECONNRESET');
   });
-  timer = setTimeout(function () {
+  timer = setTimeout(function() {
     sock.end('hello\n');
   }, 100);
 }
@@ -26,7 +27,7 @@ var net  = require('net'),
     assert = require('assert'),
     PORT = common.PORT;
 
-console.log('We should do '+ todo +' requests');
+console.log('We should do ' + todo + ' requests');
 
 var server = net.createServer(serverHandler);
 server.listen(PORT, getall);
@@ -35,7 +36,7 @@ function getall() {
   if (count >= todo)
     return;
 
-  (function(){
+  (function() {
     var req = net.connect(PORT, '127.0.0.1');
     req.resume();
     req.setTimeout(10, function() {
@@ -55,7 +56,7 @@ function getall() {
 for (var i = 0; i < 10; i++)
   getall();
 
-function afterGC(){
+function afterGC() {
   countGC ++;
 }
 
diff --git a/test/internet/test-dgram-broadcast-multi-process.js b/test/internet/test-dgram-broadcast-multi-process.js
index d60fb0bd34..4cf5d7226f 100644
--- a/test/internet/test-dgram-broadcast-multi-process.js
+++ b/test/internet/test-dgram-broadcast-multi-process.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common'),
     assert = require('assert'),
     dgram = require('dgram'),
@@ -144,7 +145,7 @@ if (process.argv[2] !== 'child') {
   // bind the address explicitly for sending
   // INADDR_BROADCAST to only one interface
   sendSocket.bind(common.PORT, bindAddress);
-  sendSocket.on('listening', function () {
+  sendSocket.on('listening', function() {
     sendSocket.setBroadcast(true);
   });
 
@@ -162,9 +163,7 @@ if (process.argv[2] !== 'child') {
 
     sendSocket.send(buf, 0, buf.length,
                     common.PORT, LOCAL_BROADCAST_HOST, function(err) {
-
           if (err) throw err;
-
           console.error('[PARENT] sent %s to %s:%s',
                         util.inspect(buf.toString()),
                         LOCAL_BROADCAST_HOST, common.PORT);
diff --git a/test/internet/test-dgram-multicast-multi-process.js b/test/internet/test-dgram-multicast-multi-process.js
index 66c92b285c..05acb844e5 100644
--- a/test/internet/test-dgram-multicast-multi-process.js
+++ b/test/internet/test-dgram-multicast-multi-process.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common'),
     assert = require('assert'),
     dgram = require('dgram'),
@@ -129,7 +130,7 @@ if (process.argv[2] !== 'child') {
   sendSocket.bind();
 
   // The socket is actually created async now
-  sendSocket.on('listening', function () {
+  sendSocket.on('listening', function() {
     sendSocket.setTTL(1);
     sendSocket.setBroadcast(true);
     sendSocket.setMulticastTTL(1);
@@ -206,7 +207,7 @@ if (process.argv[2] === 'child') {
 
   listenSocket.bind(common.PORT);
 
-  listenSocket.on('listening', function () {
+  listenSocket.on('listening', function() {
     listenSocket.addMembership(LOCAL_BROADCAST_HOST);
   });
 }
diff --git a/test/internet/test-dns-txt-sigsegv.js b/test/internet/test-dns-txt-sigsegv.js
index 75d34c21c0..eba5c66c46 100644
--- a/test/internet/test-dns-txt-sigsegv.js
+++ b/test/internet/test-dns-txt-sigsegv.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var dns = require('dns');
diff --git a/test/internet/test-dns.js b/test/internet/test-dns.js
index b980b822c1..eb7bab8547 100644
--- a/test/internet/test-dns.js
+++ b/test/internet/test-dns.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert'),
     dns = require('dns'),
@@ -500,7 +501,8 @@ TEST(function test_lookup_null_all(done) {
 
 
 TEST(function test_lookup_all_ipv4(done) {
-  var req = dns.lookup('www.google.com', {all: true, family: 4}, function(err, ips) {
+  var req = dns.lookup('www.google.com', {all: true, family: 4},
+                       function(err, ips) {
     if (err) throw err;
     assert.ok(Array.isArray(ips));
     assert.ok(ips.length > 0);
@@ -518,7 +520,8 @@ TEST(function test_lookup_all_ipv4(done) {
 
 
 TEST(function test_lookup_all_ipv6(done) {
-  var req = dns.lookup('www.google.com', {all: true, family: 6}, function(err, ips) {
+  var req = dns.lookup('www.google.com', {all: true, family: 6},
+                       function(err, ips) {
     if (err) throw err;
     assert.ok(Array.isArray(ips));
     assert.ok(ips.length > 0);
diff --git a/test/internet/test-http-dns-fail.js b/test/internet/test-http-dns-fail.js
index 7d1cfbf630..151597de14 100644
--- a/test/internet/test-http-dns-fail.js
+++ b/test/internet/test-http-dns-fail.js
@@ -1,3 +1,4 @@
+'use strict';
 /*
  * Repeated requests for a domain that fails to resolve
  * should trigger the error event after each attempt.
diff --git a/test/internet/test-http-https-default-ports.js b/test/internet/test-http-https-default-ports.js
index 26732ee086..1133221e6b 100644
--- a/test/internet/test-http-https-default-ports.js
+++ b/test/internet/test-http-https-default-ports.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/internet/test-net-connect-timeout.js b/test/internet/test-net-connect-timeout.js
index a55cf5e4bb..d122229397 100644
--- a/test/internet/test-net-connect-timeout.js
+++ b/test/internet/test-net-connect-timeout.js
@@ -1,3 +1,4 @@
+'use strict';
 // This example attempts to time out before the connection is established
 // https://groups.google.com/forum/#!topic/nodejs/UE0ZbfLt6t8
 // https://groups.google.com/forum/#!topic/nodejs-dev/jR7-5UDqXkw
diff --git a/test/internet/test-net-connect-unref.js b/test/internet/test-net-connect-unref.js
index dc0462ffd0..a712490d31 100644
--- a/test/internet/test-net-connect-unref.js
+++ b/test/internet/test-net-connect-unref.js
@@ -1,9 +1,10 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var net = require('net');
 
 var client, killed = false, ended = false;
-var TIMEOUT = 10 * 1000
+var TIMEOUT = 10 * 1000;
 
 client = net.createConnection(53, '8.8.8.8', function() {
   client.unref();
diff --git a/test/internet/test-tls-connnect-melissadata.js b/test/internet/test-tls-connnect-melissadata.js
index 61239c89c8..96ff41af30 100644
--- a/test/internet/test-tls-connnect-melissadata.js
+++ b/test/internet/test-tls-connnect-melissadata.js
@@ -1,3 +1,4 @@
+'use strict';
 // Test for authorized access to the server which has a cross root
 // certification between Starfield Class 2 and ValiCert Class 2
 var tls = require('tls');
diff --git a/test/internet/test-tls-reuse-host-from-socket.js b/test/internet/test-tls-reuse-host-from-socket.js
index 2f6392ce83..f386490815 100644
--- a/test/internet/test-tls-reuse-host-from-socket.js
+++ b/test/internet/test-tls-reuse-host-from-socket.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/message/2100bytes.js b/test/message/2100bytes.js
index 59fe3c1523..b05f5e9e1d 100644
--- a/test/message/2100bytes.js
+++ b/test/message/2100bytes.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var util = require('util');
diff --git a/test/message/error_exit.js b/test/message/error_exit.js
index 51c2569749..7805fd2193 100644
--- a/test/message/error_exit.js
+++ b/test/message/error_exit.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/message/eval_messages.js b/test/message/eval_messages.js
index 157cf881f6..603acafe09 100644
--- a/test/message/eval_messages.js
+++ b/test/message/eval_messages.js
@@ -1,3 +1,4 @@
+'use strict';
 // USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 var common = require('../common');
diff --git a/test/message/hello_world.js b/test/message/hello_world.js
index 996e08d51a..1e6b030393 100644
--- a/test/message/hello_world.js
+++ b/test/message/hello_world.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/message/max_tick_depth.js b/test/message/max_tick_depth.js
index 1e43cae1c1..cacd795810 100644
--- a/test/message/max_tick_depth.js
+++ b/test/message/max_tick_depth.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 
 process.maxTickDepth = 10;
diff --git a/test/message/nexttick_throw.js b/test/message/nexttick_throw.js
index 21361edf33..3c0e2d8e37 100644
--- a/test/message/nexttick_throw.js
+++ b/test/message/nexttick_throw.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/message/stack_overflow.js b/test/message/stack_overflow.js
index f822afd22c..7d1033c3ab 100644
--- a/test/message/stack_overflow.js
+++ b/test/message/stack_overflow.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/message/stdin_messages.js b/test/message/stdin_messages.js
index 8c4e47d000..eefa9e756d 100644
--- a/test/message/stdin_messages.js
+++ b/test/message/stdin_messages.js
@@ -1,3 +1,4 @@
+'use strict';
 // USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 var common = require('../common');
diff --git a/test/message/throw_custom_error.js b/test/message/throw_custom_error.js
index 34a007920d..270b37d14d 100644
--- a/test/message/throw_custom_error.js
+++ b/test/message/throw_custom_error.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/message/throw_custom_error.out b/test/message/throw_custom_error.out
index f003972940..bfb928d48d 100644
--- a/test/message/throw_custom_error.out
+++ b/test/message/throw_custom_error.out
@@ -1,5 +1,5 @@
 before
-*test*message*throw_custom_error.js:7
+*test*message*throw_custom_error.js:8
 throw ({ name: 'MyCustomError', message: 'This is a custom message' });
 ^
 MyCustomError: This is a custom message
diff --git a/test/message/throw_in_line_with_tabs.js b/test/message/throw_in_line_with_tabs.js
index dc035c42ca..50c69ca681 100644
--- a/test/message/throw_in_line_with_tabs.js
+++ b/test/message/throw_in_line_with_tabs.js
@@ -1,9 +1,11 @@
+/* eslint-disable indent */
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
 console.error('before');
 
-(function () {
+(function() {
 	// these lines should contain tab!
 	throw ({ foo: 'bar' });
 })();
diff --git a/test/message/throw_in_line_with_tabs.out b/test/message/throw_in_line_with_tabs.out
index 11eadab34b..e83b057684 100644
--- a/test/message/throw_in_line_with_tabs.out
+++ b/test/message/throw_in_line_with_tabs.out
@@ -1,5 +1,5 @@
 before
-*test*message*throw_in_line_with_tabs.js:8
+*test*message*throw_in_line_with_tabs.js:10
 	throw ({ foo: 'bar' });
 	^
 [object Object]
diff --git a/test/message/throw_non_error.js b/test/message/throw_non_error.js
index 817b557906..33e0a051d6 100644
--- a/test/message/throw_non_error.js
+++ b/test/message/throw_non_error.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/message/throw_non_error.out b/test/message/throw_non_error.out
index 4b39de5acf..c859d5f16a 100644
--- a/test/message/throw_non_error.out
+++ b/test/message/throw_non_error.out
@@ -1,5 +1,5 @@
 before
-*test*message*throw_non_error.js:7
+*test*message*throw_non_error.js:8
 throw ({ foo: 'bar' });
 ^
 [object Object]
diff --git a/test/message/throw_null.js b/test/message/throw_null.js
index 27e86a8ff0..ab8fb565a6 100644
--- a/test/message/throw_null.js
+++ b/test/message/throw_null.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/message/throw_null.out b/test/message/throw_null.out
index be5cb3f7b8..eb3eeb1294 100644
--- a/test/message/throw_null.out
+++ b/test/message/throw_null.out
@@ -1,5 +1,5 @@
 
-*test*message*throw_null.js:4
+*test*message*throw_null.js:5
 throw null;
-^      
+^
 null
diff --git a/test/message/throw_undefined.js b/test/message/throw_undefined.js
index dcc54d74d2..f855cdd2f7 100644
--- a/test/message/throw_undefined.js
+++ b/test/message/throw_undefined.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/message/throw_undefined.out b/test/message/throw_undefined.out
index 1aa6e15b37..27aedd9ee4 100644
--- a/test/message/throw_undefined.out
+++ b/test/message/throw_undefined.out
@@ -1,5 +1,5 @@
 
-*test*message*throw_undefined.js:4
+*test*message*throw_undefined.js:5
 throw undefined;
       ^
 undefined
diff --git a/test/message/timeout_throw.js b/test/message/timeout_throw.js
index 4ccf0bdd27..aaf3fbc8d2 100644
--- a/test/message/timeout_throw.js
+++ b/test/message/timeout_throw.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/message/undefined_reference_in_new_context.js b/test/message/undefined_reference_in_new_context.js
index 01d9698f22..7256c0d8e3 100644
--- a/test/message/undefined_reference_in_new_context.js
+++ b/test/message/undefined_reference_in_new_context.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var vm = require('vm');
diff --git a/test/message/vm_display_runtime_error.js b/test/message/vm_display_runtime_error.js
index 22c10d6022..d01ab0b540 100644
--- a/test/message/vm_display_runtime_error.js
+++ b/test/message/vm_display_runtime_error.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var vm = require('vm');
diff --git a/test/message/vm_display_syntax_error.js b/test/message/vm_display_syntax_error.js
index b0172264e7..179263478b 100644
--- a/test/message/vm_display_syntax_error.js
+++ b/test/message/vm_display_syntax_error.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var vm = require('vm');
diff --git a/test/message/vm_dont_display_runtime_error.js b/test/message/vm_dont_display_runtime_error.js
index 7aa81844b8..6b4c824cbe 100644
--- a/test/message/vm_dont_display_runtime_error.js
+++ b/test/message/vm_dont_display_runtime_error.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var vm = require('vm');
@@ -5,17 +6,17 @@ var vm = require('vm');
 console.error('beginning');
 
 try {
-    vm.runInThisContext('throw new Error("boo!")', {
-        filename: 'test.vm',
-        displayErrors: false
-    });
+  vm.runInThisContext('throw new Error("boo!")', {
+    filename: 'test.vm',
+    displayErrors: false
+  });
 } catch (e) {}
 
 console.error('middle');
 
 vm.runInThisContext('throw new Error("boo!")', {
-    filename: 'test.vm',
-    displayErrors: false
+  filename: 'test.vm',
+  displayErrors: false
 });
 
 console.error('end');
diff --git a/test/message/vm_dont_display_syntax_error.js b/test/message/vm_dont_display_syntax_error.js
index 724bea2214..42b1ab14cb 100644
--- a/test/message/vm_dont_display_syntax_error.js
+++ b/test/message/vm_dont_display_syntax_error.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var vm = require('vm');
@@ -5,17 +6,17 @@ var vm = require('vm');
 console.error('beginning');
 
 try {
-    vm.runInThisContext('var 5;', {
-        filename: 'test.vm',
-        displayErrors: false
-    });
+  vm.runInThisContext('var 5;', {
+    filename: 'test.vm',
+    displayErrors: false
+  });
 } catch (e) {}
 
 console.error('middle');
 
 vm.runInThisContext('var 5;', {
-    filename: 'test.vm',
-    displayErrors: false
+  filename: 'test.vm',
+  displayErrors: false
 });
 
 console.error('end');
diff --git a/test/parallel/test-arm-math-exp-regress-1376.js b/test/parallel/test-arm-math-exp-regress-1376.js
index e81766a1d8..160b7b5dcc 100644
--- a/test/parallel/test-arm-math-exp-regress-1376.js
+++ b/test/parallel/test-arm-math-exp-regress-1376.js
@@ -1,3 +1,4 @@
+'use strict';
 // See https://github.com/nodejs/io.js/issues/1376
 // and https://code.google.com/p/v8/issues/detail?id=4019
 
diff --git a/test/parallel/test-assert.js b/test/parallel/test-assert.js
index 1e2e8e6d55..ce84eabc34 100644
--- a/test/parallel/test-assert.js
+++ b/test/parallel/test-assert.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var a = require('assert');
@@ -144,10 +145,14 @@ if (typeof Symbol === 'symbol') {
 }
 
 // primitive wrappers and object
-assert.doesNotThrow(makeBlock(a.deepEqual, new String('a'), ['a']), a.AssertionError);
-assert.doesNotThrow(makeBlock(a.deepEqual, new String('a'), {0: 'a'}), a.AssertionError);
-assert.doesNotThrow(makeBlock(a.deepEqual, new Number(1), {}), a.AssertionError);
-assert.doesNotThrow(makeBlock(a.deepEqual, new Boolean(true), {}), a.AssertionError);
+assert.doesNotThrow(makeBlock(a.deepEqual, new String('a'), ['a']),
+                    a.AssertionError);
+assert.doesNotThrow(makeBlock(a.deepEqual, new String('a'), {0: 'a'}),
+                    a.AssertionError);
+assert.doesNotThrow(makeBlock(a.deepEqual, new Number(1), {}),
+                    a.AssertionError);
+assert.doesNotThrow(makeBlock(a.deepEqual, new Boolean(true), {}),
+                    a.AssertionError);
 
 //deepStrictEqual
 assert.doesNotThrow(makeBlock(a.deepStrictEqual, new Date(2000, 3, 14),
@@ -313,9 +318,9 @@ try {
 assert.equal(true, threw,
              'a.doesNotThrow is not catching type matching errors');
 
-assert.throws(function() {assert.ifError(new Error('test error'))});
-assert.doesNotThrow(function() {assert.ifError(null)});
-assert.doesNotThrow(function() {assert.ifError()});
+assert.throws(function() {assert.ifError(new Error('test error'));});
+assert.doesNotThrow(function() {assert.ifError(null);});
+assert.doesNotThrow(function() {assert.ifError();});
 
 // make sure that validating using constructor really works
 threw = false;
@@ -373,7 +378,7 @@ function testAssertionMessage(actual, expected) {
   } catch (e) {
     assert.equal(e.toString(),
         ['AssertionError:', expected, '==', '\'\''].join(' '));
-    assert.ok(e.generatedMessage, "Message not marked as generated");
+    assert.ok(e.generatedMessage, 'Message not marked as generated');
   }
 }
 
@@ -393,7 +398,7 @@ testAssertionMessage([1, 2, 3], '[ 1, 2, 3 ]');
 testAssertionMessage(/a/, '/a/');
 testAssertionMessage(/abc/gim, '/abc/gim');
 testAssertionMessage(function f() {}, '[Function: f]');
-testAssertionMessage(function () {}, '[Function]');
+testAssertionMessage(function() {}, '[Function]');
 testAssertionMessage({}, '{}');
 testAssertionMessage(circular, '{ y: 1, x: [Circular] }');
 testAssertionMessage({a: undefined, b: null}, '{ a: undefined, b: null }');
@@ -402,7 +407,7 @@ testAssertionMessage({a: NaN, b: Infinity, c: -Infinity},
 
 // #2893
 try {
-  assert.throws(function () {
+  assert.throws(function() {
     assert.ifError(null);
   });
 } catch (e) {
@@ -415,14 +420,14 @@ assert.ok(threw);
 try {
   assert.equal(1, 2);
 } catch (e) {
-  assert.equal(e.toString().split('\n')[0], 'AssertionError: 1 == 2')
+  assert.equal(e.toString().split('\n')[0], 'AssertionError: 1 == 2');
   assert.ok(e.generatedMessage, 'Message not marked as generated');
 }
 
 try {
   assert.equal(1, 2, 'oh no');
 } catch (e) {
-  assert.equal(e.toString().split('\n')[0], 'AssertionError: oh no')
+  assert.equal(e.toString().split('\n')[0], 'AssertionError: oh no');
   assert.equal(e.generatedMessage, false,
               'Message incorrectly marked as generated');
 }
diff --git a/test/parallel/test-bad-unicode.js b/test/parallel/test-bad-unicode.js
index ba31ba3e23..6dcabc8fd4 100644
--- a/test/parallel/test-bad-unicode.js
+++ b/test/parallel/test-bad-unicode.js
@@ -1,3 +1,4 @@
+'use strict';
 var assert = require('assert'),
     exception = null;
 
diff --git a/test/parallel/test-beforeexit-event-exit.js b/test/parallel/test-beforeexit-event-exit.js
index 8d0d43d45b..43d213a8f9 100644
--- a/test/parallel/test-beforeexit-event-exit.js
+++ b/test/parallel/test-beforeexit-event-exit.js
@@ -1,3 +1,4 @@
+'use strict';
 var assert = require('assert');
 
 process.on('beforeExit', function() {
diff --git a/test/parallel/test-beforeexit-event.js b/test/parallel/test-beforeexit-event.js
index 8bfdbe108e..f3bd127b40 100644
--- a/test/parallel/test-beforeexit-event.js
+++ b/test/parallel/test-beforeexit-event.js
@@ -1,3 +1,4 @@
+'use strict';
 var assert = require('assert');
 var net = require('net');
 var util = require('util');
@@ -19,7 +20,7 @@ function tryImmediate() {
 
 function tryTimer() {
   console.log('set a timeout');
-  setTimeout(function () {
+  setTimeout(function() {
     console.log('timeout cb, do another once beforeExit');
     revivals++;
     process.once('beforeExit', tryListen);
diff --git a/test/parallel/test-buffer-ascii.js b/test/parallel/test-buffer-ascii.js
index e7625f3a0c..efc3a72c66 100644
--- a/test/parallel/test-buffer-ascii.js
+++ b/test/parallel/test-buffer-ascii.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-buffer-concat.js b/test/parallel/test-buffer-concat.js
index 54c4b13cb9..b023dba4cd 100644
--- a/test/parallel/test-buffer-concat.js
+++ b/test/parallel/test-buffer-concat.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
@@ -14,7 +15,7 @@ var flatLongLen = Buffer.concat(long, 40);
 assert(flatZero.length === 0);
 assert(flatOne.toString() === 'asdf');
 assert(flatOne === one[0]);
-assert(flatLong.toString() === (new Array(10+1).join('asdf')));
-assert(flatLongLen.toString() === (new Array(10+1).join('asdf')));
+assert(flatLong.toString() === (new Array(10 + 1).join('asdf')));
+assert(flatLongLen.toString() === (new Array(10 + 1).join('asdf')));
 
-console.log("ok");
+console.log('ok');
diff --git a/test/parallel/test-buffer-indexof.js b/test/parallel/test-buffer-indexof.js
index 32748dcaaa..7ffbae525f 100644
--- a/test/parallel/test-buffer-indexof.js
+++ b/test/parallel/test-buffer-indexof.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-buffer-inspect.js b/test/parallel/test-buffer-inspect.js
index f663d23edc..707f778255 100644
--- a/test/parallel/test-buffer-inspect.js
+++ b/test/parallel/test-buffer-inspect.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-buffer-iterator.js b/test/parallel/test-buffer-iterator.js
index ab02934bf9..05371d6d79 100644
--- a/test/parallel/test-buffer-iterator.js
+++ b/test/parallel/test-buffer-iterator.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-buffer-slice.js b/test/parallel/test-buffer-slice.js
index 3d8f9c62d2..53434eab8e 100644
--- a/test/parallel/test-buffer-slice.js
+++ b/test/parallel/test-buffer-slice.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
@@ -7,5 +8,5 @@ var buff = new Buffer(Buffer.poolSize + 1);
 var slicedBuffer = buff.slice();
 assert.equal(slicedBuffer.parent,
              buff,
-             "slicedBufffer should have its parent set to the original " +
-             " buffer");
+             'slicedBufffer should have its parent set to the original ' +
+             ' buffer');
diff --git a/test/parallel/test-buffer.js b/test/parallel/test-buffer.js
index abfbff4f80..53411933a0 100644
--- a/test/parallel/test-buffer.js
+++ b/test/parallel/test-buffer.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
@@ -127,8 +128,8 @@ assert.strictEqual(Math.floor(c.length / 2), copied);
 for (var i = 0; i < Math.floor(c.length / 2); i++) {
   assert.strictEqual(b[b.length - Math.floor(c.length / 2) + i], c[i]);
 }
-for (var i = Math.floor(c.length /2) + 1; i < c.length; i++) {
-  assert.strictEqual(c[c.length-1], c[i]);
+for (var i = Math.floor(c.length / 2) + 1; i < c.length; i++) {
+  assert.strictEqual(c[c.length - 1], c[i]);
 }
 
 // try to copy 513 bytes, and check we don't overrun c
@@ -843,7 +844,7 @@ Buffer(Buffer(0), 0, 0);
 
 
 // GH-5110
-(function () {
+(function() {
   var buffer = new Buffer('test'),
       string = JSON.stringify(buffer);
 
@@ -1068,7 +1069,7 @@ assert.equal(buf.readInt8(0), -1);
   // see https://github.com/joyent/node/issues/5881
   SlowBuffer(0).slice(0, 1);
   // make sure a zero length slice doesn't set the .parent attribute
-  assert.equal(Buffer(5).slice(0,0).parent, undefined);
+  assert.equal(Buffer(5).slice(0, 0).parent, undefined);
   // and make sure a proper slice does have a parent
   assert.ok(typeof Buffer(5).slice(0, 5).parent === 'object');
 })();
@@ -1087,7 +1088,7 @@ assert.throws(function() {
 (function() {
   var a = [0];
   for (var i = 0; i < 7; ++i) a = a.concat(a);
-  a = a.map(function(_, i) { return i });
+  a = a.map(function(_, i) { return i; });
   var b = Buffer(a);
   var c = Buffer(b);
   assert.equal(b.length, a.length);
@@ -1100,11 +1101,11 @@ assert.throws(function() {
 })();
 
 
-assert.throws(function () {
+assert.throws(function() {
   new Buffer(smalloc.kMaxLength + 1);
 }, RangeError);
 
-assert.throws(function () {
+assert.throws(function() {
   new SlowBuffer(smalloc.kMaxLength + 1);
 }, RangeError);
 
diff --git a/test/parallel/test-c-ares.js b/test/parallel/test-c-ares.js
index 2c74a47044..739c3256fb 100644
--- a/test/parallel/test-c-ares.js
+++ b/test/parallel/test-c-ares.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-child-process-buffering.js b/test/parallel/test-child-process-buffering.js
index 997e64248a..a37e1dbbbd 100644
--- a/test/parallel/test-child-process-buffering.js
+++ b/test/parallel/test-child-process-buffering.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
@@ -23,7 +24,7 @@ function pwd(callback) {
     childExited = true;
   });
 
-  child.on('close', function () {
+  child.on('close', function() {
     callback(output);
     pwd_called = true;
     childClosed = true;
diff --git a/test/parallel/test-child-process-cwd.js b/test/parallel/test-child-process-cwd.js
index 2ff459e9a3..5d3f0d9496 100644
--- a/test/parallel/test-child-process-cwd.js
+++ b/test/parallel/test-child-process-cwd.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var spawn = require('child_process').spawn;
@@ -26,7 +27,7 @@ function testCwd(options, forCode, forData) {
     assert.strictEqual(forCode, code);
   });
 
-  child.on('close', function () {
+  child.on('close', function() {
     forData && assert.strictEqual(forData, data.replace(/[\s\r\n]+$/, ''));
     returns--;
   });
diff --git a/test/parallel/test-child-process-default-options.js b/test/parallel/test-child-process-default-options.js
index ee0cb59842..93165ded6d 100644
--- a/test/parallel/test-child-process-default-options.js
+++ b/test/parallel/test-child-process-default-options.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-child-process-detached.js b/test/parallel/test-child-process-detached.js
index 1cc2a5022e..25b811a8ca 100644
--- a/test/parallel/test-child-process-detached.js
+++ b/test/parallel/test-child-process-detached.js
@@ -1,23 +1,25 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var path = require('path');
 
 var spawn = require('child_process').spawn;
-var childPath = path.join(__dirname, '..', 'fixtures', 'parent-process-nonpersistent.js');
+var childPath = path.join(__dirname, '..', 'fixtures',
+                          'parent-process-nonpersistent.js');
 var persistentPid = -1;
 
 var child = spawn(process.execPath, [ childPath ]);
 
-child.stdout.on('data', function (data) {
+child.stdout.on('data', function(data) {
   persistentPid = parseInt(data, 10);
 });
 
-process.on('exit', function () {
+process.on('exit', function() {
   assert(persistentPid !== -1);
-  assert.throws(function () {
+  assert.throws(function() {
     process.kill(child.pid);
   });
-  assert.doesNotThrow(function () {
+  assert.doesNotThrow(function() {
     process.kill(persistentPid);
   });
 });
diff --git a/test/parallel/test-child-process-disconnect.js b/test/parallel/test-child-process-disconnect.js
index 95b26a7c4a..fd5153f396 100644
--- a/test/parallel/test-child-process-disconnect.js
+++ b/test/parallel/test-child-process-disconnect.js
@@ -1,3 +1,4 @@
+'use strict';
 var assert = require('assert');
 var common = require('../common');
 var fork = require('child_process').fork;
diff --git a/test/parallel/test-child-process-double-pipe.js b/test/parallel/test-child-process-double-pipe.js
index cf40dedd8a..17b0579131 100644
--- a/test/parallel/test-child-process-double-pipe.js
+++ b/test/parallel/test-child-process-double-pipe.js
@@ -1,3 +1,4 @@
+'use strict';
 var is_windows = process.platform === 'win32';
 
 var common = require('../common');
@@ -95,5 +96,5 @@ sed.stdout.on('data', function(data) {
 });
 
 sed.stdout.on('end', function(code) {
-  assert.equal(result, 'hellO' + os.EOL + 'nOde' + os.EOL  +'wOrld' + os.EOL);
+  assert.equal(result, 'hellO' + os.EOL + 'nOde' + os.EOL + 'wOrld' + os.EOL);
 });
diff --git a/test/parallel/test-child-process-env.js b/test/parallel/test-child-process-env.js
index a6a164a66c..6f2051f128 100644
--- a/test/parallel/test-child-process-env.js
+++ b/test/parallel/test-child-process-env.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-child-process-exec-buffer.js b/test/parallel/test-child-process-exec-buffer.js
index b680e3b3c1..0ab05080a2 100644
--- a/test/parallel/test-child-process-exec-buffer.js
+++ b/test/parallel/test-child-process-exec-buffer.js
@@ -1,3 +1,4 @@
+'use strict';
 require('../common');
 var assert = require('assert');
 var exec = require('child_process').exec;
@@ -8,7 +9,7 @@ var success_count = 0;
 var str = 'hello';
 
 // default encoding
-var child = exec("echo " + str, function(err, stdout, stderr) {
+var child = exec('echo ' + str, function(err, stdout, stderr) {
   assert.ok('string', typeof(stdout), 'Expected stdout to be a string');
   assert.ok('string', typeof(stderr), 'Expected stderr to be a string');
   assert.equal(str + os.EOL, stdout);
@@ -17,7 +18,7 @@ var child = exec("echo " + str, function(err, stdout, stderr) {
 });
 
 // no encoding (Buffers expected)
-var child = exec("echo " + str, {
+var child = exec('echo ' + str, {
   encoding: null
 }, function(err, stdout, stderr) {
   assert.ok(stdout instanceof Buffer, 'Expected stdout to be a Buffer');
diff --git a/test/parallel/test-child-process-exec-cwd.js b/test/parallel/test-child-process-exec-cwd.js
index c91a35de0b..9e7039990e 100644
--- a/test/parallel/test-child-process-exec-cwd.js
+++ b/test/parallel/test-child-process-exec-cwd.js
@@ -1,3 +1,4 @@
+'use strict';
 require('../common');
 var assert = require('assert');
 var exec = require('child_process').exec;
diff --git a/test/parallel/test-child-process-exec-env.js b/test/parallel/test-child-process-exec-env.js
index 6c8410b9a6..eb554b459c 100644
--- a/test/parallel/test-child-process-exec-env.js
+++ b/test/parallel/test-child-process-exec-env.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var exec = require('child_process').exec;
diff --git a/test/parallel/test-child-process-exec-error.js b/test/parallel/test-child-process-exec-error.js
index 7605af9854..b141fc3f2c 100644
--- a/test/parallel/test-child-process-exec-error.js
+++ b/test/parallel/test-child-process-exec-error.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var child_process = require('child_process');
diff --git a/test/parallel/test-child-process-exit-code.js b/test/parallel/test-child-process-exit-code.js
index 61f298633f..feb2fe2175 100644
--- a/test/parallel/test-child-process-exit-code.js
+++ b/test/parallel/test-child-process-exit-code.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var spawn = require('child_process').spawn;
diff --git a/test/parallel/test-child-process-fork-and-spawn.js b/test/parallel/test-child-process-fork-and-spawn.js
index 68e8af0fc3..d5255bf83c 100644
--- a/test/parallel/test-child-process-fork-and-spawn.js
+++ b/test/parallel/test-child-process-fork-and-spawn.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var spawn = require('child_process').spawn;
diff --git a/test/parallel/test-child-process-fork-close.js b/test/parallel/test-child-process-fork-close.js
index eddfec5d52..12b64cc4ff 100644
--- a/test/parallel/test-child-process-fork-close.js
+++ b/test/parallel/test-child-process-fork-close.js
@@ -1,3 +1,4 @@
+'use strict';
 var assert = require('assert'),
     common = require('../common'),
     fork = require('child_process').fork,
diff --git a/test/parallel/test-child-process-fork-dgram.js b/test/parallel/test-child-process-fork-dgram.js
index bd21f3f748..8858966fde 100644
--- a/test/parallel/test-child-process-fork-dgram.js
+++ b/test/parallel/test-child-process-fork-dgram.js
@@ -1,3 +1,4 @@
+'use strict';
 /*
  * The purpose of this test is to make sure that when forking a process,
  * sending a fd representing a UDP socket to the child and sending messages
@@ -30,7 +31,7 @@ if (process.argv[2] === 'child') {
     if (msg === 'server') {
       server = clusterServer;
 
-      server.on('message', function () {
+      server.on('message', function() {
         process.send('gotMessage');
       });
 
@@ -50,14 +51,14 @@ if (process.argv[2] === 'child') {
   var childGotMessage = false;
   var parentGotMessage = false;
 
-  server.on('message', function (msg, rinfo) {
+  server.on('message', function(msg, rinfo) {
     parentGotMessage = true;
   });
 
-  server.on('listening', function () {
+  server.on('listening', function() {
     child.send('server', server);
 
-    child.once('message', function (msg) {
+    child.once('message', function(msg) {
       if (msg === 'gotMessage') {
         childGotMessage = true;
       }
@@ -66,8 +67,8 @@ if (process.argv[2] === 'child') {
     sendMessages();
   });
 
-  var sendMessages = function () {
-    var timer = setInterval(function () {
+  var sendMessages = function() {
+    var timer = setInterval(function() {
       client.send(msg, 0, msg.length, common.PORT, '127.0.0.1', function(err) {
           if (err) throw err;
         }
@@ -85,7 +86,7 @@ if (process.argv[2] === 'child') {
     }, 1);
   };
 
-  var shutdown = function () {
+  var shutdown = function() {
     child.send('stop');
 
     server.close();
@@ -94,7 +95,7 @@ if (process.argv[2] === 'child') {
 
   server.bind(common.PORT, '127.0.0.1');
 
-  process.once('exit', function () {
+  process.once('exit', function() {
     assert(parentGotMessage);
     assert(childGotMessage);
   });
diff --git a/test/parallel/test-child-process-fork-exec-argv.js b/test/parallel/test-child-process-fork-exec-argv.js
index 34292c5511..94703a736a 100644
--- a/test/parallel/test-child-process-fork-exec-argv.js
+++ b/test/parallel/test-child-process-fork-exec-argv.js
@@ -1,3 +1,4 @@
+'use strict';
 var assert = require('assert');
 var child_process = require('child_process');
 var spawn = child_process.spawn;
@@ -16,11 +17,11 @@ if (process.argv[2] === 'fork') {
   var child = spawn(process.execPath, execArgv.concat(args));
   var out = '';
 
-  child.stdout.on('data', function (chunk) {
+  child.stdout.on('data', function(chunk) {
     out += chunk;
   });
 
-  child.on('exit', function () {
+  child.on('exit', function() {
     assert.deepEqual(JSON.parse(out), execArgv);
   });
 }
diff --git a/test/parallel/test-child-process-fork-exec-path.js b/test/parallel/test-child-process-fork-exec-path.js
index 72bb693168..cffb5ca05a 100644
--- a/test/parallel/test-child-process-fork-exec-path.js
+++ b/test/parallel/test-child-process-fork-exec-path.js
@@ -1,3 +1,4 @@
+'use strict';
 var assert = require('assert');
 var cp = require('child_process');
 var fs = require('fs');
diff --git a/test/parallel/test-child-process-fork-net.js b/test/parallel/test-child-process-fork-net.js
index a16fb85041..09ec8e24b9 100644
--- a/test/parallel/test-child-process-fork-net.js
+++ b/test/parallel/test-child-process-fork-net.js
@@ -1,3 +1,4 @@
+'use strict';
 var assert = require('assert');
 var common = require('../common');
 var fork = require('child_process').fork;
diff --git a/test/parallel/test-child-process-fork-net2.js b/test/parallel/test-child-process-fork-net2.js
index 150e9cfc45..95ec26a88d 100644
--- a/test/parallel/test-child-process-fork-net2.js
+++ b/test/parallel/test-child-process-fork-net2.js
@@ -1,3 +1,4 @@
+'use strict';
 var assert = require('assert');
 var common = require('../common');
 var fork = require('child_process').fork;
diff --git a/test/parallel/test-child-process-fork-ref.js b/test/parallel/test-child-process-fork-ref.js
index aa38ad7a21..b4066641ba 100644
--- a/test/parallel/test-child-process-fork-ref.js
+++ b/test/parallel/test-child-process-fork-ref.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var fork = require('child_process').fork;
@@ -10,7 +11,7 @@ if (process.argv[2] === 'child') {
     process.send('2');
   }, 200);
 
-  process.on('disconnect', function () {
+  process.on('disconnect', function() {
     process.stdout.write('3');
   });
 
@@ -19,17 +20,17 @@ if (process.argv[2] === 'child') {
 
   var ipc = [], stdout = '';
 
-  child.on('message', function (msg) {
+  child.on('message', function(msg) {
     ipc.push(msg);
 
     if (msg === '2') child.disconnect();
   });
 
-  child.stdout.on('data', function (chunk) {
+  child.stdout.on('data', function(chunk) {
     stdout += chunk;
   });
 
-  child.once('exit', function () {
+  child.once('exit', function() {
     assert.deepEqual(ipc, ['1', '2']);
     assert.equal(stdout, '3');
   });
diff --git a/test/parallel/test-child-process-fork-ref2.js b/test/parallel/test-child-process-fork-ref2.js
index 3ccdfc1887..8bc7e4c355 100644
--- a/test/parallel/test-child-process-fork-ref2.js
+++ b/test/parallel/test-child-process-fork-ref2.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var fork = require('child_process').fork;
@@ -8,17 +9,17 @@ if (process.argv[2] === 'child') {
 
   setTimeout(function() {
     console.log('child -> will this keep it alive?');
-    process.on('message', function () { });
+    process.on('message', function() { });
   }, 400);
 
 } else {
   var child = fork(__filename, ['child']);
 
-  child.on('disconnect', function () {
+  child.on('disconnect', function() {
     console.log('parent -> disconnect');
   });
 
-  child.once('exit', function () {
+  child.once('exit', function() {
     console.log('parent -> exit');
   });
 }
diff --git a/test/parallel/test-child-process-fork.js b/test/parallel/test-child-process-fork.js
index 2ec9f402dd..c35510e60c 100644
--- a/test/parallel/test-child-process-fork.js
+++ b/test/parallel/test-child-process-fork.js
@@ -1,3 +1,4 @@
+'use strict';
 var assert = require('assert');
 var common = require('../common');
 var fork = require('child_process').fork;
diff --git a/test/parallel/test-child-process-fork3.js b/test/parallel/test-child-process-fork3.js
index 8527257bc5..fe0e68b6a6 100644
--- a/test/parallel/test-child-process-fork3.js
+++ b/test/parallel/test-child-process-fork3.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var child_process = require('child_process');
 
diff --git a/test/parallel/test-child-process-internal.js b/test/parallel/test-child-process-internal.js
index a1bb52f4b7..c39dc93293 100644
--- a/test/parallel/test-child-process-internal.js
+++ b/test/parallel/test-child-process-internal.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-child-process-ipc.js b/test/parallel/test-child-process-ipc.js
index 712b1ee0a5..7d0447569f 100644
--- a/test/parallel/test-child-process-ipc.js
+++ b/test/parallel/test-child-process-ipc.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-child-process-kill.js b/test/parallel/test-child-process-kill.js
index 7e46aada8b..948348add4 100644
--- a/test/parallel/test-child-process-kill.js
+++ b/test/parallel/test-child-process-kill.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-child-process-recv-handle.js b/test/parallel/test-child-process-recv-handle.js
index 7f2f04f831..b992445f18 100644
--- a/test/parallel/test-child-process-recv-handle.js
+++ b/test/parallel/test-child-process-recv-handle.js
@@ -1,3 +1,4 @@
+'use strict';
 // Test that a Linux specific quirk in the handle passing protocol is handled
 // correctly. See https://github.com/joyent/node/issues/5330 for details.
 
diff --git a/test/parallel/test-child-process-send-utf8.js b/test/parallel/test-child-process-send-utf8.js
index 825913dc2a..7ba76e9bd1 100644
--- a/test/parallel/test-child-process-send-utf8.js
+++ b/test/parallel/test-child-process-send-utf8.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var fork = require('child_process').fork;
diff --git a/test/parallel/test-child-process-set-blocking.js b/test/parallel/test-child-process-set-blocking.js
index af831b720b..3f09388265 100644
--- a/test/parallel/test-child-process-set-blocking.js
+++ b/test/parallel/test-child-process-set-blocking.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var ch = require('child_process');
diff --git a/test/parallel/test-child-process-silent.js b/test/parallel/test-child-process-silent.js
index e1e03d0973..3714d3758d 100644
--- a/test/parallel/test-child-process-silent.js
+++ b/test/parallel/test-child-process-silent.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var childProcess = require('child_process');
diff --git a/test/parallel/test-child-process-spawn-error.js b/test/parallel/test-child-process-spawn-error.js
index fe279dc6e5..1398dac165 100644
--- a/test/parallel/test-child-process-spawn-error.js
+++ b/test/parallel/test-child-process-spawn-error.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var fs = require('fs');
 var spawn = require('child_process').spawn;
@@ -10,7 +11,7 @@ var spawnargs = ['bar'];
 assert.equal(common.fileExists(enoentPath), false);
 
 var enoentChild = spawn(enoentPath, spawnargs);
-enoentChild.on('error', function (err) {
+enoentChild.on('error', function(err) {
   assert.equal(err.code, 'ENOENT');
   assert.equal(err.errno, 'ENOENT');
   assert.equal(err.syscall, 'spawn ' + enoentPath);
diff --git a/test/parallel/test-child-process-spawn-typeerror.js b/test/parallel/test-child-process-spawn-typeerror.js
index b95b208eb0..35c190353b 100644
--- a/test/parallel/test-child-process-spawn-typeerror.js
+++ b/test/parallel/test-child-process-spawn-typeerror.js
@@ -1,3 +1,4 @@
+'use strict';
 var assert = require('assert');
 var child_process = require('child_process');
 var spawn = child_process.spawn;
diff --git a/test/parallel/test-child-process-spawnsync-env.js b/test/parallel/test-child-process-spawnsync-env.js
index 0ebc66a745..bc7c5aa3dd 100644
--- a/test/parallel/test-child-process-spawnsync-env.js
+++ b/test/parallel/test-child-process-spawnsync-env.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var cp = require('child_process');
diff --git a/test/parallel/test-child-process-spawnsync-input.js b/test/parallel/test-child-process-spawnsync-input.js
index e85e9da1fb..4118b74dc3 100644
--- a/test/parallel/test-child-process-spawnsync-input.js
+++ b/test/parallel/test-child-process-spawnsync-input.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var os = require('os');
diff --git a/test/parallel/test-child-process-spawnsync-timeout.js b/test/parallel/test-child-process-spawnsync-timeout.js
index f5b5987e4d..34c69a1fc5 100644
--- a/test/parallel/test-child-process-spawnsync-timeout.js
+++ b/test/parallel/test-child-process-spawnsync-timeout.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
@@ -15,7 +16,8 @@ switch (process.argv[2]) {
     break;
   default:
     var start = Date.now();
-    var ret = spawnSync(process.execPath, [__filename, 'child'], {timeout: TIMER});
+    var ret = spawnSync(process.execPath, [__filename, 'child'],
+                        {timeout: TIMER});
     assert.strictEqual(ret.error.errno, 'ETIMEDOUT');
     console.log(ret);
     var end = Date.now() - start;
diff --git a/test/parallel/test-child-process-spawnsync.js b/test/parallel/test-child-process-spawnsync.js
index 67b07ed481..b6f4d31b5c 100644
--- a/test/parallel/test-child-process-spawnsync.js
+++ b/test/parallel/test-child-process-spawnsync.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
@@ -20,7 +21,8 @@ var ret = spawnSync('sleep', ['1']);
 var stop = process.hrtime(start);
 assert.strictEqual(ret.status, 0, 'exit status should be zero');
 console.log('sleep exited', stop);
-assert.strictEqual(stop[0], 1, 'sleep should not take longer or less than 1 second');
+assert.strictEqual(stop[0], 1,
+                   'sleep should not take longer or less than 1 second');
 
 // Error test when command does not exist
 var ret_err = spawnSync('command_does_not_exist', ['bar']).error;
diff --git a/test/parallel/test-child-process-stdin-ipc.js b/test/parallel/test-child-process-stdin-ipc.js
index 2758087dea..d2347849dd 100644
--- a/test/parallel/test-child-process-stdin-ipc.js
+++ b/test/parallel/test-child-process-stdin-ipc.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-child-process-stdin.js b/test/parallel/test-child-process-stdin.js
index f2a5e1836a..ba3ef0e0c1 100644
--- a/test/parallel/test-child-process-stdin.js
+++ b/test/parallel/test-child-process-stdin.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
@@ -48,7 +49,7 @@ cat.on('exit', function(status) {
   exitStatus = status;
 });
 
-cat.on('close', function () {
+cat.on('close', function() {
   closed = true;
   if (is_windows) {
     assert.equal('hello world\r\n', response);
diff --git a/test/parallel/test-child-process-stdio-big-write-end.js b/test/parallel/test-child-process-stdio-big-write-end.js
index 631cecc33d..5ae85acc54 100644
--- a/test/parallel/test-child-process-stdio-big-write-end.js
+++ b/test/parallel/test-child-process-stdio-big-write-end.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var BUFSIZE = 1024;
diff --git a/test/parallel/test-child-process-stdio-inherit.js b/test/parallel/test-child-process-stdio-inherit.js
index 15a5040992..8cf08a7bd5 100644
--- a/test/parallel/test-child-process-stdio-inherit.js
+++ b/test/parallel/test-child-process-stdio-inherit.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var spawn = require('child_process').spawn;
diff --git a/test/parallel/test-child-process-stdio.js b/test/parallel/test-child-process-stdio.js
index 7292007f1a..1ff6e4d914 100644
--- a/test/parallel/test-child-process-stdio.js
+++ b/test/parallel/test-child-process-stdio.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var spawn = require('child_process').spawn;
diff --git a/test/parallel/test-child-process-stdout-flush-exit.js b/test/parallel/test-child-process-stdout-flush-exit.js
index eba8927204..0d4e3538ce 100644
--- a/test/parallel/test-child-process-stdout-flush-exit.js
+++ b/test/parallel/test-child-process-stdout-flush-exit.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var path = require('path');
@@ -21,14 +22,14 @@ if (process.argv[2] === 'child') {
   var gotBye = false;
 
   child.stderr.setEncoding('utf8');
-  child.stderr.on('data', function (data) {
+  child.stderr.on('data', function(data) {
     console.log('parent stderr: ' + data);
     assert.ok(false);
   });
 
   // check if we receive both 'hello' at start and 'goodbye' at end
   child.stdout.setEncoding('utf8');
-  child.stdout.on('data', function (data) {
+  child.stdout.on('data', function(data) {
     if (data.slice(0, 6) == 'hello\n') {
       gotHello = true;
     } else if (data.slice(data.length - 8) == 'goodbye\n') {
@@ -38,7 +39,7 @@ if (process.argv[2] === 'child') {
     }
   });
 
-  child.on('close', function (data) {
+  child.on('close', function(data) {
     assert(gotHello);
     assert(gotBye);
   });
diff --git a/test/parallel/test-child-process-stdout-flush.js b/test/parallel/test-child-process-stdout-flush.js
index 58d6a8f46a..8300f4bbc7 100644
--- a/test/parallel/test-child-process-stdout-flush.js
+++ b/test/parallel/test-child-process-stdout-flush.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var path = require('path');
diff --git a/test/parallel/test-cli-eval.js b/test/parallel/test-cli-eval.js
index fd9cd410d5..10a77c4a67 100644
--- a/test/parallel/test-cli-eval.js
+++ b/test/parallel/test-cli-eval.js
@@ -1,3 +1,4 @@
+'use strict';
 if (module.parent) {
   // signal we've been loaded as a module
   console.log('Loaded as a module, exiting with status code 42.');
diff --git a/test/parallel/test-cluster-basic.js b/test/parallel/test-cluster-basic.js
index 75ed9d3a15..60bd27b24e 100644
--- a/test/parallel/test-cluster-basic.js
+++ b/test/parallel/test-cluster-basic.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var cluster = require('cluster');
diff --git a/test/parallel/test-cluster-bind-privileged-port.js b/test/parallel/test-cluster-bind-privileged-port.js
index 3a75250c53..b51367aa42 100644
--- a/test/parallel/test-cluster-bind-privileged-port.js
+++ b/test/parallel/test-cluster-bind-privileged-port.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var cluster = require('cluster');
diff --git a/test/parallel/test-cluster-bind-twice.js b/test/parallel/test-cluster-bind-twice.js
index db1ea8874f..ec6faa83c1 100644
--- a/test/parallel/test-cluster-bind-twice.js
+++ b/test/parallel/test-cluster-bind-twice.js
@@ -1,3 +1,4 @@
+'use strict';
 // This test starts two clustered HTTP servers on the same port. It expects the
 // first cluster to succeed and the second cluster to fail with EADDRINUSE.
 //
diff --git a/test/parallel/test-cluster-dgram-1.js b/test/parallel/test-cluster-dgram-1.js
index dada58017f..bccc39637b 100644
--- a/test/parallel/test-cluster-dgram-1.js
+++ b/test/parallel/test-cluster-dgram-1.js
@@ -1,3 +1,4 @@
+'use strict';
 var NUM_WORKERS = 4;
 var PACKETS_PER_WORKER = 10;
 
@@ -8,7 +9,7 @@ var dgram = require('dgram');
 
 
 if (process.platform === 'win32') {
-  console.warn("dgram clustering is currently not supported on windows.");
+  console.warn('dgram clustering is currently not supported on windows.');
   process.exit(0);
 }
 
diff --git a/test/parallel/test-cluster-dgram-2.js b/test/parallel/test-cluster-dgram-2.js
index 68de38e7c3..db4f986f2d 100644
--- a/test/parallel/test-cluster-dgram-2.js
+++ b/test/parallel/test-cluster-dgram-2.js
@@ -1,3 +1,4 @@
+'use strict';
 var NUM_WORKERS = 4;
 var PACKETS_PER_WORKER = 10;
 
@@ -8,7 +9,7 @@ var dgram = require('dgram');
 
 
 if (process.platform === 'win32') {
-  console.warn("dgram clustering is currently not supported on windows.");
+  console.warn('dgram clustering is currently not supported on windows.');
   process.exit(0);
 }
 
@@ -61,5 +62,6 @@ function worker() {
   for (var i = 0; i < PACKETS_PER_WORKER; i++)
     socket.send(buf, 0, buf.length, common.PORT, '127.0.0.1');
 
-  console.log('worker %d sent %d packets', cluster.worker.id, PACKETS_PER_WORKER);
+  console.log('worker %d sent %d packets', cluster.worker.id,
+              PACKETS_PER_WORKER);
 }
diff --git a/test/parallel/test-cluster-disconnect-before-exit.js b/test/parallel/test-cluster-disconnect-before-exit.js
index d249296bab..8f63bcd113 100644
--- a/test/parallel/test-cluster-disconnect-before-exit.js
+++ b/test/parallel/test-cluster-disconnect-before-exit.js
@@ -1,3 +1,4 @@
+'use strict';
 var cluster = require('cluster');
 
 if (cluster.isMaster) {
diff --git a/test/parallel/test-cluster-disconnect-idle-worker.js b/test/parallel/test-cluster-disconnect-idle-worker.js
index 28cdd2de4e..e18c050044 100644
--- a/test/parallel/test-cluster-disconnect-idle-worker.js
+++ b/test/parallel/test-cluster-disconnect-idle-worker.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var cluster = require('cluster');
diff --git a/test/parallel/test-cluster-disconnect-unshared-tcp.js b/test/parallel/test-cluster-disconnect-unshared-tcp.js
index 6fccc58c09..a927b5da9f 100644
--- a/test/parallel/test-cluster-disconnect-unshared-tcp.js
+++ b/test/parallel/test-cluster-disconnect-unshared-tcp.js
@@ -1,3 +1,4 @@
+'use strict';
 process.env.NODE_CLUSTER_SCHED_POLICY = 'none';
 
 var cluster = require('cluster');
@@ -16,7 +17,7 @@ if (cluster.isMaster) {
   }
 } else {
   if (process.env.BOUND === 'y') {
-    var source = net.createServer()
+    var source = net.createServer();
 
     source.listen(0);
   }
diff --git a/test/parallel/test-cluster-disconnect-unshared-udp.js b/test/parallel/test-cluster-disconnect-unshared-udp.js
index a40c386918..f90152cf68 100644
--- a/test/parallel/test-cluster-disconnect-unshared-udp.js
+++ b/test/parallel/test-cluster-disconnect-unshared-udp.js
@@ -1,3 +1,4 @@
+'use strict';
 if (process.platform === 'win32') {
   console.log('skipping test on windows, where clustered dgram is ENOTSUP');
   process.exit(0);
diff --git a/test/parallel/test-cluster-disconnect-with-no-workers.js b/test/parallel/test-cluster-disconnect-with-no-workers.js
index e07f5af99d..1c99461bfa 100644
--- a/test/parallel/test-cluster-disconnect-with-no-workers.js
+++ b/test/parallel/test-cluster-disconnect-with-no-workers.js
@@ -1,3 +1,4 @@
+'use strict';
 var assert = require('assert');
 var cluster = require('cluster');
 
diff --git a/test/parallel/test-cluster-disconnect.js b/test/parallel/test-cluster-disconnect.js
index c557256dcb..0f19d534aa 100644
--- a/test/parallel/test-cluster-disconnect.js
+++ b/test/parallel/test-cluster-disconnect.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var cluster = require('cluster');
diff --git a/test/parallel/test-cluster-eaccess.js b/test/parallel/test-cluster-eaccess.js
index 1be28a3855..ad4de97e38 100644
--- a/test/parallel/test-cluster-eaccess.js
+++ b/test/parallel/test-cluster-eaccess.js
@@ -1,5 +1,7 @@
-// test that errors propagated from cluster children are properly received in their master
-// creates an EADDRINUSE condition by also forking a child process to listen on a socket
+'use strict';
+// test that errors propagated from cluster children are properly
+// received in their master creates an EADDRINUSE condition by also
+// forking a child process to listen on a socket
 
 var common = require('../common');
 var assert = require('assert');
@@ -27,7 +29,8 @@ if (cluster.isMaster) {
     assert.equal(gotError, 1);
   });
 } else {
-  var cp = fork(common.fixturesDir + '/listen-on-socket-and-exit.js', { stdio: 'inherit' });
+  var cp = fork(common.fixturesDir + '/listen-on-socket-and-exit.js',
+                { stdio: 'inherit' });
 
   // message from the child indicates it's ready and listening
   cp.on('message', function() {
diff --git a/test/parallel/test-cluster-eaddrinuse.js b/test/parallel/test-cluster-eaddrinuse.js
index c43259c563..509dbb664e 100644
--- a/test/parallel/test-cluster-eaddrinuse.js
+++ b/test/parallel/test-cluster-eaddrinuse.js
@@ -1,3 +1,4 @@
+'use strict';
 // Check that having a worker bind to a port that's already taken doesn't
 // leave the master process in a confused state. Releasing the port and
 // trying again should Just Work[TM].
diff --git a/test/parallel/test-cluster-fork-env.js b/test/parallel/test-cluster-fork-env.js
index ddcf7d236c..7749e42f60 100644
--- a/test/parallel/test-cluster-fork-env.js
+++ b/test/parallel/test-cluster-fork-env.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var cluster = require('cluster');
diff --git a/test/parallel/test-cluster-http-pipe.js b/test/parallel/test-cluster-http-pipe.js
index b970669961..42ed3bee1e 100644
--- a/test/parallel/test-cluster-http-pipe.js
+++ b/test/parallel/test-cluster-http-pipe.js
@@ -1,3 +1,4 @@
+'use strict';
 // It is not possible to send pipe handles over the IPC pipe on Windows.
 if (process.platform === 'win32') {
   process.exit(0);
diff --git a/test/parallel/test-cluster-master-error.js b/test/parallel/test-cluster-master-error.js
index e0e92e7cf9..e729963d7d 100644
--- a/test/parallel/test-cluster-master-error.js
+++ b/test/parallel/test-cluster-master-error.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var cluster = require('cluster');
diff --git a/test/parallel/test-cluster-master-kill.js b/test/parallel/test-cluster-master-kill.js
index a5c2285560..89694ffd11 100644
--- a/test/parallel/test-cluster-master-kill.js
+++ b/test/parallel/test-cluster-master-kill.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var cluster = require('cluster');
diff --git a/test/parallel/test-cluster-message.js b/test/parallel/test-cluster-message.js
index 29c9e31159..a72d1f079e 100644
--- a/test/parallel/test-cluster-message.js
+++ b/test/parallel/test-cluster-message.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var cluster = require('cluster');
diff --git a/test/parallel/test-cluster-net-listen.js b/test/parallel/test-cluster-net-listen.js
index 1d8e08c877..741cacc758 100644
--- a/test/parallel/test-cluster-net-listen.js
+++ b/test/parallel/test-cluster-net-listen.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var cluster = require('cluster');
diff --git a/test/parallel/test-cluster-net-send.js b/test/parallel/test-cluster-net-send.js
index 17d77171c5..6190fb517e 100644
--- a/test/parallel/test-cluster-net-send.js
+++ b/test/parallel/test-cluster-net-send.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var fork = require('child_process').fork;
diff --git a/test/parallel/test-cluster-rr-domain-listen.js b/test/parallel/test-cluster-rr-domain-listen.js
index fc26c93685..1328483abb 100644
--- a/test/parallel/test-cluster-rr-domain-listen.js
+++ b/test/parallel/test-cluster-rr-domain-listen.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var cluster = require('cluster');
 var domain = require('domain');
@@ -7,7 +8,7 @@ var domain = require('domain');
 
 if (cluster.isWorker) {
   var d = domain.create();
-  d.run(function () { });
+  d.run(function() { });
 
   var http = require('http');
   http.Server(function() { }).listen(common.PORT, '127.0.0.1');
diff --git a/test/parallel/test-cluster-send-deadlock.js b/test/parallel/test-cluster-send-deadlock.js
index 7fd465db5f..90b8c91695 100644
--- a/test/parallel/test-cluster-send-deadlock.js
+++ b/test/parallel/test-cluster-send-deadlock.js
@@ -1,3 +1,4 @@
+'use strict';
 // Testing mutual send of handles: from master to worker, and from worker to
 // master.
 
diff --git a/test/parallel/test-cluster-send-handle-twice.js b/test/parallel/test-cluster-send-handle-twice.js
index 2d2c2cc588..f1552d7926 100644
--- a/test/parallel/test-cluster-send-handle-twice.js
+++ b/test/parallel/test-cluster-send-handle-twice.js
@@ -1,3 +1,4 @@
+'use strict';
 // Testing to send an handle twice to the parent process.
 
 var common = require('../common');
diff --git a/test/parallel/test-cluster-setup-master-argv.js b/test/parallel/test-cluster-setup-master-argv.js
index a8274be2e9..b406c76cbb 100644
--- a/test/parallel/test-cluster-setup-master-argv.js
+++ b/test/parallel/test-cluster-setup-master-argv.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var cluster = require('cluster');
diff --git a/test/parallel/test-cluster-setup-master-cumulative.js b/test/parallel/test-cluster-setup-master-cumulative.js
index cf2d8e90da..0376546d28 100644
--- a/test/parallel/test-cluster-setup-master-cumulative.js
+++ b/test/parallel/test-cluster-setup-master-cumulative.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var cluster = require('cluster');
diff --git a/test/parallel/test-cluster-setup-master-emit.js b/test/parallel/test-cluster-setup-master-emit.js
index bef10d8cb8..8b463ec97b 100644
--- a/test/parallel/test-cluster-setup-master-emit.js
+++ b/test/parallel/test-cluster-setup-master-emit.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var cluster = require('cluster');
diff --git a/test/parallel/test-cluster-setup-master-multiple.js b/test/parallel/test-cluster-setup-master-multiple.js
index da0c03c732..8ee6d091cd 100644
--- a/test/parallel/test-cluster-setup-master-multiple.js
+++ b/test/parallel/test-cluster-setup-master-multiple.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var cluster = require('cluster');
diff --git a/test/parallel/test-cluster-setup-master.js b/test/parallel/test-cluster-setup-master.js
index 7cf9631146..c32b3ea6d3 100644
--- a/test/parallel/test-cluster-setup-master.js
+++ b/test/parallel/test-cluster-setup-master.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var cluster = require('cluster');
diff --git a/test/parallel/test-cluster-shared-handle-bind-error.js b/test/parallel/test-cluster-shared-handle-bind-error.js
index f327de994a..a93b07ba30 100644
--- a/test/parallel/test-cluster-shared-handle-bind-error.js
+++ b/test/parallel/test-cluster-shared-handle-bind-error.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var cluster = require('cluster');
diff --git a/test/parallel/test-cluster-shared-handle-bind-privileged-port.js b/test/parallel/test-cluster-shared-handle-bind-privileged-port.js
index 3bbe9fbf2f..4fc4b078ad 100644
--- a/test/parallel/test-cluster-shared-handle-bind-privileged-port.js
+++ b/test/parallel/test-cluster-shared-handle-bind-privileged-port.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var cluster = require('cluster');
diff --git a/test/parallel/test-cluster-uncaught-exception.js b/test/parallel/test-cluster-uncaught-exception.js
index 9f98d626c8..ec42773ef5 100644
--- a/test/parallel/test-cluster-uncaught-exception.js
+++ b/test/parallel/test-cluster-uncaught-exception.js
@@ -1,3 +1,4 @@
+'use strict';
 // Installing a custom uncaughtException handler should override the default
 // one that the cluster module installs.
 // https://github.com/joyent/node/issues/2556
diff --git a/test/parallel/test-cluster-worker-constructor.js b/test/parallel/test-cluster-worker-constructor.js
index 331ab77748..e29dc01561 100644
--- a/test/parallel/test-cluster-worker-constructor.js
+++ b/test/parallel/test-cluster-worker-constructor.js
@@ -1,3 +1,4 @@
+'use strict';
 // test-cluster-worker-constructor.js
 // validates correct behavior of the cluster.Worker constructor
 
diff --git a/test/parallel/test-cluster-worker-death.js b/test/parallel/test-cluster-worker-death.js
index d19704c58b..88a0f887cc 100644
--- a/test/parallel/test-cluster-worker-death.js
+++ b/test/parallel/test-cluster-worker-death.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var cluster = require('cluster');
diff --git a/test/parallel/test-cluster-worker-destroy.js b/test/parallel/test-cluster-worker-destroy.js
index 55ae0fc8c0..8e5ca63e13 100644
--- a/test/parallel/test-cluster-worker-destroy.js
+++ b/test/parallel/test-cluster-worker-destroy.js
@@ -1,3 +1,4 @@
+'use strict';
 /*
  * The goal of this test is to cover the Workers' implementation of
  * Worker.prototype.destroy. Worker.prototype.destroy is called within
diff --git a/test/parallel/test-cluster-worker-disconnect.js b/test/parallel/test-cluster-worker-disconnect.js
index e7a0960cb1..7f4038149c 100644
--- a/test/parallel/test-cluster-worker-disconnect.js
+++ b/test/parallel/test-cluster-worker-disconnect.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var cluster = require('cluster');
@@ -81,7 +82,8 @@ if (cluster.isWorker) {
 
     // events
     assert.ok(w.emitDisconnect, 'Disconnect event did not emit');
-    assert.ok(w.emitDisconnectInsideWorker, 'Disconnect event did not emit inside worker');
+    assert.ok(w.emitDisconnectInsideWorker,
+              'Disconnect event did not emit inside worker');
     assert.ok(c.emitDisconnect, 'Disconnect event did not emit');
     assert.ok(w.emitExit, 'Exit event did not emit');
     assert.ok(c.emitExit, 'Exit event did not emit');
diff --git a/test/parallel/test-cluster-worker-events.js b/test/parallel/test-cluster-worker-events.js
index fb3b8797e0..eb986556b6 100644
--- a/test/parallel/test-cluster-worker-events.js
+++ b/test/parallel/test-cluster-worker-events.js
@@ -1,3 +1,4 @@
+'use strict';
 var assert = require('assert');
 var cluster = require('cluster');
 
diff --git a/test/parallel/test-cluster-worker-exit.js b/test/parallel/test-cluster-worker-exit.js
index 1342a70d6f..982b099cd1 100644
--- a/test/parallel/test-cluster-worker-exit.js
+++ b/test/parallel/test-cluster-worker-exit.js
@@ -1,3 +1,4 @@
+'use strict';
 // test-cluster-worker-exit.js
 // verifies that, when a child process exits (by calling `process.exit(code)`)
 // - the parent receives the proper events in the proper order, no duplicates
@@ -100,31 +101,31 @@ if (cluster.isWorker) {
 
 // some helper functions ...
 
-  function checkResults(expected_results, results) {
-    for (var k in expected_results) {
-      var actual = results[k],
-          expected = expected_results[k];
+function checkResults(expected_results, results) {
+  for (var k in expected_results) {
+    var actual = results[k],
+        expected = expected_results[k];
 
-      if (typeof expected === 'function') {
-        expected(r[k]);
+    if (typeof expected === 'function') {
+      expected(r[k]);
+    } else {
+      var msg = (expected[1] || '') +
+          (' [expected: ' + expected[0] + ' / actual: ' + actual + ']');
+
+      if (expected && expected.length) {
+        assert.equal(actual, expected[0], msg);
       } else {
-        var msg = (expected[1] || '') +
-            (' [expected: ' + expected[0] + ' / actual: ' + actual + ']');
-
-        if (expected && expected.length) {
-          assert.equal(actual, expected[0], msg);
-        } else {
-          assert.equal(actual, expected, msg);
-        }
+        assert.equal(actual, expected, msg);
       }
     }
   }
+}
 
-  function alive(pid) {
-    try {
-      process.kill(pid, 'SIGCONT');
-      return true;
-    } catch (e) {
-      return false;
-    }
+function alive(pid) {
+  try {
+    process.kill(pid, 'SIGCONT');
+    return true;
+  } catch (e) {
+    return false;
   }
+}
diff --git a/test/parallel/test-cluster-worker-forced-exit.js b/test/parallel/test-cluster-worker-forced-exit.js
index 144eb0dd3a..54d2ce8a47 100644
--- a/test/parallel/test-cluster-worker-forced-exit.js
+++ b/test/parallel/test-cluster-worker-forced-exit.js
@@ -1,5 +1,6 @@
+'use strict';
 var assert = require('assert');
-var cluster = require('cluster')
+var cluster = require('cluster');
 var net = require('net');
 
 var SENTINEL = 42;
diff --git a/test/parallel/test-cluster-worker-init.js b/test/parallel/test-cluster-worker-init.js
index 87e0ce040a..38886af527 100644
--- a/test/parallel/test-cluster-worker-init.js
+++ b/test/parallel/test-cluster-worker-init.js
@@ -1,3 +1,4 @@
+'use strict';
 // test-cluster-worker-init.js
 // verifies that, when a child process is forked, the cluster.worker
 // object can receive messages as expected
diff --git a/test/parallel/test-cluster-worker-isconnected.js b/test/parallel/test-cluster-worker-isconnected.js
index ed839d4963..4477278e31 100644
--- a/test/parallel/test-cluster-worker-isconnected.js
+++ b/test/parallel/test-cluster-worker-isconnected.js
@@ -1,3 +1,4 @@
+'use strict';
 var cluster = require('cluster');
 var assert = require('assert');
 var util = require('util');
@@ -6,32 +7,32 @@ if (cluster.isMaster) {
   var worker = cluster.fork();
 
   assert.ok(worker.isConnected(),
-            "isConnected() should return true as soon as the worker has " +
-            "been created.");
+            'isConnected() should return true as soon as the worker has ' +
+            'been created.');
 
   worker.on('disconnect', function() {
     assert.ok(!worker.isConnected(),
-              "After a disconnect event has been emitted, " +
-              "isConncted should return false");
+              'After a disconnect event has been emitted, ' +
+              'isConncted should return false');
   });
 
   worker.on('message', function(msg) {
     if (msg === 'readyToDisconnect') {
       worker.disconnect();
     }
-  })
+  });
 
 } else {
   assert.ok(cluster.worker.isConnected(),
-            "isConnected() should return true from within a worker at all " +
-            "times.");
+            'isConnected() should return true from within a worker at all ' +
+            'times.');
 
   cluster.worker.process.on('disconnect', function() {
     assert.ok(!cluster.worker.isConnected(),
-              "isConnected() should return false from within a worker " +
-              "after its underlying process has been disconnected from " +
-              "the master");
-  })
+              'isConnected() should return false from within a worker ' +
+              'after its underlying process has been disconnected from ' +
+              'the master');
+  });
 
   process.send('readyToDisconnect');
 }
diff --git a/test/parallel/test-cluster-worker-isdead.js b/test/parallel/test-cluster-worker-isdead.js
index 11766c597f..045a620a9e 100644
--- a/test/parallel/test-cluster-worker-isdead.js
+++ b/test/parallel/test-cluster-worker-isdead.js
@@ -1,3 +1,4 @@
+'use strict';
 var cluster = require('cluster');
 var assert = require('assert');
 var net = require('net');
@@ -5,23 +6,23 @@ var net = require('net');
 if (cluster.isMaster) {
   var worker = cluster.fork();
   assert.ok(!worker.isDead(),
-            "isDead() should return false right after the worker has been " +
-            "created.");
+            'isDead() should return false right after the worker has been ' +
+            'created.');
 
   worker.on('exit', function() {
-      assert.ok(!worker.isConnected(),
-                "After an event has been emitted, " +
-                "isDead should return true");
-  })
+    assert.ok(!worker.isConnected(),
+              'After an event has been emitted, ' +
+              'isDead should return true');
+  });
 
   worker.on('message', function(msg) {
-      if (msg === 'readyToDie') {
-          worker.kill();
-      }
+    if (msg === 'readyToDie') {
+      worker.kill();
+    }
   });
 
 } else if (cluster.isWorker) {
   assert.ok(!cluster.worker.isDead(),
-            "isDead() should return false when called from within a worker");
+            'isDead() should return false when called from within a worker');
   process.send('readyToDie');
 }
diff --git a/test/parallel/test-cluster-worker-kill.js b/test/parallel/test-cluster-worker-kill.js
index 01da15fdca..c73cf2dbd5 100644
--- a/test/parallel/test-cluster-worker-kill.js
+++ b/test/parallel/test-cluster-worker-kill.js
@@ -1,3 +1,4 @@
+'use strict';
 // test-cluster-worker-kill.js
 // verifies that, when a child process is killed (we use SIGKILL)
 // - the parent receives the proper events in the proper order, no duplicates
@@ -23,14 +24,16 @@ if (cluster.isWorker) {
       cluster_emitDisconnect: [1, "the cluster did not emit 'disconnect'"],
       cluster_emitExit: [1, "the cluster did not emit 'exit'"],
       cluster_exitCode: [null, 'the cluster exited w/ incorrect exitCode'],
-      cluster_signalCode: [KILL_SIGNAL, 'the cluster exited w/ incorrect signalCode'],
+      cluster_signalCode: [KILL_SIGNAL,
+                           'the cluster exited w/ incorrect signalCode'],
       worker_emitDisconnect: [1, "the worker did not emit 'disconnect'"],
       worker_emitExit: [1, "the worker did not emit 'exit'"],
       worker_state: ['disconnected', 'the worker state is incorrect'],
       worker_suicideMode: [false, 'the worker.suicide flag is incorrect'],
       worker_died: [true, 'the worker is still running'],
       worker_exitCode: [null, 'the worker exited w/ incorrect exitCode'],
-      worker_signalCode: [KILL_SIGNAL, 'the worker exited w/ incorrect signalCode']
+      worker_signalCode: [KILL_SIGNAL,
+                          'the worker exited w/ incorrect signalCode']
     },
     results = {
       cluster_emitDisconnect: 0,
@@ -98,30 +101,30 @@ if (cluster.isWorker) {
 
 // some helper functions ...
 
-  function checkResults(expected_results, results) {
-    for (var k in expected_results) {
-      var actual = results[k],
-          expected = expected_results[k];
-
-      if (typeof expected === 'function') {
-        expected(r[k]);
+function checkResults(expected_results, results) {
+  for (var k in expected_results) {
+    var actual = results[k],
+        expected = expected_results[k];
+
+    if (typeof expected === 'function') {
+      expected(r[k]);
+    } else {
+      var msg = (expected[1] || '') +
+          (' [expected: ' + expected[0] + ' / actual: ' + actual + ']');
+      if (expected && expected.length) {
+        assert.equal(actual, expected[0], msg);
       } else {
-        var msg = (expected[1] || '') +
-            (' [expected: ' + expected[0] + ' / actual: ' + actual + ']');
-        if (expected && expected.length) {
-          assert.equal(actual, expected[0], msg);
-        } else {
-          assert.equal(actual, expected, msg);
-        }
+        assert.equal(actual, expected, msg);
       }
     }
   }
+}
 
-  function alive(pid) {
-    try {
-      process.kill(pid, 'SIGCONT');
-      return true;
-    } catch (e) {
-      return false;
-    }
+function alive(pid) {
+  try {
+    process.kill(pid, 'SIGCONT');
+    return true;
+  } catch (e) {
+    return false;
   }
+}
diff --git a/test/parallel/test-cluster-worker-no-exit.js b/test/parallel/test-cluster-worker-no-exit.js
index 034a4952e8..b44831694c 100644
--- a/test/parallel/test-cluster-worker-no-exit.js
+++ b/test/parallel/test-cluster-worker-no-exit.js
@@ -1,5 +1,6 @@
+'use strict';
 var assert = require('assert');
-var cluster = require('cluster')
+var cluster = require('cluster');
 var net = require('net');
 var common = require('../common');
 
@@ -21,7 +22,7 @@ var server;
 if (cluster.isMaster) {
   server = net.createServer(function(conn) {
     server.close();
-    worker.disconnect()
+    worker.disconnect();
     worker.once('disconnect', function() {
       setTimeout(function() {
         conn.destroy();
diff --git a/test/parallel/test-common.js b/test/parallel/test-common.js
index d15448bd36..7cbaf305d6 100644
--- a/test/parallel/test-common.js
+++ b/test/parallel/test-common.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-console-instance.js b/test/parallel/test-console-instance.js
index a91410b409..a80c6e57e4 100644
--- a/test/parallel/test-console-instance.js
+++ b/test/parallel/test-console-instance.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var Stream = require('stream');
@@ -15,7 +16,7 @@ assert.equal('function', typeof Console);
 
 // make sure that the Console constructor throws
 // when not given a writable stream instance
-assert.throws(function () {
+assert.throws(function() {
   new Console();
 }, /Console expects a writable stream/);
 
diff --git a/test/parallel/test-console-not-call-toString.js b/test/parallel/test-console-not-call-toString.js
index 9612a0f6ec..7846dbf277 100644
--- a/test/parallel/test-console-not-call-toString.js
+++ b/test/parallel/test-console-not-call-toString.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-console.js b/test/parallel/test-console.js
index 2e5060f383..982c83851f 100644
--- a/test/parallel/test-console.js
+++ b/test/parallel/test-console.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
@@ -7,17 +8,17 @@ assert.ok(process.stderr.writable);
 assert.equal('number', typeof process.stdout.fd);
 assert.equal('number', typeof process.stderr.fd);
 
-assert.throws(function () {
+assert.throws(function() {
   console.timeEnd('no such label');
 });
 
-assert.doesNotThrow(function () {
+assert.doesNotThrow(function() {
   console.time('label');
   console.timeEnd('label');
 });
 
 // an Object with a custom .inspect() function
-var custom_inspect = { foo: 'bar', inspect: function () { return 'inspect'; } };
+var custom_inspect = { foo: 'bar', inspect: function() { return 'inspect'; } };
 
 var stdout_write = global.process.stdout.write;
 var strings = [];
diff --git a/test/parallel/test-crypto-authenticated.js b/test/parallel/test-crypto-authenticated.js
index 0336871a56..75d733ff98 100644
--- a/test/parallel/test-crypto-authenticated.js
+++ b/test/parallel/test-crypto-authenticated.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
@@ -16,27 +17,33 @@ crypto.DEFAULT_ENCODING = 'buffer';
 //
 
 var TEST_CASES = [
-  { algo: 'aes-128-gcm', key: '6970787039613669314d623455536234',
+  { algo: 'aes-128-gcm',
+    key: '6970787039613669314d623455536234',
     iv: '583673497131313748307652', plain: 'Hello World!',
     ct: '4BE13896F64DFA2C2D0F2C76',
     tag: '272B422F62EB545EAA15B5FF84092447', tampered: false },
-  { algo: 'aes-128-gcm', key: '6970787039613669314d623455536234',
+  { algo: 'aes-128-gcm',
+    key: '6970787039613669314d623455536234',
     iv: '583673497131313748307652', plain: 'Hello World!',
     ct: '4BE13896F64DFA2C2D0F2C76', aad: '000000FF',
     tag: 'BA2479F66275665A88CB7B15F43EB005', tampered: false },
-  { algo: 'aes-128-gcm', key: '6970787039613669314d623455536234',
+  { algo: 'aes-128-gcm',
+    key: '6970787039613669314d623455536234',
     iv: '583673497131313748307652', plain: 'Hello World!',
     ct: '4BE13596F64DFA2C2D0FAC76',
     tag: '272B422F62EB545EAA15B5FF84092447', tampered: true },
-  { algo: 'aes-256-gcm', key: '337a54767a7233703637564336316a6d56353472495975313534357834546c59',
+  { algo: 'aes-256-gcm',
+    key: '337a54767a7233703637564336316a6d56353472495975313534357834546c59',
     iv: '36306950306836764a6f4561', plain: 'Hello node.js world!',
     ct: '58E62CFE7B1D274111A82267EBB93866E72B6C2A',
     tag: '9BB44F663BADABACAE9720881FB1EC7A', tampered: false },
-  { algo: 'aes-256-gcm', key: '337a54767a7233703637564336316a6d56353472495975313534357834546c59',
+  { algo: 'aes-256-gcm',
+    key: '337a54767a7233703637564336316a6d56353472495975313534357834546c59',
     iv: '36306950306836764a6f4561', plain: 'Hello node.js world!',
     ct: '58E62CFF7B1D274011A82267EBB93866E72B6C2B',
     tag: '9BB44F663BADABACAE9720881FB1EC7A', tampered: true },
-  { algo: 'aes-192-gcm', key: '1ed2233fa2223ef5d7df08546049406c7305220bca40d4c9',
+  { algo: 'aes-192-gcm',
+    key: '1ed2233fa2223ef5d7df08546049406c7305220bca40d4c9',
     iv: '0e1791e9db3bd21a9122c416', plain: 'Hello node.js world!',
     password: 'very bad password', aad: '63616c76696e',
     ct: 'DDA53A4059AA17B88756984995F7BBA3C636CC44',
diff --git a/test/parallel/test-crypto-binary-default.js b/test/parallel/test-crypto-binary-default.js
index dced723093..8623ff4774 100644
--- a/test/parallel/test-crypto-binary-default.js
+++ b/test/parallel/test-crypto-binary-default.js
@@ -1,3 +1,4 @@
+'use strict';
 // This is the same as test/simple/test-crypto, but from before the shift
 // to use buffers by default.
 
diff --git a/test/parallel/test-crypto-certificate.js b/test/parallel/test-crypto-certificate.js
index 9c98fda2bd..ab0d4ca9df 100644
--- a/test/parallel/test-crypto-certificate.js
+++ b/test/parallel/test-crypto-certificate.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-crypto-cipher-decipher.js b/test/parallel/test-crypto-cipher-decipher.js
index e82a08d703..931cf339bb 100644
--- a/test/parallel/test-crypto-cipher-decipher.js
+++ b/test/parallel/test-crypto-cipher-decipher.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
@@ -137,13 +138,13 @@ testCipher4(new Buffer('0123456789abcd0123456789'), new Buffer('12345678'));
 // not assert. See #4886.
 (function() {
   var c = crypto.createCipher('aes-256-cbc', 'secret');
-  try { c.final('xxx') } catch (e) { /* Ignore. */ }
-  try { c.final('xxx') } catch (e) { /* Ignore. */ }
-  try { c.final('xxx') } catch (e) { /* Ignore. */ }
+  try { c.final('xxx'); } catch (e) { /* Ignore. */ }
+  try { c.final('xxx'); } catch (e) { /* Ignore. */ }
+  try { c.final('xxx'); } catch (e) { /* Ignore. */ }
   var d = crypto.createDecipher('aes-256-cbc', 'secret');
-  try { d.final('xxx') } catch (e) { /* Ignore. */ }
-  try { d.final('xxx') } catch (e) { /* Ignore. */ }
-  try { d.final('xxx') } catch (e) { /* Ignore. */ }
+  try { d.final('xxx'); } catch (e) { /* Ignore. */ }
+  try { d.final('xxx'); } catch (e) { /* Ignore. */ }
+  try { d.final('xxx'); } catch (e) { /* Ignore. */ }
 })();
 
 // Regression test for #5482: string to Cipher#update() should not assert.
diff --git a/test/parallel/test-crypto-dh-odd-key.js b/test/parallel/test-crypto-dh-odd-key.js
index 46b3c3d8c6..1c7f4f69bb 100644
--- a/test/parallel/test-crypto-dh-odd-key.js
+++ b/test/parallel/test-crypto-dh-odd-key.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-crypto-dh.js b/test/parallel/test-crypto-dh.js
index 9eccc2f357..4978ab2ebb 100644
--- a/test/parallel/test-crypto-dh.js
+++ b/test/parallel/test-crypto-dh.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var constants = require('constants');
@@ -58,7 +59,7 @@ assert.equal(secret1, secret3);
 // Run this one twice to make sure that the dh3 clears its error properly
 (function() {
   var c = crypto.createDecipher('aes-128-ecb', '');
-  assert.throws(function() { c.final('utf8') }, /wrong final block length/);
+  assert.throws(function() { c.final('utf8'); }, /wrong final block length/);
 })();
 
 assert.throws(function() {
@@ -67,7 +68,7 @@ assert.throws(function() {
 
 (function() {
   var c = crypto.createDecipher('aes-128-ecb', '');
-  assert.throws(function() { c.final('utf8') }, /wrong final block length/);
+  assert.throws(function() { c.final('utf8'); }, /wrong final block length/);
 })();
 
 // Create a shared using a DH group.
diff --git a/test/parallel/test-crypto-domain.js b/test/parallel/test-crypto-domain.js
index 910e026d20..fe5e72982d 100644
--- a/test/parallel/test-crypto-domain.js
+++ b/test/parallel/test-crypto-domain.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var domain = require('domain');
diff --git a/test/parallel/test-crypto-domains.js b/test/parallel/test-crypto-domains.js
index eb5c77e12c..55c67b490d 100644
--- a/test/parallel/test-crypto-domains.js
+++ b/test/parallel/test-crypto-domains.js
@@ -1,8 +1,9 @@
+'use strict';
 var common = require('../common');
 var domain = require('domain');
 var assert = require('assert');
 var d = domain.create();
-var expect = ['pbkdf2', 'randomBytes', 'pseudoRandomBytes']
+var expect = ['pbkdf2', 'randomBytes', 'pseudoRandomBytes'];
 var errors = 0;
 
 if (!common.hasCrypto) {
@@ -15,30 +16,30 @@ process.on('exit', function() {
   assert.equal(errors, 3);
 });
 
-d.on('error', function (e) {
+d.on('error', function(e) {
   assert.equal(e.message, expect.shift());
   errors += 1;
 });
 
-d.run(function () {
+d.run(function() {
   one();
 
   function one() {
-    crypto.pbkdf2('a', 'b', 1, 8, function () {
+    crypto.pbkdf2('a', 'b', 1, 8, function() {
       two();
       throw new Error('pbkdf2');
     });
   }
 
   function two() {
-    crypto.randomBytes(4, function () {
+    crypto.randomBytes(4, function() {
       three();
       throw new Error('randomBytes');
     });
   }
 
   function three() {
-    crypto.pseudoRandomBytes(4, function () {
+    crypto.pseudoRandomBytes(4, function() {
       throw new Error('pseudoRandomBytes');
     });
   }
diff --git a/test/parallel/test-crypto-ecb.js b/test/parallel/test-crypto-ecb.js
index f924dfd29b..f1541ddeb4 100644
--- a/test/parallel/test-crypto-ecb.js
+++ b/test/parallel/test-crypto-ecb.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-crypto-from-binary.js b/test/parallel/test-crypto-from-binary.js
index ae450645dd..4c8d7338dd 100644
--- a/test/parallel/test-crypto-from-binary.js
+++ b/test/parallel/test-crypto-from-binary.js
@@ -1,3 +1,4 @@
+'use strict';
 // This is the same as test/simple/test-crypto, but from before the shift
 // to use buffers by default.
 
diff --git a/test/parallel/test-crypto-hash-stream-pipe.js b/test/parallel/test-crypto-hash-stream-pipe.js
index 795abd49a0..23feccea38 100644
--- a/test/parallel/test-crypto-hash-stream-pipe.js
+++ b/test/parallel/test-crypto-hash-stream-pipe.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
@@ -7,7 +8,7 @@ if (!common.hasCrypto) {
 }
 var crypto = require('crypto');
 
-var stream = require('stream')
+var stream = require('stream');
 var s = new stream.PassThrough();
 var h = crypto.createHash('sha1');
 var expect = '15987e60950cf22655b9323bc1e281f9c4aff47e';
diff --git a/test/parallel/test-crypto-hash.js b/test/parallel/test-crypto-hash.js
index af323ac4f6..5c542406cb 100644
--- a/test/parallel/test-crypto-hash.js
+++ b/test/parallel/test-crypto-hash.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var fs = require('fs');
diff --git a/test/parallel/test-crypto-hmac.js b/test/parallel/test-crypto-hmac.js
index 1a90811fe8..e234bd9160 100644
--- a/test/parallel/test-crypto-hmac.js
+++ b/test/parallel/test-crypto-hmac.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
@@ -56,7 +57,7 @@ var wikipedia = [
           '4292c5ad'
     }
   },
-]
+];
 
 for (var i = 0, l = wikipedia.length; i < l; i++) {
   for (var hash in wikipedia[i]['hmac']) {
diff --git a/test/parallel/test-crypto-padding-aes256.js b/test/parallel/test-crypto-padding-aes256.js
index de5fb7ca87..db75a07c9e 100644
--- a/test/parallel/test-crypto-padding-aes256.js
+++ b/test/parallel/test-crypto-padding-aes256.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
@@ -15,15 +16,15 @@ function aes256(decipherFinal) {
                        '0123456789abcdef0123456789abcdef', 'hex');
 
   function encrypt(val, pad) {
-        var c = crypto.createCipheriv('aes256', key, iv);
-        c.setAutoPadding(pad);
-        return c.update(val, 'utf8', 'binary') + c.final('binary');
+    var c = crypto.createCipheriv('aes256', key, iv);
+    c.setAutoPadding(pad);
+    return c.update(val, 'utf8', 'binary') + c.final('binary');
   }
 
   function decrypt(val, pad) {
-        var c = crypto.createDecipheriv('aes256', key, iv);
-        c.setAutoPadding(pad);
-        return c.update(val, 'binary', 'utf8') + c[decipherFinal]('utf8');
+    var c = crypto.createDecipheriv('aes256', key, iv);
+    c.setAutoPadding(pad);
+    return c.update(val, 'binary', 'utf8') + c[decipherFinal]('utf8');
   }
 
   // echo 0123456789abcdef0123456789abcdef \
diff --git a/test/parallel/test-crypto-padding.js b/test/parallel/test-crypto-padding.js
index 2cf78588f9..11b1729fde 100644
--- a/test/parallel/test-crypto-padding.js
+++ b/test/parallel/test-crypto-padding.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-crypto-pbkdf2.js b/test/parallel/test-crypto-pbkdf2.js
index 440c6162e3..88be15b68c 100644
--- a/test/parallel/test-crypto-pbkdf2.js
+++ b/test/parallel/test-crypto-pbkdf2.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-crypto-random.js b/test/parallel/test-crypto-random.js
index de1bfccf90..cac0c9b86c 100644
--- a/test/parallel/test-crypto-random.js
+++ b/test/parallel/test-crypto-random.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-crypto-rsa-dsa.js b/test/parallel/test-crypto-rsa-dsa.js
index 65986b49c9..127bbfb26d 100644
--- a/test/parallel/test-crypto-rsa-dsa.js
+++ b/test/parallel/test-crypto-rsa-dsa.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var fs = require('fs');
diff --git a/test/parallel/test-crypto-sign-verify.js b/test/parallel/test-crypto-sign-verify.js
index 5cac8948db..fb811e7f12 100644
--- a/test/parallel/test-crypto-sign-verify.js
+++ b/test/parallel/test-crypto-sign-verify.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var fs = require('fs');
diff --git a/test/parallel/test-crypto-stream.js b/test/parallel/test-crypto-stream.js
index 75ea5b13a4..fd970e061b 100644
--- a/test/parallel/test-crypto-stream.js
+++ b/test/parallel/test-crypto-stream.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var stream = require('stream');
@@ -14,24 +15,24 @@ function Stream2buffer(callback) {
   stream.Writable.call(this);
 
   this._buffers = [];
-  this.once('finish', function () {
+  this.once('finish', function() {
     callback(null, Buffer.concat(this._buffers));
   });
 }
 util.inherits(Stream2buffer, stream.Writable);
 
-Stream2buffer.prototype._write = function (data, encodeing, done) {
+Stream2buffer.prototype._write = function(data, encodeing, done) {
   this._buffers.push(data);
   return done(null);
 };
 
 // Create an md5 hash of "Hallo world"
 var hasher1 = crypto.createHash('md5');
-    hasher1.pipe(new Stream2buffer(common.mustCall(function end(err, hash) {
-      assert.equal(err, null);
-      assert.equal(hash.toString('hex'), '06460dadb35d3d503047ce750ceb2d07');
-    })));
-    hasher1.end('Hallo world');
+hasher1.pipe(new Stream2buffer(common.mustCall(function end(err, hash) {
+  assert.equal(err, null);
+  assert.equal(hash.toString('hex'), '06460dadb35d3d503047ce750ceb2d07');
+})));
+hasher1.end('Hallo world');
 
 // Simpler check for unpipe, setEncoding, pause and resume
 crypto.createHash('md5').unpipe({});
diff --git a/test/parallel/test-crypto-verify-failure.js b/test/parallel/test-crypto-verify-failure.js
index 6190ae247d..a4a9ec6981 100644
--- a/test/parallel/test-crypto-verify-failure.js
+++ b/test/parallel/test-crypto-verify-failure.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
@@ -23,11 +24,11 @@ var canSend = true;
 
 var server = tls.Server(options, function(socket) {
   setImmediate(function() {
-      console.log('sending');
-      verify();
-      setImmediate(function() {
-        socket.destroy();
-      });
+    console.log('sending');
+    verify();
+    setImmediate(function() {
+      socket.destroy();
+    });
   });
 });
 
diff --git a/test/parallel/test-crypto.js b/test/parallel/test-crypto.js
index d8a5099bbd..e3557943c6 100644
--- a/test/parallel/test-crypto.js
+++ b/test/parallel/test-crypto.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var util = require('util');
@@ -118,7 +119,7 @@ assert.throws(function() {
 }, /Bad input string/);
 
 assert.throws(function() {
-  var private = [
+  var priv = [
     '-----BEGIN RSA PRIVATE KEY-----',
     'MIGrAgEAAiEA+3z+1QNF2/unumadiwEr+C5vfhezsb3hp4jAnCNRpPcCAwEAAQIgQNriSQK4',
     'EFwczDhMZp2dvbcz7OUUyt36z3S4usFPHSECEQD/41K7SujrstBfoCPzwC1xAhEA+5kt4BJy',
@@ -127,7 +128,7 @@ assert.throws(function() {
     '-----END RSA PRIVATE KEY-----',
     ''
   ].join('\n');
-  crypto.createSign('RSA-SHA256').update('test').sign(private);
+  crypto.createSign('RSA-SHA256').update('test').sign(priv);
 }, /RSA_sign:digest too big for rsa key/);
 
 // Make sure memory isn't released before being returned
diff --git a/test/parallel/test-cwd-enoent-repl.js b/test/parallel/test-cwd-enoent-repl.js
index 64538f80b9..5f47b84be5 100644
--- a/test/parallel/test-cwd-enoent-repl.js
+++ b/test/parallel/test-cwd-enoent-repl.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var fs = require('fs');
diff --git a/test/parallel/test-cwd-enoent.js b/test/parallel/test-cwd-enoent.js
index 6e7b02c85d..0d0fde2481 100644
--- a/test/parallel/test-cwd-enoent.js
+++ b/test/parallel/test-cwd-enoent.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var fs = require('fs');
diff --git a/test/parallel/test-debug-port-cluster.js b/test/parallel/test-debug-port-cluster.js
index 96a6f6e7f4..5bec9dc720 100644
--- a/test/parallel/test-debug-port-cluster.js
+++ b/test/parallel/test-debug-port-cluster.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var spawn = require('child_process').spawn;
@@ -16,7 +17,7 @@ child.stderr.on('data', function(data) {
   var lines = data.toString().replace(/\r/g, '').trim().split('\n');
   var line = lines[0];
 
-  lines.forEach(function(ln) { console.log('> ' + ln) } );
+  lines.forEach(function(ln) { console.log('> ' + ln); } );
 
   if (line === 'all workers are running') {
     assertOutputLines();
@@ -33,8 +34,8 @@ process.on('exit', function onExit() {
 var assertOutputLines = common.mustCall(function() {
   var expectedLines = [
     'Debugger listening on port ' + port,
-    'Debugger listening on port ' + (port+1),
-    'Debugger listening on port ' + (port+2),
+    'Debugger listening on port ' + (port + 1),
+    'Debugger listening on port ' + (port + 2),
   ];
 
   // Do not assume any particular order of output messages,
@@ -42,7 +43,7 @@ var assertOutputLines = common.mustCall(function() {
   // start up
   outputLines.sort();
 
-  assert.equal(outputLines.length, expectedLines.length)
+  assert.equal(outputLines.length, expectedLines.length);
   for (var i = 0; i < expectedLines.length; i++)
     assert.equal(outputLines[i], expectedLines[i]);
 });
diff --git a/test/parallel/test-debug-port-from-cmdline.js b/test/parallel/test-debug-port-from-cmdline.js
index 4ed2e84918..deb7ae241a 100644
--- a/test/parallel/test-debug-port-from-cmdline.js
+++ b/test/parallel/test-debug-port-from-cmdline.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var spawn = require('child_process').spawn;
diff --git a/test/parallel/test-debug-signal-cluster.js b/test/parallel/test-debug-signal-cluster.js
index 772ee6f1e6..6572ef50af 100644
--- a/test/parallel/test-debug-signal-cluster.js
+++ b/test/parallel/test-debug-signal-cluster.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var spawn = require('child_process').spawn;
diff --git a/test/parallel/test-delayed-require.js b/test/parallel/test-delayed-require.js
index 161f3d2ffa..5fa82f236c 100644
--- a/test/parallel/test-delayed-require.js
+++ b/test/parallel/test-delayed-require.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-dgram-address.js b/test/parallel/test-dgram-address.js
index 6da1c6cda4..f128ce5110 100644
--- a/test/parallel/test-dgram-address.js
+++ b/test/parallel/test-dgram-address.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var dgram = require('dgram');
diff --git a/test/parallel/test-dgram-bind-default-address.js b/test/parallel/test-dgram-bind-default-address.js
index 28db7d9fa6..03e8afb991 100644
--- a/test/parallel/test-dgram-bind-default-address.js
+++ b/test/parallel/test-dgram-bind-default-address.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var dgram = require('dgram');
diff --git a/test/parallel/test-dgram-bind-shared-ports.js b/test/parallel/test-dgram-bind-shared-ports.js
index 4cfe4b5f9a..91a48a260f 100644
--- a/test/parallel/test-dgram-bind-shared-ports.js
+++ b/test/parallel/test-dgram-bind-shared-ports.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var cluster = require('cluster');
diff --git a/test/parallel/test-dgram-bind.js b/test/parallel/test-dgram-bind.js
index 72f2f2c2b0..6d35534cb5 100644
--- a/test/parallel/test-dgram-bind.js
+++ b/test/parallel/test-dgram-bind.js
@@ -1,10 +1,11 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var dgram = require('dgram');
 
 var socket = dgram.createSocket('udp4');
 
-socket.on('listening', function () {
+socket.on('listening', function() {
   socket.close();
 });
 
diff --git a/test/parallel/test-dgram-bytes-length.js b/test/parallel/test-dgram-bytes-length.js
index 9698a0b465..9f8c39eb04 100644
--- a/test/parallel/test-dgram-bytes-length.js
+++ b/test/parallel/test-dgram-bytes-length.js
@@ -1,10 +1,12 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var dgram = require('dgram');
 
 var message = new Buffer('Some bytes');
 var client = dgram.createSocket('udp4');
-client.send(message, 0, message.length, 41234, "localhost", function(err, bytes) {
+client.send(message, 0, message.length, 41234, 'localhost',
+            function(err, bytes) {
   assert.strictEqual(bytes, message.length);
   client.close();
 });
diff --git a/test/parallel/test-dgram-close-is-not-callback.js b/test/parallel/test-dgram-close-is-not-callback.js
index 94035af970..6fc4901fa1 100644
--- a/test/parallel/test-dgram-close-is-not-callback.js
+++ b/test/parallel/test-dgram-close-is-not-callback.js
@@ -1,3 +1,4 @@
+'use strict';
 var assert = require('assert');
 var common = require('../common');
 var dgram = require('dgram');
diff --git a/test/parallel/test-dgram-close.js b/test/parallel/test-dgram-close.js
index bd4af66323..7e9dd4ef52 100644
--- a/test/parallel/test-dgram-close.js
+++ b/test/parallel/test-dgram-close.js
@@ -1,3 +1,4 @@
+'use strict';
 // Ensure that if a dgram socket is closed before the DNS lookup completes, it
 // won't crash.
 
diff --git a/test/parallel/test-dgram-empty-packet.js b/test/parallel/test-dgram-empty-packet.js
index a629df8e1b..797012b883 100644
--- a/test/parallel/test-dgram-empty-packet.js
+++ b/test/parallel/test-dgram-empty-packet.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
@@ -22,15 +23,15 @@ function callback() {
     clearTimeout(timer);
     client.close();
   } else if (callbacks > 2) {
-    throw new Error("the callbacks should be called only two times");
+    throw new Error('the callbacks should be called only two times');
   }
 }
 
-client.on('message', function (buffer, bytes) {
+client.on('message', function(buffer, bytes) {
   callback();
 });
 
-client.send(new Buffer(1), 0, 0, common.PORT, "127.0.0.1", function (err, len) {
+client.send(new Buffer(1), 0, 0, common.PORT, '127.0.0.1', function(err, len) {
   callback();
 });
 
diff --git a/test/parallel/test-dgram-error-message-address.js b/test/parallel/test-dgram-error-message-address.js
index 95b1e062e3..eca2ccce4f 100644
--- a/test/parallel/test-dgram-error-message-address.js
+++ b/test/parallel/test-dgram-error-message-address.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var dgram = require('dgram');
diff --git a/test/parallel/test-dgram-exclusive-implicit-bind.js b/test/parallel/test-dgram-exclusive-implicit-bind.js
index 057b891eb6..077e1812b9 100644
--- a/test/parallel/test-dgram-exclusive-implicit-bind.js
+++ b/test/parallel/test-dgram-exclusive-implicit-bind.js
@@ -1,3 +1,4 @@
+'use strict';
 // Copyright Joyent, Inc. and other Node contributors.
 //
 // Permission is hereby granted, free of charge, to any person obtaining a
diff --git a/test/parallel/test-dgram-implicit-bind.js b/test/parallel/test-dgram-implicit-bind.js
index adf6f52b49..8b78bd66c6 100644
--- a/test/parallel/test-dgram-implicit-bind.js
+++ b/test/parallel/test-dgram-implicit-bind.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var dgram = require('dgram');
diff --git a/test/parallel/test-dgram-listen-after-bind.js b/test/parallel/test-dgram-listen-after-bind.js
index c5f09b8467..2aac7ae9cf 100644
--- a/test/parallel/test-dgram-listen-after-bind.js
+++ b/test/parallel/test-dgram-listen-after-bind.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var dgram = require('dgram');
@@ -7,16 +8,16 @@ var socket = dgram.createSocket('udp4');
 socket.bind();
 
 var fired = false;
-var timer = setTimeout(function () {
+var timer = setTimeout(function() {
   socket.close();
 }, 100);
 
-socket.on('listening', function () {
+socket.on('listening', function() {
   clearTimeout(timer);
   fired = true;
   socket.close();
 });
 
-socket.on('close', function () {
+socket.on('close', function() {
   assert(fired, 'listening should fire after bind');
 });
diff --git a/test/parallel/test-dgram-msgsize.js b/test/parallel/test-dgram-msgsize.js
index 474ab82f44..6330e2a82b 100644
--- a/test/parallel/test-dgram-msgsize.js
+++ b/test/parallel/test-dgram-msgsize.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var dgram = require('dgram');
diff --git a/test/parallel/test-dgram-multicast-setTTL.js b/test/parallel/test-dgram-multicast-setTTL.js
index d849945fab..f48fc7118e 100644
--- a/test/parallel/test-dgram-multicast-setTTL.js
+++ b/test/parallel/test-dgram-multicast-setTTL.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common'),
     assert = require('assert'),
     dgram = require('dgram'),
@@ -5,7 +6,7 @@ var common = require('../common'),
     socket = dgram.createSocket('udp4');
 
 socket.bind(common.PORT);
-socket.on('listening', function () {
+socket.on('listening', function() {
   socket.setMulticastTTL(16);
 
   //Try to set an invalid TTL (valid ttl is > 0 and < 256)
diff --git a/test/parallel/test-dgram-oob-buffer.js b/test/parallel/test-dgram-oob-buffer.js
index bbbdc4dafe..b64c7236af 100644
--- a/test/parallel/test-dgram-oob-buffer.js
+++ b/test/parallel/test-dgram-oob-buffer.js
@@ -1,3 +1,4 @@
+'use strict';
 // Some operating systems report errors when an UDP message is sent to an
 // unreachable host. This error can be reported by sendto() and even by
 // recvfrom(). Node should not propagate this error to the user.
diff --git a/test/parallel/test-dgram-pingpong.js b/test/parallel/test-dgram-pingpong.js
index b7d7a0067e..29ab92757b 100644
--- a/test/parallel/test-dgram-pingpong.js
+++ b/test/parallel/test-dgram-pingpong.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var Buffer = require('buffer').Buffer;
diff --git a/test/parallel/test-dgram-ref.js b/test/parallel/test-dgram-ref.js
index 8d100eb078..d689a45e36 100644
--- a/test/parallel/test-dgram-ref.js
+++ b/test/parallel/test-dgram-ref.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var dgram = require('dgram');
 
diff --git a/test/parallel/test-dgram-regress-4496.js b/test/parallel/test-dgram-regress-4496.js
index a200716c0f..fcb8d026bc 100644
--- a/test/parallel/test-dgram-regress-4496.js
+++ b/test/parallel/test-dgram-regress-4496.js
@@ -1,3 +1,4 @@
+'use strict';
 // Remove this test once we support sending strings.
 
 var common = require('../common');
@@ -6,6 +7,6 @@ var dgram = require('dgram');
 
 // Should throw but not crash.
 var socket = dgram.createSocket('udp4');
-assert.throws(function() { socket.send(true, 0, 1, 1, 'host') }, TypeError);
-assert.throws(function() { socket.sendto(5, 0, 1, 1, 'host') }, TypeError);
+assert.throws(function() { socket.send(true, 0, 1, 1, 'host'); }, TypeError);
+assert.throws(function() { socket.sendto(5, 0, 1, 1, 'host'); }, TypeError);
 socket.close();
diff --git a/test/parallel/test-dgram-send-bad-arguments.js b/test/parallel/test-dgram-send-bad-arguments.js
index ab18784ccc..ccd10e0055 100644
--- a/test/parallel/test-dgram-send-bad-arguments.js
+++ b/test/parallel/test-dgram-send-bad-arguments.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var dgram = require('dgram');
diff --git a/test/parallel/test-dgram-send-callback-buffer-length.js b/test/parallel/test-dgram-send-callback-buffer-length.js
index 5596a7242f..a34c5e2eb6 100644
--- a/test/parallel/test-dgram-send-callback-buffer-length.js
+++ b/test/parallel/test-dgram-send-callback-buffer-length.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
@@ -15,11 +16,11 @@ offset = 20;
 len = buf.length - offset;
 
 
-client.send(buf, offset, len, common.PORT, "127.0.0.1", function (err, bytes) {
-    assert.notEqual(bytes, buf.length);
-    assert.equal(bytes, buf.length - offset);
-    clearTimeout(timer);
-    client.close();
+client.send(buf, offset, len, common.PORT, '127.0.0.1', function(err, bytes) {
+  assert.notEqual(bytes, buf.length);
+  assert.equal(bytes, buf.length - offset);
+  clearTimeout(timer);
+  client.close();
 });
 
 timer = setTimeout(function() {
diff --git a/test/parallel/test-dgram-send-empty-buffer.js b/test/parallel/test-dgram-send-empty-buffer.js
index e2ca937d6a..ab66e0545e 100644
--- a/test/parallel/test-dgram-send-empty-buffer.js
+++ b/test/parallel/test-dgram-send-empty-buffer.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
@@ -16,13 +17,13 @@ client = dgram.createSocket('udp4');
 
 client.bind(common.PORT);
 
-client.on('message', function (buffer, bytes) {
+client.on('message', function(buffer, bytes) {
   clearTimeout(timer);
   client.close();
 });
 
 buf = new Buffer(0);
-client.send(buf, 0, 0, common.PORT, "127.0.0.1", function (err, len) { });
+client.send(buf, 0, 0, common.PORT, '127.0.0.1', function(err, len) { });
 
 timer = setTimeout(function() {
   throw new Error('Timeout');
diff --git a/test/parallel/test-dgram-udp4.js b/test/parallel/test-dgram-udp4.js
index cde49c1b1b..f81dec398f 100644
--- a/test/parallel/test-dgram-udp4.js
+++ b/test/parallel/test-dgram-udp4.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-dgram-unref.js b/test/parallel/test-dgram-unref.js
index 94f7ba739c..2add3d28c4 100644
--- a/test/parallel/test-dgram-unref.js
+++ b/test/parallel/test-dgram-unref.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-dh-padding.js b/test/parallel/test-dh-padding.js
index 3e30fd34e7..8726537632 100644
--- a/test/parallel/test-dh-padding.js
+++ b/test/parallel/test-dh-padding.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-dns-cares-domains.js b/test/parallel/test-dns-cares-domains.js
index 5c6d07cfe5..cb651c5f5a 100644
--- a/test/parallel/test-dns-cares-domains.js
+++ b/test/parallel/test-dns-cares-domains.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var dns = require('dns');
@@ -13,13 +14,13 @@ var methods = [
   'resolveSrv',
   'resolveNaptr',
   'resolveSoa'
-]
+];
 
 methods.forEach(function(method) {
   var d = domain.create();
   d.run(function() {
     dns[method]('google.com', function() {
-      assert.strictEqual(process.domain, d, method + ' retains domain')
+      assert.strictEqual(process.domain, d, method + ' retains domain');
     });
   });
 });
diff --git a/test/parallel/test-dns-lookup-cb-error.js b/test/parallel/test-dns-lookup-cb-error.js
index 2aa9ffe7d6..330dfb5d57 100644
--- a/test/parallel/test-dns-lookup-cb-error.js
+++ b/test/parallel/test-dns-lookup-cb-error.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var cares = process.binding('cares_wrap');
diff --git a/test/parallel/test-dns-regress-6244.js b/test/parallel/test-dns-regress-6244.js
index 8bed54f1b2..7ed7a89206 100644
--- a/test/parallel/test-dns-regress-6244.js
+++ b/test/parallel/test-dns-regress-6244.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var dns = require('dns');
 
diff --git a/test/parallel/test-dns-regress-7070.js b/test/parallel/test-dns-regress-7070.js
index 79f0d7d9e0..1fbd7f07a9 100644
--- a/test/parallel/test-dns-regress-7070.js
+++ b/test/parallel/test-dns-regress-7070.js
@@ -1,7 +1,8 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var dns = require('dns');
 
 // Should not raise assertion error. Issue #7070
-assert.throws(function () { dns.resolveNs([]); }); // bad name
-assert.throws(function () { dns.resolveNs(''); }); // bad callback
+assert.throws(function() { dns.resolveNs([]); }); // bad name
+assert.throws(function() { dns.resolveNs(''); }); // bad callback
diff --git a/test/parallel/test-dns.js b/test/parallel/test-dns.js
index 1de9bbfdf7..abc7edbf59 100644
--- a/test/parallel/test-dns.js
+++ b/test/parallel/test-dns.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
@@ -12,16 +13,16 @@ var goog = [
   '8.8.8.8',
   '8.8.4.4',
 ];
-assert.doesNotThrow(function () { dns.setServers(goog) });
+assert.doesNotThrow(function() { dns.setServers(goog); });
 assert.deepEqual(dns.getServers(), goog);
-assert.throws(function () { dns.setServers(['foobar']) });
+assert.throws(function() { dns.setServers(['foobar']); });
 assert.deepEqual(dns.getServers(), goog);
 
 var goog6 = [
   '2001:4860:4860::8888',
   '2001:4860:4860::8844',
 ];
-assert.doesNotThrow(function () { dns.setServers(goog6) });
+assert.doesNotThrow(function() { dns.setServers(goog6); });
 assert.deepEqual(dns.getServers(), goog6);
 
 goog6.push('4.4.4.4');
@@ -39,7 +40,7 @@ var portsExpected = [
 dns.setServers(ports);
 assert.deepEqual(dns.getServers(), portsExpected);
 
-assert.doesNotThrow(function () { dns.setServers([]); });
+assert.doesNotThrow(function() { dns.setServers([]); });
 assert.deepEqual(dns.getServers(), []);
 
 assert.throws(function() {
diff --git a/test/parallel/test-domain-abort-on-uncaught.js b/test/parallel/test-domain-abort-on-uncaught.js
index e11bbcc6bc..f4884aa8f3 100644
--- a/test/parallel/test-domain-abort-on-uncaught.js
+++ b/test/parallel/test-domain-abort-on-uncaught.js
@@ -1,3 +1,4 @@
+'use strict';
 // Flags: --abort_on_uncaught_exception
 
 var common = require('../common');
@@ -18,7 +19,7 @@ process.on('exit', function() {
   assert.equal(errors, tests.length);
 });
 
-tests.forEach(function(test) { test(); })
+tests.forEach(function(test) { test(); });
 
 function nextTick() {
   var d = domain.create();
@@ -84,10 +85,10 @@ function netServer() {
       conn.pipe(conn);
     });
     server.listen(common.PORT, '0.0.0.0', function() {
-      var conn = net.connect(common.PORT, '0.0.0.0')
+      var conn = net.connect(common.PORT, '0.0.0.0');
       conn.once('data', function() {
         throw new Error('ok');
-      })
+      });
       conn.end('ok');
       server.close();
     });
diff --git a/test/parallel/test-domain-crypto.js b/test/parallel/test-domain-crypto.js
index dc183b7bda..9604747495 100644
--- a/test/parallel/test-domain-crypto.js
+++ b/test/parallel/test-domain-crypto.js
@@ -1,3 +1,4 @@
+/* eslint-disable strict */
 try {
   var crypto = require('crypto');
 } catch (e) {
diff --git a/test/parallel/test-domain-enter-exit.js b/test/parallel/test-domain-enter-exit.js
index 32ec0ca247..5cf0d9c54a 100644
--- a/test/parallel/test-domain-enter-exit.js
+++ b/test/parallel/test-domain-enter-exit.js
@@ -1,3 +1,4 @@
+'use strict';
 // Make sure the domain stack is a stack
 
 var assert = require('assert');
@@ -5,7 +6,7 @@ var domain = require('domain');
 
 function names(array) {
   return array.map(function(d) {
-    return d.name
+    return d.name;
   }).join(', ');
 }
 
diff --git a/test/parallel/test-domain-exit-dispose-again.js b/test/parallel/test-domain-exit-dispose-again.js
index c651181092..d7046481d1 100644
--- a/test/parallel/test-domain-exit-dispose-again.js
+++ b/test/parallel/test-domain-exit-dispose-again.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var domain = require('domain');
@@ -6,7 +7,7 @@ var disposalFailed = false;
 // no matter what happens, we should increment a 10 times.
 var a = 0;
 log();
-function log(){
+function log() {
   console.log(a++, process.domain);
   if (a < 10) setTimeout(log, 20);
 }
@@ -16,7 +17,7 @@ var secondTimerRan = false;
 // in 50ms we'll throw an error.
 setTimeout(err, 50);
 setTimeout(secondTimer, 50);
-function err(){
+function err() {
   var d = domain.create();
   d.on('error', handle);
   d.run(err2);
diff --git a/test/parallel/test-domain-exit-dispose.js b/test/parallel/test-domain-exit-dispose.js
index a01cee5c73..90e7210ce2 100644
--- a/test/parallel/test-domain-exit-dispose.js
+++ b/test/parallel/test-domain-exit-dispose.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var domain = require('domain');
@@ -6,14 +7,14 @@ var disposalFailed = false;
 // no matter what happens, we should increment a 10 times.
 var a = 0;
 log();
-function log(){
+function log() {
   console.log(a++, process.domain);
   if (a < 10) setTimeout(log, 20);
 }
 
 // in 50ms we'll throw an error.
 setTimeout(err, 50);
-function err(){
+function err() {
   var d = domain.create();
   d.on('error', handle);
   d.run(err2);
diff --git a/test/parallel/test-domain-from-timer.js b/test/parallel/test-domain-from-timer.js
index 91dff3875c..93661b419b 100644
--- a/test/parallel/test-domain-from-timer.js
+++ b/test/parallel/test-domain-from-timer.js
@@ -1,3 +1,4 @@
+'use strict';
 // Simple tests of most basic domain functionality.
 
 var common = require('../common');
@@ -10,7 +11,7 @@ setTimeout(function() {
   var d = domain.create();
   d.run(function() {
     process.nextTick(function() {
-      console.trace('in nexttick', process.domain === d)
+      console.trace('in nexttick', process.domain === d);
       assert.equal(process.domain, d);
     });
   });
diff --git a/test/parallel/test-domain-http-server.js b/test/parallel/test-domain-http-server.js
index 77e1091171..7cabf205e8 100644
--- a/test/parallel/test-domain-http-server.js
+++ b/test/parallel/test-domain-http-server.js
@@ -1,3 +1,4 @@
+'use strict';
 var domain = require('domain');
 var http = require('http');
 var assert = require('assert');
diff --git a/test/parallel/test-domain-implicit-fs.js b/test/parallel/test-domain-implicit-fs.js
index 4a00b9a17a..fd21dcafe0 100644
--- a/test/parallel/test-domain-implicit-fs.js
+++ b/test/parallel/test-domain-implicit-fs.js
@@ -1,3 +1,4 @@
+'use strict';
 // Simple tests of most basic domain functionality.
 
 var common = require('../common');
diff --git a/test/parallel/test-domain-multi.js b/test/parallel/test-domain-multi.js
index 270ecde496..e5f9f6748b 100644
--- a/test/parallel/test-domain-multi.js
+++ b/test/parallel/test-domain-multi.js
@@ -1,3 +1,4 @@
+'use strict';
 // Tests of multiple domains happening at once.
 
 var common = require('../common');
@@ -20,7 +21,7 @@ a.on('error', function(er) {
 
 
 var http = require('http');
-var server = http.createServer(function (req, res) {
+var server = http.createServer(function(req, res) {
   // child domain of a.
   var b = domain.create();
   a.add(b);
@@ -31,9 +32,9 @@ var server = http.createServer(function (req, res) {
   b.add(req);
   b.add(res);
 
-  b.on('error', function (er) {
+  b.on('error', function(er) {
     caughtB = true;
-    console.error('Error encountered', er)
+    console.error('Error encountered', er);
     if (res) {
       res.writeHead(500);
       res.end('An error occurred');
@@ -52,7 +53,7 @@ var server = http.createServer(function (req, res) {
 }).listen(common.PORT);
 
 var c = domain.create();
-var req = http.get({ host: 'localhost', port: common.PORT })
+var req = http.get({ host: 'localhost', port: common.PORT });
 
 // add the request to the C domain
 c.add(req);
@@ -71,7 +72,7 @@ c.on('error', function(er) {
 
 process.on('exit', function() {
   assert.equal(caughtA, false);
-  assert.equal(caughtB, true)
-  assert.equal(caughtC, true)
+  assert.equal(caughtB, true);
+  assert.equal(caughtC, true);
   console.log('ok - Errors went where they were supposed to go');
 });
diff --git a/test/parallel/test-domain-nested-throw.js b/test/parallel/test-domain-nested-throw.js
index 87039bb3f9..0fba3001b5 100644
--- a/test/parallel/test-domain-nested-throw.js
+++ b/test/parallel/test-domain-nested-throw.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
@@ -50,7 +51,7 @@ function throw2() {
 function inner(throw1, throw2) {
   var domain1 = domain.createDomain();
 
-  domain1.on('error', function (err) {
+  domain1.on('error', function(err) {
     if (gotDomain1Error) {
       console.error('got domain 1 twice');
       process.exit(1);
@@ -60,7 +61,7 @@ function inner(throw1, throw2) {
     throw2();
   });
 
-  domain1.run(function () {
+  domain1.run(function() {
     throw1();
   });
 }
@@ -68,7 +69,7 @@ function inner(throw1, throw2) {
 function outer() {
   var domain2 = domain.createDomain();
 
-  domain2.on('error', function (err) {
+  domain2.on('error', function(err) {
     if (gotDomain2Error) {
       console.error('got domain 2 twice');
       process.exit(1);
@@ -76,7 +77,7 @@ function outer() {
     gotDomain2Error = true;
   });
 
-  domain2.run(function () {
+  domain2.run(function() {
     inner(throw1, throw2);
   });
 }
diff --git a/test/parallel/test-domain-nested.js b/test/parallel/test-domain-nested.js
index 9334c287ba..d0ef072339 100644
--- a/test/parallel/test-domain-nested.js
+++ b/test/parallel/test-domain-nested.js
@@ -1,3 +1,4 @@
+'use strict';
 // Make sure that the nested domains don't cause the domain stack to grow
 
 var assert = require('assert');
@@ -10,11 +11,11 @@ process.on('exit', function(c) {
 domain.create().run(function() {
   domain.create().run(function() {
     domain.create().run(function() {
-      domain.create().on("error", function(e) {
+      domain.create().on('error', function(e) {
           // Don't need to do anything here
       }).run(function() {
-        throw new Error("died")
-      })
-    })
-  })
-})
+        throw new Error('died');
+      });
+    });
+  });
+});
diff --git a/test/parallel/test-domain-safe-exit.js b/test/parallel/test-domain-safe-exit.js
index 029687411a..6661c577b3 100644
--- a/test/parallel/test-domain-safe-exit.js
+++ b/test/parallel/test-domain-safe-exit.js
@@ -1,3 +1,4 @@
+'use strict';
 // Make sure the domain stack doesn't get clobbered by un-matched .exit()
 
 var assert = require('assert');
diff --git a/test/parallel/test-domain-stack.js b/test/parallel/test-domain-stack.js
index be611a8721..f9b5648a66 100644
--- a/test/parallel/test-domain-stack.js
+++ b/test/parallel/test-domain-stack.js
@@ -1,3 +1,4 @@
+'use strict';
 // Make sure that the domain stack doesn't get out of hand.
 
 var common = require('../common');
diff --git a/test/parallel/test-domain-timers.js b/test/parallel/test-domain-timers.js
index 5a34bc7449..7530c9edba 100644
--- a/test/parallel/test-domain-timers.js
+++ b/test/parallel/test-domain-timers.js
@@ -1,3 +1,4 @@
+'use strict';
 var domain = require('domain');
 var assert = require('assert');
 var common = require('../common');
diff --git a/test/parallel/test-domain.js b/test/parallel/test-domain.js
index a3f7b76848..9cca05178e 100644
--- a/test/parallel/test-domain.js
+++ b/test/parallel/test-domain.js
@@ -1,3 +1,4 @@
+'use strict';
 // Simple tests of most basic domain functionality.
 
 var common = require('../common');
@@ -15,7 +16,7 @@ d.on('error', function(er) {
   console.error('caught', er && (er.message || er));
 
   var er_message = er.message;
-  var er_path = er.path
+  var er_path = er.path;
 
   // On windows, error messages can contain full path names. If this is the
   // case, remove the directory part.
@@ -58,7 +59,8 @@ d.on('error', function(er) {
       assert.equal(typeof er.errno, 'number');
       break;
 
-    case "ENOENT: no such file or directory, open 'stream for nonexistent file'":
+    case
+    "ENOENT: no such file or directory, open 'stream for nonexistent file'":
       assert.equal(typeof er.errno, 'number');
       assert.equal(er.code, 'ENOENT');
       assert.equal(er_path, 'stream for nonexistent file');
@@ -129,7 +131,7 @@ expectCaught++;
 // set up while in the scope of the d domain.
 d.run(function() {
   process.nextTick(function() {
-    var i = setInterval(function () {
+    var i = setInterval(function() {
       clearInterval(i);
       setTimeout(function() {
         fs.stat('this file does not exist', function(er, stat) {
@@ -178,7 +180,7 @@ expectCaught++;
 
 // intercepted should never pass first argument to callback
 function fn2(data) {
-  assert.equal(data, 'data', 'should not be null err argument')
+  assert.equal(data, 'data', 'should not be null err argument');
 }
 
 var bound = d.intercept(fn2);
@@ -220,7 +222,7 @@ expectCaught++;
 var implicit;
 
 d.run(function() {
-  implicit = new events.EventEmitter;
+  implicit = new events.EventEmitter();
 });
 
 setTimeout(function() {
@@ -230,24 +232,24 @@ setTimeout(function() {
 expectCaught++;
 
 
-var result = d.run(function () {
+var result = d.run(function() {
   return 'return value';
 });
 assert.equal(result, 'return value');
 
 
 // check if the executed function take in count the applied parameters
-result = d.run(function (a, b) {
+result = d.run(function(a, b) {
   return a + ' ' + b;
 }, 'return', 'value');
 assert.equal(result, 'return value');
 
 
-var fst = fs.createReadStream('stream for nonexistent file')
-d.add(fst)
+var fst = fs.createReadStream('stream for nonexistent file');
+d.add(fst);
 expectCaught++;
 
-[42, null, , false, function(){}, 'string'].forEach(function(something) {
+[42, null, , false, function() {}, 'string'].forEach(function(something) {
   var d = new domain.Domain();
   d.run(function() {
     process.nextTick(function() {
diff --git a/test/parallel/test-error-reporting.js b/test/parallel/test-error-reporting.js
index 9caabe0d61..0b5c765287 100644
--- a/test/parallel/test-error-reporting.js
+++ b/test/parallel/test-error-reporting.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var exec = require('child_process').exec;
diff --git a/test/parallel/test-eval-require.js b/test/parallel/test-eval-require.js
index eeaa624b39..f966b5a98c 100644
--- a/test/parallel/test-eval-require.js
+++ b/test/parallel/test-eval-require.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var spawn = require('child_process').spawn;
diff --git a/test/parallel/test-eval.js b/test/parallel/test-eval.js
index e504ceca12..d3a83fbd5a 100644
--- a/test/parallel/test-eval.js
+++ b/test/parallel/test-eval.js
@@ -1,3 +1,4 @@
+'use strict';
 require('../common');
 var util = require('util');
 var assert = require('assert');
diff --git a/test/parallel/test-event-emitter-add-listeners.js b/test/parallel/test-event-emitter-add-listeners.js
index 7cc302e0b8..cc30fd24ad 100644
--- a/test/parallel/test-event-emitter-add-listeners.js
+++ b/test/parallel/test-event-emitter-add-listeners.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var events = require('events');
@@ -53,7 +54,7 @@ process.on('exit', function() {
 
 var listen1 = function listen1() {};
 var listen2 = function listen2() {};
-var e1 = new events.EventEmitter;
+var e1 = new events.EventEmitter();
 e1.once('newListener', function() {
   assert.deepEqual(e1.listeners('hello'), []);
   e1.once('newListener', function() {
diff --git a/test/parallel/test-event-emitter-check-listener-leaks.js b/test/parallel/test-event-emitter-check-listener-leaks.js
index 25e53d2c6a..90f686b542 100644
--- a/test/parallel/test-event-emitter-check-listener-leaks.js
+++ b/test/parallel/test-event-emitter-check-listener-leaks.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var events = require('events');
diff --git a/test/parallel/test-event-emitter-errors.js b/test/parallel/test-event-emitter-errors.js
index 5ee2c87052..49203961ac 100644
--- a/test/parallel/test-event-emitter-errors.js
+++ b/test/parallel/test-event-emitter-errors.js
@@ -1,3 +1,4 @@
+'use strict';
 var EventEmitter = require('events');
 var assert = require('assert');
 
diff --git a/test/parallel/test-event-emitter-get-max-listeners.js b/test/parallel/test-event-emitter-get-max-listeners.js
index f221fa86fb..ba584c9dde 100644
--- a/test/parallel/test-event-emitter-get-max-listeners.js
+++ b/test/parallel/test-event-emitter-get-max-listeners.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var EventEmitter = require('events');
diff --git a/test/parallel/test-event-emitter-listeners-side-effects.js b/test/parallel/test-event-emitter-listeners-side-effects.js
index 46eedf812d..de541c535e 100644
--- a/test/parallel/test-event-emitter-listeners-side-effects.js
+++ b/test/parallel/test-event-emitter-listeners-side-effects.js
@@ -1,3 +1,4 @@
+'use strict';
 // USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 var common = require('../common');
@@ -7,7 +8,7 @@ var events = require('events');
 var EventEmitter = require('events').EventEmitter;
 var assert = require('assert');
 
-var e = new EventEmitter;
+var e = new EventEmitter();
 var fl;  // foo listeners
 
 fl = e.listeners('foo');
diff --git a/test/parallel/test-event-emitter-listeners.js b/test/parallel/test-event-emitter-listeners.js
index 6baad62968..be6b838562 100644
--- a/test/parallel/test-event-emitter-listeners.js
+++ b/test/parallel/test-event-emitter-listeners.js
@@ -1,3 +1,4 @@
+'use strict';
 // USE OR OTHER DEALINGS IN THE SOFTWARE.
 
 var common = require('../common');
diff --git a/test/parallel/test-event-emitter-max-listeners.js b/test/parallel/test-event-emitter-max-listeners.js
index cea5fbf022..5e754698d0 100644
--- a/test/parallel/test-event-emitter-max-listeners.js
+++ b/test/parallel/test-event-emitter-max-listeners.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var events = require('events');
@@ -26,7 +27,7 @@ assert.throws(function() {
 });
 
 assert.throws(function() {
-  e.setMaxListeners("and even this");
+  e.setMaxListeners('and even this');
 });
 
 e.emit('maxListeners');
diff --git a/test/parallel/test-event-emitter-method-names.js b/test/parallel/test-event-emitter-method-names.js
index 27061df4e4..a260aa7798 100644
--- a/test/parallel/test-event-emitter-method-names.js
+++ b/test/parallel/test-event-emitter-method-names.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var events = require('events');
diff --git a/test/parallel/test-event-emitter-modify-in-emit.js b/test/parallel/test-event-emitter-modify-in-emit.js
index 3b05a88a3e..85845cc444 100644
--- a/test/parallel/test-event-emitter-modify-in-emit.js
+++ b/test/parallel/test-event-emitter-modify-in-emit.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var events = require('events');
diff --git a/test/parallel/test-event-emitter-no-error-provided-to-error-event.js b/test/parallel/test-event-emitter-no-error-provided-to-error-event.js
index 5c50c32d48..e85361475f 100644
--- a/test/parallel/test-event-emitter-no-error-provided-to-error-event.js
+++ b/test/parallel/test-event-emitter-no-error-provided-to-error-event.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var events = require('events');
@@ -9,13 +10,13 @@ var e = new events.EventEmitter();
 
 var d = domain.create();
 d.add(e);
-d.on('error', function (er) {
+d.on('error', function(er) {
   assert(er instanceof Error, 'error created');
   errorCatched = true;
 });
 
 e.emit('error');
 
-process.on('exit', function () {
+process.on('exit', function() {
   assert(errorCatched, 'error got caught');
 });
diff --git a/test/parallel/test-event-emitter-num-args.js b/test/parallel/test-event-emitter-num-args.js
index 20c003f330..522fb2e217 100644
--- a/test/parallel/test-event-emitter-num-args.js
+++ b/test/parallel/test-event-emitter-num-args.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var events = require('events');
diff --git a/test/parallel/test-event-emitter-once.js b/test/parallel/test-event-emitter-once.js
index c5cd007ea2..1085e7942a 100644
--- a/test/parallel/test-event-emitter-once.js
+++ b/test/parallel/test-event-emitter-once.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var events = require('events');
@@ -29,12 +30,12 @@ process.on('exit', function() {
 var times_recurse_emitted = 0;
 
 e.once('e', function() {
-	e.emit('e');
-	times_recurse_emitted++;
+  e.emit('e');
+  times_recurse_emitted++;
 });
 
 e.once('e', function() {
-	times_recurse_emitted++;
+  times_recurse_emitted++;
 });
 
 e.emit('e');
diff --git a/test/parallel/test-event-emitter-remove-all-listeners.js b/test/parallel/test-event-emitter-remove-all-listeners.js
index 8c6d68ec5f..54dedfa136 100644
--- a/test/parallel/test-event-emitter-remove-all-listeners.js
+++ b/test/parallel/test-event-emitter-remove-all-listeners.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var events = require('events');
@@ -9,7 +10,7 @@ function expect(expected) {
     assert.deepEqual(actual.sort(), expected.sort());
   });
   function listener(name) {
-    actual.push(name)
+    actual.push(name);
   }
   return common.mustCall(listener, expected.length);
 }
@@ -63,9 +64,9 @@ var expectLength = 2;
 e4.on('removeListener', function(name, listener) {
   assert.equal(expectLength--, this.listeners('baz').length);
 });
-e4.on('baz', function(){});
-e4.on('baz', function(){});
-e4.on('baz', function(){});
-assert.equal(e4.listeners('baz').length, expectLength+1);
+e4.on('baz', function() {});
+e4.on('baz', function() {});
+e4.on('baz', function() {});
+assert.equal(e4.listeners('baz').length, expectLength + 1);
 e4.removeAllListeners('baz');
 assert.equal(e4.listeners('baz').length, 0);
diff --git a/test/parallel/test-event-emitter-remove-listeners.js b/test/parallel/test-event-emitter-remove-listeners.js
index 5d8acafc06..409ccbebe2 100644
--- a/test/parallel/test-event-emitter-remove-listeners.js
+++ b/test/parallel/test-event-emitter-remove-listeners.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var events = require('events');
diff --git a/test/parallel/test-event-emitter-set-max-listeners-side-effects.js b/test/parallel/test-event-emitter-set-max-listeners-side-effects.js
index d4842c395e..f09f130ab4 100644
--- a/test/parallel/test-event-emitter-set-max-listeners-side-effects.js
+++ b/test/parallel/test-event-emitter-set-max-listeners-side-effects.js
@@ -1,8 +1,9 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var events = require('events');
 
-var e = new events.EventEmitter;
+var e = new events.EventEmitter();
 
 assert.deepEqual(e._events, {});
 e.setMaxListeners(5);
diff --git a/test/parallel/test-event-emitter-subclass.js b/test/parallel/test-event-emitter-subclass.js
index d4be784812..3277382711 100644
--- a/test/parallel/test-event-emitter-subclass.js
+++ b/test/parallel/test-event-emitter-subclass.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var EventEmitter = require('events').EventEmitter;
@@ -43,6 +44,6 @@ MyEE2.prototype = new EventEmitter();
 var ee1 = new MyEE2();
 var ee2 = new MyEE2();
 
-ee1.on('x', function () {});
+ee1.on('x', function() {});
 
 assert.equal(EventEmitter.listenerCount(ee2, 'x'), 0);
diff --git a/test/parallel/test-exception-handler.js b/test/parallel/test-exception-handler.js
index 4a781a0a9c..9cc8106ea6 100644
--- a/test/parallel/test-exception-handler.js
+++ b/test/parallel/test-exception-handler.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-exception-handler2.js b/test/parallel/test-exception-handler2.js
index 77f3eb1d5c..58e84ad21b 100644
--- a/test/parallel/test-exception-handler2.js
+++ b/test/parallel/test-exception-handler2.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-exec-max-buffer.js b/test/parallel/test-exec-max-buffer.js
index a5a24eabea..5cae35b69f 100644
--- a/test/parallel/test-exec-max-buffer.js
+++ b/test/parallel/test-exec-max-buffer.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var exec = require('child_process').exec;
 var assert = require('assert');
diff --git a/test/parallel/test-file-read-noexist.js b/test/parallel/test-file-read-noexist.js
index ad8dd5dc66..47c8d256e3 100644
--- a/test/parallel/test-file-read-noexist.js
+++ b/test/parallel/test-file-read-noexist.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var path = require('path');
diff --git a/test/parallel/test-file-write-stream.js b/test/parallel/test-file-write-stream.js
index 9f0d66a84f..7882d2370d 100644
--- a/test/parallel/test-file-write-stream.js
+++ b/test/parallel/test-file-write-stream.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-file-write-stream2.js b/test/parallel/test-file-write-stream2.js
index 049d7d25e1..2563b1a300 100644
--- a/test/parallel/test-file-write-stream2.js
+++ b/test/parallel/test-file-write-stream2.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-file-write-stream3.js b/test/parallel/test-file-write-stream3.js
index 2acb705304..7223bd43f5 100644
--- a/test/parallel/test-file-write-stream3.js
+++ b/test/parallel/test-file-write-stream3.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-fs-access.js b/test/parallel/test-fs-access.js
index 1c9773867c..6ad28612e9 100644
--- a/test/parallel/test-fs-access.js
+++ b/test/parallel/test-fs-access.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var fs = require('fs');
@@ -20,8 +21,8 @@ var createFileWithPerms = function(file, mode) {
   fs.chmodSync(file, mode);
 };
 
-createFileWithPerms(readOnlyFile, 0444);
-createFileWithPerms(readWriteFile, 0666);
+createFileWithPerms(readOnlyFile, 0o444);
+createFileWithPerms(readWriteFile, 0o666);
 
 /*
  * On non-Windows supported platforms, fs.access(readOnlyFile, W_OK, ...)
@@ -112,7 +113,7 @@ assert.doesNotThrow(function() {
 
 assert.throws(function() {
   fs.accessSync(doesNotExist);
-}, function (err) {
+}, function(err) {
   return err.code === 'ENOENT' && err.path === doesNotExist;
 });
 
diff --git a/test/parallel/test-fs-append-file-sync.js b/test/parallel/test-fs-append-file-sync.js
index 72cfdf75e2..5a38014399 100644
--- a/test/parallel/test-fs-append-file-sync.js
+++ b/test/parallel/test-fs-append-file-sync.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var join = require('path').join;
@@ -55,13 +56,13 @@ var filename4 = join(common.tmpDir, 'append-sync4.txt');
 fs.writeFileSync(filename4, currentFileData, { mode: m });
 
 common.error('appending to ' + filename4);
-var m = 0600;
+var m = 0o600;
 fs.appendFileSync(filename4, num, { mode: m });
 
 // windows permissions aren't unix
 if (process.platform !== 'win32') {
   var st = fs.statSync(filename4);
-  assert.equal(st.mode & 0700, m);
+  assert.equal(st.mode & 0o700, m);
 }
 
 var fileData4 = fs.readFileSync(filename4);
diff --git a/test/parallel/test-fs-append-file.js b/test/parallel/test-fs-append-file.js
index ba2d34e5a1..4cd75ccacc 100644
--- a/test/parallel/test-fs-append-file.js
+++ b/test/parallel/test-fs-append-file.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var fs = require('fs');
@@ -80,7 +81,7 @@ fs.writeFileSync(filename4, currentFileData);
 
 common.error('appending to ' + filename4);
 
-var m = 0600;
+var m = 0o600;
 fs.appendFile(filename4, n, { mode: m }, function(e) {
   if (e) throw e;
 
@@ -90,7 +91,7 @@ fs.appendFile(filename4, n, { mode: m }, function(e) {
   // windows permissions aren't unix
   if (process.platform !== 'win32') {
     var st = fs.statSync(filename4);
-    assert.equal(st.mode & 0700, m);
+    assert.equal(st.mode & 0o700, m);
   }
 
   fs.readFile(filename4, function(e, buffer) {
diff --git a/test/parallel/test-fs-chmod.js b/test/parallel/test-fs-chmod.js
index 55056125da..a9d694adec 100644
--- a/test/parallel/test-fs-chmod.js
+++ b/test/parallel/test-fs-chmod.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var path = require('path');
@@ -44,11 +45,11 @@ function closeSync() {
 
 // On Windows chmod is only able to manipulate read-only bit
 if (is_windows) {
-  mode_async = 0400;   // read-only
-  mode_sync = 0600;    // read-write
+  mode_async = 0o400;   // read-only
+  mode_sync = 0o600;    // read-write
 } else {
-  mode_async = 0777;
-  mode_sync = 0644;
+  mode_async = 0o777;
+  mode_sync = 0o644;
 }
 
 var file1 = path.join(common.fixturesDir, 'a.js'),
@@ -61,16 +62,16 @@ fs.chmod(file1, mode_async.toString(8), function(err) {
     console.log(fs.statSync(file1).mode);
 
     if (is_windows) {
-      assert.ok((fs.statSync(file1).mode & 0777) & mode_async);
+      assert.ok((fs.statSync(file1).mode & 0o777) & mode_async);
     } else {
-      assert.equal(mode_async, fs.statSync(file1).mode & 0777);
+      assert.equal(mode_async, fs.statSync(file1).mode & 0o777);
     }
 
     fs.chmodSync(file1, mode_sync);
     if (is_windows) {
-      assert.ok((fs.statSync(file1).mode & 0777) & mode_sync);
+      assert.ok((fs.statSync(file1).mode & 0o777) & mode_sync);
     } else {
-      assert.equal(mode_sync, fs.statSync(file1).mode & 0777);
+      assert.equal(mode_sync, fs.statSync(file1).mode & 0o777);
     }
     success_count++;
   }
@@ -89,16 +90,16 @@ fs.open(file2, 'a', function(err, fd) {
       console.log(fs.fstatSync(fd).mode);
 
       if (is_windows) {
-        assert.ok((fs.fstatSync(fd).mode & 0777) & mode_async);
+        assert.ok((fs.fstatSync(fd).mode & 0o777) & mode_async);
       } else {
-        assert.equal(mode_async, fs.fstatSync(fd).mode & 0777);
+        assert.equal(mode_async, fs.fstatSync(fd).mode & 0o777);
       }
 
       fs.fchmodSync(fd, mode_sync);
       if (is_windows) {
-        assert.ok((fs.fstatSync(fd).mode & 0777) & mode_sync);
+        assert.ok((fs.fstatSync(fd).mode & 0o777) & mode_sync);
       } else {
-        assert.equal(mode_sync, fs.fstatSync(fd).mode & 0777);
+        assert.equal(mode_sync, fs.fstatSync(fd).mode & 0o777);
       }
       success_count++;
       fs.close(fd);
@@ -120,10 +121,10 @@ if (fs.lchmod) {
       got_error = true;
     } else {
       console.log(fs.lstatSync(link).mode);
-      assert.equal(mode_async, fs.lstatSync(link).mode & 0777);
+      assert.equal(mode_async, fs.lstatSync(link).mode & 0o777);
 
       fs.lchmodSync(link, mode_sync);
-      assert.equal(mode_sync, fs.lstatSync(link).mode & 0777);
+      assert.equal(mode_sync, fs.lstatSync(link).mode & 0o777);
       success_count++;
     }
   });
diff --git a/test/parallel/test-fs-empty-readStream.js b/test/parallel/test-fs-empty-readStream.js
index 0c470076da..0863e0cdba 100644
--- a/test/parallel/test-fs-empty-readStream.js
+++ b/test/parallel/test-fs-empty-readStream.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var path = require('path');
@@ -5,43 +6,43 @@ var fs = require('fs');
 
 var emptyFile = path.join(common.fixturesDir, 'empty.txt');
 
-fs.open(emptyFile, 'r', function (error, fd) {
+fs.open(emptyFile, 'r', function(error, fd) {
   assert.ifError(error);
 
   var read = fs.createReadStream(emptyFile, { 'fd': fd });
 
-  read.once('data', function () {
+  read.once('data', function() {
     throw new Error('data event should not emit');
   });
 
   var readEmit = false;
-  read.once('end', function () {
+  read.once('end', function() {
     readEmit = true;
     console.error('end event 1');
   });
 
-  setTimeout(function () {
+  setTimeout(function() {
     assert.equal(readEmit, true);
   }, common.platformTimeout(50));
 });
 
-fs.open(emptyFile, 'r', function (error, fd) {
+fs.open(emptyFile, 'r', function(error, fd) {
   assert.ifError(error);
 
   var read = fs.createReadStream(emptyFile, { 'fd': fd });
   read.pause();
 
-  read.once('data', function () {
+  read.once('data', function() {
     throw new Error('data event should not emit');
   });
 
   var readEmit = false;
-  read.once('end', function () {
+  read.once('end', function() {
     readEmit = true;
     console.error('end event 2');
   });
 
-  setTimeout(function () {
+  setTimeout(function() {
     assert.equal(readEmit, false);
   }, common.platformTimeout(50));
 });
diff --git a/test/parallel/test-fs-error-messages.js b/test/parallel/test-fs-error-messages.js
index e174e1c023..ca0684c1d7 100644
--- a/test/parallel/test-fs-error-messages.js
+++ b/test/parallel/test-fs-error-messages.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
@@ -55,7 +56,7 @@ fs.rmdir(fn, function(err) {
   assert.ok(0 <= err.message.indexOf(fn));
 });
 
-fs.mkdir(existingFile, 0666, function(err) {
+fs.mkdir(existingFile, 0o666, function(err) {
   assert.ok(0 <= err.message.indexOf(existingFile));
 });
 
@@ -63,11 +64,11 @@ fs.rmdir(existingFile, function(err) {
   assert.ok(0 <= err.message.indexOf(existingFile));
 });
 
-fs.chmod(fn, 0666, function(err) {
+fs.chmod(fn, 0o666, function(err) {
   assert.ok(0 <= err.message.indexOf(fn));
 });
 
-fs.open(fn, 'r', 0666, function(err) {
+fs.open(fn, 'r', 0o666, function(err) {
   assert.ok(0 <= err.message.indexOf(fn));
 });
 
@@ -90,7 +91,7 @@ try {
 
 try {
   ++expected;
-  fs.mkdirSync(existingFile, 0666);
+  fs.mkdirSync(existingFile, 0o666);
 } catch (err) {
   errors.push('mkdir');
   assert.ok(0 <= err.message.indexOf(existingFile));
@@ -98,7 +99,7 @@ try {
 
 try {
   ++expected;
-  fs.chmodSync(fn, 0666);
+  fs.chmodSync(fn, 0o666);
 } catch (err) {
   errors.push('chmod');
   assert.ok(0 <= err.message.indexOf(fn));
diff --git a/test/parallel/test-fs-exists.js b/test/parallel/test-fs-exists.js
index 4eb14e1e3b..fcbd729a5e 100644
--- a/test/parallel/test-fs-exists.js
+++ b/test/parallel/test-fs-exists.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var fs = require('fs');
diff --git a/test/parallel/test-fs-fsync.js b/test/parallel/test-fs-fsync.js
index 50c010a49a..661a73baef 100644
--- a/test/parallel/test-fs-fsync.js
+++ b/test/parallel/test-fs-fsync.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
@@ -9,7 +10,7 @@ var file = path.join(common.fixturesDir, 'a.js');
 
 common.error('open ' + file);
 
-fs.open(file, 'a', 0777, function(err, fd) {
+fs.open(file, 'a', 0o777, function(err, fd) {
   common.error('fd ' + fd);
   if (err) throw err;
 
diff --git a/test/parallel/test-fs-long-path.js b/test/parallel/test-fs-long-path.js
index ae8a5669f8..158ba04f49 100644
--- a/test/parallel/test-fs-long-path.js
+++ b/test/parallel/test-fs-long-path.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var fs = require('fs');
 var path = require('path');
diff --git a/test/parallel/test-fs-make-callback.js b/test/parallel/test-fs-make-callback.js
index 91990015b8..a15a16404d 100644
--- a/test/parallel/test-fs-make-callback.js
+++ b/test/parallel/test-fs-make-callback.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var fs = require('fs');
diff --git a/test/parallel/test-fs-mkdir.js b/test/parallel/test-fs-mkdir.js
index b8a688adc4..b5451d2057 100644
--- a/test/parallel/test-fs-mkdir.js
+++ b/test/parallel/test-fs-mkdir.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var fs = require('fs');
diff --git a/test/parallel/test-fs-null-bytes.js b/test/parallel/test-fs-null-bytes.js
index 4d1dcb3972..77228521e6 100644
--- a/test/parallel/test-fs-null-bytes.js
+++ b/test/parallel/test-fs-null-bytes.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var fs = require('fs');
diff --git a/test/parallel/test-fs-open-flags.js b/test/parallel/test-fs-open-flags.js
index bf4619d19d..c7d53117d5 100644
--- a/test/parallel/test-fs-open-flags.js
+++ b/test/parallel/test-fs-open-flags.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-fs-open.js b/test/parallel/test-fs-open.js
index ea099d2e14..59b605841b 100644
--- a/test/parallel/test-fs-open.js
+++ b/test/parallel/test-fs-open.js
@@ -1,3 +1,4 @@
+'use strict';
 var constants = require('constants');
 var common = require('../common');
 var assert = require('assert');
diff --git a/test/parallel/test-fs-read-buffer.js b/test/parallel/test-fs-read-buffer.js
index 0dc7a851da..57a28d477c 100644
--- a/test/parallel/test-fs-read-buffer.js
+++ b/test/parallel/test-fs-read-buffer.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var path = require('path'),
diff --git a/test/parallel/test-fs-read-file-sync-hostname.js b/test/parallel/test-fs-read-file-sync-hostname.js
index a2c8ac5da7..c5c5264c0d 100644
--- a/test/parallel/test-fs-read-file-sync-hostname.js
+++ b/test/parallel/test-fs-read-file-sync-hostname.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var fs = require('fs');
diff --git a/test/parallel/test-fs-read-file-sync.js b/test/parallel/test-fs-read-file-sync.js
index cf6ab72dbf..d34bf7748c 100644
--- a/test/parallel/test-fs-read-file-sync.js
+++ b/test/parallel/test-fs-read-file-sync.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var path = require('path');
diff --git a/test/parallel/test-fs-read-stream-err.js b/test/parallel/test-fs-read-stream-err.js
index a3d1457e61..1eb6aa5790 100644
--- a/test/parallel/test-fs-read-stream-err.js
+++ b/test/parallel/test-fs-read-stream-err.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var fs = require('fs');
diff --git a/test/parallel/test-fs-read-stream-fd-leak.js b/test/parallel/test-fs-read-stream-fd-leak.js
index abd954506b..ddbccda1b8 100644
--- a/test/parallel/test-fs-read-stream-fd-leak.js
+++ b/test/parallel/test-fs-read-stream-fd-leak.js
@@ -1,3 +1,4 @@
+'use strict';
 // Copyright io.js contributors.
 //
 // Permission is hereby granted, free of charge, to any person obtaining a
@@ -34,12 +35,12 @@ var emptyTxt = path.join(common.fixturesDir, 'empty.txt');
 fs.open = function() {
   openCount++;
   return _fsopen.apply(null, arguments);
-}
+};
 
 fs.close = function() {
   openCount--;
   return _fsclose.apply(null, arguments);
-}
+};
 
 function testLeak(endFn, callback) {
   console.log('testing for leaks from fs.createReadStream().%s()...', endFn);
@@ -53,7 +54,8 @@ function testLeak(endFn, callback) {
     if (++i === loopCount) {
       clearTimeout(this);
       setTimeout(function() {
-        assert.equal(0, openCount, 'no leaked file descriptors using ' + endFn + '() (got ' + openCount + ')');
+        assert.equal(0, openCount, 'no leaked file descriptors using ' +
+                     endFn + '() (got ' + openCount + ')');
         openCount = 0;
         callback && setTimeout(callback, 100);
       }, 100);
diff --git a/test/parallel/test-fs-read-stream-fd.js b/test/parallel/test-fs-read-stream-fd.js
index f57499ca39..450c56eb8a 100644
--- a/test/parallel/test-fs-read-stream-fd.js
+++ b/test/parallel/test-fs-read-stream-fd.js
@@ -1,3 +1,4 @@
+'use strict';
 var fs = require('fs');
 var assert = require('assert');
 var path = require('path');
diff --git a/test/parallel/test-fs-read-stream-inherit.js b/test/parallel/test-fs-read-stream-inherit.js
index c8da148e04..3b53578397 100644
--- a/test/parallel/test-fs-read-stream-inherit.js
+++ b/test/parallel/test-fs-read-stream-inherit.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
@@ -80,7 +81,8 @@ process.on('exit', function() {
   console.error('ok');
 });
 
-var file4 = fs.createReadStream(rangeFile, Object.create({bufferSize: 1, start: 1, end: 2}));
+var file4 = fs.createReadStream(rangeFile, Object.create({bufferSize: 1,
+                                start: 1, end: 2}));
 assert.equal(file4.start, 1);
 assert.equal(file4.end, 2);
 var contentRead = '';
@@ -91,7 +93,8 @@ file4.on('end', function(data) {
   assert.equal(contentRead, 'yz');
 });
 
-var file5 = fs.createReadStream(rangeFile, Object.create({bufferSize: 1, start: 1}));
+var file5 = fs.createReadStream(rangeFile, Object.create({bufferSize: 1,
+                                start: 1}));
 assert.equal(file5.start, 1);
 file5.data = '';
 file5.on('data', function(data) {
@@ -102,7 +105,8 @@ file5.on('end', function() {
 });
 
 // https://github.com/joyent/node/issues/2320
-var file6 = fs.createReadStream(rangeFile, Object.create({bufferSize: 1.23, start: 1}));
+var file6 = fs.createReadStream(rangeFile, Object.create({bufferSize: 1.23,
+                                start: 1}));
 assert.equal(file6.start, 1);
 file6.data = '';
 file6.on('data', function(data) {
@@ -116,7 +120,8 @@ assert.throws(function() {
   fs.createReadStream(rangeFile, Object.create({start: 10, end: 2}));
 }, /start must be <= end/);
 
-var stream = fs.createReadStream(rangeFile, Object.create({ start: 0, end: 0 }));
+var stream = fs.createReadStream(rangeFile, Object.create({ start: 0,
+                                 end: 0 }));
 assert.equal(stream.start, 0);
 assert.equal(stream.end, 0);
 stream.data = '';
@@ -145,7 +150,7 @@ file7.on('end', function() {
   });
 });
 
-function file7Next(){
+function file7Next() {
   // This will tell us if the fd is usable again or not.
   file7 = fs.createReadStream(null, Object.create({fd: file7.fd, start: 0 }));
   file7.data = '';
@@ -158,7 +163,8 @@ function file7Next(){
 }
 
 // Just to make sure autoClose won't close the stream because of error.
-var file8 = fs.createReadStream(null, Object.create({fd: 13337, autoClose: false }));
+var file8 = fs.createReadStream(null, Object.create({fd: 13337,
+                                autoClose: false }));
 file8.on('data', function() {});
 file8.on('error', common.mustCall(function() {}));
 
diff --git a/test/parallel/test-fs-read-stream-resume.js b/test/parallel/test-fs-read-stream-resume.js
index c3c61c88cb..9a2e2ee76f 100644
--- a/test/parallel/test-fs-read-stream-resume.js
+++ b/test/parallel/test-fs-read-stream-resume.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-fs-read-stream.js b/test/parallel/test-fs-read-stream.js
index 85032d4964..490ae0866d 100644
--- a/test/parallel/test-fs-read-stream.js
+++ b/test/parallel/test-fs-read-stream.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
@@ -138,7 +139,7 @@ file7.on('end', function() {
   });
 });
 
-function file7Next(){
+function file7Next() {
   // This will tell us if the fd is usable again or not.
   file7 = fs.createReadStream(null, {fd: file7.fd, start: 0 });
   file7.data = '';
diff --git a/test/parallel/test-fs-read.js b/test/parallel/test-fs-read.js
index 3182733d11..8b0b6fe0a3 100644
--- a/test/parallel/test-fs-read.js
+++ b/test/parallel/test-fs-read.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var path = require('path'),
diff --git a/test/parallel/test-fs-readfile-empty.js b/test/parallel/test-fs-readfile-empty.js
index bf7da45fca..2669ce1ad6 100644
--- a/test/parallel/test-fs-readfile-empty.js
+++ b/test/parallel/test-fs-readfile-empty.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-fs-readfile-error.js b/test/parallel/test-fs-readfile-error.js
index bfe79ab80e..6d86ba1a7e 100644
--- a/test/parallel/test-fs-readfile-error.js
+++ b/test/parallel/test-fs-readfile-error.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var exec = require('child_process').exec;
diff --git a/test/parallel/test-fs-readfile-pipe-large.js b/test/parallel/test-fs-readfile-pipe-large.js
index 3502cdd5f4..b250730610 100644
--- a/test/parallel/test-fs-readfile-pipe-large.js
+++ b/test/parallel/test-fs-readfile-pipe-large.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var path = require('path');
diff --git a/test/parallel/test-fs-readfile-pipe.js b/test/parallel/test-fs-readfile-pipe.js
index da0cd2952f..b55bfb6a22 100644
--- a/test/parallel/test-fs-readfile-pipe.js
+++ b/test/parallel/test-fs-readfile-pipe.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-fs-readfile-unlink.js b/test/parallel/test-fs-readfile-unlink.js
index bdcf23380e..15491b71c4 100644
--- a/test/parallel/test-fs-readfile-unlink.js
+++ b/test/parallel/test-fs-readfile-unlink.js
@@ -1,3 +1,4 @@
+'use strict';
 var assert = require('assert'),
     common = require('../common'),
     fs = require('fs'),
diff --git a/test/parallel/test-fs-readfile-zero-byte-liar.js b/test/parallel/test-fs-readfile-zero-byte-liar.js
index 532459305c..2c9c6e3db9 100644
--- a/test/parallel/test-fs-readfile-zero-byte-liar.js
+++ b/test/parallel/test-fs-readfile-zero-byte-liar.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var fs = require('fs');
@@ -26,12 +27,12 @@ var d = fs.readFileSync(__filename, 'utf8');
 assert.equal(d, dataExpected);
 
 var called = false;
-fs.readFile(__filename, 'utf8', function (er, d) {
+fs.readFile(__filename, 'utf8', function(er, d) {
   assert.equal(d, dataExpected);
   called = true;
 });
 
 process.on('exit', function() {
   assert(called);
-  console.log("ok");
+  console.log('ok');
 });
diff --git a/test/parallel/test-fs-readfilesync-pipe-large.js b/test/parallel/test-fs-readfilesync-pipe-large.js
index e62d541a68..78dbc31bea 100644
--- a/test/parallel/test-fs-readfilesync-pipe-large.js
+++ b/test/parallel/test-fs-readfilesync-pipe-large.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var path = require('path');
diff --git a/test/parallel/test-fs-realpath.js b/test/parallel/test-fs-realpath.js
index f8299d8d05..f0f6d4499c 100644
--- a/test/parallel/test-fs-realpath.js
+++ b/test/parallel/test-fs-realpath.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var fs = require('fs');
@@ -38,7 +39,7 @@ function tmp(p) {
 var fixturesAbsDir = common.fixturesDir;
 var tmpAbsDir = common.tmpDir;
 
-console.error("absolutes\n%s\n%s", fixturesAbsDir, tmpAbsDir);
+console.error('absolutes\n%s\n%s', fixturesAbsDir, tmpAbsDir);
 
 function asynctest(testBlock, args, callback, assertBlock) {
   async_expected++;
@@ -235,7 +236,7 @@ function test_cyclic_link_overprotection(callback) {
   var link = folder + '/cycles';
   var testPath = cycles;
   for (var i = 0; i < 10; i++) testPath += '/folder/cycles';
-  try {fs.unlinkSync(link)} catch (ex) {}
+  try {fs.unlinkSync(link);} catch (ex) {}
   fs.symlinkSync(cycles, link, 'dir');
   unlink.push(link);
   assert.equal(fs.realpathSync(testPath), path.resolve(expected));
@@ -311,7 +312,7 @@ function test_deep_symlink_mix(callback) {
   var entry = tmp('node-test-realpath-f1');
   try { fs.unlinkSync(tmp('node-test-realpath-d2/foo')); } catch (e) {}
   try { fs.rmdirSync(tmp('node-test-realpath-d2')); } catch (e) {}
-  fs.mkdirSync(tmp('node-test-realpath-d2'), 0700);
+  fs.mkdirSync(tmp('node-test-realpath-d2'), 0o700);
   try {
     [
       [entry, '../' + common.tmpDirName + '/node-test-realpath-d1/foo'],
@@ -369,12 +370,14 @@ function test_escape_cwd(cb) {
   console.log('test_escape_cwd');
   asynctest(fs.realpath, ['..'], cb, function(er, uponeActual) {
     assert.equal(upone, uponeActual,
-        'realpath("..") expected: ' + path.resolve(upone) + ' actual:' + uponeActual);
+        'realpath("..") expected: ' + path.resolve(upone) +
+        ' actual:' + uponeActual);
   });
 }
 var uponeActual = fs.realpathSync('..');
 assert.equal(upone, uponeActual,
-    'realpathSync("..") expected: ' + path.resolve(upone) + ' actual:' + uponeActual);
+    'realpathSync("..") expected: ' + path.resolve(upone) +
+    ' actual:' + uponeActual);
 
 
 // going up with .. multiple times
@@ -394,15 +397,15 @@ function test_up_multiple(cb) {
     ['a/b',
       'a'
     ].forEach(function(folder) {
-      try {fs.rmdirSync(tmp(folder))} catch (ex) {}
+      try {fs.rmdirSync(tmp(folder));} catch (ex) {}
     });
   }
   function setup() {
     cleanup();
   }
   setup();
-  fs.mkdirSync(tmp('a'), 0755);
-  fs.mkdirSync(tmp('a/b'), 0755);
+  fs.mkdirSync(tmp('a'), 0o755);
+  fs.mkdirSync(tmp('a/b'), 0o755);
   fs.symlinkSync('..', tmp('a/d'), 'dir');
   unlink.push(tmp('a/d'));
   fs.symlinkSync('..', tmp('a/b/e'), 'dir');
@@ -416,10 +419,10 @@ function test_up_multiple(cb) {
 
   assert.equal(fs.realpathSync(abedabeda), abedabeda_real);
   assert.equal(fs.realpathSync(abedabed), abedabed_real);
-  fs.realpath(abedabeda, function (er, real) {
+  fs.realpath(abedabeda, function(er, real) {
     if (er) throw er;
     assert.equal(abedabeda_real, real);
-    fs.realpath(abedabed, function (er, real) {
+    fs.realpath(abedabed, function(er, real) {
       if (er) throw er;
       assert.equal(abedabed_real, real);
       cb();
@@ -451,14 +454,14 @@ function test_abs_with_kids(cb) {
     ['/a/b/c/x.txt',
       '/a/link'
     ].forEach(function(file) {
-      try {fs.unlinkSync(root + file)} catch (ex) {}
+      try {fs.unlinkSync(root + file);} catch (ex) {}
     });
     ['/a/b/c',
       '/a/b',
       '/a',
       ''
     ].forEach(function(folder) {
-      try {fs.rmdirSync(root + folder)} catch (ex) {}
+      try {fs.rmdirSync(root + folder);} catch (ex) {}
     });
   }
   function setup() {
@@ -469,7 +472,7 @@ function test_abs_with_kids(cb) {
       '/a/b/c'
     ].forEach(function(folder) {
       console.log('mkdir ' + root + folder);
-      fs.mkdirSync(root + folder, 0700);
+      fs.mkdirSync(root + folder, 0o700);
     });
     fs.writeFileSync(root + '/a/b/c/x.txt', 'foo');
     fs.symlinkSync(root + '/a/b', root + '/a/link', type);
@@ -575,7 +578,7 @@ function runTest() {
     var s;
     try { s = fs.statSync(t); } catch (ex) {}
     if (s) return;
-    fs.mkdirSync(t, 0700);
+    fs.mkdirSync(t, 0o700);
   });
   fs.writeFileSync(tmp('cycles/root.js'), "console.error('roooot!');");
   console.error('start tests');
diff --git a/test/parallel/test-fs-sir-writes-alot.js b/test/parallel/test-fs-sir-writes-alot.js
index 9df95a77bd..537e94b0ac 100644
--- a/test/parallel/test-fs-sir-writes-alot.js
+++ b/test/parallel/test-fs-sir-writes-alot.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var fs = require('fs');
 var assert = require('assert');
diff --git a/test/parallel/test-fs-stat.js b/test/parallel/test-fs-stat.js
index 88a965974d..123d6608b4 100644
--- a/test/parallel/test-fs-stat.js
+++ b/test/parallel/test-fs-stat.js
@@ -1,3 +1,4 @@
+/* eslint-disable strict */
 var common = require('../common');
 var assert = require('assert');
 var fs = require('fs');
diff --git a/test/parallel/test-fs-stream-double-close.js b/test/parallel/test-fs-stream-double-close.js
index 5d772da4aa..47d129c042 100644
--- a/test/parallel/test-fs-stream-double-close.js
+++ b/test/parallel/test-fs-stream-double-close.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var fs = require('fs');
diff --git a/test/parallel/test-fs-symlink-dir-junction-relative.js b/test/parallel/test-fs-symlink-dir-junction-relative.js
index 5e4ce38b91..6bf9e3f5b2 100644
--- a/test/parallel/test-fs-symlink-dir-junction-relative.js
+++ b/test/parallel/test-fs-symlink-dir-junction-relative.js
@@ -1,3 +1,4 @@
+'use strict';
 // Test creating and resolving relative junction or symbolic link
 
 var common = require('../common');
diff --git a/test/parallel/test-fs-symlink-dir-junction.js b/test/parallel/test-fs-symlink-dir-junction.js
index 27d3e5103d..84d6c06621 100644
--- a/test/parallel/test-fs-symlink-dir-junction.js
+++ b/test/parallel/test-fs-symlink-dir-junction.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var path = require('path');
diff --git a/test/parallel/test-fs-symlink.js b/test/parallel/test-fs-symlink.js
index 533f22672d..e7faef930e 100644
--- a/test/parallel/test-fs-symlink.js
+++ b/test/parallel/test-fs-symlink.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var path = require('path');
diff --git a/test/parallel/test-fs-sync-fd-leak.js b/test/parallel/test-fs-sync-fd-leak.js
index ab851b1a16..5f2b63125a 100644
--- a/test/parallel/test-fs-sync-fd-leak.js
+++ b/test/parallel/test-fs-sync-fd-leak.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var fs = require('fs');
diff --git a/test/parallel/test-fs-truncate-GH-6233.js b/test/parallel/test-fs-truncate-GH-6233.js
index 72dfa13691..866315434a 100644
--- a/test/parallel/test-fs-truncate-GH-6233.js
+++ b/test/parallel/test-fs-truncate-GH-6233.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var fs = require('fs');
diff --git a/test/parallel/test-fs-truncate-fd.js b/test/parallel/test-fs-truncate-fd.js
index 6e9628db86..ed3aedaee8 100644
--- a/test/parallel/test-fs-truncate-fd.js
+++ b/test/parallel/test-fs-truncate-fd.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var path = require('path');
diff --git a/test/parallel/test-fs-truncate.js b/test/parallel/test-fs-truncate.js
index 7f1dcd0661..df353f630e 100644
--- a/test/parallel/test-fs-truncate.js
+++ b/test/parallel/test-fs-truncate.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var path = require('path');
diff --git a/test/parallel/test-fs-utimes.js b/test/parallel/test-fs-utimes.js
index e877b3dfdc..863d66d89e 100644
--- a/test/parallel/test-fs-utimes.js
+++ b/test/parallel/test-fs-utimes.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var util = require('util');
diff --git a/test/parallel/test-fs-write-buffer.js b/test/parallel/test-fs-write-buffer.js
index 7dfcc6cd35..edf33552cb 100644
--- a/test/parallel/test-fs-write-buffer.js
+++ b/test/parallel/test-fs-write-buffer.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var path = require('path'),
@@ -9,7 +10,7 @@ var path = require('path'),
     writeCalled = 0;
 
 
-fs.open(filename, 'w', 0644, function(err, fd) {
+fs.open(filename, 'w', 0o644, function(err, fd) {
   openCalled++;
   if (err) throw err;
 
diff --git a/test/parallel/test-fs-write-file-buffer.js b/test/parallel/test-fs-write-file-buffer.js
index bdddba9524..c1c263d409 100644
--- a/test/parallel/test-fs-write-file-buffer.js
+++ b/test/parallel/test-fs-write-file-buffer.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var join = require('path').join;
 var util = require('util');
diff --git a/test/parallel/test-fs-write-file-sync.js b/test/parallel/test-fs-write-file-sync.js
index 343d179f2a..579ccd907c 100644
--- a/test/parallel/test-fs-write-file-sync.js
+++ b/test/parallel/test-fs-write-file-sync.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var path = require('path');
@@ -15,14 +16,14 @@ fs._closeSync = fs.closeSync;
 fs.closeSync = closeSync;
 
 // Reset the umask for testing
-var mask = process.umask(0000);
+var mask = process.umask(0o000);
 
 // On Windows chmod is only able to manipulate read-only bit. Test if creating
 // the file in read-only mode works.
 if (isWindows) {
-  mode = 0444;
+  mode = 0o444;
 } else {
-  mode = 0755;
+  mode = 0o755;
 }
 
 // Test writeFileSync
@@ -34,7 +35,7 @@ fs.writeFileSync(file1, '123', {mode: mode});
 content = fs.readFileSync(file1, {encoding: 'utf8'});
 assert.equal('123', content);
 
-assert.equal(mode, fs.statSync(file1).mode & 0777);
+assert.equal(mode, fs.statSync(file1).mode & 0o777);
 
 removeFile(file1);
 
@@ -58,7 +59,7 @@ assert.equal(0, openCount);
 function removeFile(file) {
   try {
     if (isWindows)
-      fs.chmodSync(file, 0666);
+      fs.chmodSync(file, 0o666);
     fs.unlinkSync(file);
   } catch (err) {
     if (err && err.code !== 'ENOENT')
diff --git a/test/parallel/test-fs-write-file.js b/test/parallel/test-fs-write-file.js
index 4f43197fd6..b0c52f7a0e 100644
--- a/test/parallel/test-fs-write-file.js
+++ b/test/parallel/test-fs-write-file.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var fs = require('fs');
@@ -55,14 +56,14 @@ fs.writeFile(filename2, buf, function(e) {
 var filename3 = join(common.tmpDir, 'test3.txt');
 common.error('writing to ' + filename3);
 
-var m = 0600;
+var m = 0o600;
 fs.writeFile(filename3, n, { mode: m }, function(e) {
   if (e) throw e;
 
   // windows permissions aren't unix
   if (process.platform !== 'win32') {
     var st = fs.statSync(filename3);
-    assert.equal(st.mode & 0700, m);
+    assert.equal(st.mode & 0o700, m);
   }
 
   ncallbacks++;
diff --git a/test/parallel/test-fs-write-no-fd.js b/test/parallel/test-fs-write-no-fd.js
index 143928e783..5b38ce6ba8 100644
--- a/test/parallel/test-fs-write-no-fd.js
+++ b/test/parallel/test-fs-write-no-fd.js
@@ -1,3 +1,4 @@
+'use strict';
 const common = require('../common');
 const fs = require('fs');
 const assert = require('assert');
diff --git a/test/parallel/test-fs-write-stream-change-open.js b/test/parallel/test-fs-write-stream-change-open.js
index ca02e3959c..43b57f5c72 100644
--- a/test/parallel/test-fs-write-stream-change-open.js
+++ b/test/parallel/test-fs-write-stream-change-open.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
@@ -21,7 +22,7 @@ fs.close = function(fd) {
   assert.ok(fd, 'fs.close must not be called with an undefined fd.');
   fs.close = _fs_close;
   fs.open = _fs_open;
-}
+};
 
 stream.write('foo');
 stream.end();
diff --git a/test/parallel/test-fs-write-stream-end.js b/test/parallel/test-fs-write-stream-end.js
index 886df63660..1a4c0a89d6 100644
--- a/test/parallel/test-fs-write-stream-end.js
+++ b/test/parallel/test-fs-write-stream-end.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var path = require('path');
diff --git a/test/parallel/test-fs-write-stream-err.js b/test/parallel/test-fs-write-stream-err.js
index 61d6df5d5f..f3a608b62d 100644
--- a/test/parallel/test-fs-write-stream-err.js
+++ b/test/parallel/test-fs-write-stream-err.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var fs = require('fs');
diff --git a/test/parallel/test-fs-write-stream.js b/test/parallel/test-fs-write-stream.js
index ef7822af48..bf78b1ee52 100644
--- a/test/parallel/test-fs-write-stream.js
+++ b/test/parallel/test-fs-write-stream.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
@@ -13,7 +14,7 @@ var file = path.join(common.tmpDir, 'write.txt');
   fs.close = function(fd) {
     assert.ok(fd, 'fs.close must not be called without an undefined fd.');
     fs.close = _fs_close;
-  }
+  };
   stream.destroy();
 })();
 
diff --git a/test/parallel/test-fs-write-string-coerce.js b/test/parallel/test-fs-write-string-coerce.js
index 1320acca2c..32f73172b7 100644
--- a/test/parallel/test-fs-write-string-coerce.js
+++ b/test/parallel/test-fs-write-string-coerce.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var path = require('path');
@@ -8,7 +9,7 @@ var data = true;
 var expected = data + '';
 var found;
 
-fs.open(fn, 'w', 0644, function(err, fd) {
+fs.open(fn, 'w', 0o644, function(err, fd) {
   if (err) throw err;
   console.log('open done');
   fs.write(fd, data, 0, 'utf8', function(err, written) {
diff --git a/test/parallel/test-fs-write-sync.js b/test/parallel/test-fs-write-sync.js
index 59e2f90f92..2cdce58d87 100644
--- a/test/parallel/test-fs-write-sync.js
+++ b/test/parallel/test-fs-write-sync.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var path = require('path');
diff --git a/test/parallel/test-fs-write.js b/test/parallel/test-fs-write.js
index 49b4ec5316..a3d4cf83f8 100644
--- a/test/parallel/test-fs-write.js
+++ b/test/parallel/test-fs-write.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var path = require('path');
@@ -9,7 +10,7 @@ var expected = 'ümlaut.';
 var constants = require('constants');
 var found, found2;
 
-fs.open(fn, 'w', 0644, function(err, fd) {
+fs.open(fn, 'w', 0o644, function(err, fd) {
   if (err) throw err;
   console.log('open done');
   fs.write(fd, '', 0, 'utf8', function(err, written) {
@@ -28,7 +29,7 @@ fs.open(fn, 'w', 0644, function(err, fd) {
 });
 
 
-fs.open(fn2, constants.O_CREAT | constants.O_WRONLY | constants.O_TRUNC, 0644,
+fs.open(fn2, constants.O_CREAT | constants.O_WRONLY | constants.O_TRUNC, 0o644,
     function(err, fd) {
       if (err) throw err;
       console.log('open done');
diff --git a/test/parallel/test-global.js b/test/parallel/test-global.js
index a1ddc72f62..82d8ee054c 100644
--- a/test/parallel/test-global.js
+++ b/test/parallel/test-global.js
@@ -1,3 +1,4 @@
+/* eslint-disable strict */
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-handle-wrap-close-abort.js b/test/parallel/test-handle-wrap-close-abort.js
index c1179f72a1..8e2388fa84 100644
--- a/test/parallel/test-handle-wrap-close-abort.js
+++ b/test/parallel/test-handle-wrap-close-abort.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 
 process.on('uncaughtException', function() { });
diff --git a/test/parallel/test-http-1.0-keep-alive.js b/test/parallel/test-http-1.0-keep-alive.js
index b67b48969c..eac0fe51e2 100644
--- a/test/parallel/test-http-1.0-keep-alive.js
+++ b/test/parallel/test-http-1.0-keep-alive.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
@@ -96,7 +97,7 @@ function check(tests) {
     var ctx = test.responses[current];
     console.error('<  SERVER SENDING RESPONSE', ctx);
     res.writeHead(200, ctx.headers);
-    ctx.chunks.slice(0, -1).forEach(function(chunk) { res.write(chunk) });
+    ctx.chunks.slice(0, -1).forEach(function(chunk) { res.write(chunk); });
     res.end(ctx.chunks[ctx.chunks.length - 1]);
   }
 
diff --git a/test/parallel/test-http-1.0.js b/test/parallel/test-http-1.0.js
index f1408d2f53..bf55c616d9 100644
--- a/test/parallel/test-http-1.0.js
+++ b/test/parallel/test-http-1.0.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var net = require('net');
diff --git a/test/parallel/test-http-304.js b/test/parallel/test-http-304.js
index a2cc95e57d..e206f5bb70 100644
--- a/test/parallel/test-http-304.js
+++ b/test/parallel/test-http-304.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-http-abort-before-end.js b/test/parallel/test-http-abort-before-end.js
index 351ec86c2b..c0cee3886f 100644
--- a/test/parallel/test-http-abort-before-end.js
+++ b/test/parallel/test-http-abort-before-end.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var http = require('http');
 var assert = require('assert');
diff --git a/test/parallel/test-http-abort-client.js b/test/parallel/test-http-abort-client.js
index 40cf64c2cb..e24ded11d1 100644
--- a/test/parallel/test-http-abort-client.js
+++ b/test/parallel/test-http-abort-client.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var http = require('http');
 var assert = require('assert');
@@ -38,7 +39,7 @@ server.listen(common.PORT, function() {
 
     res.socket.on('close', function() {
       console.log('socket closed, but not res');
-    })
+    });
 
     // it would be nice if this worked:
     res.on('close', function() {
diff --git a/test/parallel/test-http-abort-queued.js b/test/parallel/test-http-abort-queued.js
index 1ef24acd50..f2b0120366 100644
--- a/test/parallel/test-http-abort-queued.js
+++ b/test/parallel/test-http-abort-queued.js
@@ -1,10 +1,11 @@
+'use strict';
 var assert = require('assert'),
     common = require('../common'),
     http = require('http');
 
 var complete;
 
-var server = http.createServer(function (req, res) {
+var server = http.createServer(function(req, res) {
   // We should not see the queued /thatotherone request within the server
   // as it should be aborted before it is sent.
   assert.equal(req.url, '/');
@@ -12,13 +13,13 @@ var server = http.createServer(function (req, res) {
   res.writeHead(200);
   res.write('foo');
 
-  complete = complete || function () {
+  complete = complete || function() {
     res.end();
   };
 });
 
 
-server.listen(common.PORT, function () {
+server.listen(common.PORT, function() {
   console.log('listen', server.address().port);
 
   var agent = new http.Agent({maxSockets: 1});
diff --git a/test/parallel/test-http-after-connect.js b/test/parallel/test-http-after-connect.js
index bff9170a21..19011fcbcb 100644
--- a/test/parallel/test-http-after-connect.js
+++ b/test/parallel/test-http-after-connect.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
diff --git a/test/parallel/test-http-agent-destroyed-socket.js b/test/parallel/test-http-agent-destroyed-socket.js
index a2fe54d1dc..954acc998c 100644
--- a/test/parallel/test-http-agent-destroyed-socket.js
+++ b/test/parallel/test-http-agent-destroyed-socket.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
diff --git a/test/parallel/test-http-agent-false.js b/test/parallel/test-http-agent-false.js
index 95c375ac37..ad8de89f20 100644
--- a/test/parallel/test-http-agent-false.js
+++ b/test/parallel/test-http-agent-false.js
@@ -1,10 +1,11 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
 
-// sending `agent: false` when `port: null` is also passed in (i.e. the result of
-// a `url.parse()` call with the default port used, 80 or 443), should not result
-// in an assertion error...
+// sending `agent: false` when `port: null` is also passed in (i.e. the result
+// of a `url.parse()` call with the default port used, 80 or 443), should not
+// result in an assertion error...
 var opts = {
   host: '127.0.0.1',
   port: null,
@@ -19,8 +20,8 @@ process.on('exit', function() {
 });
 
 // we just want an "error" (no local HTTP server on port 80) or "response"
-// to happen (user happens ot have HTTP server running on port 80). As long as the
-// process doesn't crash from a C++ assertion then we're good.
+// to happen (user happens ot have HTTP server running on port 80).
+// As long as the process doesn't crash from a C++ assertion then we're good.
 var req = http.request(opts);
 req.on('response', function(res) {
   good = true;
diff --git a/test/parallel/test-http-agent-keepalive.js b/test/parallel/test-http-agent-keepalive.js
index 7dfd6f789e..f82af380bc 100644
--- a/test/parallel/test-http-agent-keepalive.js
+++ b/test/parallel/test-http-agent-keepalive.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
@@ -11,14 +12,14 @@ var agent = new Agent({
   maxFreeSockets: 5
 });
 
-var server = http.createServer(function (req, res) {
+var server = http.createServer(function(req, res) {
   if (req.url === '/error') {
     res.destroy();
     return;
   } else if (req.url === '/remote_close') {
     // cache the socket, close it after 100ms
     var socket = res.connection;
-    setTimeout(function () {
+    setTimeout(function() {
       socket.end();
     }, 100);
   }
@@ -44,13 +45,13 @@ function checkDataAndSockets(body) {
 
 function second() {
   // request second, use the same socket
-  get('/second', function (res) {
+  get('/second', function(res) {
     assert.equal(res.statusCode, 200);
     res.on('data', checkDataAndSockets);
-    res.on('end', function () {
+    res.on('end', function() {
       assert.equal(agent.sockets[name].length, 1);
       assert.equal(agent.freeSockets[name], undefined);
-      process.nextTick(function () {
+      process.nextTick(function() {
         assert.equal(agent.sockets[name], undefined);
         assert.equal(agent.freeSockets[name].length, 1);
         remoteClose();
@@ -61,17 +62,17 @@ function second() {
 
 function remoteClose() {
   // mock remote server close the socket
-  get('/remote_close', function (res) {
+  get('/remote_close', function(res) {
     assert.deepEqual(res.statusCode, 200);
     res.on('data', checkDataAndSockets);
-    res.on('end', function () {
+    res.on('end', function() {
       assert.equal(agent.sockets[name].length, 1);
       assert.equal(agent.freeSockets[name], undefined);
-      process.nextTick(function () {
+      process.nextTick(function() {
         assert.equal(agent.sockets[name], undefined);
         assert.equal(agent.freeSockets[name].length, 1);
         // waitting remote server close the socket
-        setTimeout(function () {
+        setTimeout(function() {
           assert.equal(agent.sockets[name], undefined);
           assert.equal(agent.freeSockets[name], undefined,
             'freeSockets is not empty');
@@ -84,16 +85,16 @@ function remoteClose() {
 
 function remoteError() {
   // remove server will destroy ths socket
-  var req = get('/error', function (res) {
+  var req = get('/error', function(res) {
     throw new Error('should not call this function');
   });
-  req.on('error', function (err) {
+  req.on('error', function(err) {
     assert.ok(err);
     assert.equal(err.message, 'socket hang up');
     assert.equal(agent.sockets[name].length, 1);
     assert.equal(agent.freeSockets[name], undefined);
     // Wait socket 'close' event emit
-    setTimeout(function () {
+    setTimeout(function() {
       assert.equal(agent.sockets[name], undefined);
       assert.equal(agent.freeSockets[name], undefined);
       done();
@@ -108,13 +109,13 @@ function done() {
 
 server.listen(common.PORT, function() {
   // request first, and keep alive
-  get('/first', function (res) {
+  get('/first', function(res) {
     assert.equal(res.statusCode, 200);
     res.on('data', checkDataAndSockets);
-    res.on('end', function () {
+    res.on('end', function() {
       assert.equal(agent.sockets[name].length, 1);
       assert.equal(agent.freeSockets[name], undefined);
-      process.nextTick(function () {
+      process.nextTick(function() {
         assert.equal(agent.sockets[name], undefined);
         assert.equal(agent.freeSockets[name].length, 1);
         second();
diff --git a/test/parallel/test-http-agent-maxsockets.js b/test/parallel/test-http-agent-maxsockets.js
index 0f349eac54..e11aa2adda 100644
--- a/test/parallel/test-http-agent-maxsockets.js
+++ b/test/parallel/test-http-agent-maxsockets.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
diff --git a/test/parallel/test-http-agent-no-protocol.js b/test/parallel/test-http-agent-no-protocol.js
index 1f910c33e5..d5b7e5e194 100644
--- a/test/parallel/test-http-agent-no-protocol.js
+++ b/test/parallel/test-http-agent-no-protocol.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
@@ -21,7 +22,7 @@ var server = http.createServer(function(req, res) {
   opts.agent = new http.Agent();
   opts.agent.protocol = null;
 
-  http.get(opts, function (res) {
+  http.get(opts, function(res) {
     response++;
     res.resume();
     server.close();
diff --git a/test/parallel/test-http-agent-null.js b/test/parallel/test-http-agent-null.js
index 397a5e0f4b..e118738f66 100644
--- a/test/parallel/test-http-agent-null.js
+++ b/test/parallel/test-http-agent-null.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
diff --git a/test/parallel/test-http-agent.js b/test/parallel/test-http-agent.js
index a485bc996a..09ba9c34e2 100644
--- a/test/parallel/test-http-agent.js
+++ b/test/parallel/test-http-agent.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
diff --git a/test/parallel/test-http-allow-req-after-204-res.js b/test/parallel/test-http-allow-req-after-204-res.js
index e671bec029..ba98138bdc 100644
--- a/test/parallel/test-http-allow-req-after-204-res.js
+++ b/test/parallel/test-http-allow-req-after-204-res.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var http = require('http');
 var assert = require('assert');
diff --git a/test/parallel/test-http-automatic-headers.js b/test/parallel/test-http-automatic-headers.js
index 76e5a61318..8c45451702 100644
--- a/test/parallel/test-http-automatic-headers.js
+++ b/test/parallel/test-http-automatic-headers.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
diff --git a/test/parallel/test-http-bind-twice.js b/test/parallel/test-http-bind-twice.js
index 187f35ab87..4dde7c6d25 100644
--- a/test/parallel/test-http-bind-twice.js
+++ b/test/parallel/test-http-bind-twice.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
diff --git a/test/parallel/test-http-blank-header.js b/test/parallel/test-http-blank-header.js
index 1fb1e0af96..00a94d0b83 100644
--- a/test/parallel/test-http-blank-header.js
+++ b/test/parallel/test-http-blank-header.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
diff --git a/test/parallel/test-http-buffer-sanity.js b/test/parallel/test-http-buffer-sanity.js
index f55d36c770..4b120311d7 100644
--- a/test/parallel/test-http-buffer-sanity.js
+++ b/test/parallel/test-http-buffer-sanity.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
diff --git a/test/parallel/test-http-byteswritten.js b/test/parallel/test-http-byteswritten.js
index 00ba09143e..974f446dd4 100644
--- a/test/parallel/test-http-byteswritten.js
+++ b/test/parallel/test-http-byteswritten.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var fs = require('fs');
diff --git a/test/parallel/test-http-chunked-304.js b/test/parallel/test-http-chunked-304.js
index 86e0b0d11d..0f97942048 100644
--- a/test/parallel/test-http-chunked-304.js
+++ b/test/parallel/test-http-chunked-304.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
diff --git a/test/parallel/test-http-chunked.js b/test/parallel/test-http-chunked.js
index b666e051cc..74b6943ab4 100644
--- a/test/parallel/test-http-chunked.js
+++ b/test/parallel/test-http-chunked.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
@@ -24,7 +25,7 @@ server.listen(common.PORT, function() {
     port: common.PORT
   }, function(x) {
     x.setEncoding('utf8');
-    x.on('data', function(c) {data += c});
+    x.on('data', function(c) {data += c;});
     x.on('error', function(e) {
       throw e;
     });
@@ -36,7 +37,7 @@ server.listen(common.PORT, function() {
       server.close();
     });
   });
-  get.on('error', function(e) {throw e});
+  get.on('error', function(e) {throw e;});
   get.end();
 
 });
diff --git a/test/parallel/test-http-client-abort-event.js b/test/parallel/test-http-client-abort-event.js
index 1549d06101..b428038028 100644
--- a/test/parallel/test-http-client-abort-event.js
+++ b/test/parallel/test-http-client-abort-event.js
@@ -1,3 +1,4 @@
+'use strict';
 var assert = require('assert');
 var http = require('http');
 var common = require('../common');
@@ -25,4 +26,4 @@ server.listen(common.PORT, function() {
 
 process.on('exit', function() {
   assert.equal(count, 1);
-})
+});
diff --git a/test/parallel/test-http-client-abort.js b/test/parallel/test-http-client-abort.js
index 1359df5a6c..c3353bb722 100644
--- a/test/parallel/test-http-client-abort.js
+++ b/test/parallel/test-http-client-abort.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
diff --git a/test/parallel/test-http-client-abort2.js b/test/parallel/test-http-client-abort2.js
index c7c19acccf..3f7ae98fa2 100644
--- a/test/parallel/test-http-client-abort2.js
+++ b/test/parallel/test-http-client-abort2.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
diff --git a/test/parallel/test-http-client-agent.js b/test/parallel/test-http-client-agent.js
index e97a14720f..afe98902e5 100644
--- a/test/parallel/test-http-client-agent.js
+++ b/test/parallel/test-http-client-agent.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
diff --git a/test/parallel/test-http-client-default-headers-exist.js b/test/parallel/test-http-client-default-headers-exist.js
index 0217538497..94106285be 100644
--- a/test/parallel/test-http-client-default-headers-exist.js
+++ b/test/parallel/test-http-client-default-headers-exist.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
diff --git a/test/parallel/test-http-client-encoding.js b/test/parallel/test-http-client-encoding.js
index a93b33620f..dd696f4dff 100644
--- a/test/parallel/test-http-client-encoding.js
+++ b/test/parallel/test-http-client-encoding.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-http-client-get-url.js b/test/parallel/test-http-client-get-url.js
index 03fa3331e9..1dd23143e4 100644
--- a/test/parallel/test-http-client-get-url.js
+++ b/test/parallel/test-http-client-get-url.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
diff --git a/test/parallel/test-http-client-parse-error.js b/test/parallel/test-http-client-parse-error.js
index 38f2628741..43f85853b3 100644
--- a/test/parallel/test-http-client-parse-error.js
+++ b/test/parallel/test-http-client-parse-error.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-http-client-pipe-end.js b/test/parallel/test-http-client-pipe-end.js
index 6f05d30931..d794aae446 100644
--- a/test/parallel/test-http-client-pipe-end.js
+++ b/test/parallel/test-http-client-pipe-end.js
@@ -1,3 +1,4 @@
+'use strict';
 // see https://github.com/joyent/node/issues/3257
 
 var common = require('../common');
@@ -23,7 +24,7 @@ server.listen(common.PIPE, function() {
 
   req.write('.');
 
-  sched(function() { req.end() }, 5);
+  sched(function() { req.end(); }, 5);
 });
 
 // schedule a callback after `ticks` event loop ticks
diff --git a/test/parallel/test-http-client-race-2.js b/test/parallel/test-http-client-race-2.js
index fabb2c50a8..0a98e06c7b 100644
--- a/test/parallel/test-http-client-race-2.js
+++ b/test/parallel/test-http-client-race-2.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
@@ -79,7 +80,7 @@ server.on('listening', function() {
             req3.end();
             req3.on('response', function(res3) {
               res3.setEncoding('utf8');
-              res3.on('data', function(chunk) { body3 += chunk });
+              res3.on('data', function(chunk) { body3 += chunk; });
               res3.on('end', function() { server.close(); });
             });
           });
diff --git a/test/parallel/test-http-client-race.js b/test/parallel/test-http-client-race.js
index c284fbae77..11dcb7ae4c 100644
--- a/test/parallel/test-http-client-race.js
+++ b/test/parallel/test-http-client-race.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
diff --git a/test/parallel/test-http-client-read-in-error.js b/test/parallel/test-http-client-read-in-error.js
index 6568d7e28d..8d74aecb51 100644
--- a/test/parallel/test-http-client-read-in-error.js
+++ b/test/parallel/test-http-client-read-in-error.js
@@ -1,3 +1,4 @@
+'use strict';
 var net = require('net');
 var http = require('http');
 var util = require('util');
diff --git a/test/parallel/test-http-client-readable.js b/test/parallel/test-http-client-readable.js
index e690ba7ba5..ba9fdd658c 100644
--- a/test/parallel/test-http-client-readable.js
+++ b/test/parallel/test-http-client-readable.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
diff --git a/test/parallel/test-http-client-response-domain.js b/test/parallel/test-http-client-response-domain.js
index 1c38a1a254..1637882a3c 100644
--- a/test/parallel/test-http-client-response-domain.js
+++ b/test/parallel/test-http-client-response-domain.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common'),
     assert = require('assert'),
     http = require('http'),
diff --git a/test/parallel/test-http-client-timeout-agent.js b/test/parallel/test-http-client-timeout-agent.js
index a928b12090..809742f562 100644
--- a/test/parallel/test-http-client-timeout-agent.js
+++ b/test/parallel/test-http-client-timeout-agent.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
@@ -23,35 +24,35 @@ var server = http.createServer(function(req, res) {
     res.write(reqid.toString());
     res.end();
   }
-  request_number+=1;
+  request_number += 1;
 });
 
 server.listen(options.port, options.host, function() {
   var req;
 
-  for (requests_sent = 0; requests_sent < 30; requests_sent+=1) {
+  for (requests_sent = 0; requests_sent < 30; requests_sent += 1) {
     options.path = '/' + requests_sent;
     req = http.request(options);
     req.id = requests_sent;
     req.on('response', function(res) {
       res.on('data', function(data) {
-        console.log('res#'+this.req.id+' data:'+data);
+        console.log('res#' + this.req.id + ' data:' + data);
       });
       res.on('end', function(data) {
-        console.log('res#'+this.req.id+' end');
+        console.log('res#' + this.req.id + ' end');
         requests_done += 1;
       });
     });
     req.on('close', function() {
-      console.log('req#'+this.id+' close');
+      console.log('req#' + this.id + ' close');
     });
     req.on('error', function() {
-      console.log('req#'+this.id+' error');
+      console.log('req#' + this.id + ' error');
       this.destroy();
     });
-    req.setTimeout(50, function () {
+    req.setTimeout(50, function() {
       var req = this;
-      console.log('req#'+this.id + ' timeout');
+      console.log('req#' + this.id + ' timeout');
       req.abort();
       requests_done += 1;
     });
@@ -71,5 +72,6 @@ server.listen(options.port, options.host, function() {
 
 process.on('exit', function() {
   console.error('done=%j sent=%j', requests_done, requests_sent);
-  assert.ok(requests_done == requests_sent, 'timeout on http request called too much');
+  assert.ok(requests_done == requests_sent,
+            'timeout on http request called too much');
 });
diff --git a/test/parallel/test-http-client-timeout-event.js b/test/parallel/test-http-client-timeout-event.js
index c975d69d39..c9d6594192 100644
--- a/test/parallel/test-http-client-timeout-event.js
+++ b/test/parallel/test-http-client-timeout-event.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
@@ -26,14 +27,14 @@ server.listen(options.port, options.host, function() {
 
   var timeout_events = 0;
   req.setTimeout(1);
-  req.on('timeout', function () {
+  req.on('timeout', function() {
     timeout_events += 1;
   });
-  setTimeout(function () {
+  setTimeout(function() {
     req.destroy();
     assert.equal(timeout_events, 1);
   }, 100);
-  setTimeout(function () {
+  setTimeout(function() {
     req.end();
   }, 50);
 });
diff --git a/test/parallel/test-http-client-timeout-with-data.js b/test/parallel/test-http-client-timeout-with-data.js
index accf8c1341..0aefe62ef4 100644
--- a/test/parallel/test-http-client-timeout-with-data.js
+++ b/test/parallel/test-http-client-timeout-with-data.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
@@ -20,7 +21,7 @@ var options = {
 var server = http.createServer(function(req, res) {
   res.writeHead(200, {'Content-Length':'2'});
   res.write('*');
-  setTimeout(function() { res.end('*') }, 100);
+  setTimeout(function() { res.end('*'); }, 100);
 });
 
 server.listen(options.port, options.host, function() {
diff --git a/test/parallel/test-http-client-timeout.js b/test/parallel/test-http-client-timeout.js
index a9b093eb0c..1b09254d39 100644
--- a/test/parallel/test-http-client-timeout.js
+++ b/test/parallel/test-http-client-timeout.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
diff --git a/test/parallel/test-http-client-unescaped-path.js b/test/parallel/test-http-client-unescaped-path.js
index 51e1fc7828..1536916ae9 100644
--- a/test/parallel/test-http-client-unescaped-path.js
+++ b/test/parallel/test-http-client-unescaped-path.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
diff --git a/test/parallel/test-http-client-upload-buf.js b/test/parallel/test-http-client-upload-buf.js
index 5e544ccf51..760f9c9562 100644
--- a/test/parallel/test-http-client-upload-buf.js
+++ b/test/parallel/test-http-client-upload-buf.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
diff --git a/test/parallel/test-http-client-upload.js b/test/parallel/test-http-client-upload.js
index 44fd5eabf2..48ebfcc74d 100644
--- a/test/parallel/test-http-client-upload.js
+++ b/test/parallel/test-http-client-upload.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
diff --git a/test/parallel/test-http-conn-reset.js b/test/parallel/test-http-conn-reset.js
index d340aa744c..2f047a2de4 100644
--- a/test/parallel/test-http-conn-reset.js
+++ b/test/parallel/test-http-conn-reset.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
diff --git a/test/parallel/test-http-connect.js b/test/parallel/test-http-connect.js
index 5ba24df5c1..92fed5a725 100644
--- a/test/parallel/test-http-connect.js
+++ b/test/parallel/test-http-connect.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
diff --git a/test/parallel/test-http-content-length.js b/test/parallel/test-http-content-length.js
index 07180f26ad..6c9576cdab 100644
--- a/test/parallel/test-http-content-length.js
+++ b/test/parallel/test-http-content-length.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
diff --git a/test/parallel/test-http-contentLength0.js b/test/parallel/test-http-contentLength0.js
index 9b565c5470..9004649d1d 100644
--- a/test/parallel/test-http-contentLength0.js
+++ b/test/parallel/test-http-contentLength0.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var http = require('http');
 
diff --git a/test/parallel/test-http-createConnection.js b/test/parallel/test-http-createConnection.js
index 1da2d18f41..48a7d7dbe6 100644
--- a/test/parallel/test-http-createConnection.js
+++ b/test/parallel/test-http-createConnection.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
@@ -14,7 +15,7 @@ var server = http.createServer(function(req, res) {
   res.end();
   response++;
 }).listen(common.PORT, '127.0.0.1', function() {
-  http.get({ createConnection: createConnection }, function (res) {
+  http.get({ createConnection: createConnection }, function(res) {
     res.resume();
     server.close();
   });
diff --git a/test/parallel/test-http-curl-chunk-problem.js b/test/parallel/test-http-curl-chunk-problem.js
index fcb186153d..55fce4ad5e 100644
--- a/test/parallel/test-http-curl-chunk-problem.js
+++ b/test/parallel/test-http-curl-chunk-problem.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 if (!common.opensslCli) {
diff --git a/test/parallel/test-http-date-header.js b/test/parallel/test-http-date-header.js
index 293a9b9929..4c73800a8e 100644
--- a/test/parallel/test-http-date-header.js
+++ b/test/parallel/test-http-date-header.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
diff --git a/test/parallel/test-http-default-encoding.js b/test/parallel/test-http-default-encoding.js
index 6a2ac36ebd..a40c8841ec 100644
--- a/test/parallel/test-http-default-encoding.js
+++ b/test/parallel/test-http-default-encoding.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
diff --git a/test/parallel/test-http-default-port.js b/test/parallel/test-http-default-port.js
index 5f70207312..457424ecfa 100644
--- a/test/parallel/test-http-default-port.js
+++ b/test/parallel/test-http-default-port.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var http = require('http'),
     PORT = common.PORT,
diff --git a/test/parallel/test-http-destroyed-socket-write2.js b/test/parallel/test-http-destroyed-socket-write2.js
index e7a47ca9cf..5bbb3bbc94 100644
--- a/test/parallel/test-http-destroyed-socket-write2.js
+++ b/test/parallel/test-http-destroyed-socket-write2.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-http-dns-error.js b/test/parallel/test-http-dns-error.js
index 15547cd394..55195e45b7 100644
--- a/test/parallel/test-http-dns-error.js
+++ b/test/parallel/test-http-dns-error.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-http-end-throw-socket-handling.js b/test/parallel/test-http-end-throw-socket-handling.js
index 92a5ae6a38..204c0f7333 100644
--- a/test/parallel/test-http-end-throw-socket-handling.js
+++ b/test/parallel/test-http-end-throw-socket-handling.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
@@ -19,8 +20,8 @@ server.listen(common.PORT, function() {
   for (var i = 0; i < 10; i++) {
     var options = { port: common.PORT };
 
-    var req = http.request(options, function (res) {
-      res.resume()
+    var req = http.request(options, function(res) {
+      res.resume();
       res.on('end', function() {
         throw new Error('gleep glorp');
       });
diff --git a/test/parallel/test-http-eof-on-connect.js b/test/parallel/test-http-eof-on-connect.js
index a08ac9c7b0..e676643bab 100644
--- a/test/parallel/test-http-eof-on-connect.js
+++ b/test/parallel/test-http-eof-on-connect.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var net = require('net');
diff --git a/test/parallel/test-http-exceptions.js b/test/parallel/test-http-exceptions.js
index 6e0b5b9a6b..dc2d5583dd 100644
--- a/test/parallel/test-http-exceptions.js
+++ b/test/parallel/test-http-exceptions.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
diff --git a/test/parallel/test-http-exit-delay.js b/test/parallel/test-http-exit-delay.js
index 191b96d28b..b06b33b594 100644
--- a/test/parallel/test-http-exit-delay.js
+++ b/test/parallel/test-http-exit-delay.js
@@ -1,3 +1,4 @@
+'use strict';
 var assert = require('assert');
 var common = require('../common');
 var http = require('http');
diff --git a/test/parallel/test-http-expect-continue.js b/test/parallel/test-http-expect-continue.js
index ed6de31095..aef4a98d84 100644
--- a/test/parallel/test-http-expect-continue.js
+++ b/test/parallel/test-http-expect-continue.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
diff --git a/test/parallel/test-http-extra-response.js b/test/parallel/test-http-extra-response.js
index ac2d9b6157..bfd9b59462 100644
--- a/test/parallel/test-http-extra-response.js
+++ b/test/parallel/test-http-extra-response.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
diff --git a/test/parallel/test-http-flush-headers.js b/test/parallel/test-http-flush-headers.js
index ede0fa5202..da1bd24c54 100644
--- a/test/parallel/test-http-flush-headers.js
+++ b/test/parallel/test-http-flush-headers.js
@@ -4,7 +4,7 @@ const assert = require('assert');
 const http = require('http');
 
 const server = http.createServer();
-server.on('request', function(req, res){
+server.on('request', function(req, res) {
   assert(req.headers['foo'], 'bar');
   res.end('ok');
   server.close();
diff --git a/test/parallel/test-http-flush.js b/test/parallel/test-http-flush.js
index 8d5a593cd9..cac1caf752 100644
--- a/test/parallel/test-http-flush.js
+++ b/test/parallel/test-http-flush.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
diff --git a/test/parallel/test-http-full-response.js b/test/parallel/test-http-full-response.js
index 4f3ce63dd8..da1b6d7f22 100644
--- a/test/parallel/test-http-full-response.js
+++ b/test/parallel/test-http-full-response.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 // This test requires the program 'ab'
diff --git a/test/parallel/test-http-get-pipeline-problem.js b/test/parallel/test-http-get-pipeline-problem.js
index 4d36cd3f7e..9c51bd1191 100644
--- a/test/parallel/test-http-get-pipeline-problem.js
+++ b/test/parallel/test-http-get-pipeline-problem.js
@@ -1,3 +1,4 @@
+'use strict';
 // We are demonstrating a problem with http.get when queueing up many
 // transfers. The server simply introduces some delay and sends a file.
 // Note this is demonstrated with connection: close.
diff --git a/test/parallel/test-http-head-request.js b/test/parallel/test-http-head-request.js
index 2310a6f831..5a6f90507c 100644
--- a/test/parallel/test-http-head-request.js
+++ b/test/parallel/test-http-head-request.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
diff --git a/test/parallel/test-http-head-response-has-no-body-end.js b/test/parallel/test-http-head-response-has-no-body-end.js
index 4f0fb5341e..e0fdb131ed 100644
--- a/test/parallel/test-http-head-response-has-no-body-end.js
+++ b/test/parallel/test-http-head-response-has-no-body-end.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-http-head-response-has-no-body.js b/test/parallel/test-http-head-response-has-no-body.js
index 73fcf0b31f..ef1fc530db 100644
--- a/test/parallel/test-http-head-response-has-no-body.js
+++ b/test/parallel/test-http-head-response-has-no-body.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-http-header-read.js b/test/parallel/test-http-header-read.js
index 0cba3d3741..6266f8b11f 100644
--- a/test/parallel/test-http-header-read.js
+++ b/test/parallel/test-http-header-read.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
diff --git a/test/parallel/test-http-header-response-splitting.js b/test/parallel/test-http-header-response-splitting.js
index 148de1d245..b499ae33d1 100644
--- a/test/parallel/test-http-header-response-splitting.js
+++ b/test/parallel/test-http-header-response-splitting.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common'),
     assert = require('assert'),
     http = require('http');
diff --git a/test/parallel/test-http-hex-write.js b/test/parallel/test-http-hex-write.js
index acce151b20..371bbe7a43 100644
--- a/test/parallel/test-http-hex-write.js
+++ b/test/parallel/test-http-hex-write.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-http-host-headers.js b/test/parallel/test-http-host-headers.js
index 10e5030660..b5c083dfdf 100644
--- a/test/parallel/test-http-host-headers.js
+++ b/test/parallel/test-http-host-headers.js
@@ -1,3 +1,4 @@
+'use strict';
 var http = require('http'),
     common = require('../common'),
     assert = require('assert'),
diff --git a/test/parallel/test-http-incoming-pipelined-socket-destroy.js b/test/parallel/test-http-incoming-pipelined-socket-destroy.js
index 26b704e6d5..21cd3e69df 100644
--- a/test/parallel/test-http-incoming-pipelined-socket-destroy.js
+++ b/test/parallel/test-http-incoming-pipelined-socket-destroy.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
@@ -42,7 +43,7 @@ function generator(seeds) {
     return 'GET /' + r + ' HTTP/1.1\r\n' +
            'Host: localhost:' + common.PORT + '\r\n' +
            '\r\n' +
-           '\r\n'
+           '\r\n';
   }).join('');
 }
 
diff --git a/test/parallel/test-http-keep-alive-close-on-header.js b/test/parallel/test-http-keep-alive-close-on-header.js
index 200f017a80..9ed6077b94 100644
--- a/test/parallel/test-http-keep-alive-close-on-header.js
+++ b/test/parallel/test-http-keep-alive-close-on-header.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
diff --git a/test/parallel/test-http-keep-alive.js b/test/parallel/test-http-keep-alive.js
index 58c7061059..f89f7698c4 100644
--- a/test/parallel/test-http-keep-alive.js
+++ b/test/parallel/test-http-keep-alive.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
diff --git a/test/parallel/test-http-keepalive-client.js b/test/parallel/test-http-keepalive-client.js
index 6bc459e3b9..c573ac82d6 100644
--- a/test/parallel/test-http-keepalive-client.js
+++ b/test/parallel/test-http-keepalive-client.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
@@ -66,6 +67,6 @@ function makeRequest(n) {
 }
 
 process.on('exit', function() {
-  assert.equal(actualRequests, expectRequests)
+  assert.equal(actualRequests, expectRequests);
   console.log('ok');
 });
diff --git a/test/parallel/test-http-keepalive-maxsockets.js b/test/parallel/test-http-keepalive-maxsockets.js
index e0e27f5e24..a5382b6e32 100644
--- a/test/parallel/test-http-keepalive-maxsockets.js
+++ b/test/parallel/test-http-keepalive-maxsockets.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-http-keepalive-request.js b/test/parallel/test-http-keepalive-request.js
index 51e9d66b1f..8736c9cd4f 100644
--- a/test/parallel/test-http-keepalive-request.js
+++ b/test/parallel/test-http-keepalive-request.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
@@ -66,6 +67,6 @@ function makeRequest(n) {
 }
 
 process.on('exit', function() {
-  assert.equal(actualRequests, expectRequests)
+  assert.equal(actualRequests, expectRequests);
   console.log('ok');
 });
diff --git a/test/parallel/test-http-legacy.js b/test/parallel/test-http-legacy.js
index 7a3ae35725..039037114d 100644
--- a/test/parallel/test-http-legacy.js
+++ b/test/parallel/test-http-legacy.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
diff --git a/test/parallel/test-http-localaddress-bind-error.js b/test/parallel/test-http-localaddress-bind-error.js
index 9ee8c1d74f..80c7cab7c8 100644
--- a/test/parallel/test-http-localaddress-bind-error.js
+++ b/test/parallel/test-http-localaddress-bind-error.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
@@ -6,7 +7,7 @@ var invalidLocalAddress = '1.2.3.4';
 var gotError = false;
 
 var server = http.createServer(function(req, res) {
-  console.log("Connect from: " + req.connection.remoteAddress);
+  console.log('Connect from: ' + req.connection.remoteAddress);
 
   req.on('end', function() {
     res.writeHead(200, { 'Content-Type': 'text/plain' });
@@ -15,7 +16,7 @@ var server = http.createServer(function(req, res) {
   req.resume();
 });
 
-server.listen(common.PORT, "127.0.0.1", function() {
+server.listen(common.PORT, '127.0.0.1', function() {
   var req = http.request({
     host: 'localhost',
     port: common.PORT,
diff --git a/test/parallel/test-http-localaddress.js b/test/parallel/test-http-localaddress.js
index 3cd8213152..9cc6a80d0b 100644
--- a/test/parallel/test-http-localaddress.js
+++ b/test/parallel/test-http-localaddress.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var http = require('http'),
     assert = require('assert');
@@ -7,8 +8,8 @@ if (!common.hasMultiLocalhost()) {
   process.exit();
 }
 
-var server = http.createServer(function (req, res) {
-  console.log("Connect from: " + req.connection.remoteAddress);
+var server = http.createServer(function(req, res) {
+  console.log('Connect from: ' + req.connection.remoteAddress);
   assert.equal('127.0.0.2', req.connection.remoteAddress);
 
   req.on('end', function() {
@@ -18,7 +19,7 @@ var server = http.createServer(function (req, res) {
   req.resume();
 });
 
-server.listen(common.PORT, "127.0.0.1", function() {
+server.listen(common.PORT, '127.0.0.1', function() {
   var options = { host: 'localhost',
     port: common.PORT,
     path: '/',
diff --git a/test/parallel/test-http-malformed-request.js b/test/parallel/test-http-malformed-request.js
index 26a0f34079..5f65113afd 100644
--- a/test/parallel/test-http-malformed-request.js
+++ b/test/parallel/test-http-malformed-request.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var net = require('net');
diff --git a/test/parallel/test-http-many-ended-pipelines.js b/test/parallel/test-http-many-ended-pipelines.js
index 6824627151..4e0bc7e8ff 100644
--- a/test/parallel/test-http-many-ended-pipelines.js
+++ b/test/parallel/test-http-many-ended-pipelines.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
@@ -28,7 +29,7 @@ server.listen(common.PORT);
 var client = net.connect({ port: common.PORT, allowHalfOpen: true });
 for (var i = 0; i < numRequests; i++) {
   client.write('GET / HTTP/1.1\r\n' +
-               'Host: some.host.name\r\n'+
+               'Host: some.host.name\r\n' +
                '\r\n\r\n');
 }
 client.end();
diff --git a/test/parallel/test-http-max-headers-count.js b/test/parallel/test-http-max-headers-count.js
index ed9b34297b..18b160d0b6 100644
--- a/test/parallel/test-http-max-headers-count.js
+++ b/test/parallel/test-http-max-headers-count.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
diff --git a/test/parallel/test-http-methods.js b/test/parallel/test-http-methods.js
index 620db49434..348fd2e519 100644
--- a/test/parallel/test-http-methods.js
+++ b/test/parallel/test-http-methods.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
diff --git a/test/parallel/test-http-multi-line-headers.js b/test/parallel/test-http-multi-line-headers.js
index 44d696a5a0..0c36b7cbf3 100644
--- a/test/parallel/test-http-multi-line-headers.js
+++ b/test/parallel/test-http-multi-line-headers.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-http-mutable-headers.js b/test/parallel/test-http-mutable-headers.js
index 296b1622a0..2a60117328 100644
--- a/test/parallel/test-http-mutable-headers.js
+++ b/test/parallel/test-http-mutable-headers.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
@@ -21,10 +22,10 @@ var cookies = [
 var s = http.createServer(function(req, res) {
   switch (test) {
     case 'headers':
-      assert.throws(function() { res.setHeader() });
-      assert.throws(function() { res.setHeader('someHeader') });
-      assert.throws(function() { res.getHeader() });
-      assert.throws(function() { res.removeHeader() });
+      assert.throws(function() { res.setHeader(); });
+      assert.throws(function() { res.setHeader('someHeader'); });
+      assert.throws(function() { res.getHeader(); });
+      assert.throws(function() { res.removeHeader(); });
 
       res.setHeader('x-test-header', 'testing');
       res.setHeader('X-TEST-HEADER2', 'testing');
diff --git a/test/parallel/test-http-no-content-length.js b/test/parallel/test-http-no-content-length.js
index 527ffb7d37..5752e5e924 100644
--- a/test/parallel/test-http-no-content-length.js
+++ b/test/parallel/test-http-no-content-length.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var net = require('net');
diff --git a/test/parallel/test-http-outgoing-finish.js b/test/parallel/test-http-outgoing-finish.js
index e25f8ab743..2140759139 100644
--- a/test/parallel/test-http-outgoing-finish.js
+++ b/test/parallel/test-http-outgoing-finish.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-http-parser-bad-ref.js b/test/parallel/test-http-parser-bad-ref.js
index 0e2a77bb3a..d409dc62d0 100644
--- a/test/parallel/test-http-parser-bad-ref.js
+++ b/test/parallel/test-http-parser-bad-ref.js
@@ -1,3 +1,4 @@
+'use strict';
 // Run this program with valgrind or efence with --expose_gc to expose the
 // problem.
 
diff --git a/test/parallel/test-http-parser-free.js b/test/parallel/test-http-parser-free.js
index 52df3836d7..af94d0c89c 100644
--- a/test/parallel/test-http-parser-free.js
+++ b/test/parallel/test-http-parser-free.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
diff --git a/test/parallel/test-http-parser.js b/test/parallel/test-http-parser.js
index d8c181bf60..bb004f864c 100644
--- a/test/parallel/test-http-parser.js
+++ b/test/parallel/test-http-parser.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-http-pause-resume-one-end.js b/test/parallel/test-http-pause-resume-one-end.js
index cc3e41f3e9..2a10aeb3be 100644
--- a/test/parallel/test-http-pause-resume-one-end.js
+++ b/test/parallel/test-http-pause-resume-one-end.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
diff --git a/test/parallel/test-http-pause.js b/test/parallel/test-http-pause.js
index cf318d024f..70a04657b8 100644
--- a/test/parallel/test-http-pause.js
+++ b/test/parallel/test-http-pause.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
diff --git a/test/parallel/test-http-pipe-fs.js b/test/parallel/test-http-pipe-fs.js
index 76882d6565..bfee9ce23f 100644
--- a/test/parallel/test-http-pipe-fs.js
+++ b/test/parallel/test-http-pipe-fs.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
diff --git a/test/parallel/test-http-proxy.js b/test/parallel/test-http-proxy.js
index 8d27728a92..fc8a753f24 100644
--- a/test/parallel/test-http-proxy.js
+++ b/test/parallel/test-http-proxy.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
diff --git a/test/parallel/test-http-raw-headers.js b/test/parallel/test-http-raw-headers.js
index b4c1401872..7ecaaa93cf 100644
--- a/test/parallel/test-http-raw-headers.js
+++ b/test/parallel/test-http-raw-headers.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-http-remove-header-stays-removed.js b/test/parallel/test-http-remove-header-stays-removed.js
index e963989385..904b821010 100644
--- a/test/parallel/test-http-remove-header-stays-removed.js
+++ b/test/parallel/test-http-remove-header-stays-removed.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-http-request-end-twice.js b/test/parallel/test-http-request-end-twice.js
index 5518a8140c..871880e514 100644
--- a/test/parallel/test-http-request-end-twice.js
+++ b/test/parallel/test-http-request-end-twice.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
diff --git a/test/parallel/test-http-request-end.js b/test/parallel/test-http-request-end.js
index d06c96d877..43d023028a 100644
--- a/test/parallel/test-http-request-end.js
+++ b/test/parallel/test-http-request-end.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
diff --git a/test/parallel/test-http-request-methods.js b/test/parallel/test-http-request-methods.js
index d0b474d712..b29a6663ff 100644
--- a/test/parallel/test-http-request-methods.js
+++ b/test/parallel/test-http-request-methods.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var net = require('net');
diff --git a/test/parallel/test-http-res-write-after-end.js b/test/parallel/test-http-res-write-after-end.js
index 295d38aacb..c8b3bf26e0 100644
--- a/test/parallel/test-http-res-write-after-end.js
+++ b/test/parallel/test-http-res-write-after-end.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
diff --git a/test/parallel/test-http-res-write-end-dont-take-array.js b/test/parallel/test-http-res-write-end-dont-take-array.js
index a4dcfcac0f..0befd951f0 100644
--- a/test/parallel/test-http-res-write-end-dont-take-array.js
+++ b/test/parallel/test-http-res-write-end-dont-take-array.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
diff --git a/test/parallel/test-http-response-close.js b/test/parallel/test-http-response-close.js
index 1b3433d79e..82fd782717 100644
--- a/test/parallel/test-http-response-close.js
+++ b/test/parallel/test-http-response-close.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
diff --git a/test/parallel/test-http-response-no-headers.js b/test/parallel/test-http-response-no-headers.js
index 5d18b6182c..888eb9ac4b 100644
--- a/test/parallel/test-http-response-no-headers.js
+++ b/test/parallel/test-http-response-no-headers.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
diff --git a/test/parallel/test-http-response-readable.js b/test/parallel/test-http-response-readable.js
index 0774b8ed9c..1f50137d71 100644
--- a/test/parallel/test-http-response-readable.js
+++ b/test/parallel/test-http-response-readable.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
diff --git a/test/parallel/test-http-response-status-message.js b/test/parallel/test-http-response-status-message.js
index abbae8818b..a1e1f15697 100644
--- a/test/parallel/test-http-response-status-message.js
+++ b/test/parallel/test-http-response-status-message.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
@@ -6,15 +7,24 @@ var net = require('net');
 var testsComplete = 0;
 
 var testCases = [
-  { path: "/200", statusMessage: "OK", response: 'HTTP/1.1 200 OK\r\n\r\n' },
-  { path: "/500", statusMessage: "Internal Server Error", response: 'HTTP/1.1 500 Internal Server Error\r\n\r\n' },
-  { path: "/302", statusMessage: "Moved Temporarily", response: 'HTTP/1.1 302 Moved Temporarily\r\n\r\n' },
-  { path: "/missing", statusMessage: "", response: 'HTTP/1.1 200 \r\n\r\n' },
-  { path: "/missing-no-space", statusMessage: "", response: 'HTTP/1.1 200\r\n\r\n' }
+  { path: '/200', statusMessage: 'OK',
+    response: 'HTTP/1.1 200 OK\r\n\r\n' },
+  { path: '/500', statusMessage: 'Internal Server Error',
+    response: 'HTTP/1.1 500 Internal Server Error\r\n\r\n' },
+  { path: '/302', statusMessage: 'Moved Temporarily',
+    response: 'HTTP/1.1 302 Moved Temporarily\r\n\r\n' },
+  { path: '/missing', statusMessage: '',
+    response: 'HTTP/1.1 200 \r\n\r\n' },
+  { path: '/missing-no-space', statusMessage: '',
+    response: 'HTTP/1.1 200\r\n\r\n' }
 ];
 testCases.findByPath = function(path) {
-  var matching = this.filter(function(testCase) { return testCase.path === path; });
-  if (matching.length === 0) { throw "failed to find test case with path " + path; }
+  var matching = this.filter(function(testCase) {
+    return testCase.path === path;
+  });
+  if (matching.length === 0) {
+    throw 'failed to find test case with path ' + path;
+  }
   return matching[0];
 };
 
diff --git a/test/parallel/test-http-server-multiheaders.js b/test/parallel/test-http-server-multiheaders.js
index ac5849d075..440e105337 100644
--- a/test/parallel/test-http-server-multiheaders.js
+++ b/test/parallel/test-http-server-multiheaders.js
@@ -1,3 +1,4 @@
+'use strict';
 // Verify that the HTTP server implementation handles multiple instances
 // of the same header as per RFC2616: joining the handful of fields by ', '
 // that support it, and dropping duplicates for other fields.
diff --git a/test/parallel/test-http-server-multiheaders2.js b/test/parallel/test-http-server-multiheaders2.js
index 5a3b80c5cd..438e8ba759 100644
--- a/test/parallel/test-http-server-multiheaders2.js
+++ b/test/parallel/test-http-server-multiheaders2.js
@@ -1,3 +1,4 @@
+'use strict';
 // Verify that the HTTP server implementation handles multiple instances
 // of the same header as per RFC2616: joining the handful of fields by ', '
 // that support it, and dropping duplicates for other fields.
@@ -49,10 +50,12 @@ var multipleForbidden = [
 
 var srv = http.createServer(function(req, res) {
   multipleForbidden.forEach(function(header) {
-    assert.equal(req.headers[header.toLowerCase()], 'foo', 'header parsed incorrectly: ' + header);
+    assert.equal(req.headers[header.toLowerCase()],
+                 'foo', 'header parsed incorrectly: ' + header);
   });
   multipleAllowed.forEach(function(header) {
-    assert.equal(req.headers[header.toLowerCase()], 'foo, bar', 'header parsed incorrectly: ' + header);
+    assert.equal(req.headers[header.toLowerCase()],
+                 'foo, bar', 'header parsed incorrectly: ' + header);
   });
   assert.equal(req.headers['content-length'], 0);
 
@@ -65,7 +68,7 @@ var srv = http.createServer(function(req, res) {
 function makeHeader(value) {
   return function(header) {
     return [header, value];
-  }
+  };
 }
 
 var headers = []
diff --git a/test/parallel/test-http-server-stale-close.js b/test/parallel/test-http-server-stale-close.js
index aa834b1fae..a866d39c2c 100644
--- a/test/parallel/test-http-server-stale-close.js
+++ b/test/parallel/test-http-server-stale-close.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
diff --git a/test/parallel/test-http-server.js b/test/parallel/test-http-server.js
index b96b57998a..9ba13ddf96 100644
--- a/test/parallel/test-http-server.js
+++ b/test/parallel/test-http-server.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var net = require('net');
diff --git a/test/parallel/test-http-set-cookies.js b/test/parallel/test-http-set-cookies.js
index 1c03db01db..9a43f82a39 100644
--- a/test/parallel/test-http-set-cookies.js
+++ b/test/parallel/test-http-set-cookies.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
diff --git a/test/parallel/test-http-set-timeout-server.js b/test/parallel/test-http-set-timeout-server.js
index caefc03832..67db16d2a2 100644
--- a/test/parallel/test-http-set-timeout-server.js
+++ b/test/parallel/test-http-set-timeout-server.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
@@ -16,8 +17,9 @@ function run() {
   if (fn) {
     console.log('# %s', fn.name);
     fn(run);
-  } else
+  } else {
     console.log('ok');
+  }
 }
 
 test(function serverTimeout(cb) {
diff --git a/test/parallel/test-http-set-timeout.js b/test/parallel/test-http-set-timeout.js
index 5bb34ad4ff..b3ca90a67b 100644
--- a/test/parallel/test-http-set-timeout.js
+++ b/test/parallel/test-http-set-timeout.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
diff --git a/test/parallel/test-http-set-trailers.js b/test/parallel/test-http-set-trailers.js
index 98001afb66..6f5c02f560 100644
--- a/test/parallel/test-http-set-trailers.js
+++ b/test/parallel/test-http-set-trailers.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
diff --git a/test/parallel/test-http-should-keep-alive.js b/test/parallel/test-http-should-keep-alive.js
index 3c2d253083..870223a37b 100644
--- a/test/parallel/test-http-should-keep-alive.js
+++ b/test/parallel/test-http-should-keep-alive.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
diff --git a/test/parallel/test-http-status-code.js b/test/parallel/test-http-status-code.js
index e862ed6076..19c36b0b2f 100644
--- a/test/parallel/test-http-status-code.js
+++ b/test/parallel/test-http-status-code.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
diff --git a/test/parallel/test-http-status-message.js b/test/parallel/test-http-status-message.js
index 8d79d1a5af..e579b8e995 100644
--- a/test/parallel/test-http-status-message.js
+++ b/test/parallel/test-http-status-message.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
diff --git a/test/parallel/test-http-timeout-overflow.js b/test/parallel/test-http-timeout-overflow.js
index b4d64e459b..0df485edc9 100644
--- a/test/parallel/test-http-timeout-overflow.js
+++ b/test/parallel/test-http-timeout-overflow.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
@@ -14,7 +15,7 @@ var server = http.createServer(function(req, res) {
 });
 
 server.listen(port, function() {
-  function callback(){}
+  function callback() {}
 
   var req = http.request({
     port: port,
@@ -26,7 +27,7 @@ server.listen(port, function() {
     res.on('end', function() {
       clientRequests++;
       server.close();
-    })
+    });
 
     res.resume();
   });
diff --git a/test/parallel/test-http-timeout.js b/test/parallel/test-http-timeout.js
index 80393837f3..aab903420f 100644
--- a/test/parallel/test-http-timeout.js
+++ b/test/parallel/test-http-timeout.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
@@ -6,8 +7,8 @@ var http = require('http');
 var port = common.PORT;
 
 var server = http.createServer(function(req, res) {
-      res.writeHead(200, {'Content-Type': 'text/plain'});
-      res.end('OK');
+  res.writeHead(200, {'Content-Type': 'text/plain'});
+  res.end('OK');
 });
 
 var agent = new http.Agent({maxSockets: 1});
@@ -18,13 +19,13 @@ server.listen(port, function() {
     createRequest().end();
   }
 
-  function callback(){}
+  function callback() {}
 
   var count = 0;
 
   function createRequest() {
-    var req = http.request({port: port, path: '/', agent: agent}, function(res) {
-
+    var req = http.request({port: port, path: '/', agent: agent},
+                           function(res) {
       req.clearTimeout(callback);
 
       res.on('end', function() {
@@ -33,7 +34,7 @@ server.listen(port, function() {
         if (count == 11) {
           server.close();
         }
-      })
+      });
 
       res.resume();
     });
diff --git a/test/parallel/test-http-unix-socket.js b/test/parallel/test-http-unix-socket.js
index 1c13dafd3b..9ec8c8a157 100644
--- a/test/parallel/test-http-unix-socket.js
+++ b/test/parallel/test-http-unix-socket.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var fs = require('fs');
diff --git a/test/parallel/test-http-upgrade-agent.js b/test/parallel/test-http-upgrade-agent.js
index b1655b7d0b..84cfee90d5 100644
--- a/test/parallel/test-http-upgrade-agent.js
+++ b/test/parallel/test-http-upgrade-agent.js
@@ -1,3 +1,4 @@
+'use strict';
 // Verify that the 'upgrade' header causes an 'upgrade' event to be emitted to
 // the HTTP client. This test uses a raw TCP server to better control server
 // behavior.
diff --git a/test/parallel/test-http-upgrade-client.js b/test/parallel/test-http-upgrade-client.js
index 14e0b9ca6a..b8ba033f2e 100644
--- a/test/parallel/test-http-upgrade-client.js
+++ b/test/parallel/test-http-upgrade-client.js
@@ -1,3 +1,4 @@
+'use strict';
 // Verify that the 'upgrade' header causes an 'upgrade' event to be emitted to
 // the HTTP client. This test uses a raw TCP server to better control server
 // behavior.
diff --git a/test/parallel/test-http-upgrade-client2.js b/test/parallel/test-http-upgrade-client2.js
index d2b0f9c215..424d7c811c 100644
--- a/test/parallel/test-http-upgrade-client2.js
+++ b/test/parallel/test-http-upgrade-client2.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
diff --git a/test/parallel/test-http-upgrade-server.js b/test/parallel/test-http-upgrade-server.js
index 84a8de9fed..9b34fe42eb 100644
--- a/test/parallel/test-http-upgrade-server.js
+++ b/test/parallel/test-http-upgrade-server.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-http-upgrade-server2.js b/test/parallel/test-http-upgrade-server2.js
index 7af34c5271..9a22df52c2 100644
--- a/test/parallel/test-http-upgrade-server2.js
+++ b/test/parallel/test-http-upgrade-server2.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
diff --git a/test/parallel/test-http-url.parse-auth-with-header-in-request.js b/test/parallel/test-http-url.parse-auth-with-header-in-request.js
index 9df0f5f6cd..bb5de74ff9 100644
--- a/test/parallel/test-http-url.parse-auth-with-header-in-request.js
+++ b/test/parallel/test-http-url.parse-auth-with-header-in-request.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
diff --git a/test/parallel/test-http-url.parse-auth.js b/test/parallel/test-http-url.parse-auth.js
index 7038efb552..d06c79a9e7 100644
--- a/test/parallel/test-http-url.parse-auth.js
+++ b/test/parallel/test-http-url.parse-auth.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
diff --git a/test/parallel/test-http-url.parse-basic.js b/test/parallel/test-http-url.parse-basic.js
index 234082ad18..efc375e97c 100644
--- a/test/parallel/test-http-url.parse-basic.js
+++ b/test/parallel/test-http-url.parse-basic.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
diff --git a/test/parallel/test-http-url.parse-https.request.js b/test/parallel/test-http-url.parse-https.request.js
index 44287bc6b9..7fb749b069 100644
--- a/test/parallel/test-http-url.parse-https.request.js
+++ b/test/parallel/test-http-url.parse-https.request.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-http-url.parse-only-support-http-https-protocol.js b/test/parallel/test-http-url.parse-only-support-http-https-protocol.js
index c8ae4ffeae..5e49193181 100644
--- a/test/parallel/test-http-url.parse-only-support-http-https-protocol.js
+++ b/test/parallel/test-http-url.parse-only-support-http-https-protocol.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
@@ -8,7 +9,8 @@ assert.throws(function() {
   http.request(url.parse('file:///whatever'));
 }, function(err) {
   if (err instanceof Error) {
-    assert.strictEqual(err.message, 'Protocol "file:" not supported. Expected "http:".');
+    assert.strictEqual(err.message, 'Protocol "file:" not supported.' +
+                       ' Expected "http:".');
     return true;
   }
 });
@@ -17,7 +19,8 @@ assert.throws(function() {
   http.request(url.parse('mailto:asdf@asdf.com'));
 }, function(err) {
   if (err instanceof Error) {
-    assert.strictEqual(err.message, 'Protocol "mailto:" not supported. Expected "http:".');
+    assert.strictEqual(err.message, 'Protocol "mailto:" not supported.' +
+                       ' Expected "http:".');
     return true;
   }
 });
@@ -26,7 +29,8 @@ assert.throws(function() {
   http.request(url.parse('ftp://www.example.com'));
 }, function(err) {
   if (err instanceof Error) {
-    assert.strictEqual(err.message, 'Protocol "ftp:" not supported. Expected "http:".');
+    assert.strictEqual(err.message, 'Protocol "ftp:" not supported.' +
+                       ' Expected "http:".');
     return true;
   }
 });
@@ -35,7 +39,8 @@ assert.throws(function() {
   http.request(url.parse('javascript:alert(\'hello\');'));
 }, function(err) {
   if (err instanceof Error) {
-    assert.strictEqual(err.message, 'Protocol "javascript:" not supported. Expected "http:".');
+    assert.strictEqual(err.message, 'Protocol "javascript:" not supported.' +
+                       ' Expected "http:".');
     return true;
   }
 });
@@ -44,7 +49,8 @@ assert.throws(function() {
   http.request(url.parse('xmpp:isaacschlueter@jabber.org'));
 }, function(err) {
   if (err instanceof Error) {
-    assert.strictEqual(err.message, 'Protocol "xmpp:" not supported. Expected "http:".');
+    assert.strictEqual(err.message, 'Protocol "xmpp:" not supported.' +
+                       ' Expected "http:".');
     return true;
   }
 });
@@ -53,7 +59,8 @@ assert.throws(function() {
   http.request(url.parse('f://some.host/path'));
 }, function(err) {
   if (err instanceof Error) {
-    assert.strictEqual(err.message, 'Protocol "f:" not supported. Expected "http:".');
+    assert.strictEqual(err.message, 'Protocol "f:" not supported.' +
+                       ' Expected "http:".');
     return true;
   }
 });
diff --git a/test/parallel/test-http-url.parse-path.js b/test/parallel/test-http-url.parse-path.js
index 2ff78755c1..087f535fa9 100644
--- a/test/parallel/test-http-url.parse-path.js
+++ b/test/parallel/test-http-url.parse-path.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
diff --git a/test/parallel/test-http-url.parse-post.js b/test/parallel/test-http-url.parse-post.js
index ae6a85da0e..b6a0fdeb25 100644
--- a/test/parallel/test-http-url.parse-post.js
+++ b/test/parallel/test-http-url.parse-post.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
diff --git a/test/parallel/test-http-url.parse-search.js b/test/parallel/test-http-url.parse-search.js
index 16b65d2f94..04e5a72e8f 100644
--- a/test/parallel/test-http-url.parse-search.js
+++ b/test/parallel/test-http-url.parse-search.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
diff --git a/test/parallel/test-http-wget.js b/test/parallel/test-http-wget.js
index b79cf84078..78144ac6fb 100644
--- a/test/parallel/test-http-wget.js
+++ b/test/parallel/test-http-wget.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var net = require('net');
diff --git a/test/parallel/test-http-write-callbacks.js b/test/parallel/test-http-write-callbacks.js
index a666e7ffe1..404396723e 100644
--- a/test/parallel/test-http-write-callbacks.js
+++ b/test/parallel/test-http-write-callbacks.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-http-write-empty-string.js b/test/parallel/test-http-write-empty-string.js
index e0ddbe3c22..50a9f5d509 100644
--- a/test/parallel/test-http-write-empty-string.js
+++ b/test/parallel/test-http-write-empty-string.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-http-write-head.js b/test/parallel/test-http-write-head.js
index acd2a6058d..79a8502c4f 100644
--- a/test/parallel/test-http-write-head.js
+++ b/test/parallel/test-http-write-head.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
diff --git a/test/parallel/test-http-zero-length-write.js b/test/parallel/test-http-zero-length-write.js
index 583b081a52..1ba29ca1c4 100644
--- a/test/parallel/test-http-zero-length-write.js
+++ b/test/parallel/test-http-zero-length-write.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
@@ -22,7 +23,7 @@ function getSrc() {
   var chunks = [ '', 'asdf', '', 'foo', '', 'bar', '' ];
   var interval = setInterval(function() {
     if (paused)
-      return
+      return;
 
     var chunk = chunks.shift();
     if (chunk !== undefined) {
diff --git a/test/parallel/test-http.js b/test/parallel/test-http.js
index c1c55d2d52..daa746cdbe 100644
--- a/test/parallel/test-http.js
+++ b/test/parallel/test-http.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
diff --git a/test/parallel/test-https-agent-servername.js b/test/parallel/test-https-agent-servername.js
index 1647b0ee9a..5af9af9818 100644
--- a/test/parallel/test-https-agent-servername.js
+++ b/test/parallel/test-https-agent-servername.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-https-agent.js b/test/parallel/test-https-agent.js
index 15604f74e5..a26882844e 100644
--- a/test/parallel/test-https-agent.js
+++ b/test/parallel/test-https-agent.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-https-byteswritten.js b/test/parallel/test-https-byteswritten.js
index 5c657b2607..3e50b6f84d 100644
--- a/test/parallel/test-https-byteswritten.js
+++ b/test/parallel/test-https-byteswritten.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var fs = require('fs');
diff --git a/test/parallel/test-https-client-checkServerIdentity.js b/test/parallel/test-https-client-checkServerIdentity.js
index c7bffc9000..8f4aad7f5e 100644
--- a/test/parallel/test-https-client-checkServerIdentity.js
+++ b/test/parallel/test-https-client-checkServerIdentity.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
@@ -17,12 +18,12 @@ var options = {
 
 var reqCount = 0;
 
-var server = https.createServer(options, function (req, res) {
+var server = https.createServer(options, function(req, res) {
   ++reqCount;
   res.writeHead(200);
   res.end();
   req.resume();
-}).listen(common.PORT, function () {
+}).listen(common.PORT, function() {
   authorized();
 });
 
@@ -31,10 +32,10 @@ function authorized() {
     port: common.PORT,
     rejectUnauthorized: true,
     ca: [fs.readFileSync(path.join(common.fixturesDir, 'keys/ca2-cert.pem'))]
-  }, function (res) {
+  }, function(res) {
     assert(false);
   });
-  req.on('error', function (err) {
+  req.on('error', function(err) {
     override();
   });
   req.end();
@@ -45,21 +46,21 @@ function override() {
     port: common.PORT,
     rejectUnauthorized: true,
     ca: [fs.readFileSync(path.join(common.fixturesDir, 'keys/ca2-cert.pem'))],
-    checkServerIdentity: function (host, cert) {
+    checkServerIdentity: function(host, cert) {
       return false;
     }
   };
   options.agent = new https.Agent(options);
-  var req = https.request(options, function (res) {
+  var req = https.request(options, function(res) {
     assert(req.socket.authorized);
     server.close();
   });
-  req.on('error', function (err) {
+  req.on('error', function(err) {
     throw err;
   });
   req.end();
 }
 
-process.on('exit', function () {
+process.on('exit', function() {
   assert.equal(reqCount, 1);
 });
diff --git a/test/parallel/test-https-client-get-url.js b/test/parallel/test-https-client-get-url.js
index 01cea20242..66c11cd2db 100644
--- a/test/parallel/test-https-client-get-url.js
+++ b/test/parallel/test-https-client-get-url.js
@@ -1,3 +1,4 @@
+'use strict';
 // disable strict server certificate validation by the client
 process.env.NODE_TLS_REJECT_UNAUTHORIZED = '0';
 
diff --git a/test/parallel/test-https-client-reject.js b/test/parallel/test-https-client-reject.js
index d3fcae7bef..55c335289d 100644
--- a/test/parallel/test-https-client-reject.js
+++ b/test/parallel/test-https-client-reject.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-https-client-resume.js b/test/parallel/test-https-client-resume.js
index 974db0f597..024c5fa17f 100644
--- a/test/parallel/test-https-client-resume.js
+++ b/test/parallel/test-https-client-resume.js
@@ -1,3 +1,4 @@
+'use strict';
 // Create an ssl server.  First connection, validate that not resume.
 // Cache session and close connection.  Use session on second connection.
 // ASSERT resumption.
@@ -21,7 +22,7 @@ var options = {
 var connections = 0;
 
 // create server
-var server = https.createServer(options, function(res, res) {
+var server = https.createServer(options, function(req, res) {
   res.end('Goodbye');
   connections++;
 });
diff --git a/test/parallel/test-https-connecting-to-http.js b/test/parallel/test-https-connecting-to-http.js
index eb0ea40dc9..64adb77603 100644
--- a/test/parallel/test-https-connecting-to-http.js
+++ b/test/parallel/test-https-connecting-to-http.js
@@ -1,3 +1,4 @@
+'use strict';
 // This tests the situation where you try to connect a https client
 // to an http server. You should get an error and exit.
 var common = require('../common');
diff --git a/test/parallel/test-https-drain.js b/test/parallel/test-https-drain.js
index f2ea3fb4e4..0ce55b0849 100644
--- a/test/parallel/test-https-drain.js
+++ b/test/parallel/test-https-drain.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-https-eof-for-eom.js b/test/parallel/test-https-eof-for-eom.js
index 14e087874e..78a2f3828c 100644
--- a/test/parallel/test-https-eof-for-eom.js
+++ b/test/parallel/test-https-eof-for-eom.js
@@ -1,3 +1,4 @@
+'use strict';
 // I hate HTTP. One way of terminating an HTTP response is to not send
 // a content-length header, not send a transfer-encoding: chunked header,
 // and simply terminate the TCP connection. That is identity
diff --git a/test/parallel/test-https-foafssl.js b/test/parallel/test-https-foafssl.js
index 9d8d34dd79..f9b382ad83 100644
--- a/test/parallel/test-https-foafssl.js
+++ b/test/parallel/test-https-foafssl.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 
 if (!common.opensslCli) {
diff --git a/test/parallel/test-https-host-headers.js b/test/parallel/test-https-host-headers.js
index b8bcb407f1..6a828d4aab 100644
--- a/test/parallel/test-https-host-headers.js
+++ b/test/parallel/test-https-host-headers.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-https-localaddress-bind-error.js b/test/parallel/test-https-localaddress-bind-error.js
index 153233f1a6..21e630dee4 100644
--- a/test/parallel/test-https-localaddress-bind-error.js
+++ b/test/parallel/test-https-localaddress-bind-error.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var fs = require('fs');
@@ -17,7 +18,7 @@ var invalidLocalAddress = '1.2.3.4';
 var gotError = false;
 
 var server = https.createServer(options, function(req, res) {
-  console.log("Connect from: " + req.connection.remoteAddress);
+  console.log('Connect from: ' + req.connection.remoteAddress);
 
   req.on('end', function() {
     res.writeHead(200, { 'Content-Type': 'text/plain' });
@@ -26,7 +27,7 @@ var server = https.createServer(options, function(req, res) {
   req.resume();
 });
 
-server.listen(common.PORT, "127.0.0.1", function() {
+server.listen(common.PORT, '127.0.0.1', function() {
   var req = https.request({
     host: 'localhost',
     port: common.PORT,
diff --git a/test/parallel/test-https-localaddress.js b/test/parallel/test-https-localaddress.js
index b3b1d2cb94..0f3241c70b 100644
--- a/test/parallel/test-https-localaddress.js
+++ b/test/parallel/test-https-localaddress.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common'),
     fs = require('fs'),
     assert = require('assert');
@@ -18,8 +19,8 @@ var options = {
   cert: fs.readFileSync(common.fixturesDir + '/keys/agent1-cert.pem')
 };
 
-var server = https.createServer(options, function (req, res) {
-  console.log("Connect from: " + req.connection.remoteAddress);
+var server = https.createServer(options, function(req, res) {
+  console.log('Connect from: ' + req.connection.remoteAddress);
   assert.equal('127.0.0.2', req.connection.remoteAddress);
 
   req.on('end', function() {
@@ -29,7 +30,7 @@ var server = https.createServer(options, function (req, res) {
   req.resume();
 });
 
-server.listen(common.PORT, "127.0.0.1", function() {
+server.listen(common.PORT, '127.0.0.1', function() {
   var options = {
     host: 'localhost',
     port: common.PORT,
diff --git a/test/parallel/test-https-pfx.js b/test/parallel/test-https-pfx.js
index 30dbea6ad0..f396858833 100644
--- a/test/parallel/test-https-pfx.js
+++ b/test/parallel/test-https-pfx.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var fs = require('fs');
@@ -31,8 +32,8 @@ server.listen(options.port, options.host, function() {
   var data = '';
 
   https.get(options, function(res) {
-    res.on('data', function(data_) { data += data_ });
-    res.on('end', function() { server.close() });
+    res.on('data', function(data_) { data += data_; });
+    res.on('end', function() { server.close(); });
   });
 
   process.on('exit', function() {
diff --git a/test/parallel/test-https-req-split.js b/test/parallel/test-https-req-split.js
index 210363e430..4fd48eb161 100644
--- a/test/parallel/test-https-req-split.js
+++ b/test/parallel/test-https-req-split.js
@@ -1,3 +1,4 @@
+'use strict';
 // disable strict server certificate validation by the client
 process.env.NODE_TLS_REJECT_UNAUTHORIZED = '0';
 
diff --git a/test/parallel/test-https-set-timeout-server.js b/test/parallel/test-https-set-timeout-server.js
index a78725eefa..c10878110c 100644
--- a/test/parallel/test-https-set-timeout-server.js
+++ b/test/parallel/test-https-set-timeout-server.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
@@ -28,8 +29,9 @@ function run() {
   if (fn) {
     console.log('# %s', fn.name);
     fn(run);
-  } else
+  } else {
     console.log('ok');
+  }
 }
 
 test(function serverTimeout(cb) {
diff --git a/test/parallel/test-https-simple.js b/test/parallel/test-https-simple.js
index 840838b83e..c2b93fdef8 100644
--- a/test/parallel/test-https-simple.js
+++ b/test/parallel/test-https-simple.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-https-socket-options.js b/test/parallel/test-https-socket-options.js
index eef94765a5..52e46bd20b 100644
--- a/test/parallel/test-https-socket-options.js
+++ b/test/parallel/test-https-socket-options.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
@@ -43,7 +44,8 @@ server_http.listen(common.PORT, function() {
   req.end();
 });
 
-// Then try https server (requires functions to be mirroed in tls.js's CryptoStream)
+// Then try https server (requires functions to be
+// mirroed in tls.js's CryptoStream)
 
 var server_https = https.createServer(options, function(req, res) {
   console.log('got HTTPS request');
@@ -51,7 +53,7 @@ var server_https = https.createServer(options, function(req, res) {
   res.end(body);
 });
 
-server_https.listen(common.PORT+1, function() {
+server_https.listen(common.PORT + 1, function() {
   var req = https.request({
     port: common.PORT + 1,
     rejectUnauthorized: false
diff --git a/test/parallel/test-https-strict.js b/test/parallel/test-https-strict.js
index b2620fa88b..7ab5c3ee82 100644
--- a/test/parallel/test-https-strict.js
+++ b/test/parallel/test-https-strict.js
@@ -1,3 +1,4 @@
+'use strict';
 // disable strict server certificate validation by the client
 process.env.NODE_TLS_REJECT_UNAUTHORIZED = '0';
 
@@ -100,7 +101,7 @@ function listening() {
     if (listenWait === 0) {
       allListening();
     }
-  }
+  };
 }
 
 function makeReq(path, port, error, host, ca) {
@@ -127,7 +128,7 @@ function makeReq(path, port, error, host, ca) {
   }
 
   if (host) {
-    options.headers = { host: host }
+    options.headers = { host: host };
   }
   var req = https.get(options);
   expectResponseCount++;
@@ -136,7 +137,7 @@ function makeReq(path, port, error, host, ca) {
       : port === port3 ? server3
       : null;
 
-  if (!server) throw new Error('invalid port: '+port);
+  if (!server) throw new Error('invalid port: ' + port);
   server.expectCount++;
 
   req.on('response', function(res) {
@@ -150,7 +151,7 @@ function makeReq(path, port, error, host, ca) {
       server3.close();
     }
     res.resume();
-  })
+  });
 }
 
 function allListening() {
diff --git a/test/parallel/test-https-timeout-server-2.js b/test/parallel/test-https-timeout-server-2.js
index 0a074da074..5da7c83326 100644
--- a/test/parallel/test-https-timeout-server-2.js
+++ b/test/parallel/test-https-timeout-server-2.js
@@ -1,3 +1,4 @@
+'use strict';
 
 var common = require('../common');
 var assert = require('assert');
diff --git a/test/parallel/test-https-timeout-server.js b/test/parallel/test-https-timeout-server.js
index a24779ac76..2707c30d18 100644
--- a/test/parallel/test-https-timeout-server.js
+++ b/test/parallel/test-https-timeout-server.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-https-timeout.js b/test/parallel/test-https-timeout.js
index c03cb013d5..f6f1375180 100644
--- a/test/parallel/test-https-timeout.js
+++ b/test/parallel/test-https-timeout.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-https-truncate.js b/test/parallel/test-https-truncate.js
index 6a58bfe771..aba1be809a 100644
--- a/test/parallel/test-https-truncate.js
+++ b/test/parallel/test-https-truncate.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-internal-modules-expose.js b/test/parallel/test-internal-modules-expose.js
index 4ea79dbbf7..4ece1d0c7b 100644
--- a/test/parallel/test-internal-modules-expose.js
+++ b/test/parallel/test-internal-modules-expose.js
@@ -1,3 +1,4 @@
+'use strict';
 // Flags: --expose_internals
 
 var common = require('../common');
diff --git a/test/parallel/test-internal-modules.js b/test/parallel/test-internal-modules.js
index ebba2500d5..011b6f7132 100644
--- a/test/parallel/test-internal-modules.js
+++ b/test/parallel/test-internal-modules.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-intl.js b/test/parallel/test-intl.js
index 390155fc26..8701d90f7c 100644
--- a/test/parallel/test-intl.js
+++ b/test/parallel/test-intl.js
@@ -1,10 +1,11 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
 // does node think that i18n was enabled?
 var enablei18n = process.config.variables.v8_enable_i18n_support;
 if (enablei18n === undefined) {
-    enablei18n = false;
+  enablei18n = false;
 }
 
 // is the Intl object present?
diff --git a/test/parallel/test-listen-fd-cluster.js b/test/parallel/test-listen-fd-cluster.js
index 4b60a18161..c3ba42f315 100644
--- a/test/parallel/test-listen-fd-cluster.js
+++ b/test/parallel/test-listen-fd-cluster.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
@@ -43,7 +44,7 @@ function test() {
       server: 'localhost',
       port: PORT,
       path: '/',
-    }).on('response', function (res) {
+    }).on('response', function(res) {
       var s = '';
       res.on('data', function(c) {
         s += c.toString();
@@ -58,7 +59,7 @@ function test() {
         assert.equal(res.statusCode, 200);
         console.log('ok');
       });
-    })
+    });
   }
 }
 
diff --git a/test/parallel/test-listen-fd-detached-inherit.js b/test/parallel/test-listen-fd-detached-inherit.js
index 329eee5f81..7e8f7fbaf8 100644
--- a/test/parallel/test-listen-fd-detached-inherit.js
+++ b/test/parallel/test-listen-fd-detached-inherit.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
@@ -39,7 +40,7 @@ function test() {
       server: 'localhost',
       port: PORT,
       path: '/',
-    }).on('response', function (res) {
+    }).on('response', function(res) {
       var s = '';
       res.on('data', function(c) {
         s += c.toString();
@@ -55,7 +56,7 @@ function test() {
         assert.equal(s, 'hello from child\n');
         assert.equal(res.statusCode, 200);
       });
-    })
+    });
   }
 }
 
diff --git a/test/parallel/test-listen-fd-detached.js b/test/parallel/test-listen-fd-detached.js
index a014fa1ee4..fceedfd252 100644
--- a/test/parallel/test-listen-fd-detached.js
+++ b/test/parallel/test-listen-fd-detached.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
@@ -39,7 +40,7 @@ function test() {
       server: 'localhost',
       port: PORT,
       path: '/',
-    }).on('response', function (res) {
+    }).on('response', function(res) {
       var s = '';
       res.on('data', function(c) {
         s += c.toString();
@@ -55,7 +56,7 @@ function test() {
         assert.equal(s, 'hello from child\n');
         assert.equal(res.statusCode, 200);
       });
-    })
+    });
   }
 }
 
diff --git a/test/parallel/test-listen-fd-ebadf.js b/test/parallel/test-listen-fd-ebadf.js
index 628ece68a3..db905dfa35 100644
--- a/test/parallel/test-listen-fd-ebadf.js
+++ b/test/parallel/test-listen-fd-ebadf.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var net = require('net');
diff --git a/test/parallel/test-listen-fd-server.js b/test/parallel/test-listen-fd-server.js
index 39f15014a1..b922c25ee1 100644
--- a/test/parallel/test-listen-fd-server.js
+++ b/test/parallel/test-listen-fd-server.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
@@ -39,7 +40,7 @@ function test() {
       server: 'localhost',
       port: PORT,
       path: '/',
-    }).on('response', function (res) {
+    }).on('response', function(res) {
       var s = '';
       res.on('data', function(c) {
         s += c.toString();
@@ -55,7 +56,7 @@ function test() {
         assert.equal(s, 'hello from child\n');
         assert.equal(res.statusCode, 200);
       });
-    })
+    });
   }
 }
 
diff --git a/test/parallel/test-memory-usage.js b/test/parallel/test-memory-usage.js
index 4c1b67c83a..09dc4f820a 100644
--- a/test/parallel/test-memory-usage.js
+++ b/test/parallel/test-memory-usage.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-microtask-queue-integration-domain.js b/test/parallel/test-microtask-queue-integration-domain.js
index 7e8b9a1250..7a4ad77cd3 100644
--- a/test/parallel/test-microtask-queue-integration-domain.js
+++ b/test/parallel/test-microtask-queue-integration-domain.js
@@ -1,12 +1,13 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var domain = require('domain');
 
 var implementations = [
-  function (fn) {
+  function(fn) {
     Promise.resolve().then(fn);
   },
-  function (fn) {
+  function(fn) {
     var obj = {};
 
     Object.observe(obj, fn);
@@ -18,20 +19,20 @@ var implementations = [
 var expected = 0;
 var done = 0;
 
-process.on('exit', function () {
+process.on('exit', function() {
   assert.equal(done, expected);
 });
 
-function test (scheduleMicrotask) {
+function test(scheduleMicrotask) {
   var nextTickCalled = false;
   expected++;
 
-  scheduleMicrotask(function () {
-    process.nextTick(function () {
+  scheduleMicrotask(function() {
+    process.nextTick(function() {
       nextTickCalled = true;
     });
 
-    setTimeout(function () {
+    setTimeout(function() {
       assert(nextTickCalled);
       done++;
     }, 0);
@@ -42,8 +43,8 @@ function test (scheduleMicrotask) {
 implementations.forEach(test);
 
 // tick callback case
-setTimeout(function () {
-  implementations.forEach(function (impl) {
+setTimeout(function() {
+  implementations.forEach(function(impl) {
     process.nextTick(test.bind(null, impl));
   });
 }, 0);
diff --git a/test/parallel/test-microtask-queue-integration.js b/test/parallel/test-microtask-queue-integration.js
index 3f68d73675..37de5ee33b 100644
--- a/test/parallel/test-microtask-queue-integration.js
+++ b/test/parallel/test-microtask-queue-integration.js
@@ -1,11 +1,12 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
 var implementations = [
-  function (fn) {
+  function(fn) {
     Promise.resolve().then(fn);
   },
-  function (fn) {
+  function(fn) {
     var obj = {};
 
     Object.observe(obj, fn);
@@ -17,20 +18,20 @@ var implementations = [
 var expected = 0;
 var done = 0;
 
-process.on('exit', function () {
+process.on('exit', function() {
   assert.equal(done, expected);
 });
 
-function test (scheduleMicrotask) {
+function test(scheduleMicrotask) {
   var nextTickCalled = false;
   expected++;
 
-  scheduleMicrotask(function () {
-    process.nextTick(function () {
+  scheduleMicrotask(function() {
+    process.nextTick(function() {
       nextTickCalled = true;
     });
 
-    setTimeout(function () {
+    setTimeout(function() {
       assert(nextTickCalled);
       done++;
     }, 0);
@@ -41,8 +42,8 @@ function test (scheduleMicrotask) {
 implementations.forEach(test);
 
 // tick callback case
-setTimeout(function () {
-  implementations.forEach(function (impl) {
+setTimeout(function() {
+  implementations.forEach(function(impl) {
     process.nextTick(test.bind(null, impl));
   });
 }, 0);
diff --git a/test/parallel/test-microtask-queue-run-domain.js b/test/parallel/test-microtask-queue-run-domain.js
index 8627e90eff..77534920ff 100644
--- a/test/parallel/test-microtask-queue-run-domain.js
+++ b/test/parallel/test-microtask-queue-run-domain.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var domain = require('domain');
diff --git a/test/parallel/test-microtask-queue-run-immediate-domain.js b/test/parallel/test-microtask-queue-run-immediate-domain.js
index aa58b7fcb1..2dea0a76cc 100644
--- a/test/parallel/test-microtask-queue-run-immediate-domain.js
+++ b/test/parallel/test-microtask-queue-run-immediate-domain.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var domain = require('domain');
diff --git a/test/parallel/test-microtask-queue-run-immediate.js b/test/parallel/test-microtask-queue-run-immediate.js
index fbce91e517..cfd9cd3659 100644
--- a/test/parallel/test-microtask-queue-run-immediate.js
+++ b/test/parallel/test-microtask-queue-run-immediate.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-microtask-queue-run.js b/test/parallel/test-microtask-queue-run.js
index 73ba76efc4..ca758546c2 100644
--- a/test/parallel/test-microtask-queue-run.js
+++ b/test/parallel/test-microtask-queue-run.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-module-globalpaths-nodepath.js b/test/parallel/test-module-globalpaths-nodepath.js
index 6cfa17933c..d81f5994f2 100644
--- a/test/parallel/test-module-globalpaths-nodepath.js
+++ b/test/parallel/test-module-globalpaths-nodepath.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-module-loading-error.js b/test/parallel/test-module-loading-error.js
index 23eac7da6f..f33605d44e 100644
--- a/test/parallel/test-module-loading-error.js
+++ b/test/parallel/test-module-loading-error.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-module-nodemodulepaths.js b/test/parallel/test-module-nodemodulepaths.js
index e5e07dd40e..b1f04d41d0 100644
--- a/test/parallel/test-module-nodemodulepaths.js
+++ b/test/parallel/test-module-nodemodulepaths.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
@@ -9,10 +10,10 @@ var file, delimiter, paths;
 
 if (isWindows) {
   file = 'C:\\Users\\Rocko Artischocko\\node_stuff\\foo';
-  delimiter = '\\'
+  delimiter = '\\';
 } else {
   file = '/usr/test/lib/node_modules/npm/foo';
-  delimiter = '/'
+  delimiter = '/';
 }
 
 paths = module._nodeModulePaths(file);
diff --git a/test/parallel/test-net-after-close.js b/test/parallel/test-net-after-close.js
index 99b213e087..2234171116 100644
--- a/test/parallel/test-net-after-close.js
+++ b/test/parallel/test-net-after-close.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var net = require('net');
diff --git a/test/parallel/test-net-better-error-messages-listen-path.js b/test/parallel/test-net-better-error-messages-listen-path.js
index fcc3062a81..8a7e0220b3 100644
--- a/test/parallel/test-net-better-error-messages-listen-path.js
+++ b/test/parallel/test-net-better-error-messages-listen-path.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var net = require('net');
@@ -5,5 +6,5 @@ var fp = '/blah/fadfa';
 var server = net.createServer(assert.fail);
 server.listen(fp, assert.fail);
 server.on('error', common.mustCall(function(e) {
-  assert.equal(e.address, fp)
+  assert.equal(e.address, fp);
 }));
diff --git a/test/parallel/test-net-better-error-messages-listen.js b/test/parallel/test-net-better-error-messages-listen.js
index 9c7766bd4f..7e5fad925a 100644
--- a/test/parallel/test-net-better-error-messages-listen.js
+++ b/test/parallel/test-net-better-error-messages-listen.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var net = require('net');
diff --git a/test/parallel/test-net-better-error-messages-path.js b/test/parallel/test-net-better-error-messages-path.js
index dea4a10459..06cfecbd7c 100644
--- a/test/parallel/test-net-better-error-messages-path.js
+++ b/test/parallel/test-net-better-error-messages-path.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var net = require('net');
 var assert = require('assert');
diff --git a/test/parallel/test-net-better-error-messages-port-hostname.js b/test/parallel/test-net-better-error-messages-port-hostname.js
index 3817dbb92f..9335f6b07a 100644
--- a/test/parallel/test-net-better-error-messages-port-hostname.js
+++ b/test/parallel/test-net-better-error-messages-port-hostname.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var net = require('net');
 var assert = require('assert');
diff --git a/test/parallel/test-net-better-error-messages-port.js b/test/parallel/test-net-better-error-messages-port.js
index a8c16a7038..0f90089c05 100644
--- a/test/parallel/test-net-better-error-messages-port.js
+++ b/test/parallel/test-net-better-error-messages-port.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var net = require('net');
 var assert = require('assert');
diff --git a/test/parallel/test-net-binary.js b/test/parallel/test-net-binary.js
index ae1a82ae89..cf29cfe63b 100644
--- a/test/parallel/test-net-binary.js
+++ b/test/parallel/test-net-binary.js
@@ -1,3 +1,4 @@
+/* eslint-disable strict */
 var common = require('../common');
 var assert = require('assert');
 var net = require('net');
diff --git a/test/parallel/test-net-bind-twice.js b/test/parallel/test-net-bind-twice.js
index ca75fb16fe..ca4f554d30 100644
--- a/test/parallel/test-net-bind-twice.js
+++ b/test/parallel/test-net-bind-twice.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var net = require('net');
diff --git a/test/parallel/test-net-buffersize.js b/test/parallel/test-net-buffersize.js
index e8618beb7a..fcf0331c4e 100644
--- a/test/parallel/test-net-buffersize.js
+++ b/test/parallel/test-net-buffersize.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var net = require('net');
diff --git a/test/parallel/test-net-bytes-stats.js b/test/parallel/test-net-bytes-stats.js
index 562e9b422c..4e0a2e4001 100644
--- a/test/parallel/test-net-bytes-stats.js
+++ b/test/parallel/test-net-bytes-stats.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var net = require('net');
diff --git a/test/parallel/test-net-can-reset-timeout.js b/test/parallel/test-net-can-reset-timeout.js
index 3febac8a30..9fd7da4bb4 100644
--- a/test/parallel/test-net-can-reset-timeout.js
+++ b/test/parallel/test-net-can-reset-timeout.js
@@ -1,3 +1,4 @@
+'use strict';
 var net = require('net');
 var common = require('../common');
 var assert = require('assert');
diff --git a/test/parallel/test-net-connect-buffer.js b/test/parallel/test-net-connect-buffer.js
index 74697932b0..304401f56e 100644
--- a/test/parallel/test-net-connect-buffer.js
+++ b/test/parallel/test-net-connect-buffer.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var net = require('net');
diff --git a/test/parallel/test-net-connect-handle-econnrefused.js b/test/parallel/test-net-connect-handle-econnrefused.js
index 77849b9b57..0a8ce08168 100644
--- a/test/parallel/test-net-connect-handle-econnrefused.js
+++ b/test/parallel/test-net-connect-handle-econnrefused.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var net = require('net');
 var assert = require('assert');
diff --git a/test/parallel/test-net-connect-immediate-finish.js b/test/parallel/test-net-connect-immediate-finish.js
index 1fc908be1f..086cf91042 100644
--- a/test/parallel/test-net-connect-immediate-finish.js
+++ b/test/parallel/test-net-connect-immediate-finish.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var net = require('net');
diff --git a/test/parallel/test-net-connect-options-ipv6.js b/test/parallel/test-net-connect-options-ipv6.js
index 35af5124a4..0ac1367ede 100644
--- a/test/parallel/test-net-connect-options-ipv6.js
+++ b/test/parallel/test-net-connect-options-ipv6.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var net = require('net');
diff --git a/test/parallel/test-net-connect-options.js b/test/parallel/test-net-connect-options.js
index fba35eab1c..ac8bbcefc0 100644
--- a/test/parallel/test-net-connect-options.js
+++ b/test/parallel/test-net-connect-options.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var net = require('net');
diff --git a/test/parallel/test-net-connect-paused-connection.js b/test/parallel/test-net-connect-paused-connection.js
index 06e51f843f..60af9e44fb 100644
--- a/test/parallel/test-net-connect-paused-connection.js
+++ b/test/parallel/test-net-connect-paused-connection.js
@@ -1,3 +1,4 @@
+'use strict';
 var assert = require('assert');
 var common = require('../common');
 
diff --git a/test/parallel/test-net-create-connection.js b/test/parallel/test-net-create-connection.js
index 9f468763c0..c245ddc2ae 100644
--- a/test/parallel/test-net-create-connection.js
+++ b/test/parallel/test-net-create-connection.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var net = require('net');
@@ -22,7 +23,7 @@ server.listen(tcpPort, 'localhost', function() {
   function fail(opts, errtype, msg) {
     assert.throws(function() {
       var client = net.createConnection(opts, cb);
-    }, function (err) {
+    }, function(err) {
       return err instanceof errtype && msg === err.message;
     });
   }
diff --git a/test/parallel/test-net-dns-custom-lookup.js b/test/parallel/test-net-dns-custom-lookup.js
index 05ca09cc66..008e831c61 100644
--- a/test/parallel/test-net-dns-custom-lookup.js
+++ b/test/parallel/test-net-dns-custom-lookup.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var net = require('net');
diff --git a/test/parallel/test-net-dns-error.js b/test/parallel/test-net-dns-error.js
index 18f6fe259b..17f251cec3 100644
--- a/test/parallel/test-net-dns-error.js
+++ b/test/parallel/test-net-dns-error.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-net-dns-lookup-skip.js b/test/parallel/test-net-dns-lookup-skip.js
index 7a129b9795..1083ed9fc0 100644
--- a/test/parallel/test-net-dns-lookup-skip.js
+++ b/test/parallel/test-net-dns-lookup-skip.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var net = require('net');
diff --git a/test/parallel/test-net-dns-lookup.js b/test/parallel/test-net-dns-lookup.js
index 92ba794d74..2bcff9143c 100644
--- a/test/parallel/test-net-dns-lookup.js
+++ b/test/parallel/test-net-dns-lookup.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var net = require('net');
diff --git a/test/parallel/test-net-during-close.js b/test/parallel/test-net-during-close.js
index b2f139cfa0..a2fd424e0e 100644
--- a/test/parallel/test-net-during-close.js
+++ b/test/parallel/test-net-during-close.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var net = require('net');
diff --git a/test/parallel/test-net-eaddrinuse.js b/test/parallel/test-net-eaddrinuse.js
index 209e4909c4..c1797b7369 100644
--- a/test/parallel/test-net-eaddrinuse.js
+++ b/test/parallel/test-net-eaddrinuse.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var net = require('net');
diff --git a/test/parallel/test-net-end-without-connect.js b/test/parallel/test-net-end-without-connect.js
index 6ccf2b0280..2911591f9f 100644
--- a/test/parallel/test-net-end-without-connect.js
+++ b/test/parallel/test-net-end-without-connect.js
@@ -1,5 +1,6 @@
+'use strict';
 var common = require('../common');
 var net = require('net');
 
-var sock = new net.Socket;
+var sock = new net.Socket();
 sock.end();  // Should not throw.
diff --git a/test/parallel/test-net-error-twice.js b/test/parallel/test-net-error-twice.js
index 1620bb8ee5..af92ca9320 100644
--- a/test/parallel/test-net-error-twice.js
+++ b/test/parallel/test-net-error-twice.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var net = require('net');
@@ -10,18 +11,18 @@ var errs = [];
 
 var srv = net.createServer(function onConnection(conn) {
   conn.write(buf);
-  conn.on('error', function (err) {
+  conn.on('error', function(err) {
     errs.push(err);
     if (errs.length > 1 && errs[0] === errs[1])
-      assert(false, "We should not be emitting the same error twice");
+      assert(false, 'We should not be emitting the same error twice');
   });
   conn.on('close', function() {
     srv.unref();
   });
-}).listen(common.PORT, function () {
+}).listen(common.PORT, function() {
   var client = net.connect({ port: common.PORT });
 
-  client.on('connect', function () {
+  client.on('connect', function() {
     client.destroy();
   });
 });
diff --git a/test/parallel/test-net-isip.js b/test/parallel/test-net-isip.js
index 1947810b82..96177122b7 100644
--- a/test/parallel/test-net-isip.js
+++ b/test/parallel/test-net-isip.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var net = require('net');
@@ -29,7 +30,7 @@ assert.equal(net.isIP('::'), 6);
 assert.equal(net.isIP('0000:0000:0000:0000:0000:0000:12345:0000'), 0);
 assert.equal(net.isIP('0'), 0);
 assert.equal(net.isIP(), 0);
-assert.equal(net.isIP(""), 0);
+assert.equal(net.isIP(''), 0);
 
 assert.equal(net.isIPv4('127.0.0.1'), true);
 assert.equal(net.isIPv4('example.com'), false);
diff --git a/test/parallel/test-net-keepalive.js b/test/parallel/test-net-keepalive.js
index f5299c9eb3..3c339f7aba 100644
--- a/test/parallel/test-net-keepalive.js
+++ b/test/parallel/test-net-keepalive.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var net = require('net');
diff --git a/test/parallel/test-net-large-string.js b/test/parallel/test-net-large-string.js
index 318f25a1c9..387f3f4f8c 100644
--- a/test/parallel/test-net-large-string.js
+++ b/test/parallel/test-net-large-string.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var net = require('net');
diff --git a/test/parallel/test-net-listen-close-server-callback-is-not-function.js b/test/parallel/test-net-listen-close-server-callback-is-not-function.js
index f4eff77940..7450cb16fc 100644
--- a/test/parallel/test-net-listen-close-server-callback-is-not-function.js
+++ b/test/parallel/test-net-listen-close-server-callback-is-not-function.js
@@ -1,3 +1,4 @@
+'use strict';
 var assert = require('assert');
 var common = require('../common');
 var net = require('net');
diff --git a/test/parallel/test-net-listen-close-server.js b/test/parallel/test-net-listen-close-server.js
index e3a73e6ae5..9c4dbcfe2e 100644
--- a/test/parallel/test-net-listen-close-server.js
+++ b/test/parallel/test-net-listen-close-server.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var net = require('net');
diff --git a/test/parallel/test-net-listen-error.js b/test/parallel/test-net-listen-error.js
index 0ed2421fdf..b0d8aac8f8 100644
--- a/test/parallel/test-net-listen-error.js
+++ b/test/parallel/test-net-listen-error.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var net = require('net');
diff --git a/test/parallel/test-net-listen-fd0.js b/test/parallel/test-net-listen-fd0.js
index 7cfd49dbdd..bf437268c9 100644
--- a/test/parallel/test-net-listen-fd0.js
+++ b/test/parallel/test-net-listen-fd0.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var net = require('net');
@@ -14,6 +15,6 @@ net.createServer(assert.fail).listen({fd:0}).on('error', function(e) {
     case 'EINVAL':
     case 'ENOTSOCK':
       gotError = e;
-      break
+      break;
   }
 });
diff --git a/test/parallel/test-net-listen-port-option.js b/test/parallel/test-net-listen-port-option.js
index 1b9938f7c7..d1eddb6707 100644
--- a/test/parallel/test-net-listen-port-option.js
+++ b/test/parallel/test-net-listen-port-option.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var net = require('net');
diff --git a/test/parallel/test-net-listen-shared-ports.js b/test/parallel/test-net-listen-shared-ports.js
index 3139dc7ac2..2062dd0ce1 100644
--- a/test/parallel/test-net-listen-shared-ports.js
+++ b/test/parallel/test-net-listen-shared-ports.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var cluster = require('cluster');
diff --git a/test/parallel/test-net-local-address-port.js b/test/parallel/test-net-local-address-port.js
index 0bbfee8021..aa28d180da 100644
--- a/test/parallel/test-net-local-address-port.js
+++ b/test/parallel/test-net-local-address-port.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var net = require('net');
diff --git a/test/parallel/test-net-localerror.js b/test/parallel/test-net-localerror.js
index c2ef96165a..45ec1fc909 100644
--- a/test/parallel/test-net-localerror.js
+++ b/test/parallel/test-net-localerror.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var net = require('net');
diff --git a/test/parallel/test-net-pause-resume-connecting.js b/test/parallel/test-net-pause-resume-connecting.js
index b692f35085..fb3b66c8cf 100644
--- a/test/parallel/test-net-pause-resume-connecting.js
+++ b/test/parallel/test-net-pause-resume-connecting.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common'),
     assert = require('assert'),
     net = require('net');
diff --git a/test/parallel/test-net-pingpong.js b/test/parallel/test-net-pingpong.js
index 7a05591caf..9a0c8af5b0 100644
--- a/test/parallel/test-net-pingpong.js
+++ b/test/parallel/test-net-pingpong.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-net-pipe-connect-errors.js b/test/parallel/test-net-pipe-connect-errors.js
index 5150c6de81..a831b10712 100644
--- a/test/parallel/test-net-pipe-connect-errors.js
+++ b/test/parallel/test-net-pipe-connect-errors.js
@@ -1,3 +1,4 @@
+'use strict';
 var fs = require('fs');
 var net = require('net');
 var path = require('path');
diff --git a/test/parallel/test-net-reconnect-error.js b/test/parallel/test-net-reconnect-error.js
index 541a481fe1..ed889829ec 100644
--- a/test/parallel/test-net-reconnect-error.js
+++ b/test/parallel/test-net-reconnect-error.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var net = require('net');
 var assert = require('assert');
diff --git a/test/parallel/test-net-reconnect.js b/test/parallel/test-net-reconnect.js
index d65efac998..b2e8f6ea8b 100644
--- a/test/parallel/test-net-reconnect.js
+++ b/test/parallel/test-net-reconnect.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-net-remote-address-port.js b/test/parallel/test-net-remote-address-port.js
index 2f8c673b57..11d753ea46 100644
--- a/test/parallel/test-net-remote-address-port.js
+++ b/test/parallel/test-net-remote-address-port.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-net-server-close.js b/test/parallel/test-net-server-close.js
index 4101baf166..446b835a4c 100644
--- a/test/parallel/test-net-server-close.js
+++ b/test/parallel/test-net-server-close.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var net = require('net');
@@ -23,7 +24,7 @@ var server = net.createServer(function(c) {
 
   if (sockets.length === 2) {
     server.close();
-    sockets.forEach(function(c) { c.destroy() });
+    sockets.forEach(function(c) { c.destroy(); });
   }
 });
 
diff --git a/test/parallel/test-net-server-connections.js b/test/parallel/test-net-server-connections.js
index 76e9c2af1c..138a78defb 100644
--- a/test/parallel/test-net-server-connections.js
+++ b/test/parallel/test-net-server-connections.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-net-server-listen-remove-callback.js b/test/parallel/test-net-server-listen-remove-callback.js
index d9a5a8bdec..a7d54081a6 100644
--- a/test/parallel/test-net-server-listen-remove-callback.js
+++ b/test/parallel/test-net-server-listen-remove-callback.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var net = require('net');
diff --git a/test/parallel/test-net-server-max-connections.js b/test/parallel/test-net-server-max-connections.js
index ea89bd9d9b..3b425ba335 100644
--- a/test/parallel/test-net-server-max-connections.js
+++ b/test/parallel/test-net-server-max-connections.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-net-server-pause-on-connect.js b/test/parallel/test-net-server-pause-on-connect.js
index 0f47565f00..db57114302 100644
--- a/test/parallel/test-net-server-pause-on-connect.js
+++ b/test/parallel/test-net-server-pause-on-connect.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var net = require('net');
diff --git a/test/parallel/test-net-server-try-ports.js b/test/parallel/test-net-server-try-ports.js
index 698cbcfa23..65cd5887a1 100644
--- a/test/parallel/test-net-server-try-ports.js
+++ b/test/parallel/test-net-server-try-ports.js
@@ -1,3 +1,4 @@
+'use strict';
 // This tests binds to one port, then attempts to start a server on that
 // port. It should be EADDRINUSE but be able to then bind to another port.
 var common = require('../common');
diff --git a/test/parallel/test-net-server-unref-persistent.js b/test/parallel/test-net-server-unref-persistent.js
index 3a5092b92e..a071b625ef 100644
--- a/test/parallel/test-net-server-unref-persistent.js
+++ b/test/parallel/test-net-server-unref-persistent.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var net = require('net');
diff --git a/test/parallel/test-net-server-unref.js b/test/parallel/test-net-server-unref.js
index 2365864d6b..98e95d6f10 100644
--- a/test/parallel/test-net-server-unref.js
+++ b/test/parallel/test-net-server-unref.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-net-settimeout.js b/test/parallel/test-net-settimeout.js
index a11c4a12ed..a1172b92e1 100644
--- a/test/parallel/test-net-settimeout.js
+++ b/test/parallel/test-net-settimeout.js
@@ -1,3 +1,4 @@
+'use strict';
 // This example sets a timeout then immediately attempts to disable the timeout
 // https://github.com/joyent/node/pull/2245
 
diff --git a/test/parallel/test-net-socket-destroy-twice.js b/test/parallel/test-net-socket-destroy-twice.js
index 2782048bd5..f23a70abb2 100644
--- a/test/parallel/test-net-socket-destroy-twice.js
+++ b/test/parallel/test-net-socket-destroy-twice.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var net = require('net');
diff --git a/test/parallel/test-net-socket-timeout-unref.js b/test/parallel/test-net-socket-timeout-unref.js
index 16bdcecaf1..c7e651afef 100644
--- a/test/parallel/test-net-socket-timeout-unref.js
+++ b/test/parallel/test-net-socket-timeout-unref.js
@@ -1,8 +1,9 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var net = require('net');
 
-var server = net.createServer(function (c) {
+var server = net.createServer(function(c) {
   c.write('hello');
   c.unref();
 });
@@ -11,9 +12,9 @@ server.unref();
 
 var timedout = false;
 
-[8, 5, 3, 6, 2, 4].forEach(function (T) {
+[8, 5, 3, 6, 2, 4].forEach(function(T) {
   var socket = net.createConnection(common.PORT, 'localhost');
-  socket.setTimeout(T * 1000, function () {
+  socket.setTimeout(T * 1000, function() {
     console.log(process._getActiveHandles());
     timedout = true;
     socket.destroy();
@@ -21,6 +22,7 @@ var timedout = false;
   socket.unref();
 });
 
-process.on('exit', function () {
-  assert.strictEqual(timedout, false, 'Socket timeout should not hold loop open');
+process.on('exit', function() {
+  assert.strictEqual(timedout, false,
+                     'Socket timeout should not hold loop open');
 });
diff --git a/test/parallel/test-net-socket-timeout.js b/test/parallel/test-net-socket-timeout.js
index f403829876..5ab11909b4 100644
--- a/test/parallel/test-net-socket-timeout.js
+++ b/test/parallel/test-net-socket-timeout.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var net = require('net');
 var assert = require('assert');
diff --git a/test/parallel/test-net-stream.js b/test/parallel/test-net-stream.js
index 8f7efd45f6..151b1b178f 100644
--- a/test/parallel/test-net-stream.js
+++ b/test/parallel/test-net-stream.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
@@ -29,7 +30,7 @@ var server = net.createServer(function(socket) {
     socket.destroy();
   }).on('close', function() {
     server.close();
-  })
+  });
 
   for (var i = 0; i < N; ++i) {
     socket.write(buf, function() { });
diff --git a/test/parallel/test-net-write-after-close.js b/test/parallel/test-net-write-after-close.js
index aaec898746..b9516b8392 100644
--- a/test/parallel/test-net-write-after-close.js
+++ b/test/parallel/test-net-write-after-close.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var net = require('net');
diff --git a/test/parallel/test-net-write-connect-write.js b/test/parallel/test-net-write-connect-write.js
index fbf6b51e6a..17b1b576d1 100644
--- a/test/parallel/test-net-write-connect-write.js
+++ b/test/parallel/test-net-write-connect-write.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var net = require('net');
diff --git a/test/parallel/test-net-write-slow.js b/test/parallel/test-net-write-slow.js
index 0b1cf4f5b2..4b8163984f 100644
--- a/test/parallel/test-net-write-slow.js
+++ b/test/parallel/test-net-write-slow.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var net = require('net');
diff --git a/test/parallel/test-next-tick-doesnt-hang.js b/test/parallel/test-next-tick-doesnt-hang.js
index 7364b2f974..5e63463d4d 100644
--- a/test/parallel/test-next-tick-doesnt-hang.js
+++ b/test/parallel/test-next-tick-doesnt-hang.js
@@ -1,3 +1,4 @@
+'use strict';
 /*
  * This test verifies that having a single nextTick statement and nothing else
  * does not hang the event loop. If this test times out it has failed.
diff --git a/test/parallel/test-next-tick-domain.js b/test/parallel/test-next-tick-domain.js
index b07d741f65..4d53bba6c4 100644
--- a/test/parallel/test-next-tick-domain.js
+++ b/test/parallel/test-next-tick-domain.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
@@ -5,4 +6,5 @@ var origNextTick = process.nextTick;
 
 require('domain');
 
-assert.strictEqual(origNextTick, process.nextTick, 'Requiring domain should not change nextTick');
+assert.strictEqual(origNextTick, process.nextTick,
+                   'Requiring domain should not change nextTick');
diff --git a/test/parallel/test-next-tick-errors.js b/test/parallel/test-next-tick-errors.js
index c2e635d5c5..eccd7a43a0 100644
--- a/test/parallel/test-next-tick-errors.js
+++ b/test/parallel/test-next-tick-errors.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-next-tick-intentional-starvation.js b/test/parallel/test-next-tick-intentional-starvation.js
index 5c8b414dcf..d4a8a1b748 100644
--- a/test/parallel/test-next-tick-intentional-starvation.js
+++ b/test/parallel/test-next-tick-intentional-starvation.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-next-tick-ordering.js b/test/parallel/test-next-tick-ordering.js
index 4340736aef..c2b936a106 100644
--- a/test/parallel/test-next-tick-ordering.js
+++ b/test/parallel/test-next-tick-ordering.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var i;
diff --git a/test/parallel/test-next-tick-ordering2.js b/test/parallel/test-next-tick-ordering2.js
index 69d4897fdb..4252d62367 100644
--- a/test/parallel/test-next-tick-ordering2.js
+++ b/test/parallel/test-next-tick-ordering2.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-next-tick.js b/test/parallel/test-next-tick.js
index 1081a96fa2..54e7b88cf0 100644
--- a/test/parallel/test-next-tick.js
+++ b/test/parallel/test-next-tick.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-os.js b/test/parallel/test-os.js
index dd1a1ae339..31b92f7280 100644
--- a/test/parallel/test-os.js
+++ b/test/parallel/test-os.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var os = require('os');
diff --git a/test/parallel/test-path-makelong.js b/test/parallel/test-path-makelong.js
index 51d6404c4d..b9cc116a5e 100644
--- a/test/parallel/test-path-makelong.js
+++ b/test/parallel/test-path-makelong.js
@@ -1,3 +1,4 @@
+'use strict';
 var assert = require('assert');
 var path = require('path');
 var common = require('../common');
diff --git a/test/parallel/test-path-parse-format.js b/test/parallel/test-path-parse-format.js
index d31dc99572..37f37fc9b5 100644
--- a/test/parallel/test-path-parse-format.js
+++ b/test/parallel/test-path-parse-format.js
@@ -1,3 +1,4 @@
+'use strict';
 var assert = require('assert');
 var path = require('path');
 
@@ -30,18 +31,30 @@ var unixPaths = [
 ];
 
 var errors = [
-  {method: 'parse', input: [null], message: /Path must be a string. Received null/},
-  {method: 'parse', input: [{}], message: /Path must be a string. Received {}/},
-  {method: 'parse', input: [true], message: /Path must be a string. Received true/},
-  {method: 'parse', input: [1], message: /Path must be a string. Received 1/},
-  {method: 'parse', input: [], message: /Path must be a string. Received undefined/},
-  // {method: 'parse', input: [''], message: /Invalid path/}, // omitted because it's hard to trigger!
-  {method: 'format', input: [null], message: /Parameter 'pathObject' must be an object, not/},
-  {method: 'format', input: [''], message: /Parameter 'pathObject' must be an object, not string/},
-  {method: 'format', input: [true], message: /Parameter 'pathObject' must be an object, not boolean/},
-  {method: 'format', input: [1], message: /Parameter 'pathObject' must be an object, not number/},
-  {method: 'format', input: [{root: true}], message: /'pathObject.root' must be a string or undefined, not boolean/},
-  {method: 'format', input: [{root: 12}], message: /'pathObject.root' must be a string or undefined, not number/},
+  {method: 'parse', input: [null],
+   message: /Path must be a string. Received null/},
+  {method: 'parse', input: [{}],
+   message: /Path must be a string. Received {}/},
+  {method: 'parse', input: [true],
+   message: /Path must be a string. Received true/},
+  {method: 'parse', input: [1],
+   message: /Path must be a string. Received 1/},
+  {method: 'parse', input: [],
+   message: /Path must be a string. Received undefined/},
+  // {method: 'parse', input: [''],
+  //  message: /Invalid path/}, // omitted because it's hard to trigger!
+  {method: 'format', input: [null],
+   message: /Parameter 'pathObject' must be an object, not/},
+  {method: 'format', input: [''],
+   message: /Parameter 'pathObject' must be an object, not string/},
+  {method: 'format', input: [true],
+   message: /Parameter 'pathObject' must be an object, not boolean/},
+  {method: 'format', input: [1],
+   message: /Parameter 'pathObject' must be an object, not number/},
+  {method: 'format', input: [{root: true}],
+   message: /'pathObject.root' must be a string or undefined, not boolean/},
+  {method: 'format', input: [{root: 12}],
+   message: /'pathObject.root' must be a string or undefined, not number/},
 ];
 
 check(path.win32, winPaths);
diff --git a/test/parallel/test-path.js b/test/parallel/test-path.js
index e0e9c5d567..b1209d762a 100644
--- a/test/parallel/test-path.js
+++ b/test/parallel/test-path.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-pipe-file-to-http.js b/test/parallel/test-pipe-file-to-http.js
index 01c23cb418..12ce742c90 100644
--- a/test/parallel/test-pipe-file-to-http.js
+++ b/test/parallel/test-pipe-file-to-http.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var fs = require('fs');
diff --git a/test/parallel/test-pipe-return-val.js b/test/parallel/test-pipe-return-val.js
index 6a333584f8..718d052cd2 100644
--- a/test/parallel/test-pipe-return-val.js
+++ b/test/parallel/test-pipe-return-val.js
@@ -1,3 +1,4 @@
+'use strict';
 // This test ensures SourceStream.pipe(DestStream) returns DestStream
 
 var common = require('../common');
diff --git a/test/parallel/test-preload.js b/test/parallel/test-preload.js
index 3f986d638f..e6bbfda1dc 100644
--- a/test/parallel/test-preload.js
+++ b/test/parallel/test-preload.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common'),
     assert = require('assert'),
     path = require('path'),
@@ -12,15 +13,15 @@ var preloadOption = function(preloads) {
     option += '-r ' + preload + ' ';
   });
   return option;
-}
+};
 
 var fixture = function(name) {
   return path.join(__dirname, '../fixtures/' + name);
-}
+};
 
 var fixtureA = fixture('printA.js');
 var fixtureB = fixture('printB.js');
-var fixtureC = fixture('printC.js')
+var fixtureC = fixture('printC.js');
 var fixtureThrows = fixture('throws_error4.js');
 
 // test preloading a single module works
diff --git a/test/parallel/test-process-argv-0.js b/test/parallel/test-process-argv-0.js
index daf8cb60eb..4bdb7ac3e7 100644
--- a/test/parallel/test-process-argv-0.js
+++ b/test/parallel/test-process-argv-0.js
@@ -1,3 +1,4 @@
+'use strict';
 var util = require('util');
 var path = require('path');
 var assert = require('assert');
@@ -7,8 +8,8 @@ var common = require('../common');
 console.error('argv=%j', process.argv);
 console.error('exec=%j', process.execPath);
 
-if (process.argv[2] !== "child") {
-  var child = spawn('./iojs', [__filename, "child"], {
+if (process.argv[2] !== 'child') {
+  var child = spawn('./iojs', [__filename, 'child'], {
     cwd: path.dirname(process.execPath)
   });
 
@@ -20,7 +21,7 @@ if (process.argv[2] !== "child") {
   child.stderr.on('data', function(chunk) {
     childErr += chunk;
   });
-  child.on('exit', function () {
+  child.on('exit', function() {
     console.error('CHILD: %s', childErr.trim().split('\n').join('\nCHILD: '));
     assert.equal(childArgv0, process.execPath);
   });
diff --git a/test/parallel/test-process-before-exit.js b/test/parallel/test-process-before-exit.js
index 48639c249d..eff96da98e 100644
--- a/test/parallel/test-process-before-exit.js
+++ b/test/parallel/test-process-before-exit.js
@@ -1,3 +1,4 @@
+'use strict';
 var assert = require('assert');
 var common = require('../common');
 
diff --git a/test/parallel/test-process-binding.js b/test/parallel/test-process-binding.js
index c803a8083f..dad2816d40 100644
--- a/test/parallel/test-process-binding.js
+++ b/test/parallel/test-process-binding.js
@@ -1,3 +1,4 @@
+'use strict';
 var assert = require('assert');
 
 assert.throws(
@@ -7,10 +8,10 @@ assert.throws(
   /No such module: test/
 );
 
-assert.doesNotThrow(function () {
+assert.doesNotThrow(function() {
   process.binding('buffer');
 }, function(err) {
   if ( (err instanceof Error) ) {
     return true;
   }
-}, "unexpected error");
+}, 'unexpected error');
diff --git a/test/parallel/test-process-config.js b/test/parallel/test-process-config.js
index d9260ca94d..4fc3bcaa98 100644
--- a/test/parallel/test-process-config.js
+++ b/test/parallel/test-process-config.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var fs = require('fs');
diff --git a/test/parallel/test-process-env.js b/test/parallel/test-process-env.js
index f3e2957ba6..7e927d09ba 100644
--- a/test/parallel/test-process-env.js
+++ b/test/parallel/test-process-env.js
@@ -1,3 +1,6 @@
+'use strict';
+/* eslint-disable max-len */
+
 // first things first, set the timezone; see tzset(3)
 process.env.TZ = 'Europe/Amsterdam';
 
diff --git a/test/parallel/test-process-exec-argv.js b/test/parallel/test-process-exec-argv.js
index 7344000739..59c4264ee3 100644
--- a/test/parallel/test-process-exec-argv.js
+++ b/test/parallel/test-process-exec-argv.js
@@ -1,3 +1,4 @@
+'use strict';
 var assert = require('assert');
 var spawn = require('child_process').spawn;
 
@@ -9,11 +10,11 @@ if (process.argv[2] === 'child') {
   var child = spawn(process.execPath, execArgv.concat(args));
   var out = '';
 
-  child.stdout.on('data', function (chunk) {
+  child.stdout.on('data', function(chunk) {
     out += chunk;
   });
 
-  child.on('exit', function () {
+  child.on('exit', function() {
     assert.deepEqual(JSON.parse(out), execArgv);
   });
 }
diff --git a/test/parallel/test-process-exit-code.js b/test/parallel/test-process-exit-code.js
index 610cf66298..fea8c2d4fc 100644
--- a/test/parallel/test-process-exit-code.js
+++ b/test/parallel/test-process-exit-code.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-process-exit-from-before-exit.js b/test/parallel/test-process-exit-from-before-exit.js
index e222f35245..30d358cb76 100644
--- a/test/parallel/test-process-exit-from-before-exit.js
+++ b/test/parallel/test-process-exit-from-before-exit.js
@@ -1,3 +1,4 @@
+'use strict';
 var assert = require('assert');
 var common = require('../common');
 
diff --git a/test/parallel/test-process-exit-recursive.js b/test/parallel/test-process-exit-recursive.js
index a326ec7f63..c1ee13370b 100644
--- a/test/parallel/test-process-exit-recursive.js
+++ b/test/parallel/test-process-exit-recursive.js
@@ -1,3 +1,4 @@
+'use strict';
 var assert = require('assert');
 
 // recursively calling .exit() should not overflow the call stack
diff --git a/test/parallel/test-process-exit.js b/test/parallel/test-process-exit.js
index 58d7a27699..999eefc1ef 100644
--- a/test/parallel/test-process-exit.js
+++ b/test/parallel/test-process-exit.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-process-getgroups.js b/test/parallel/test-process-getgroups.js
index f7c80ca6e0..1cb5f38c1d 100644
--- a/test/parallel/test-process-getgroups.js
+++ b/test/parallel/test-process-getgroups.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var exec = require('child_process').exec;
diff --git a/test/parallel/test-process-hrtime.js b/test/parallel/test-process-hrtime.js
index c845f919bb..0e2c5b110e 100644
--- a/test/parallel/test-process-hrtime.js
+++ b/test/parallel/test-process-hrtime.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
@@ -18,7 +19,7 @@ assert.throws(function() {
 function validateTuple(tuple) {
   assert(Array.isArray(tuple));
   assert.equal(2, tuple.length);
-  tuple.forEach(function (v) {
+  tuple.forEach(function(v) {
     assert.equal('number', typeof v);
     assert(isFinite(v));
   });
diff --git a/test/parallel/test-process-kill-null.js b/test/parallel/test-process-kill-null.js
index 77e2a8bb5e..65dab752f1 100644
--- a/test/parallel/test-process-kill-null.js
+++ b/test/parallel/test-process-kill-null.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var spawn = require('child_process').spawn;
diff --git a/test/parallel/test-process-kill-pid.js b/test/parallel/test-process-kill-pid.js
index 22ec5a6814..f193e97916 100644
--- a/test/parallel/test-process-kill-pid.js
+++ b/test/parallel/test-process-kill-pid.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
@@ -20,8 +21,8 @@ assert.throws(function() { process.kill('SIGTERM'); }, TypeError);
 assert.throws(function() { process.kill(null); }, TypeError);
 assert.throws(function() { process.kill(undefined); }, TypeError);
 assert.throws(function() { process.kill(+'not a number'); }, TypeError);
-assert.throws(function() { process.kill(1/0); }, TypeError);
-assert.throws(function() { process.kill(-1/0); }, TypeError);
+assert.throws(function() { process.kill(1 / 0); }, TypeError);
+assert.throws(function() { process.kill(-1 / 0); }, TypeError);
 
 // Test kill argument processing in valid cases.
 //
diff --git a/test/parallel/test-process-next-tick.js b/test/parallel/test-process-next-tick.js
index 3b2d37ef68..e7b5f8f3fe 100644
--- a/test/parallel/test-process-next-tick.js
+++ b/test/parallel/test-process-next-tick.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var N = 2;
diff --git a/test/parallel/test-process-raw-debug.js b/test/parallel/test-process-raw-debug.js
index 2264e59937..f849457d64 100644
--- a/test/parallel/test-process-raw-debug.js
+++ b/test/parallel/test-process-raw-debug.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var os = require('os');
diff --git a/test/parallel/test-process-remove-all-signal-listeners.js b/test/parallel/test-process-remove-all-signal-listeners.js
index e5dd5a13a1..408f6596c4 100644
--- a/test/parallel/test-process-remove-all-signal-listeners.js
+++ b/test/parallel/test-process-remove-all-signal-listeners.js
@@ -1,3 +1,4 @@
+'use strict';
 if (process.platform === 'win32') {
   // Win32 doesn't have signals, just a kindof emulation, insufficient
   // for this test to apply.
diff --git a/test/parallel/test-process-versions.js b/test/parallel/test-process-versions.js
index c3159789ce..637ada7fa8 100644
--- a/test/parallel/test-process-versions.js
+++ b/test/parallel/test-process-versions.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-process-wrap.js b/test/parallel/test-process-wrap.js
index f3d903adb1..bf3dfe4e8b 100644
--- a/test/parallel/test-process-wrap.js
+++ b/test/parallel/test-process-wrap.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var Process = process.binding('process_wrap').Process;
diff --git a/test/parallel/test-promises-unhandled-rejections.js b/test/parallel/test-promises-unhandled-rejections.js
index 997d147a6d..9a186de8df 100644
--- a/test/parallel/test-promises-unhandled-rejections.js
+++ b/test/parallel/test-promises-unhandled-rejections.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var domain = require('domain');
@@ -105,7 +106,8 @@ function onUnhandledFail(done) {
   }, 10);
 }
 
-asyncTest('synchronously rejected promise should trigger unhandledRejection', function(done) {
+asyncTest('synchronously rejected promise should trigger' +
+          ' unhandledRejection', function(done) {
   var e = new Error();
   onUnhandledSucceed(done, function(reason, promise) {
     assert.strictEqual(e, reason);
@@ -113,7 +115,8 @@ asyncTest('synchronously rejected promise should trigger unhandledRejection', fu
   Promise.reject(e);
 });
 
-asyncTest('synchronously rejected promise should trigger unhandledRejection', function(done) {
+asyncTest('synchronously rejected promise should trigger' +
+          ' unhandledRejection', function(done) {
   var e = new Error();
   onUnhandledSucceed(done, function(reason, promise) {
     assert.strictEqual(e, reason);
@@ -123,7 +126,8 @@ asyncTest('synchronously rejected promise should trigger unhandledRejection', fu
   });
 });
 
-asyncTest('Promise rejected after setImmediate should trigger unhandledRejection', function(done) {
+asyncTest('Promise rejected after setImmediate should trigger' +
+          ' unhandledRejection', function(done) {
   var e = new Error();
   onUnhandledSucceed(done, function(reason, promise) {
     assert.strictEqual(e, reason);
@@ -135,7 +139,8 @@ asyncTest('Promise rejected after setImmediate should trigger unhandledRejection
   });
 });
 
-asyncTest('Promise rejected after setTimeout(,1) should trigger unhandled rejection', function(done) {
+asyncTest('Promise rejected after setTimeout(,1) should trigger' +
+          ' unhandled rejection', function(done) {
   var e = new Error();
   onUnhandledSucceed(done, function(reason, promise) {
     assert.strictEqual(e, reason);
@@ -147,7 +152,8 @@ asyncTest('Promise rejected after setTimeout(,1) should trigger unhandled reject
   });
 });
 
-asyncTest('Catching a promise rejection after setImmediate is not soon enough to stop unhandledRejection', function(done) {
+asyncTest('Catching a promise rejection after setImmediate is not' +
+          ' soon enough to stop unhandledRejection', function(done) {
   var e = new Error();
   onUnhandledSucceed(done, function(reason, promise) {
     assert.strictEqual(e, reason);
@@ -155,14 +161,15 @@ asyncTest('Catching a promise rejection after setImmediate is not soon enough to
   var _reject;
   var promise = new Promise(function(_, reject) {
     _reject = reject;
-  })
+  });
   _reject(e);
   setImmediate(function() {
-    promise.then(assert.fail, function(){});
+    promise.then(assert.fail, function() {});
   });
 });
 
-asyncTest('When re-throwing new errors in a promise catch, only the re-thrown error should hit unhandledRejection', function(done) {
+asyncTest('When re-throwing new errors in a promise catch, only the' +
+          ' re-thrown error should hit unhandledRejection', function(done) {
   var e = new Error();
   var e2 = new Error();
   onUnhandledSucceed(done, function(reason, promise) {
@@ -175,7 +182,8 @@ asyncTest('When re-throwing new errors in a promise catch, only the re-thrown er
   });
 });
 
-asyncTest('Test params of unhandledRejection for a synchronously-rejected promise', function(done) {
+asyncTest('Test params of unhandledRejection for a synchronously-rejected' +
+          'promise', function(done) {
   var e = new Error();
   var e2 = new Error();
   onUnhandledSucceed(done, function(reason, promise) {
@@ -185,7 +193,9 @@ asyncTest('Test params of unhandledRejection for a synchronously-rejected promis
   var promise = Promise.reject(e);
 });
 
-asyncTest('When re-throwing new errors in a promise catch, only the re-thrown error should hit unhandledRejection: original promise rejected async with setTimeout(,1)', function(done) {
+asyncTest('When re-throwing new errors in a promise catch, only the ' +
+          're-thrown error should hit unhandledRejection: original promise' +
+          ' rejected async with setTimeout(,1)', function(done) {
   var e = new Error();
   var e2 = new Error();
   onUnhandledSucceed(done, function(reason, promise) {
@@ -202,7 +212,9 @@ asyncTest('When re-throwing new errors in a promise catch, only the re-thrown er
   });
 });
 
-asyncTest('When re-throwing new errors in a promise catch, only the re-thrown error should hit unhandledRejection: promise catch attached a process.nextTick after rejection', function(done) {
+asyncTest('When re-throwing new errors in a promise catch, only the re-thrown' +
+          ' error should hit unhandledRejection: promise catch attached a' +
+          ' process.nextTick after rejection', function(done) {
   var e = new Error();
   var e2 = new Error();
   onUnhandledSucceed(done, function(reason, promise) {
@@ -223,42 +235,50 @@ asyncTest('When re-throwing new errors in a promise catch, only the re-thrown er
   var promise2;
 });
 
-asyncTest('unhandledRejection should not be triggered if a promise catch is attached synchronously upon the promise\'s creation', function(done) {
+asyncTest('unhandledRejection should not be triggered if a promise catch is' +
+          ' attached synchronously upon the promise\'s creation',
+          function(done) {
   var e = new Error();
   onUnhandledFail(done);
-  Promise.reject(e).then(assert.fail, function(){});
+  Promise.reject(e).then(assert.fail, function() {});
 });
 
-asyncTest('unhandledRejection should not be triggered if a promise catch is attached synchronously upon the promise\'s creation', function(done) {
+asyncTest('unhandledRejection should not be triggered if a promise catch is' +
+          ' attached synchronously upon the promise\'s creation',
+          function(done) {
   var e = new Error();
   onUnhandledFail(done);
   new Promise(function(_, reject) {
     reject(e);
-  }).then(assert.fail, function(){});
+  }).then(assert.fail, function() {});
 });
 
-asyncTest('Attaching a promise catch in a process.nextTick is soon enough to prevent unhandledRejection', function(done) {
+asyncTest('Attaching a promise catch in a process.nextTick is soon enough to' +
+          ' prevent unhandledRejection', function(done) {
   var e = new Error();
   onUnhandledFail(done);
   var promise = Promise.reject(e);
   process.nextTick(function() {
-    promise.then(assert.fail, function(){});
+    promise.then(assert.fail, function() {});
   });
 });
 
-asyncTest('Attaching a promise catch in a process.nextTick is soon enough to prevent unhandledRejection', function(done) {
+asyncTest('Attaching a promise catch in a process.nextTick is soon enough to' +
+          ' prevent unhandledRejection', function(done) {
   var e = new Error();
   onUnhandledFail(done);
   var promise = new Promise(function(_, reject) {
     reject(e);
   });
   process.nextTick(function() {
-    promise.then(assert.fail, function(){});
+    promise.then(assert.fail, function() {});
   });
 });
 
 // State adapation tests
-asyncTest('catching a promise which is asynchronously rejected (via resolution to an asynchronously-rejected promise) prevents unhandledRejection', function(done) {
+asyncTest('catching a promise which is asynchronously rejected (via' +
+          'resolution to an asynchronously-rejected promise) prevents' +
+          ' unhandledRejection', function(done) {
   var e = new Error();
   onUnhandledFail(done);
   Promise.resolve().then(function() {
@@ -272,7 +292,8 @@ asyncTest('catching a promise which is asynchronously rejected (via resolution t
   });
 });
 
-asyncTest('Catching a rejected promise derived from throwing in a fulfillment handler prevents unhandledRejection', function(done) {
+asyncTest('Catching a rejected promise derived from throwing in a' +
+          ' fulfillment handler prevents unhandledRejection', function(done) {
   var e = new Error();
   onUnhandledFail(done);
   Promise.resolve().then(function() {
@@ -282,7 +303,9 @@ asyncTest('Catching a rejected promise derived from throwing in a fulfillment ha
   });
 });
 
-asyncTest('Catching a rejected promise derived from returning a synchronously-rejected promise in a fulfillment handler prevents unhandledRejection', function(done) {
+asyncTest('Catching a rejected promise derived from returning a' +
+          ' synchronously-rejected promise in a fulfillment handler' +
+          ' prevents unhandledRejection', function(done) {
   var e = new Error();
   onUnhandledFail(done);
   Promise.resolve().then(function() {
@@ -292,7 +315,9 @@ asyncTest('Catching a rejected promise derived from returning a synchronously-re
   });
 });
 
-asyncTest('A rejected promise derived from returning an asynchronously-rejected promise in a fulfillment handler does trigger unhandledRejection', function(done) {
+asyncTest('A rejected promise derived from returning an' +
+          ' asynchronously-rejected promise in a fulfillment handler' +
+          ' does trigger unhandledRejection', function(done) {
   var e = new Error();
   var _promise;
   onUnhandledSucceed(done, function(reason, promise) {
@@ -308,7 +333,8 @@ asyncTest('A rejected promise derived from returning an asynchronously-rejected
   });
 });
 
-asyncTest('A rejected promise derived from throwing in a fulfillment handler does trigger unhandledRejection', function(done) {
+asyncTest('A rejected promise derived from throwing in a fulfillment handler' +
+          ' does trigger unhandledRejection', function(done) {
   var e = new Error();
   var _promise;
   onUnhandledSucceed(done, function(reason, promise) {
@@ -320,7 +346,9 @@ asyncTest('A rejected promise derived from throwing in a fulfillment handler doe
   });
 });
 
-asyncTest('A rejected promise derived from returning a synchronously-rejected promise in a fulfillment handler does trigger unhandledRejection', function(done) {
+asyncTest('A rejected promise derived from returning a synchronously-rejected' +
+          ' promise in a fulfillment handler does trigger unhandledRejection',
+          function(done) {
   var e = new Error();
   var _promise;
   onUnhandledSucceed(done, function(reason, promise) {
@@ -333,13 +361,16 @@ asyncTest('A rejected promise derived from returning a synchronously-rejected pr
 });
 
 // Combinations with Promise.all
-asyncTest('Catching the Promise.all() of a collection that includes a rejected promise prevents unhandledRejection', function(done) {
+asyncTest('Catching the Promise.all() of a collection that includes a' +
+          'rejected promise prevents unhandledRejection', function(done) {
   var e = new Error();
   onUnhandledFail(done);
   Promise.all([Promise.reject(e)]).then(assert.fail, function() {});
 });
 
-asyncTest('Catching the Promise.all() of a collection that includes a nextTick-async rejected promise prevents unhandledRejection', function(done) {
+asyncTest('Catching the Promise.all() of a collection that includes a ' +
+          'nextTick-async rejected promise prevents unhandledRejection',
+          function(done) {
   var e = new Error();
   onUnhandledFail(done);
   var p = new Promise(function(_, reject) {
@@ -353,7 +384,9 @@ asyncTest('Catching the Promise.all() of a collection that includes a nextTick-a
   });
 });
 
-asyncTest('Failing to catch the Promise.all() of a collection that includes a rejected promise triggers unhandledRejection for the returned promise, not the passed promise', function(done) {
+asyncTest('Failing to catch the Promise.all() of a collection that includes' +
+          ' a rejected promise triggers unhandledRejection for the returned' +
+          ' promise, not the passed promise', function(done) {
   var e = new Error();
   onUnhandledSucceed(done, function(reason, promise) {
     assert.strictEqual(e, reason);
@@ -362,7 +395,8 @@ asyncTest('Failing to catch the Promise.all() of a collection that includes a re
   var p = Promise.all([Promise.reject(e)]);
 });
 
-asyncTest('Waiting setTimeout(, 10) to catch a promise causes an unhandledRejection + rejectionHandled pair', function(done) {
+asyncTest('Waiting setTimeout(, 10) to catch a promise causes an' +
+          ' unhandledRejection + rejectionHandled pair', function(done) {
   clean();
   var unhandledPromises = [];
   var e = new Error();
@@ -387,7 +421,9 @@ asyncTest('Waiting setTimeout(, 10) to catch a promise causes an unhandledReject
   }, 10);
 });
 
-asyncTest('Waiting for some combination of process.nextTick + promise microtasks to attach a catch handler is still soon enough to prevent unhandledRejection', function(done) {
+asyncTest('Waiting for some combination of process.nextTick + promise' +
+          ' microtasks to attach a catch handler is still soon enough to' +
+          ' prevent unhandledRejection', function(done) {
   var e = new Error();
   onUnhandledFail(done);
 
@@ -404,7 +440,9 @@ asyncTest('Waiting for some combination of process.nextTick + promise microtasks
   });
 });
 
-asyncTest('Waiting for some combination of process.nextTick + promise microtasks to attach a catch handler is still soon enough to prevent unhandledRejection: inside setImmediate', function(done) {
+asyncTest('Waiting for some combination of process.nextTick + promise' +
+          ' microtasks to attach a catch handler is still soon enough to ' +
+          'prevent unhandledRejection: inside setImmediate', function(done) {
   var e = new Error();
   onUnhandledFail(done);
 
@@ -422,7 +460,9 @@ asyncTest('Waiting for some combination of process.nextTick + promise microtasks
   });
 });
 
-asyncTest('Waiting for some combination of process.nextTick + promise microtasks to attach a catch handler is still soon enough to prevent unhandledRejection: inside setTimeout', function(done) {
+asyncTest('Waiting for some combination of process.nextTick + promise ' +
+          'microtasks to attach a catch handler is still soon enough to ' +
+          'prevent unhandledRejection: inside setTimeout', function(done) {
   var e = new Error();
   onUnhandledFail(done);
 
@@ -440,7 +480,9 @@ asyncTest('Waiting for some combination of process.nextTick + promise microtasks
   }, 0);
 });
 
-asyncTest('Waiting for some combination of promise microtasks + process.nextTick to attach a catch handler is still soon enough to prevent unhandledRejection', function(done) {
+asyncTest('Waiting for some combination of promise microtasks + ' +
+          'process.nextTick to attach a catch handler is still soon enough' +
+          ' to prevent unhandledRejection', function(done) {
   var e = new Error();
   onUnhandledFail(done);
 
@@ -457,7 +499,10 @@ asyncTest('Waiting for some combination of promise microtasks + process.nextTick
   });
 });
 
-asyncTest('Waiting for some combination of promise microtasks + process.nextTick to attach a catch handler is still soon enough to prevent unhandledRejection: inside setImmediate', function(done) {
+asyncTest('Waiting for some combination of promise microtasks +' +
+          ' process.nextTick to attach a catch handler is still soon enough' +
+          ' to prevent unhandledRejection: inside setImmediate',
+          function(done) {
   var e = new Error();
   onUnhandledFail(done);
 
@@ -475,7 +520,9 @@ asyncTest('Waiting for some combination of promise microtasks + process.nextTick
   });
 });
 
-asyncTest('Waiting for some combination of promise microtasks + process.nextTick to attach a catch handler is still soon enough to prevent unhandledRejection: inside setTimeout', function(done) {
+asyncTest('Waiting for some combination of promise microtasks +' +
+          ' process.nextTick to attach a catch handler is still soon enough' +
+          ' to prevent unhandledRejection: inside setTimeout', function(done) {
   var e = new Error();
   onUnhandledFail(done);
 
@@ -493,7 +540,9 @@ asyncTest('Waiting for some combination of promise microtasks + process.nextTick
   }, 0);
 });
 
-asyncTest('setImmediate + promise microtasks is too late to attach a catch handler; unhandledRejection will be triggered in that case. (setImmediate before promise creation/rejection)', function(done) {
+asyncTest('setImmediate + promise microtasks is too late to attach a catch' +
+          ' handler; unhandledRejection will be triggered in that case.' +
+          ' (setImmediate before promise creation/rejection)', function(done) {
   var e = new Error();
   onUnhandledSucceed(done, function(reason, promise) {
     assert.strictEqual(e, reason);
@@ -501,23 +550,25 @@ asyncTest('setImmediate + promise microtasks is too late to attach a catch handl
   });
   var p = Promise.reject(e);
   setImmediate(function() {
-    Promise.resolve().then(function () {
-      p.catch(function(){});
+    Promise.resolve().then(function() {
+      p.catch(function() {});
     });
   });
 });
 
-asyncTest('setImmediate + promise microtasks is too late to attach a catch handler; unhandledRejection will be triggered in that case (setImmediate before promise creation/rejection)', function(done) {
+asyncTest('setImmediate + promise microtasks is too late to attach a catch' +
+          ' handler; unhandledRejection will be triggered in that case' +
+          ' (setImmediate before promise creation/rejection)', function(done) {
   onUnhandledSucceed(done, function(reason, promise) {
     assert.strictEqual(undefined, reason);
     assert.strictEqual(p, promise);
   });
   setImmediate(function() {
-    Promise.resolve().then(function () {
-      Promise.resolve().then(function () {
-        Promise.resolve().then(function () {
-          Promise.resolve().then(function () {
-            p.catch(function(){});
+    Promise.resolve().then(function() {
+      Promise.resolve().then(function() {
+        Promise.resolve().then(function() {
+          Promise.resolve().then(function() {
+            p.catch(function() {});
           });
         });
       });
@@ -526,18 +577,20 @@ asyncTest('setImmediate + promise microtasks is too late to attach a catch handl
   var p = Promise.reject();
 });
 
-asyncTest('setImmediate + promise microtasks is too late to attach a catch handler; unhandledRejection will be triggered in that case (setImmediate after promise creation/rejection)', function(done) {
+asyncTest('setImmediate + promise microtasks is too late to attach a catch' +
+          ' handler; unhandledRejection will be triggered in that case' +
+          ' (setImmediate after promise creation/rejection)', function(done) {
   onUnhandledSucceed(done, function(reason, promise) {
     assert.strictEqual(undefined, reason);
     assert.strictEqual(p, promise);
   });
   var p = Promise.reject();
   setImmediate(function() {
-    Promise.resolve().then(function () {
-      Promise.resolve().then(function () {
-        Promise.resolve().then(function () {
-          Promise.resolve().then(function () {
-            p.catch(function(){});
+    Promise.resolve().then(function() {
+      Promise.resolve().then(function() {
+        Promise.resolve().then(function() {
+          Promise.resolve().then(function() {
+            p.catch(function() {});
           });
         });
       });
@@ -545,7 +598,9 @@ asyncTest('setImmediate + promise microtasks is too late to attach a catch handl
   });
 });
 
-asyncTest('Promise unhandledRejection handler does not interfere with domain error handlers being given exceptions thrown from nextTick.', function(done) {
+asyncTest('Promise unhandledRejection handler does not interfere with domain' +
+          ' error handlers being given exceptions thrown from nextTick.',
+          function(done) {
   var d = domain.create();
   var domainReceivedError;
   d.on('error', function(e) {
@@ -566,7 +621,8 @@ asyncTest('Promise unhandledRejection handler does not interfere with domain err
   });
 });
 
-asyncTest('nextTick is immediately scheduled when called inside an event handler', function(done) {
+asyncTest('nextTick is immediately scheduled when called inside an event' +
+          ' handler', function(done) {
   clean();
   var e = new Error('error');
   process.on('unhandledRejection', function(reason, promise) {
@@ -576,21 +632,23 @@ asyncTest('nextTick is immediately scheduled when called inside an event handler
     });
     setTimeout(function() {
       order.push(2);
-      assert.deepEqual([1,2], order);
+      assert.deepEqual([1, 2], order);
       done();
     }, 1);
   });
   Promise.reject(e);
 });
 
-asyncTest('Throwing an error inside a rejectionHandled handler goes to unhandledException, and does not cause .catch() to throw an exception', function(done) {
+asyncTest('Throwing an error inside a rejectionHandled handler goes to' +
+          ' unhandledException, and does not cause .catch() to throw an' +
+          'exception', function(done) {
   clean();
   var e = new Error();
   var e2 = new Error();
   var tearDownException = setupException(function(err) {
-      assert.equal(e2, err);
-      tearDownException();
-      done();
+    assert.equal(e2, err);
+    tearDownException();
+    done();
   });
   process.on('rejectionHandled', function() {
     throw e2;
@@ -598,7 +656,7 @@ asyncTest('Throwing an error inside a rejectionHandled handler goes to unhandled
   var p = Promise.reject(e);
   setTimeout(function() {
     try {
-      p.catch(function(){});
+      p.catch(function() {});
     } catch (e) {
       done(new Error('fail'));
     }
diff --git a/test/parallel/test-punycode.js b/test/parallel/test-punycode.js
index 4ac953849c..179bca51ec 100644
--- a/test/parallel/test-punycode.js
+++ b/test/parallel/test-punycode.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var punycode = require('punycode');
 var assert = require('assert');
diff --git a/test/parallel/test-querystring.js b/test/parallel/test-querystring.js
index 17fa6df924..66497ac2d3 100644
--- a/test/parallel/test-querystring.js
+++ b/test/parallel/test-querystring.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
@@ -240,7 +241,7 @@ assert.equal(
 
 // test overriding .unescape
 var prevUnescape = qs.unescape;
-qs.unescape = function (str) {
+qs.unescape = function(str) {
   return str.replace(/o/g, '_');
 };
 assert.deepEqual(qs.parse('foo=bor'), {f__: 'b_r'});
diff --git a/test/parallel/test-readdouble.js b/test/parallel/test-readdouble.js
index 6dfc401549..c0dab89565 100644
--- a/test/parallel/test-readdouble.js
+++ b/test/parallel/test-readdouble.js
@@ -1,3 +1,4 @@
+'use strict';
 /*
  * Tests to verify we're reading in doubles correctly
  */
diff --git a/test/parallel/test-readfloat.js b/test/parallel/test-readfloat.js
index 9b2fc612c7..5572bbf18e 100644
--- a/test/parallel/test-readfloat.js
+++ b/test/parallel/test-readfloat.js
@@ -1,3 +1,4 @@
+'use strict';
 /*
  * Tests to verify we're reading in floats correctly
  */
diff --git a/test/parallel/test-readint.js b/test/parallel/test-readint.js
index 208907d03e..233128d792 100644
--- a/test/parallel/test-readint.js
+++ b/test/parallel/test-readint.js
@@ -1,3 +1,4 @@
+'use strict';
 /*
  * Tests to verify we're reading in signed integers correctly
  */
diff --git a/test/parallel/test-readline-interface.js b/test/parallel/test-readline-interface.js
index 0edee3190c..6ee9ad2278 100644
--- a/test/parallel/test-readline-interface.js
+++ b/test/parallel/test-readline-interface.js
@@ -1,3 +1,4 @@
+'use strict';
 var assert = require('assert');
 var readline = require('readline');
 var EventEmitter = require('events').EventEmitter;
@@ -98,7 +99,7 @@ function isWarned(emitter) {
   assert.equal(callCount, expectedLines.length - 1);
   rli.close();
 
-  // sending multiple newlines at once that does not end with a new(empty) 
+  // sending multiple newlines at once that does not end with a new(empty)
   // line and a `end` event
   fi = new FakeInput();
   rli = new readline.Interface({ input: fi, output: fi, terminal: terminal });
@@ -110,7 +111,7 @@ function isWarned(emitter) {
   });
   rli.on('close', function() {
     callCount++;
-  })
+  });
   fi.emit('data', expectedLines.join('\n'));
   fi.emit('end');
   assert.equal(callCount, expectedLines.length);
@@ -249,10 +250,14 @@ function isWarned(emitter) {
   assert.equal(readline.getStringWidth('A\ud83c\ude00BC'), 5); // surrogate
 
   // check if vt control chars are stripped
-  assert.equal(readline.stripVTControlCharacters('\u001b[31m> \u001b[39m'), '> ');
-  assert.equal(readline.stripVTControlCharacters('\u001b[31m> \u001b[39m> '), '> > ');
-  assert.equal(readline.stripVTControlCharacters('\u001b[31m\u001b[39m'), '');
-  assert.equal(readline.stripVTControlCharacters('> '), '> ');
+  assert.equal(readline
+               .stripVTControlCharacters('\u001b[31m> \u001b[39m'), '> ');
+  assert.equal(readline
+               .stripVTControlCharacters('\u001b[31m> \u001b[39m> '), '> > ');
+  assert.equal(readline
+               .stripVTControlCharacters('\u001b[31m\u001b[39m'), '');
+  assert.equal(readline
+               .stripVTControlCharacters('> '), '> ');
   assert.equal(readline.getStringWidth('\u001b[31m> \u001b[39m'), 2);
   assert.equal(readline.getStringWidth('\u001b[31m> \u001b[39m> '), 4);
   assert.equal(readline.getStringWidth('\u001b[31m\u001b[39m'), 0);
@@ -261,7 +266,7 @@ function isWarned(emitter) {
   assert.deepEqual(fi.listeners(terminal ? 'keypress' : 'data'), []);
 
   // check EventEmitter memory leak
-  for (var i=0; i<12; i++) {
+  for (var i = 0; i < 12; i++) {
     var rl = readline.createInterface({
       input: process.stdin,
       output: process.stdout
@@ -284,7 +289,7 @@ function isWarned(emitter) {
   assert.ok(called);
 
   assert.doesNotThrow(function() {
-    rli.setPrompt("ddd> ");
+    rli.setPrompt('ddd> ');
   });
 
   assert.doesNotThrow(function() {
@@ -296,10 +301,10 @@ function isWarned(emitter) {
   });
 
   assert.doesNotThrow(function() {
-    rli.question("What do you think of node.js? ", function(answer) {
-      console.log("Thank you for your valuable feedback:", answer);
+    rli.question('What do you think of node.js? ', function(answer) {
+      console.log('Thank you for your valuable feedback:', answer);
       rli.close();
-    })
+    });
   });
 
 });
diff --git a/test/parallel/test-readline-keys.js b/test/parallel/test-readline-keys.js
index 0bf2673435..150273f799 100644
--- a/test/parallel/test-readline-keys.js
+++ b/test/parallel/test-readline-keys.js
@@ -1,3 +1,4 @@
+'use strict';
 var EventEmitter = require('events').EventEmitter;
 var PassThrough = require('stream').PassThrough;
 var assert = require('assert');
@@ -17,7 +18,7 @@ var fo = new FakeInput();
 var rli = new Interface({ input: fi, output: fo, terminal: true });
 
 var keys = [];
-fi.on('keypress', function (s, k) {
+fi.on('keypress', function(s, k) {
   keys.push(k);
 });
 
@@ -31,13 +32,13 @@ function addTest(sequences, expectedKeys) {
     expectedKeys = [ expectedKeys ];
   }
 
-  expectedKeys = expectedKeys.map(function (k) {
+  expectedKeys = expectedKeys.map(function(k) {
     return k ? extend({ ctrl: false, meta: false, shift: false }, k) : k;
   });
 
   keys = [];
 
-  sequences.forEach(function (sequence) {
+  sequences.forEach(function(sequence) {
     fi.write(sequence);
   });
   assert.deepStrictEqual(keys, expectedKeys);
diff --git a/test/parallel/test-readline-set-raw-mode.js b/test/parallel/test-readline-set-raw-mode.js
index 622d64181f..f9d5111581 100644
--- a/test/parallel/test-readline-set-raw-mode.js
+++ b/test/parallel/test-readline-set-raw-mode.js
@@ -1,3 +1,4 @@
+'use strict';
 var assert = require('assert');
 var readline = require('readline');
 var Stream = require('stream');
diff --git a/test/parallel/test-readuint.js b/test/parallel/test-readuint.js
index 293cb554ce..b984541bfe 100644
--- a/test/parallel/test-readuint.js
+++ b/test/parallel/test-readuint.js
@@ -1,3 +1,4 @@
+'use strict';
 /*
  * A battery of tests to help us read a series of uints
  */
diff --git a/test/parallel/test-regress-GH-4256.js b/test/parallel/test-regress-GH-4256.js
index ead32446b7..f512e61316 100644
--- a/test/parallel/test-regress-GH-4256.js
+++ b/test/parallel/test-regress-GH-4256.js
@@ -1,4 +1,5 @@
+'use strict';
 process.domain = null;
-timer = setTimeout(function() {
-  console.log("this console.log statement should not make node crash");
+var timer = setTimeout(function() {
+  console.log('this console.log statement should not make node crash');
 }, 1);
diff --git a/test/parallel/test-regress-GH-5927.js b/test/parallel/test-regress-GH-5927.js
index dee33d854a..541820c7a2 100644
--- a/test/parallel/test-regress-GH-5927.js
+++ b/test/parallel/test-regress-GH-5927.js
@@ -1,3 +1,4 @@
+'use strict';
 var assert = require('assert');
 var readline = require('readline');
 
@@ -10,12 +11,12 @@ var origPause = rl.pause;
 rl.pause = function() {
   hasPaused = true;
   origPause.apply(this, arguments);
-}
+};
 
 var origSetRawMode = rl._setRawMode;
 rl._setRawMode = function(mode) {
   assert.ok(hasPaused);
   origSetRawMode.apply(this, arguments);
-}
+};
 
 rl.close();
diff --git a/test/parallel/test-regress-GH-6235.js b/test/parallel/test-regress-GH-6235.js
index f929282b16..2f2f17d969 100644
--- a/test/parallel/test-regress-GH-6235.js
+++ b/test/parallel/test-regress-GH-6235.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-regress-GH-7511.js b/test/parallel/test-regress-GH-7511.js
index aa7a10c047..0e5c4ded01 100644
--- a/test/parallel/test-regress-GH-7511.js
+++ b/test/parallel/test-regress-GH-7511.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common'),
     assert = require('assert'),
     vm     = require('vm');
diff --git a/test/parallel/test-regress-GH-897.js b/test/parallel/test-regress-GH-897.js
index fae1bd4b5d..4b7ba61f9c 100644
--- a/test/parallel/test-regress-GH-897.js
+++ b/test/parallel/test-regress-GH-897.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-regress-GH-io-1068.js b/test/parallel/test-regress-GH-io-1068.js
index e769e6b81a..cc91fe28df 100644
--- a/test/parallel/test-regress-GH-io-1068.js
+++ b/test/parallel/test-regress-GH-io-1068.js
@@ -1 +1,2 @@
+'use strict';
 process.stdin.emit('end');
diff --git a/test/parallel/test-regress-GH-node-9326.js b/test/parallel/test-regress-GH-node-9326.js
index 15a2abbdc5..5dc73e044e 100644
--- a/test/parallel/test-regress-GH-node-9326.js
+++ b/test/parallel/test-regress-GH-node-9326.js
@@ -1,3 +1,4 @@
+'use strict';
 var assert = require('assert');
 var child_process = require('child_process');
 
diff --git a/test/parallel/test-regression-object-prototype.js b/test/parallel/test-regression-object-prototype.js
index 17fe1727d3..040e718948 100644
--- a/test/parallel/test-regression-object-prototype.js
+++ b/test/parallel/test-regression-object-prototype.js
@@ -1,3 +1,4 @@
+'use strict';
 //console.log('puts before');
 
 Object.prototype.xadsadsdasasdxx = function() {
diff --git a/test/parallel/test-repl-.save.load.js b/test/parallel/test-repl-.save.load.js
index d1c0f13e92..cf3224ecaf 100644
--- a/test/parallel/test-repl-.save.load.js
+++ b/test/parallel/test-repl-.save.load.js
@@ -1,3 +1,4 @@
+'use strict';
 var assert = require('assert');
 var util = require('util');
 var join = require('path').join;
@@ -13,7 +14,7 @@ function ArrayStream() {
     data.forEach(function(line) {
       self.emit('data', line + '\n');
     });
-  }
+  };
 }
 util.inherits(ArrayStream, require('stream').Stream);
 ArrayStream.prototype.readable = true;
@@ -28,7 +29,7 @@ var testMe = repl.start('', putIn);
 
 
 var testFile = [
-  'var top = function () {',
+  'var top = function() {',
   'var inner = {one:1};'
 ];
 var saveFileName = join(common.tmpDir, 'test.save.js');
diff --git a/test/parallel/test-repl-autolibs.js b/test/parallel/test-repl-autolibs.js
index c7727f574a..4103a19243 100644
--- a/test/parallel/test-repl-autolibs.js
+++ b/test/parallel/test-repl-autolibs.js
@@ -1,30 +1,31 @@
+'use strict';
 var assert = require('assert');
 var util = require('util');
 var repl = require('repl');
 
 // A stream to push an array into a REPL
 function ArrayStream() {
-  this.run = function (data) {
+  this.run = function(data) {
     var self = this;
-    data.forEach(function (line) {
+    data.forEach(function(line) {
       self.emit('data', line + '\n');
     });
-  }
+  };
 }
 util.inherits(ArrayStream, require('stream').Stream);
 ArrayStream.prototype.readable = true;
 ArrayStream.prototype.writable = true;
-ArrayStream.prototype.resume = function () {};
-ArrayStream.prototype.write = function () {};
+ArrayStream.prototype.resume = function() {};
+ArrayStream.prototype.write = function() {};
 
-var putIn = new ArrayStream;
+var putIn = new ArrayStream();
 var testMe = repl.start('', putIn, null, true);
 
 test1();
 
-function test1(){
+function test1() {
   var gotWrite = false;
-  putIn.write = function (data) {
+  putIn.write = function(data) {
     gotWrite = true;
     if (data.length) {
 
@@ -40,7 +41,7 @@ function test1(){
   assert(gotWrite);
 }
 
-function test2(){
+function test2() {
   var gotWrite = false;
   putIn.write = function(data) {
     gotWrite = true;
diff --git a/test/parallel/test-repl-console.js b/test/parallel/test-repl-console.js
index 45dad0f390..e66fcb1621 100644
--- a/test/parallel/test-repl-console.js
+++ b/test/parallel/test-repl-console.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common'),
     assert = require('assert'),
     Stream = require('stream'),
@@ -5,7 +6,7 @@ var common = require('../common'),
 
 // create a dummy stream that does nothing
 var stream = new Stream();
-stream.write = stream.pause = stream.resume = function(){};
+stream.write = stream.pause = stream.resume = function() {};
 stream.readable = stream.writable = true;
 
 var r = repl.start({
diff --git a/test/parallel/test-repl-domain.js b/test/parallel/test-repl-domain.js
index 929cb0ffd1..7528f50287 100644
--- a/test/parallel/test-repl-domain.js
+++ b/test/parallel/test-repl-domain.js
@@ -1,3 +1,4 @@
+'use strict';
 var assert = require('assert');
 var common = require('../common');
 
@@ -11,7 +12,7 @@ function ArrayStream() {
     data.forEach(function(line) {
       self.emit('data', line + '\n');
     });
-  }
+  };
 }
 util.inherits(ArrayStream, require('stream').Stream);
 ArrayStream.prototype.readable = true;
@@ -26,15 +27,15 @@ putIn.write = function(data) {
   // Don't use assert for this because the domain might catch it, and
   // give a false negative.  Don't throw, just print and exit.
   if (data === 'OK\n') {
-      console.log('ok');
+    console.log('ok');
   }
   else {
-      console.error(data);
-      process.exit(1);
+    console.error(data);
+    process.exit(1);
   }
 };
 
 putIn.run([
-  'require("domain").create().on("error", function () { console.log("OK") })'
-  + '.run(function () { throw new Error("threw") })'
+  'require("domain").create().on("error", function() { console.log("OK") })'
+  + '.run(function() { throw new Error("threw") })'
 ]);
diff --git a/test/parallel/test-repl-end-emits-exit.js b/test/parallel/test-repl-end-emits-exit.js
index bcb13a14af..e4bc4da78c 100644
--- a/test/parallel/test-repl-end-emits-exit.js
+++ b/test/parallel/test-repl-end-emits-exit.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common'),
     assert = require('assert'),
     Stream = require('stream'),
@@ -7,7 +8,7 @@ var common = require('../common'),
 
 // create a dummy stream that does nothing
 var stream = new Stream();
-stream.write = stream.pause = stream.resume = function(){};
+stream.write = stream.pause = stream.resume = function() {};
 stream.readable = stream.writable = true;
 
 function testTerminalMode() {
diff --git a/test/parallel/test-repl-harmony.js b/test/parallel/test-repl-harmony.js
index 420b3163cc..446aebe2d5 100644
--- a/test/parallel/test-repl-harmony.js
+++ b/test/parallel/test-repl-harmony.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-repl-mode.js b/test/parallel/test-repl-mode.js
index b71e213647..ba7d983bad 100644
--- a/test/parallel/test-repl-mode.js
+++ b/test/parallel/test-repl-mode.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var Stream = require('stream');
@@ -21,7 +22,7 @@ function testSloppyMode() {
   cli.input.emit('data', `
     x = 3
   `.trim() + '\n');
-  assert.equal(cli.output.accumulator.join(''), '> 3\n> ')
+  assert.equal(cli.output.accumulator.join(''), '> 3\n> ');
   cli.output.accumulator.length = 0;
 
   cli.input.emit('data', `
@@ -53,7 +54,7 @@ function testAutoMode() {
   cli.input.emit('data', `
     x = 3
   `.trim() + '\n');
-  assert.equal(cli.output.accumulator.join(''), '> 3\n> ')
+  assert.equal(cli.output.accumulator.join(''), '> 3\n> ');
   cli.output.accumulator.length = 0;
 
   cli.input.emit('data', `
@@ -64,7 +65,7 @@ function testAutoMode() {
 
 function initRepl(mode) {
   var input = new Stream();
-  input.write = input.pause = input.resume = function(){};
+  input.write = input.pause = input.resume = function() {};
   input.readable = true;
 
   var output = new Stream();
diff --git a/test/parallel/test-repl-options.js b/test/parallel/test-repl-options.js
index 31ea215054..5bc37d2d71 100644
--- a/test/parallel/test-repl-options.js
+++ b/test/parallel/test-repl-options.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common'),
     assert = require('assert'),
     Stream = require('stream'),
@@ -7,7 +8,7 @@ common.globalCheck = false;
 
 // create a dummy stream that does nothing
 var stream = new Stream();
-stream.write = stream.pause = stream.resume = function(){};
+stream.write = stream.pause = stream.resume = function() {};
 stream.readable = stream.writable = true;
 
 // 1, mostly defaults
@@ -75,7 +76,7 @@ var r3 = repl.start({
   writer: writer,
   replMode: repl.REPL_MODE_MAGIC,
   historySize: 50
-})
+});
 
 assert.equal(r3.replMode, repl.REPL_MODE_MAGIC);
 assert.equal(r3.historySize, 50);
diff --git a/test/parallel/test-repl-require-cache.js b/test/parallel/test-repl-require-cache.js
index 3ab3b7062c..d9b4d71d48 100644
--- a/test/parallel/test-repl-require-cache.js
+++ b/test/parallel/test-repl-require-cache.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common'),
     assert = require('assert'),
     repl = require('repl');
diff --git a/test/parallel/test-repl-reset-event.js b/test/parallel/test-repl-reset-event.js
index eee31e24be..e6157956d4 100644
--- a/test/parallel/test-repl-reset-event.js
+++ b/test/parallel/test-repl-reset-event.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 common.globalCheck = false;
 
@@ -7,7 +8,7 @@ var Stream = require('stream');
 
 // create a dummy stream that does nothing
 var dummy = new Stream();
-dummy.write = dummy.pause = dummy.resume = function(){};
+dummy.write = dummy.pause = dummy.resume = function() {};
 dummy.readable = dummy.writable = true;
 
 function testReset(cb) {
@@ -20,7 +21,8 @@ function testReset(cb) {
   r.on('reset', function(context) {
     assert(!!context, 'REPL did not emit a context with reset event');
     assert.equal(context, r.context, 'REPL emitted incorrect context');
-    assert.equal(context.foo, undefined, 'REPL emitted the previous context, and is not using global as context');
+    assert.equal(context.foo, undefined, 'REPL emitted the previous context' +
+                 ', and is not using global as context');
     context.foo = 42;
     cb();
   });
@@ -35,7 +37,8 @@ function testResetGlobal(cb) {
   });
   r.context.foo = 42;
   r.on('reset', function(context) {
-    assert.equal(context.foo, 42, '"foo" property is missing from REPL using global as context');
+    assert.equal(context.foo, 42,
+                 '"foo" property is missing from REPL using global as context');
     cb();
   });
   r.resetContext();
diff --git a/test/parallel/test-repl-setprompt.js b/test/parallel/test-repl-setprompt.js
index 56de10023f..b89dd6c928 100644
--- a/test/parallel/test-repl-setprompt.js
+++ b/test/parallel/test-repl-setprompt.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common'),
     assert = require('assert'),
     spawn = require('child_process').spawn,
@@ -9,14 +10,14 @@ var args = [
   'var e = new (require("repl")).REPLServer("foo.. "); e.context.e = e;',
 ];
 
-var p = "bar.. ";
+var p = 'bar.. ';
 
 var child = spawn(process.execPath, args);
 
 child.stdout.setEncoding('utf8');
 
 var data = '';
-child.stdout.on('data', function(d) { data += d });
+child.stdout.on('data', function(d) { data += d; });
 
 child.stdin.end(util.format("e.setPrompt('%s');%s", p, os.EOL));
 
diff --git a/test/parallel/test-repl-syntax-error-handling.js b/test/parallel/test-repl-syntax-error-handling.js
index 79489628b5..66e8fb6b35 100644
--- a/test/parallel/test-repl-syntax-error-handling.js
+++ b/test/parallel/test-repl-syntax-error-handling.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-repl-tab-complete.js b/test/parallel/test-repl-tab-complete.js
index c6a07f4017..659c8046a9 100644
--- a/test/parallel/test-repl-tab-complete.js
+++ b/test/parallel/test-repl-tab-complete.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var util = require('util');
@@ -11,7 +12,7 @@ function ArrayStream() {
     data.forEach(function(line) {
       self.emit('data', line + '\n');
     });
-  }
+  };
 }
 util.inherits(ArrayStream, require('stream').Stream);
 ArrayStream.prototype.readable = true;
@@ -48,7 +49,7 @@ putIn.run(['.clear']);
 
 // Tab Complete will not break in an ternary operator with ()
 putIn.run([
-  'var inner = ( true ' ,
+  'var inner = ( true ',
   '?',
   '{one: 1} : '
 ]);
@@ -60,7 +61,7 @@ putIn.run(['.clear']);
 
 // Tab Complete will return a simple local variable
 putIn.run([
-  'var top = function () {',
+  'var top = function() {',
   'var inner = {one:1};'
 ]);
 testMe.complete('inner.o', function(error, data) {
@@ -78,7 +79,7 @@ putIn.run(['.clear']);
 
 // Tab Complete will return a complex local variable
 putIn.run([
-  'var top = function () {',
+  'var top = function() {',
   'var inner = {',
   ' one:1',
   '};'
@@ -92,7 +93,7 @@ putIn.run(['.clear']);
 // Tab Complete will return a complex local variable even if the function
 // has parameters
 putIn.run([
-  'var top = function (one, two) {',
+  'var top = function(one, two) {',
   'var inner = {',
   ' one:1',
   '};'
@@ -106,7 +107,7 @@ putIn.run(['.clear']);
 // Tab Complete will return a complex local variable even if the
 // scope is nested inside an immediately executed function
 putIn.run([
-  'var top = function () {',
+  'var top = function() {',
   '(function test () {',
   'var inner = {',
   ' one:1',
@@ -121,7 +122,7 @@ putIn.run(['.clear']);
 // currently does not work, but should not break note the inner function
 // def has the params and { on a separate line
 putIn.run([
-  'var top = function () {',
+  'var top = function() {',
   'r = function test (',
   ' one, two) {',
   'var inner = {',
@@ -136,7 +137,7 @@ putIn.run(['.clear']);
 
 // currently does not work, but should not break, not the {
 putIn.run([
-  'var top = function () {',
+  'var top = function() {',
   'r = function test ()',
   '{',
   'var inner = {',
@@ -151,7 +152,7 @@ putIn.run(['.clear']);
 
 // currently does not work, but should not break
 putIn.run([
-  'var top = function () {',
+  'var top = function() {',
   'r = function test (',
   ')',
   '{',
@@ -181,7 +182,7 @@ var spaceTimeout = setTimeout(function() {
 }, 1000);
 
 testMe.complete(' ', function(error, data) {
-  assert.deepEqual(data, [[],undefined]);
+  assert.deepEqual(data, [[], undefined]);
   clearTimeout(spaceTimeout);
 });
 
diff --git a/test/parallel/test-repl-tab.js b/test/parallel/test-repl-tab.js
index 79d3c63220..badab2133b 100644
--- a/test/parallel/test-repl-tab.js
+++ b/test/parallel/test-repl-tab.js
@@ -1,3 +1,4 @@
+'use strict';
 var assert = require('assert');
 var util = require('util');
 var repl = require('repl');
@@ -9,7 +10,7 @@ var testMe = repl.start('', putIn, function(cmd, context, filename, callback) {
   callback(null, cmd);
 });
 
-testMe._domain.on('error', function (e) {
+testMe._domain.on('error', function(e) {
   assert.fail();
 });
 
diff --git a/test/parallel/test-repl-timeout-throw.js b/test/parallel/test-repl-timeout-throw.js
index eea2bea3ac..6c540c9e31 100644
--- a/test/parallel/test-repl-timeout-throw.js
+++ b/test/parallel/test-repl-timeout-throw.js
@@ -1,3 +1,4 @@
+'use strict';
 var assert = require('assert');
 var common = require('../common');
 
@@ -14,10 +15,12 @@ child.stdout.on('data', function(c) {
   stdout += c;
 });
 
-child.stdin.write = function(original) { return function(c) {
-  process.stderr.write(c);
-  return original.call(child.stdin, c);
-}}(child.stdin.write);
+child.stdin.write = function(original) {
+  return function(c) {
+    process.stderr.write(c);
+    return original.call(child.stdin, c);
+  };
+}(child.stdin.write);
 
 child.stdout.once('data', function() {
   child.stdin.write('var throws = 0;');
diff --git a/test/parallel/test-repl.js b/test/parallel/test-repl.js
index ecee764b4d..6911c59150 100644
--- a/test/parallel/test-repl.js
+++ b/test/parallel/test-repl.js
@@ -1,3 +1,4 @@
+/* eslint-disable max-len, strict */
 var common = require('../common');
 var assert = require('assert');
 
@@ -170,7 +171,7 @@ function error_test() {
     { client: client_unix, send: '1 }',
       expect: '{ a: 1 }' },
     // Multiline anonymous function with comment
-    { client: client_unix, send: '(function () {',
+    { client: client_unix, send: '(function() {',
       expect: prompt_multiline },
     { client: client_unix, send: '// blah',
       expect: prompt_multiline },
@@ -181,7 +182,7 @@ function error_test() {
     // npm prompt error message
     { client: client_unix, send: 'npm install foobar',
       expect: expect_npm },
-    { client: client_unix, send: '(function () {\n\nreturn 1;\n})()',
+    { client: client_unix, send: '(function() {\n\nreturn 1;\n})()',
       expect: '1' },
     { client: client_unix, send: '{\n\na: 1\n}',
       expect: '{ a: 1 }' },
diff --git a/test/parallel/test-require-cache.js b/test/parallel/test-require-cache.js
index a069d0a799..f2245345e3 100644
--- a/test/parallel/test-require-cache.js
+++ b/test/parallel/test-require-cache.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-require-dot.js b/test/parallel/test-require-dot.js
index 2551d88d22..aab466e3eb 100644
--- a/test/parallel/test-require-dot.js
+++ b/test/parallel/test-require-dot.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var module = require('module');
diff --git a/test/parallel/test-require-exceptions.js b/test/parallel/test-require-exceptions.js
index 16c63a90aa..e7a191b47a 100644
--- a/test/parallel/test-require-exceptions.js
+++ b/test/parallel/test-require-exceptions.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-require-extensions-main.js b/test/parallel/test-require-extensions-main.js
index 06d28ab30b..6e67d3ae04 100644
--- a/test/parallel/test-require-extensions-main.js
+++ b/test/parallel/test-require-extensions-main.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-require-extensions-same-filename-as-dir-trailing-slash.js b/test/parallel/test-require-extensions-same-filename-as-dir-trailing-slash.js
index cc2cd94ea6..1837a17bab 100644
--- a/test/parallel/test-require-extensions-same-filename-as-dir-trailing-slash.js
+++ b/test/parallel/test-require-extensions-same-filename-as-dir-trailing-slash.js
@@ -1,3 +1,5 @@
+/* eslint-disable max-len */
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-require-extensions-same-filename-as-dir.js b/test/parallel/test-require-extensions-same-filename-as-dir.js
index 387620afa7..41051dad45 100644
--- a/test/parallel/test-require-extensions-same-filename-as-dir.js
+++ b/test/parallel/test-require-extensions-same-filename-as-dir.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-require-json.js b/test/parallel/test-require-json.js
index dbf8c8f866..4c17fc8d02 100644
--- a/test/parallel/test-require-json.js
+++ b/test/parallel/test-require-json.js
@@ -1,3 +1,4 @@
+'use strict';
 var assert = require('assert');
 
 try {
diff --git a/test/parallel/test-require-process.js b/test/parallel/test-require-process.js
index 4693b4984e..fdd921a611 100644
--- a/test/parallel/test-require-process.js
+++ b/test/parallel/test-require-process.js
@@ -1,3 +1,4 @@
+'use strict';
 var assert = require('assert');
 
 var nativeProcess = require('process');
diff --git a/test/parallel/test-require-resolve.js b/test/parallel/test-require-resolve.js
index c11ff65ac4..13897c74da 100644
--- a/test/parallel/test-require-resolve.js
+++ b/test/parallel/test-require-resolve.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var fixturesDir = common.fixturesDir;
 var assert = require('assert');
diff --git a/test/parallel/test-signal-handler.js b/test/parallel/test-signal-handler.js
index 30cad31eef..f186287b0c 100644
--- a/test/parallel/test-signal-handler.js
+++ b/test/parallel/test-signal-handler.js
@@ -1,3 +1,4 @@
+'use strict';
 // SIGUSR1 and SIGHUP are not supported on Windows
 if (process.platform === 'win32') {
   process.exit(0);
@@ -39,7 +40,7 @@ setInterval(function() {
 // has been previously registered, and `process.listeners(SIGNAL).length === 1`
 process.on('SIGHUP', function() {});
 process.removeAllListeners('SIGHUP');
-process.on('SIGHUP', function() { sighup = true });
+process.on('SIGHUP', function() { sighup = true; });
 process.kill(process.pid, 'SIGHUP');
 
 process.on('exit', function() {
diff --git a/test/parallel/test-signal-safety.js b/test/parallel/test-signal-safety.js
index b037232a6b..549c26662f 100644
--- a/test/parallel/test-signal-safety.js
+++ b/test/parallel/test-signal-safety.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var Signal = process.binding('signal_wrap').Signal;
diff --git a/test/parallel/test-signal-unregister.js b/test/parallel/test-signal-unregister.js
index c3ab108dff..b65ade73db 100644
--- a/test/parallel/test-signal-unregister.js
+++ b/test/parallel/test-signal-unregister.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var spawn = require('child_process').spawn;
diff --git a/test/parallel/test-smalloc.js b/test/parallel/test-smalloc.js
index ef1aa60bad..ce4e4f43cd 100644
--- a/test/parallel/test-smalloc.js
+++ b/test/parallel/test-smalloc.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var os = require('os');
diff --git a/test/parallel/test-stdin-hang.js b/test/parallel/test-stdin-hang.js
index c22a097925..4818a9ee95 100644
--- a/test/parallel/test-stdin-hang.js
+++ b/test/parallel/test-stdin-hang.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 
 // This test *only* verifies that invoking the stdin getter does not
diff --git a/test/parallel/test-stdin-pause-resume-sync.js b/test/parallel/test-stdin-pause-resume-sync.js
index fdb8e030b7..4fe4d445a2 100644
--- a/test/parallel/test-stdin-pause-resume-sync.js
+++ b/test/parallel/test-stdin-pause-resume-sync.js
@@ -1,3 +1,4 @@
+'use strict';
 console.error('before opening stdin');
 process.stdin.resume();
 console.error('stdin opened');
diff --git a/test/parallel/test-stdin-pause-resume.js b/test/parallel/test-stdin-pause-resume.js
index a9282d5aa0..2685deb0e9 100644
--- a/test/parallel/test-stdin-pause-resume.js
+++ b/test/parallel/test-stdin-pause-resume.js
@@ -1,3 +1,4 @@
+'use strict';
 console.error('before opening stdin');
 process.stdin.resume();
 console.error('stdin opened');
diff --git a/test/parallel/test-stdin-resume-pause.js b/test/parallel/test-stdin-resume-pause.js
index 6290ff7999..963fd989f0 100644
--- a/test/parallel/test-stdin-resume-pause.js
+++ b/test/parallel/test-stdin-resume-pause.js
@@ -1,2 +1,3 @@
+'use strict';
 process.stdin.resume();
 process.stdin.pause();
diff --git a/test/parallel/test-stdio-closed.js b/test/parallel/test-stdio-closed.js
index 2543d8b021..2101f85ac0 100644
--- a/test/parallel/test-stdio-closed.js
+++ b/test/parallel/test-stdio-closed.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var spawn = require('child_process').spawn;
diff --git a/test/parallel/test-stdio-readable-writable.js b/test/parallel/test-stdio-readable-writable.js
index 95ae679bca..f8a8923498 100644
--- a/test/parallel/test-stdio-readable-writable.js
+++ b/test/parallel/test-stdio-readable-writable.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-stdout-close-unref.js b/test/parallel/test-stdout-close-unref.js
index 0b03e7142a..12a031562b 100644
--- a/test/parallel/test-stdout-close-unref.js
+++ b/test/parallel/test-stdout-close-unref.js
@@ -1,3 +1,4 @@
+'use strict';
 var assert = require('assert');
 var common = require('../common');
 
diff --git a/test/parallel/test-stream-big-packet.js b/test/parallel/test-stream-big-packet.js
index cfde7e47fb..a9f6064c7e 100644
--- a/test/parallel/test-stream-big-packet.js
+++ b/test/parallel/test-stream-big-packet.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var util = require('util');
@@ -5,20 +6,20 @@ var stream = require('stream');
 
 var passed = false;
 
-function PassThrough () {
+function PassThrough() {
   stream.Transform.call(this);
 };
 util.inherits(PassThrough, stream.Transform);
-PassThrough.prototype._transform = function (chunk, encoding, done) {
+PassThrough.prototype._transform = function(chunk, encoding, done) {
   this.push(chunk);
   done();
 };
 
-function TestStream () {
+function TestStream() {
   stream.Transform.call(this);
 };
 util.inherits(TestStream, stream.Transform);
-TestStream.prototype._transform = function (chunk, encoding, done) {
+TestStream.prototype._transform = function(chunk, encoding, done) {
   if (!passed) {
     // Char 'a' only exists in the last write
     passed = chunk.toString().indexOf('a') >= 0;
@@ -47,6 +48,6 @@ assert(s2.write('tiny'));
 setImmediate(s1.write.bind(s1), 'later');
 
 // Assert after two IO loops when all operations have been done.
-process.on('exit', function () {
+process.on('exit', function() {
   assert(passed, 'Large buffer is not handled properly by Writable Stream');
 });
diff --git a/test/parallel/test-stream-big-push.js b/test/parallel/test-stream-big-push.js
index b4ed8f8a52..e02ff98d3c 100644
--- a/test/parallel/test-stream-big-push.js
+++ b/test/parallel/test-stream-big-push.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var stream = require('stream');
diff --git a/test/parallel/test-stream-duplex.js b/test/parallel/test-stream-duplex.js
index 8efc9d4b5f..0e8789d6bf 100644
--- a/test/parallel/test-stream-duplex.js
+++ b/test/parallel/test-stream-duplex.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
@@ -11,21 +12,21 @@ assert(stream._writableState.objectMode);
 var written;
 var read;
 
-stream._write = function (obj, _, cb) {
+stream._write = function(obj, _, cb) {
   written = obj;
   cb();
 };
 
-stream._read = function () {};
+stream._read = function() {};
 
-stream.on('data', function (obj) {
+stream.on('data', function(obj) {
   read = obj;
 });
 
 stream.push({ val: 1 });
 stream.end({ val: 2 });
 
-process.on('exit', function () {
+process.on('exit', function() {
   assert(read.val === 1);
   assert(written.val === 2);
 });
diff --git a/test/parallel/test-stream-end-paused.js b/test/parallel/test-stream-end-paused.js
index 72825dc440..585d6c327f 100644
--- a/test/parallel/test-stream-end-paused.js
+++ b/test/parallel/test-stream-end-paused.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var gotEnd = false;
diff --git a/test/parallel/test-stream-ispaused.js b/test/parallel/test-stream-ispaused.js
index fe895ce7c3..8112dc733a 100644
--- a/test/parallel/test-stream-ispaused.js
+++ b/test/parallel/test-stream-ispaused.js
@@ -1,9 +1,10 @@
+'use strict';
 var assert = require('assert');
 var common = require('../common');
 
 var stream = require('stream');
 
-var readable = new stream.Readable;
+var readable = new stream.Readable();
 
 // _read is a noop, here.
 readable._read = Function();
diff --git a/test/parallel/test-stream-pipe-after-end.js b/test/parallel/test-stream-pipe-after-end.js
index a2fece3f7f..4bead73f68 100644
--- a/test/parallel/test-stream-pipe-after-end.js
+++ b/test/parallel/test-stream-pipe-after-end.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-stream-pipe-cleanup.js b/test/parallel/test-stream-pipe-cleanup.js
index b2963c4f56..08da96f92c 100644
--- a/test/parallel/test-stream-pipe-cleanup.js
+++ b/test/parallel/test-stream-pipe-cleanup.js
@@ -1,3 +1,4 @@
+'use strict';
 // This test asserts that Stream.prototype.pipe does not leave listeners
 // hanging on the source or dest.
 
diff --git a/test/parallel/test-stream-pipe-error-handling.js b/test/parallel/test-stream-pipe-error-handling.js
index 18ce5a1ede..031a0da7e3 100644
--- a/test/parallel/test-stream-pipe-error-handling.js
+++ b/test/parallel/test-stream-pipe-error-handling.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var Stream = require('stream').Stream;
@@ -41,8 +42,8 @@ var Stream = require('stream').Stream;
   var R = Stream.Readable;
   var W = Stream.Writable;
 
-  var r = new R;
-  var w = new W;
+  var r = new R();
+  var w = new W();
   var removed = false;
   var didTest = false;
 
@@ -76,8 +77,8 @@ var Stream = require('stream').Stream;
   var R = Stream.Readable;
   var W = Stream.Writable;
 
-  var r = new R;
-  var w = new W;
+  var r = new R();
+  var w = new W();
   var removed = false;
   var didTest = false;
   var caught = false;
diff --git a/test/parallel/test-stream-pipe-event.js b/test/parallel/test-stream-pipe-event.js
index bcae20c581..0d10533b0c 100644
--- a/test/parallel/test-stream-pipe-event.js
+++ b/test/parallel/test-stream-pipe-event.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var stream = require('stream');
 var assert = require('assert');
diff --git a/test/parallel/test-stream-push-order.js b/test/parallel/test-stream-push-order.js
index 5e403c7824..d67233aff7 100644
--- a/test/parallel/test-stream-push-order.js
+++ b/test/parallel/test-stream-push-order.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var Readable = require('stream').Readable;
 var assert = require('assert');
@@ -9,7 +10,7 @@ var s = new Readable({
 
 var list = ['1', '2', '3', '4', '5', '6'];
 
-s._read = function (n) {
+s._read = function(n) {
   var one = list.shift();
   if (!one) {
     s.push(null);
@@ -24,8 +25,8 @@ var v = s.read(0);
 
 // ACTUALLY [1, 3, 5, 6, 4, 2]
 
-process.on("exit", function () {
+process.on('exit', function() {
   assert.deepEqual(s._readableState.buffer,
                    ['1', '2', '3', '4', '5', '6']);
-  console.log("ok");
+  console.log('ok');
 });
diff --git a/test/parallel/test-stream-push-strings.js b/test/parallel/test-stream-push-strings.js
index f673173de5..0d9c0653c0 100644
--- a/test/parallel/test-stream-push-strings.js
+++ b/test/parallel/test-stream-push-strings.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-stream-readable-constructor-set-methods.js b/test/parallel/test-stream-readable-constructor-set-methods.js
index a88ffcd67a..928ce31a8e 100644
--- a/test/parallel/test-stream-readable-constructor-set-methods.js
+++ b/test/parallel/test-stream-readable-constructor-set-methods.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
@@ -12,7 +13,7 @@ function _read(n) {
 var r = new Readable({ read: _read });
 r.resume();
 
-process.on('exit', function () {
+process.on('exit', function() {
   assert.equal(r._read, _read);
   assert(_readCalled);
 });
diff --git a/test/parallel/test-stream-readable-event.js b/test/parallel/test-stream-readable-event.js
index 2d7d1cc4f9..965fc82c05 100644
--- a/test/parallel/test-stream-readable-event.js
+++ b/test/parallel/test-stream-readable-event.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-stream-readable-flow-recursion.js b/test/parallel/test-stream-readable-flow-recursion.js
index c3dfbef53b..07edd579f1 100644
--- a/test/parallel/test-stream-readable-flow-recursion.js
+++ b/test/parallel/test-stream-readable-flow-recursion.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-stream-transform-constructor-set-methods.js b/test/parallel/test-stream-transform-constructor-set-methods.js
index 55e64ed9b2..c24c273b6f 100644
--- a/test/parallel/test-stream-transform-constructor-set-methods.js
+++ b/test/parallel/test-stream-transform-constructor-set-methods.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
@@ -23,7 +24,7 @@ var t = new Transform({
 t.end(new Buffer('blerg'));
 t.resume();
 
-process.on('exit', function () {
+process.on('exit', function() {
   assert.equal(t._transform, _transform);
   assert.equal(t._flush, _flush);
   assert(_transformCalled);
diff --git a/test/parallel/test-stream-transform-objectmode-falsey-value.js b/test/parallel/test-stream-transform-objectmode-falsey-value.js
index 89feabef11..762f0500ad 100644
--- a/test/parallel/test-stream-transform-objectmode-falsey-value.js
+++ b/test/parallel/test-stream-transform-objectmode-falsey-value.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-stream-transform-split-objectmode.js b/test/parallel/test-stream-transform-split-objectmode.js
index df10ed1b65..24833ece05 100644
--- a/test/parallel/test-stream-transform-split-objectmode.js
+++ b/test/parallel/test-stream-transform-split-objectmode.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
@@ -10,19 +11,19 @@ assert(!parser._writableState.objectMode);
 assert(parser._readableState.highWaterMark === 16);
 assert(parser._writableState.highWaterMark === (16 * 1024));
 
-parser._transform = function (chunk, enc, callback) {
+parser._transform = function(chunk, enc, callback) {
   callback(null, { val : chunk[0] });
 };
 
 var parsed;
 
-parser.on('data', function (obj) {
+parser.on('data', function(obj) {
   parsed = obj;
 });
 
 parser.end(new Buffer([42]));
 
-process.on('exit', function () {
+process.on('exit', function() {
   assert(parsed.val === 42);
 });
 
@@ -34,18 +35,18 @@ assert(serializer._writableState.objectMode);
 assert(serializer._readableState.highWaterMark === (16 * 1024));
 assert(serializer._writableState.highWaterMark === 16);
 
-serializer._transform = function (obj, _, callback) {
+serializer._transform = function(obj, _, callback) {
   callback(null, new Buffer([obj.val]));
 };
 
 var serialized;
 
-serializer.on('data', function (chunk) {
+serializer.on('data', function(chunk) {
   serialized = chunk;
 });
 
 serializer.write({ val : 42 });
 
-process.on('exit', function () {
+process.on('exit', function() {
   assert(serialized[0] === 42);
 });
diff --git a/test/parallel/test-stream-unshift-empty-chunk.js b/test/parallel/test-stream-unshift-empty-chunk.js
index c985d4bc37..e6c4272212 100644
--- a/test/parallel/test-stream-unshift-empty-chunk.js
+++ b/test/parallel/test-stream-unshift-empty-chunk.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-stream-unshift-read-race.js b/test/parallel/test-stream-unshift-read-race.js
index dd7c6dfb37..90f519b5b5 100644
--- a/test/parallel/test-stream-unshift-read-race.js
+++ b/test/parallel/test-stream-unshift-read-race.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-stream-writable-change-default-encoding.js b/test/parallel/test-stream-writable-change-default-encoding.js
index 3e2277ad98..a6fcda3e62 100644
--- a/test/parallel/test-stream-writable-change-default-encoding.js
+++ b/test/parallel/test-stream-writable-change-default-encoding.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
@@ -11,7 +12,7 @@ function MyWritable(fn, options) {
 
 util.inherits(MyWritable, stream.Writable);
 
-MyWritable.prototype._write = function (chunk, encoding, callback) {
+MyWritable.prototype._write = function(chunk, encoding, callback) {
   this.fn(Buffer.isBuffer(chunk), typeof chunk, encoding);
   callback();
 };
diff --git a/test/parallel/test-stream-writable-constructor-set-methods.js b/test/parallel/test-stream-writable-constructor-set-methods.js
index 496ce66975..47fc458ce9 100644
--- a/test/parallel/test-stream-writable-constructor-set-methods.js
+++ b/test/parallel/test-stream-writable-constructor-set-methods.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
@@ -25,7 +26,7 @@ w2.write(new Buffer('blerg'));
 w2.write(new Buffer('blerg'));
 w2.end();
 
-process.on('exit', function () {
+process.on('exit', function() {
   assert.equal(w._write, _write);
   assert(_writeCalled);
   assert.equal(w2._writev, _writev);
diff --git a/test/parallel/test-stream-writable-decoded-encoding.js b/test/parallel/test-stream-writable-decoded-encoding.js
index fb530d0830..b637838c0c 100644
--- a/test/parallel/test-stream-writable-decoded-encoding.js
+++ b/test/parallel/test-stream-writable-decoded-encoding.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
@@ -11,7 +12,7 @@ function MyWritable(fn, options) {
 
 util.inherits(MyWritable, stream.Writable);
 
-MyWritable.prototype._write = function (chunk, encoding, callback) {
+MyWritable.prototype._write = function(chunk, encoding, callback) {
   this.fn(Buffer.isBuffer(chunk), typeof chunk, encoding);
   callback();
 };
diff --git a/test/parallel/test-stream-writev.js b/test/parallel/test-stream-writev.js
index 2a2ed3cdae..f73270f2ff 100644
--- a/test/parallel/test-stream-writev.js
+++ b/test/parallel/test-stream-writev.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
@@ -45,19 +46,24 @@ function test(decode, uncork, multi, next) {
   };
 
   var expectChunks = decode ?
-      [{ encoding: 'buffer',
-         chunk: [104, 101, 108, 108, 111, 44, 32] },
-       { encoding: 'buffer', chunk: [119, 111, 114, 108, 100] },
-       { encoding: 'buffer', chunk: [33] },
-       { encoding: 'buffer',
-         chunk: [10, 97, 110, 100, 32, 116, 104, 101, 110, 46, 46, 46] },
-       { encoding: 'buffer',
-         chunk: [250, 206, 190, 167, 222, 173, 190, 239, 222, 202, 251, 173] }] :
-      [{ encoding: 'ascii', chunk: 'hello, ' },
+      [
+        { encoding: 'buffer',
+          chunk: [104, 101, 108, 108, 111, 44, 32] },
+        { encoding: 'buffer',
+          chunk: [119, 111, 114, 108, 100] },
+        { encoding: 'buffer',
+          chunk: [33] },
+        { encoding: 'buffer',
+          chunk: [10, 97, 110, 100, 32, 116, 104, 101, 110, 46, 46, 46] },
+        { encoding: 'buffer',
+          chunk: [250, 206, 190, 167, 222, 173, 190, 239, 222, 202, 251, 173]}
+      ] : [
+       { encoding: 'ascii', chunk: 'hello, ' },
        { encoding: 'utf8', chunk: 'world' },
        { encoding: 'buffer', chunk: [33] },
        { encoding: 'binary', chunk: '\nand then...' },
-       { encoding: 'hex', chunk: 'facebea7deadbeefdecafbad' }];
+       { encoding: 'hex', chunk: 'facebea7deadbeefdecafbad' }
+      ];
 
   var actualChunks;
   w._writev = function(chunks, cb) {
diff --git a/test/parallel/test-stream2-base64-single-char-read-end.js b/test/parallel/test-stream2-base64-single-char-read-end.js
index 2082c714cc..37a97cd817 100644
--- a/test/parallel/test-stream2-base64-single-char-read-end.js
+++ b/test/parallel/test-stream2-base64-single-char-read-end.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var R = require('_stream_readable');
 var W = require('_stream_writable');
@@ -27,7 +28,7 @@ dst._write = function(chunk, enc, cb) {
 src.on('end', function() {
   assert.equal(Buffer.concat(accum) + '', 'MQ==');
   clearTimeout(timeout);
-})
+});
 
 src.pipe(dst);
 
diff --git a/test/parallel/test-stream2-compatibility.js b/test/parallel/test-stream2-compatibility.js
index 72b1e42850..9eab7b713b 100644
--- a/test/parallel/test-stream2-compatibility.js
+++ b/test/parallel/test-stream2-compatibility.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var R = require('_stream_readable');
 var assert = require('assert');
diff --git a/test/parallel/test-stream2-finish-pipe.js b/test/parallel/test-stream2-finish-pipe.js
index beabea0f0e..913bb7b0b4 100644
--- a/test/parallel/test-stream2-finish-pipe.js
+++ b/test/parallel/test-stream2-finish-pipe.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var stream = require('stream');
 var Buffer = require('buffer').Buffer;
diff --git a/test/parallel/test-stream2-large-read-stall.js b/test/parallel/test-stream2-large-read-stall.js
index 55d25a9b73..4cd89599fe 100644
--- a/test/parallel/test-stream2-large-read-stall.js
+++ b/test/parallel/test-stream2-large-read-stall.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-stream2-objects.js b/test/parallel/test-stream2-objects.js
index d7c5329179..a2f554a0b8 100644
--- a/test/parallel/test-stream2-objects.js
+++ b/test/parallel/test-stream2-objects.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var Readable = require('_stream_readable');
 var Writable = require('_stream_writable');
diff --git a/test/parallel/test-stream2-pipe-error-handling.js b/test/parallel/test-stream2-pipe-error-handling.js
index c7303accea..9eddbdd90d 100644
--- a/test/parallel/test-stream2-pipe-error-handling.js
+++ b/test/parallel/test-stream2-pipe-error-handling.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var stream = require('stream');
diff --git a/test/parallel/test-stream2-pipe-error-once-listener.js b/test/parallel/test-stream2-pipe-error-once-listener.js
index 0dbe8782e9..f2ecb87ce9 100644
--- a/test/parallel/test-stream2-pipe-error-once-listener.js
+++ b/test/parallel/test-stream2-pipe-error-once-listener.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-stream2-push.js b/test/parallel/test-stream2-push.js
index 9268f052a2..b58bce1435 100644
--- a/test/parallel/test-stream2-push.js
+++ b/test/parallel/test-stream2-push.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var stream = require('stream');
 var Readable = stream.Readable;
@@ -15,7 +16,7 @@ var stream = new Readable({
   encoding: 'utf8'
 });
 
-var source = new EE;
+var source = new EE();
 
 stream._read = function() {
   console.error('stream._read');
@@ -80,7 +81,7 @@ writer.on('finish', finish);
 
 // now emit some chunks.
 
-var chunk = "asdfg";
+var chunk = 'asdfg';
 
 var set = 0;
 readStart();
diff --git a/test/parallel/test-stream2-read-sync-stack.js b/test/parallel/test-stream2-read-sync-stack.js
index 48b605e46a..e912e1039f 100644
--- a/test/parallel/test-stream2-read-sync-stack.js
+++ b/test/parallel/test-stream2-read-sync-stack.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var Readable = require('stream').Readable;
diff --git a/test/parallel/test-stream2-readable-empty-buffer-no-eof.js b/test/parallel/test-stream2-readable-empty-buffer-no-eof.js
index e71c37e36a..8e4001f802 100644
--- a/test/parallel/test-stream2-readable-empty-buffer-no-eof.js
+++ b/test/parallel/test-stream2-readable-empty-buffer-no-eof.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-stream2-readable-from-list.js b/test/parallel/test-stream2-readable-from-list.js
index 3604ae3ec3..f142c49f14 100644
--- a/test/parallel/test-stream2-readable-from-list.js
+++ b/test/parallel/test-stream2-readable-from-list.js
@@ -1,3 +1,4 @@
+'use strict';
 var assert = require('assert');
 var common = require('../common');
 var fromList = require('_stream_readable')._fromList;
@@ -22,7 +23,7 @@ function run() {
   fn({
     same: assert.deepEqual,
     equal: assert.equal,
-    end: function () {
+    end: function() {
       count--;
       run();
     }
@@ -30,7 +31,7 @@ function run() {
 }
 
 // ensure all tests have run
-process.on("exit", function () {
+process.on('exit', function() {
   assert.equal(count, 0);
 });
 
diff --git a/test/parallel/test-stream2-readable-legacy-drain.js b/test/parallel/test-stream2-readable-legacy-drain.js
index 7e8eb6b1ef..4218bace2b 100644
--- a/test/parallel/test-stream2-readable-legacy-drain.js
+++ b/test/parallel/test-stream2-readable-legacy-drain.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-stream2-readable-non-empty-end.js b/test/parallel/test-stream2-readable-non-empty-end.js
index d77564cacb..46d6f92f2b 100644
--- a/test/parallel/test-stream2-readable-non-empty-end.js
+++ b/test/parallel/test-stream2-readable-non-empty-end.js
@@ -1,3 +1,4 @@
+'use strict';
 var assert = require('assert');
 var common = require('../common');
 var Readable = require('_stream_readable');
@@ -5,7 +6,7 @@ var Readable = require('_stream_readable');
 var len = 0;
 var chunks = new Array(10);
 for (var i = 1; i <= 10; i++) {
-  chunks[i-1] = new Buffer(i);
+  chunks[i - 1] = new Buffer(i);
   len += i;
 }
 
diff --git a/test/parallel/test-stream2-readable-wrap-empty.js b/test/parallel/test-stream2-readable-wrap-empty.js
index c1bc3361f2..60417ca893 100644
--- a/test/parallel/test-stream2-readable-wrap-empty.js
+++ b/test/parallel/test-stream2-readable-wrap-empty.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
@@ -5,18 +6,18 @@ var Readable = require('_stream_readable');
 var EE = require('events').EventEmitter;
 
 var oldStream = new EE();
-oldStream.pause = function(){};
-oldStream.resume = function(){};
+oldStream.pause = function() {};
+oldStream.resume = function() {};
 
 var newStream = new Readable().wrap(oldStream);
 
 var ended = false;
 newStream
-  .on('readable', function(){})
-  .on('end', function(){ ended = true; });
+  .on('readable', function() {})
+  .on('end', function() { ended = true; });
 
 oldStream.emit('end');
 
-process.on('exit', function(){
+process.on('exit', function() {
   assert.ok(ended);
 });
diff --git a/test/parallel/test-stream2-readable-wrap.js b/test/parallel/test-stream2-readable-wrap.js
index 71f8a28265..8e3e04b966 100644
--- a/test/parallel/test-stream2-readable-wrap.js
+++ b/test/parallel/test-stream2-readable-wrap.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
@@ -9,8 +10,9 @@ var testRuns = 0, completedRuns = 0;
 function runTest(highWaterMark, objectMode, produce) {
   testRuns++;
 
-  var old = new EE;
-  var r = new Readable({ highWaterMark: highWaterMark, objectMode: objectMode });
+  var old = new EE();
+  var r = new Readable({ highWaterMark: highWaterMark,
+                         objectMode: objectMode });
   assert.equal(r, r.wrap(old));
 
   var ended = false;
@@ -50,7 +52,8 @@ function runTest(highWaterMark, objectMode, produce) {
     }
   }
 
-  var w = new Writable({ highWaterMark: highWaterMark * 2, objectMode: objectMode });
+  var w = new Writable({ highWaterMark: highWaterMark * 2,
+                         objectMode: objectMode });
   var written = [];
   w._write = function(chunk, encoding, cb) {
     console.log('_write', chunk);
@@ -67,19 +70,19 @@ function runTest(highWaterMark, objectMode, produce) {
 
   flow();
 
-  function performAsserts() { 
+  function performAsserts() {
     assert(ended);
     assert(oldEnded);
     assert.deepEqual(written, expected);
   }
 }
 
-runTest(100, false, function(){ return new Buffer(100); });
-runTest(10, false, function(){ return new Buffer('xxxxxxxxxx'); });
-runTest(1, true, function(){ return { foo: 'bar' }; });
+runTest(100, false, function() { return new Buffer(100); });
+runTest(10, false, function() { return new Buffer('xxxxxxxxxx'); });
+runTest(1, true, function() { return { foo: 'bar' }; });
 
 var objectChunks = [ 5, 'a', false, 0, '', 'xyz', { x: 4 }, 7, [], 555 ];
-runTest(1, true, function(){ return objectChunks.shift() });
+runTest(1, true, function() { return objectChunks.shift(); });
 
 process.on('exit', function() {
   assert.equal(testRuns, completedRuns);
diff --git a/test/parallel/test-stream2-set-encoding.js b/test/parallel/test-stream2-set-encoding.js
index 47f078935b..ea9a315cb1 100644
--- a/test/parallel/test-stream2-set-encoding.js
+++ b/test/parallel/test-stream2-set-encoding.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var R = require('_stream_readable');
@@ -23,7 +24,7 @@ function run() {
   fn({
     same: assert.deepEqual,
     equal: assert.equal,
-    end: function () {
+    end: function() {
       count--;
       run();
     }
@@ -31,7 +32,7 @@ function run() {
 }
 
 // ensure all tests have run
-process.on("exit", function () {
+process.on('exit', function() {
   assert.equal(count, 0);
 });
 
@@ -68,7 +69,7 @@ TestReader.prototype._read = function(n) {
     var ret = new Buffer(n);
     ret.fill('a');
 
-    console.log("this.push(ret)", ret)
+    console.log('this.push(ret)', ret);
 
     return this.push(ret);
   }.bind(this), 1);
@@ -146,32 +147,32 @@ test('setEncoding hex with read(13)', function(t) {
   tr.setEncoding('hex');
   var out = [];
   var expect =
-    [ "6161616161616",
-      "1616161616161",
-      "6161616161616",
-      "1616161616161",
-      "6161616161616",
-      "1616161616161",
-      "6161616161616",
-      "1616161616161",
-      "6161616161616",
-      "1616161616161",
-      "6161616161616",
-      "1616161616161",
-      "6161616161616",
-      "1616161616161",
-      "6161616161616",
-      "16161" ];
+    [ '6161616161616',
+      '1616161616161',
+      '6161616161616',
+      '1616161616161',
+      '6161616161616',
+      '1616161616161',
+      '6161616161616',
+      '1616161616161',
+      '6161616161616',
+      '1616161616161',
+      '6161616161616',
+      '1616161616161',
+      '6161616161616',
+      '1616161616161',
+      '6161616161616',
+      '16161' ];
 
   tr.on('readable', function flow() {
-    console.log("readable once")
+    console.log('readable once');
     var chunk;
     while (null !== (chunk = tr.read(13)))
       out.push(chunk);
   });
 
   tr.on('end', function() {
-    console.log("END")
+    console.log('END');
     t.same(out, expect);
     t.end();
   });
@@ -278,22 +279,22 @@ test('encoding: hex with read(13)', function(t) {
   var tr = new TestReader(100, { encoding: 'hex' });
   var out = [];
   var expect =
-    [ "6161616161616",
-      "1616161616161",
-      "6161616161616",
-      "1616161616161",
-      "6161616161616",
-      "1616161616161",
-      "6161616161616",
-      "1616161616161",
-      "6161616161616",
-      "1616161616161",
-      "6161616161616",
-      "1616161616161",
-      "6161616161616",
-      "1616161616161",
-      "6161616161616",
-      "16161" ];
+    [ '6161616161616',
+      '1616161616161',
+      '6161616161616',
+      '1616161616161',
+      '6161616161616',
+      '1616161616161',
+      '6161616161616',
+      '1616161616161',
+      '6161616161616',
+      '1616161616161',
+      '6161616161616',
+      '1616161616161',
+      '6161616161616',
+      '1616161616161',
+      '6161616161616',
+      '16161' ];
 
   tr.on('readable', function flow() {
     var chunk;
diff --git a/test/parallel/test-stream2-transform.js b/test/parallel/test-stream2-transform.js
index 3bdef8fbf6..e45c913c94 100644
--- a/test/parallel/test-stream2-transform.js
+++ b/test/parallel/test-stream2-transform.js
@@ -1,3 +1,4 @@
+'use strict';
 var assert = require('assert');
 var common = require('../common');
 var PassThrough = require('_stream_passthrough');
@@ -24,7 +25,7 @@ function run() {
     same: assert.deepEqual,
     equal: assert.equal,
     ok: assert,
-    end: function () {
+    end: function() {
       count--;
       run();
     }
@@ -32,7 +33,7 @@ function run() {
 }
 
 // ensure all tests have run
-process.on("exit", function () {
+process.on('exit', function() {
   assert.equal(count, 0);
 });
 
@@ -83,7 +84,7 @@ test('passthrough', function(t) {
   t.end();
 });
 
-test('object passthrough', function (t) {
+test('object passthrough', function(t) {
   var pt = new PassThrough({ objectMode: true });
 
   pt.write(1);
@@ -106,7 +107,7 @@ test('object passthrough', function (t) {
 });
 
 test('simple transform', function(t) {
-  var pt = new Transform;
+  var pt = new Transform();
   pt._transform = function(c, e, cb) {
     var ret = new Buffer(c.length);
     ret.fill('x');
@@ -154,7 +155,7 @@ test('simple object transform', function(t) {
 });
 
 test('async passthrough', function(t) {
-  var pt = new Transform;
+  var pt = new Transform();
   pt._transform = function(chunk, encoding, cb) {
     setTimeout(function() {
       pt.push(chunk);
@@ -178,7 +179,7 @@ test('async passthrough', function(t) {
 });
 
 test('assymetric transform (expand)', function(t) {
-  var pt = new Transform;
+  var pt = new Transform();
 
   // emit each chunk 2 times.
   pt._transform = function(chunk, encoding, cb) {
@@ -187,7 +188,7 @@ test('assymetric transform (expand)', function(t) {
       setTimeout(function() {
         pt.push(chunk);
         cb();
-      }, 10)
+      }, 10);
     }, 10);
   };
 
@@ -210,7 +211,7 @@ test('assymetric transform (expand)', function(t) {
 });
 
 test('assymetric transform (compress)', function(t) {
-  var pt = new Transform;
+  var pt = new Transform();
 
   // each output is the first char of 3 consecutive chunks,
   // or whatever's left.
@@ -348,10 +349,10 @@ test('passthrough event emission', function(t) {
 });
 
 test('passthrough event emission reordered', function(t) {
-  var pt = new PassThrough;
+  var pt = new PassThrough();
   var emits = 0;
   pt.on('readable', function() {
-    console.error('emit readable', emits)
+    console.error('emit readable', emits);
     emits++;
   });
 
@@ -390,7 +391,7 @@ test('passthrough event emission reordered', function(t) {
 
 test('passthrough facaded', function(t) {
   console.error('passthrough facaded');
-  var pt = new PassThrough;
+  var pt = new PassThrough();
   var datas = [];
   pt.on('data', function(chunk) {
     datas.push(chunk.toString());
@@ -433,8 +434,8 @@ test('object transform (json parse)', function(t) {
   var objects = [
     { foo: 'bar' },
     100,
-    "string",
-    { nested: { things: [ { foo: 'bar' }, 100, "string" ] } }
+    'string',
+    { nested: { things: [ { foo: 'bar' }, 100, 'string' ] } }
   ];
 
   var ended = false;
@@ -455,7 +456,7 @@ test('object transform (json parse)', function(t) {
   process.nextTick(function() {
     t.ok(ended);
     t.end();
-  })
+  });
 });
 
 test('object transform (json stringify)', function(t) {
@@ -475,8 +476,8 @@ test('object transform (json stringify)', function(t) {
   var objects = [
     { foo: 'bar' },
     100,
-    "string",
-    { nested: { things: [ { foo: 'bar' }, 100, "string" ] } }
+    'string',
+    { nested: { things: [ { foo: 'bar' }, 100, 'string' ] } }
   ];
 
   var ended = false;
@@ -497,5 +498,5 @@ test('object transform (json stringify)', function(t) {
   process.nextTick(function() {
     t.ok(ended);
     t.end();
-  })
+  });
 });
diff --git a/test/parallel/test-stream2-unpipe-drain.js b/test/parallel/test-stream2-unpipe-drain.js
index 12d1c0648d..a430e4a58d 100644
--- a/test/parallel/test-stream2-unpipe-drain.js
+++ b/test/parallel/test-stream2-unpipe-drain.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var stream = require('stream');
@@ -11,11 +12,11 @@ var crypto = require('crypto');
 var util = require('util');
 
 function TestWriter() {
-    stream.Writable.call(this);
+  stream.Writable.call(this);
 }
 util.inherits(TestWriter, stream.Writable);
 
-TestWriter.prototype._write = function (buffer, encoding, callback) {
+TestWriter.prototype._write = function(buffer, encoding, callback) {
   console.log('write called');
   // super slow write stream (callback never called)
 };
@@ -23,12 +24,12 @@ TestWriter.prototype._write = function (buffer, encoding, callback) {
 var dest = new TestWriter();
 
 function TestReader(id) {
-    stream.Readable.call(this);
-    this.reads = 0;
+  stream.Readable.call(this);
+  this.reads = 0;
 }
 util.inherits(TestReader, stream.Readable);
 
-TestReader.prototype._read = function (size) {
+TestReader.prototype._read = function(size) {
   this.reads += 1;
   this.push(crypto.randomBytes(size));
 };
@@ -38,13 +39,13 @@ var src2 = new TestReader();
 
 src1.pipe(dest);
 
-src1.once('readable', function () {
-  process.nextTick(function () {
+src1.once('readable', function() {
+  process.nextTick(function() {
 
     src2.pipe(dest);
 
-    src2.once('readable', function () {
-      process.nextTick(function () {
+    src2.once('readable', function() {
+      process.nextTick(function() {
 
         src1.unpipe(dest);
       });
@@ -53,7 +54,7 @@ src1.once('readable', function () {
 });
 
 
-process.on('exit', function () {
+process.on('exit', function() {
   assert.equal(src1.reads, 2);
   assert.equal(src2.reads, 2);
 });
diff --git a/test/parallel/test-stream2-unpipe-leak.js b/test/parallel/test-stream2-unpipe-leak.js
index fae2b73ac4..15b510e7f6 100644
--- a/test/parallel/test-stream2-unpipe-leak.js
+++ b/test/parallel/test-stream2-unpipe-leak.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var stream = require('stream');
diff --git a/test/parallel/test-stream2-writable.js b/test/parallel/test-stream2-writable.js
index d90a2b6f75..1d87d7f920 100644
--- a/test/parallel/test-stream2-writable.js
+++ b/test/parallel/test-stream2-writable.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var W = require('_stream_writable');
 var D = require('_stream_duplex');
@@ -46,7 +47,7 @@ function run() {
   fn({
     same: assert.deepEqual,
     equal: assert.equal,
-    end: function () {
+    end: function() {
       count--;
       run();
     }
@@ -54,7 +55,7 @@ function run() {
 }
 
 // ensure all tests have run
-process.on("exit", function () {
+process.on('exit', function() {
   assert.equal(count, 0);
 });
 
@@ -196,7 +197,7 @@ test('write no bufferize', function(t) {
   t.end();
 });
 
-test('write callbacks', function (t) {
+test('write callbacks', function(t) {
   var callbacks = chunks.map(function(chunk, i) {
     return [i, function(er) {
       callbacks._called[i] = chunk;
@@ -225,42 +226,42 @@ test('write callbacks', function (t) {
   tw.end();
 });
 
-test('end callback', function (t) {
+test('end callback', function(t) {
   var tw = new TestWriter();
-  tw.end(function () {
+  tw.end(function() {
     t.end();
   });
 });
 
-test('end callback with chunk', function (t) {
+test('end callback with chunk', function(t) {
   var tw = new TestWriter();
-  tw.end(new Buffer('hello world'), function () {
+  tw.end(new Buffer('hello world'), function() {
     t.end();
   });
 });
 
-test('end callback with chunk and encoding', function (t) {
+test('end callback with chunk and encoding', function(t) {
   var tw = new TestWriter();
-  tw.end('hello world', 'ascii', function () {
+  tw.end('hello world', 'ascii', function() {
     t.end();
   });
 });
 
-test('end callback after .write() call', function (t) {
+test('end callback after .write() call', function(t) {
   var tw = new TestWriter();
   tw.write(new Buffer('hello world'));
-  tw.end(function () {
+  tw.end(function() {
     t.end();
   });
 });
 
-test('end callback called after write callback', function (t) {
+test('end callback called after write callback', function(t) {
   var tw = new TestWriter();
   var writeCalledback = false;
   tw.write(new Buffer('hello world'),  function() {
     writeCalledback = true;
   });
-  tw.end(function () {
+  tw.end(function() {
     t.equal(writeCalledback, true);
     t.end();
   });
diff --git a/test/parallel/test-stream3-pause-then-read.js b/test/parallel/test-stream3-pause-then-read.js
index 737a2f30a1..135629a243 100644
--- a/test/parallel/test-stream3-pause-then-read.js
+++ b/test/parallel/test-stream3-pause-then-read.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-string-decoder-end.js b/test/parallel/test-string-decoder-end.js
index 0bac7a5f28..f931c6abb9 100644
--- a/test/parallel/test-string-decoder-end.js
+++ b/test/parallel/test-string-decoder-end.js
@@ -1,3 +1,4 @@
+'use strict';
 // verify that the string decoder works getting 1 byte at a time,
 // the whole buffer at once, and that both match the .toString(enc)
 // result of the entire buffer.
diff --git a/test/parallel/test-string-decoder.js b/test/parallel/test-string-decoder.js
index dd28ba748b..c540ecfacd 100644
--- a/test/parallel/test-string-decoder.js
+++ b/test/parallel/test-string-decoder.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var StringDecoder = require('string_decoder').StringDecoder;
@@ -54,11 +55,11 @@ function test(encoding, input, expected, singleSequence) {
     process.stdout.write('.');
     if (output !== expected) {
       var message =
-        'Expected "'+unicodeEscape(expected)+'", '+
-        'but got "'+unicodeEscape(output)+'"\n'+
-        'Write sequence: '+JSON.stringify(sequence)+'\n'+
-        'Decoder charBuffer: 0x'+decoder.charBuffer.toString('hex')+'\n'+
-        'Full Decoder State: '+JSON.stringify(decoder, null, 2);
+        'Expected "' + unicodeEscape(expected) + '", ' +
+        'but got "' + unicodeEscape(output) + '"\n' +
+        'Write sequence: ' + JSON.stringify(sequence) + '\n' +
+        'Decoder charBuffer: 0x' + decoder.charBuffer.toString('hex') + '\n' +
+        'Full Decoder State: ' + JSON.stringify(decoder, null, 2);
       assert.fail(output, expected, message);
     }
   });
@@ -68,7 +69,7 @@ function test(encoding, input, expected, singleSequence) {
 function unicodeEscape(str) {
   var r = '';
   for (var i = 0; i < str.length; i++) {
-    r += '\\u'+str.charCodeAt(i).toString(16);
+    r += '\\u' + str.charCodeAt(i).toString(16);
   }
   return r;
 }
@@ -86,7 +87,7 @@ function unicodeEscape(str) {
 function writeSequences(length, start, sequence) {
   if (start === undefined) {
     start = 0;
-    sequence = []
+    sequence = [];
   } else if (start === length) {
     return [sequence];
   }
diff --git a/test/parallel/test-stringbytes-external.js b/test/parallel/test-stringbytes-external.js
index ab8eb68d34..4453580bd9 100644
--- a/test/parallel/test-stringbytes-external.js
+++ b/test/parallel/test-stringbytes-external.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 // minimum string size to overflow into external string space
@@ -54,7 +55,7 @@ var RADIOS = 2;
 var PRE_HALF_APEX = Math.ceil(EXTERN_APEX / 2) - RADIOS;
 var PRE_3OF4_APEX = Math.ceil((EXTERN_APEX / 4) * 3) - RADIOS;
 
-(function () {
+(function() {
   for (var j = 0; j < RADIOS * 2; j += 1) {
     var datum = b;
     var slice = datum.slice(0, PRE_HALF_APEX + j);
@@ -63,7 +64,7 @@ var PRE_3OF4_APEX = Math.ceil((EXTERN_APEX / 4) * 3) - RADIOS;
     var pumped_string2 = slice2.toString('hex');
     var decoded = new Buffer(pumped_string, 'hex');
 
-    var metadata = "\nEXTERN_APEX=1031913 - pumped_string.length="
+    var metadata = '\nEXTERN_APEX=1031913 - pumped_string.length=';
     metadata += pumped_string.length + '\n';
 
     // the string are the same?
@@ -80,7 +81,7 @@ var PRE_3OF4_APEX = Math.ceil((EXTERN_APEX / 4) * 3) - RADIOS;
   }
 })();
 
-(function () {
+(function() {
   for (var j = 0; j < RADIOS * 2; j += 1) {
     var datum = b;
     var slice = datum.slice(0, PRE_3OF4_APEX + j);
@@ -89,8 +90,8 @@ var PRE_3OF4_APEX = Math.ceil((EXTERN_APEX / 4) * 3) - RADIOS;
     var pumped_string2 = slice2.toString('base64');
     var decoded = new Buffer(pumped_string, 'base64');
 
-    var metadata = "\nEXTERN_APEX=1031913 - data=" + slice.length
-    metadata += " pumped_string.length=" + pumped_string.length + '\n';
+    var metadata = '\nEXTERN_APEX=1031913 - data=" + slice.length';
+    metadata += ' pumped_string.length=' + pumped_string.length + '\n';
 
     // the string are the same?
     for (var k = 0; k < pumped_string.length - 3; ++k) {
diff --git a/test/parallel/test-sys.js b/test/parallel/test-sys.js
index 8b3ea082b6..a5631a5cb1 100644
--- a/test/parallel/test-sys.js
+++ b/test/parallel/test-sys.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-tcp-wrap.js b/test/parallel/test-tcp-wrap.js
index 6ed8fb44ca..93da3e5b3b 100644
--- a/test/parallel/test-tcp-wrap.js
+++ b/test/parallel/test-tcp-wrap.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-timer-close.js b/test/parallel/test-timer-close.js
index b374fe162c..79f06dffa9 100644
--- a/test/parallel/test-timer-close.js
+++ b/test/parallel/test-timer-close.js
@@ -1,3 +1,4 @@
+'use strict';
 var assert = require('assert');
 
 var t = new (process.binding('timer_wrap').Timer);
diff --git a/test/parallel/test-timers-args.js b/test/parallel/test-timers-args.js
index 599037b95b..abb785ea0f 100644
--- a/test/parallel/test-timers-args.js
+++ b/test/parallel/test-timers-args.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-timers-first-fire.js b/test/parallel/test-timers-first-fire.js
index 385724b0b0..88460e1e3a 100644
--- a/test/parallel/test-timers-first-fire.js
+++ b/test/parallel/test-timers-first-fire.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-timers-immediate-queue.js b/test/parallel/test-timers-immediate-queue.js
index 1c0b095f18..a71472d464 100644
--- a/test/parallel/test-timers-immediate-queue.js
+++ b/test/parallel/test-timers-immediate-queue.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-timers-immediate.js b/test/parallel/test-timers-immediate.js
index 00652d0406..bcfc4616ac 100644
--- a/test/parallel/test-timers-immediate.js
+++ b/test/parallel/test-timers-immediate.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-timers-linked-list.js b/test/parallel/test-timers-linked-list.js
index 79a9839627..00b2129d12 100644
--- a/test/parallel/test-timers-linked-list.js
+++ b/test/parallel/test-timers-linked-list.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var L = require('_linklist');
diff --git a/test/parallel/test-timers-non-integer-delay.js b/test/parallel/test-timers-non-integer-delay.js
index 229db3892d..a3e5420a5e 100644
--- a/test/parallel/test-timers-non-integer-delay.js
+++ b/test/parallel/test-timers-non-integer-delay.js
@@ -1,3 +1,4 @@
+'use strict';
 /*
  * This test makes sure that non-integer timer delays do not make the process
  * hang. See https://github.com/joyent/node/issues/8065 and
diff --git a/test/parallel/test-timers-ordering.js b/test/parallel/test-timers-ordering.js
index 9f40288ec5..730a78a072 100644
--- a/test/parallel/test-timers-ordering.js
+++ b/test/parallel/test-timers-ordering.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var Timer = process.binding('timer_wrap').Timer;
@@ -13,13 +14,15 @@ var start = Timer.now();
 var f = function(i) {
   if (i <= N) {
     // check order
-    assert.equal(i, last_i + 1, 'order is broken: ' + i + ' != ' + last_i + ' + 1');
+    assert.equal(i, last_i + 1, 'order is broken: ' + i + ' != ' +
+                 last_i + ' + 1');
     last_i = i;
 
     // check that this iteration is fired at least 1ms later than the previous
     var now = Timer.now();
     console.log(i, now);
-    assert(now >= last_ts + 1, 'current ts ' + now + ' < prev ts ' + last_ts + ' + 1');
+    assert(now >= last_ts + 1,
+        'current ts ' + now + ' < prev ts ' + last_ts + ' + 1');
     last_ts = now;
 
     // schedule next iteration
diff --git a/test/parallel/test-timers-this.js b/test/parallel/test-timers-this.js
index cacb3f247c..df710b9cb8 100644
--- a/test/parallel/test-timers-this.js
+++ b/test/parallel/test-timers-this.js
@@ -1,37 +1,38 @@
+'use strict';
 var assert = require('assert');
 
 var immediateThis, intervalThis, timeoutThis,
     immediateArgsThis, intervalArgsThis, timeoutArgsThis;
 
-var immediateHandler = setImmediate(function () {
+var immediateHandler = setImmediate(function() {
   immediateThis = this;
 });
 
-var immediateArgsHandler = setImmediate(function () {
+var immediateArgsHandler = setImmediate(function() {
   immediateArgsThis = this;
-}, "args ...");
+}, 'args ...');
 
-var intervalHandler = setInterval(function () {
+var intervalHandler = setInterval(function() {
   clearInterval(intervalHandler);
 
   intervalThis = this;
 });
 
-var intervalArgsHandler = setInterval(function () {
+var intervalArgsHandler = setInterval(function() {
   clearInterval(intervalArgsHandler);
 
   intervalArgsThis = this;
-}, 0, "args ...");
+}, 0, 'args ...');
 
-var timeoutHandler = setTimeout(function () {
+var timeoutHandler = setTimeout(function() {
   timeoutThis = this;
 });
 
-var timeoutArgsHandler = setTimeout(function () {
+var timeoutArgsHandler = setTimeout(function() {
   timeoutArgsThis = this;
-}, 0, "args ...");
+}, 0, 'args ...');
 
-process.once('exit', function () {
+process.once('exit', function() {
   assert.strictEqual(immediateThis, immediateHandler);
   assert.strictEqual(immediateArgsThis, immediateArgsHandler);
 
diff --git a/test/parallel/test-timers-uncaught-exception.js b/test/parallel/test-timers-uncaught-exception.js
index 4e13742793..794b3b923b 100644
--- a/test/parallel/test-timers-uncaught-exception.js
+++ b/test/parallel/test-timers-uncaught-exception.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-timers-unref-call.js b/test/parallel/test-timers-unref-call.js
index 4f7865b845..b348330d20 100644
--- a/test/parallel/test-timers-unref-call.js
+++ b/test/parallel/test-timers-unref-call.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 
 var Timer = process.binding('timer_wrap').Timer;
diff --git a/test/parallel/test-timers-unref-leak.js b/test/parallel/test-timers-unref-leak.js
index c8f958a47c..55907d9bc4 100644
--- a/test/parallel/test-timers-unref-leak.js
+++ b/test/parallel/test-timers-unref-leak.js
@@ -1,3 +1,4 @@
+'use strict';
 var assert = require('assert');
 
 var called = 0;
diff --git a/test/parallel/test-timers-unref.js b/test/parallel/test-timers-unref.js
index 2f750228a4..ab2e33acd2 100644
--- a/test/parallel/test-timers-unref.js
+++ b/test/parallel/test-timers-unref.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
@@ -53,9 +54,14 @@ setInterval(function() {
 })();
 
 process.on('exit', function() {
-  assert.strictEqual(interval_fired, false, 'Interval should not fire');
-  assert.strictEqual(timeout_fired, false, 'Timeout should not fire');
-  assert.strictEqual(unref_timer, true, 'An unrefd timeout should still fire');
-  assert.strictEqual(unref_interval, true, 'An unrefd interval should still fire');
-  assert.strictEqual(unref_callbacks, 1, 'Callback should only run once');
+  assert.strictEqual(interval_fired, false,
+                     'Interval should not fire');
+  assert.strictEqual(timeout_fired, false,
+                     'Timeout should not fire');
+  assert.strictEqual(unref_timer, true,
+                     'An unrefd timeout should still fire');
+  assert.strictEqual(unref_interval, true,
+                     'An unrefd interval should still fire');
+  assert.strictEqual(unref_callbacks, 1,
+                     'Callback should only run once');
 });
diff --git a/test/parallel/test-timers-unrefd-interval-still-fires.js b/test/parallel/test-timers-unrefd-interval-still-fires.js
index 3ea94454cf..50a473b9c8 100644
--- a/test/parallel/test-timers-unrefd-interval-still-fires.js
+++ b/test/parallel/test-timers-unrefd-interval-still-fires.js
@@ -1,3 +1,4 @@
+'use strict';
 /*
  * This test is a regression test for joyent/node#8900.
  */
diff --git a/test/parallel/test-timers-zero-timeout.js b/test/parallel/test-timers-zero-timeout.js
index 939b8db1bb..1c84814363 100644
--- a/test/parallel/test-timers-zero-timeout.js
+++ b/test/parallel/test-timers-zero-timeout.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-timers.js b/test/parallel/test-timers.js
index dad1bcc693..e784e26295 100644
--- a/test/parallel/test-timers.js
+++ b/test/parallel/test-timers.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-tls-0-dns-altname.js b/test/parallel/test-tls-0-dns-altname.js
index 0d01805154..fd10206a12 100644
--- a/test/parallel/test-tls-0-dns-altname.js
+++ b/test/parallel/test-tls-0-dns-altname.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
@@ -31,8 +32,8 @@ var server = tls.createServer({
     assert.equal(cert.subjectaltname,
                  'DNS:google.com\0.evil.com, ' +
                      'DNS:just-another.com, ' +
-                     'IP Address:8.8.8.8, '+
-                     'IP Address:8.8.4.4, '+
+                     'IP Address:8.8.8.8, ' +
+                     'IP Address:8.8.4.4, ' +
                      'DNS:last.com');
     c.write('ok');
   });
diff --git a/test/parallel/test-tls-alert-handling.js b/test/parallel/test-tls-alert-handling.js
index 045e69b949..ed8999b6b7 100644
--- a/test/parallel/test-tls-alert-handling.js
+++ b/test/parallel/test-tls-alert-handling.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-tls-alert.js b/test/parallel/test-tls-alert.js
index a96a104f24..97087d0b3b 100644
--- a/test/parallel/test-tls-alert.js
+++ b/test/parallel/test-tls-alert.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
@@ -30,7 +31,8 @@ var server = tls.Server({
   key: loadPEM('agent2-key'),
   cert:loadPEM('agent2-cert')
 }, null).listen(common.PORT, function() {
-  var args = ['s_client', '-quiet', '-tls1_1','-connect', '127.0.0.1:' + common.PORT];
+  var args = ['s_client', '-quiet', '-tls1_1',
+              '-connect', '127.0.0.1:' + common.PORT];
   var client = spawn(common.opensslCli, args);
   var out = '';
   client.stderr.setEncoding('utf8');
diff --git a/test/parallel/test-tls-cert-regression.js b/test/parallel/test-tls-cert-regression.js
index c7b1742856..24bc424274 100644
--- a/test/parallel/test-tls-cert-regression.js
+++ b/test/parallel/test-tls-cert-regression.js
@@ -1,3 +1,4 @@
+'use strict';
 var assert = require('assert');
 var common = require('../common');
 
diff --git a/test/parallel/test-tls-check-server-identity.js b/test/parallel/test-tls-check-server-identity.js
index 85413b62e3..e40cbb0f9d 100644
--- a/test/parallel/test-tls-check-server-identity.js
+++ b/test/parallel/test-tls-check-server-identity.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var util = require('util');
diff --git a/test/parallel/test-tls-client-abort.js b/test/parallel/test-tls-client-abort.js
index a2a4bba5bb..25e44716c1 100644
--- a/test/parallel/test-tls-client-abort.js
+++ b/test/parallel/test-tls-client-abort.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-tls-client-abort2.js b/test/parallel/test-tls-client-abort2.js
index 7874d3d25a..b64482b58d 100644
--- a/test/parallel/test-tls-client-abort2.js
+++ b/test/parallel/test-tls-client-abort2.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-tls-client-default-ciphers.js b/test/parallel/test-tls-client-default-ciphers.js
index e1422bac6f..5da5717331 100644
--- a/test/parallel/test-tls-client-default-ciphers.js
+++ b/test/parallel/test-tls-client-default-ciphers.js
@@ -1,3 +1,4 @@
+'use strict';
 var assert = require('assert');
 var common = require('../common');
 
@@ -15,7 +16,7 @@ function test1() {
   tls.createSecureContext = function(options) {
     ciphers = options.ciphers;
     throw new Done();
-  }
+  };
 
   try {
     var s = tls.connect(common.PORT);
diff --git a/test/parallel/test-tls-client-destroy-soon.js b/test/parallel/test-tls-client-destroy-soon.js
index 08b261a722..6a1a899103 100644
--- a/test/parallel/test-tls-client-destroy-soon.js
+++ b/test/parallel/test-tls-client-destroy-soon.js
@@ -1,3 +1,4 @@
+'use strict';
 // Create an ssl server.  First connection, validate that not resume.
 // Cache session and close connection.  Use session on second connection.
 // ASSERT resumption.
diff --git a/test/parallel/test-tls-client-reject.js b/test/parallel/test-tls-client-reject.js
index 887ff283ad..9e09493c6a 100644
--- a/test/parallel/test-tls-client-reject.js
+++ b/test/parallel/test-tls-client-reject.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-tls-client-resume.js b/test/parallel/test-tls-client-resume.js
index 75d96b6933..8b36224a7f 100644
--- a/test/parallel/test-tls-client-resume.js
+++ b/test/parallel/test-tls-client-resume.js
@@ -1,3 +1,4 @@
+'use strict';
 // Create an ssl server.  First connection, validate that not resume.
 // Cache session and close connection.  Use session on second connection.
 // ASSERT resumption.
diff --git a/test/parallel/test-tls-client-verify.js b/test/parallel/test-tls-client-verify.js
index bdbde6f993..f206929f59 100644
--- a/test/parallel/test-tls-client-verify.js
+++ b/test/parallel/test-tls-client-verify.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-tls-close-notify.js b/test/parallel/test-tls-close-notify.js
index 3960a62694..cfb9aab0d9 100644
--- a/test/parallel/test-tls-close-notify.js
+++ b/test/parallel/test-tls-close-notify.js
@@ -1,3 +1,4 @@
+'use strict';
 var assert = require('assert');
 var common = require('../common');
 
diff --git a/test/parallel/test-tls-connect-given-socket.js b/test/parallel/test-tls-connect-given-socket.js
index e309d824ab..9e8170b13a 100644
--- a/test/parallel/test-tls-connect-given-socket.js
+++ b/test/parallel/test-tls-connect-given-socket.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-tls-connect-no-host.js b/test/parallel/test-tls-connect-no-host.js
index 2faf97867c..6d04890d4d 100644
--- a/test/parallel/test-tls-connect-no-host.js
+++ b/test/parallel/test-tls-connect-no-host.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 
 if (!common.hasCrypto) {
@@ -29,6 +30,6 @@ var socket = tls.connect({
     // Error: Hostname/IP doesn't match certificate's altnames:
     //   "Host: undefined. is not cert's CN: localhost"
 }, function() {
-    assert(socket.authorized);
-    process.exit();
+  assert(socket.authorized);
+  process.exit();
 });
diff --git a/test/parallel/test-tls-connect-pipe.js b/test/parallel/test-tls-connect-pipe.js
index 70daa0d75a..bded532720 100644
--- a/test/parallel/test-tls-connect-pipe.js
+++ b/test/parallel/test-tls-connect-pipe.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-tls-connect-simple.js b/test/parallel/test-tls-connect-simple.js
index 04eb5f408a..feaa7c887b 100644
--- a/test/parallel/test-tls-connect-simple.js
+++ b/test/parallel/test-tls-connect-simple.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-tls-connect-stream-writes.js b/test/parallel/test-tls-connect-stream-writes.js
index 0bf1db12b7..4187c9b439 100644
--- a/test/parallel/test-tls-connect-stream-writes.js
+++ b/test/parallel/test-tls-connect-stream-writes.js
@@ -1,3 +1,4 @@
+'use strict';
 var assert = require('assert'),
     fs = require('fs'),
     path = require('path'),
diff --git a/test/parallel/test-tls-connect.js b/test/parallel/test-tls-connect.js
index f74dc08953..160d874bed 100644
--- a/test/parallel/test-tls-connect.js
+++ b/test/parallel/test-tls-connect.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-tls-delayed-attach.js b/test/parallel/test-tls-delayed-attach.js
index fba10ceffd..0073159244 100644
--- a/test/parallel/test-tls-delayed-attach.js
+++ b/test/parallel/test-tls-delayed-attach.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-tls-dhe.js b/test/parallel/test-tls-dhe.js
index eb59c84957..5c9eb87b2e 100644
--- a/test/parallel/test-tls-dhe.js
+++ b/test/parallel/test-tls-dhe.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-tls-ecdh-disable.js b/test/parallel/test-tls-ecdh-disable.js
index 1799ec454c..1ed4ea3573 100644
--- a/test/parallel/test-tls-ecdh-disable.js
+++ b/test/parallel/test-tls-ecdh-disable.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-tls-ecdh.js b/test/parallel/test-tls-ecdh.js
index 042491672f..cd144d79e0 100644
--- a/test/parallel/test-tls-ecdh.js
+++ b/test/parallel/test-tls-ecdh.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-tls-econnreset.js b/test/parallel/test-tls-econnreset.js
index c339fc5be6..f451df6847 100644
--- a/test/parallel/test-tls-econnreset.js
+++ b/test/parallel/test-tls-econnreset.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-tls-fast-writing.js b/test/parallel/test-tls-fast-writing.js
index e9245aa0d5..24e8bfc688 100644
--- a/test/parallel/test-tls-fast-writing.js
+++ b/test/parallel/test-tls-fast-writing.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-tls-friendly-error-message.js b/test/parallel/test-tls-friendly-error-message.js
index efff0c66a3..b2f2de137d 100644
--- a/test/parallel/test-tls-friendly-error-message.js
+++ b/test/parallel/test-tls-friendly-error-message.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-tls-getcipher.js b/test/parallel/test-tls-getcipher.js
index 414010c033..12e3b8f9c6 100644
--- a/test/parallel/test-tls-getcipher.js
+++ b/test/parallel/test-tls-getcipher.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-tls-handshake-nohang.js b/test/parallel/test-tls-handshake-nohang.js
index 73869892fb..181d6408e0 100644
--- a/test/parallel/test-tls-handshake-nohang.js
+++ b/test/parallel/test-tls-handshake-nohang.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-tls-hello-parser-failure.js b/test/parallel/test-tls-hello-parser-failure.js
index 463fdaa44b..3ed82c536a 100644
--- a/test/parallel/test-tls-hello-parser-failure.js
+++ b/test/parallel/test-tls-hello-parser-failure.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
@@ -40,7 +41,7 @@ var server = tls.createServer(options, function(c) {
     }
   });
 
-  client.on('close', function (hadError) {
+  client.on('close', function(hadError) {
     assert.strictEqual(hadError, true, 'Client never errored');
   });
 });
diff --git a/test/parallel/test-tls-inception.js b/test/parallel/test-tls-inception.js
index 7fd0b813d6..76e6fe077f 100644
--- a/test/parallel/test-tls-inception.js
+++ b/test/parallel/test-tls-inception.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
@@ -20,7 +21,7 @@ options = {
 };
 
 // the "proxy" server
-a = tls.createServer(options, function (socket) {
+a = tls.createServer(options, function(socket) {
   var options = {
     host: '127.0.0.1',
     port: b.address().port,
@@ -36,16 +37,16 @@ a = tls.createServer(options, function (socket) {
 });
 
 // the "target" server
-b = tls.createServer(options, function (socket) {
+b = tls.createServer(options, function(socket) {
   socket.end('hello');
 });
 
-process.on('exit', function () {
+process.on('exit', function() {
   assert(gotHello);
 });
 
-a.listen(common.PORT, function () {
-  b.listen(common.PORT + 1, function () {
+a.listen(common.PORT, function() {
+  b.listen(common.PORT + 1, function() {
     options = {
       host: '127.0.0.1',
       port: a.address().port,
@@ -58,11 +59,11 @@ a.listen(common.PORT, function () {
       rejectUnauthorized: false
     });
     ssl.setEncoding('utf8');
-    ssl.once('data', function (data) {
+    ssl.once('data', function(data) {
       assert.equal('hello', data);
       gotHello = true;
     });
-    ssl.on('end', function () {
+    ssl.on('end', function() {
       ssl.end();
       a.close();
       b.close();
diff --git a/test/parallel/test-tls-interleave.js b/test/parallel/test-tls-interleave.js
index 96a7a60038..e726e16998 100644
--- a/test/parallel/test-tls-interleave.js
+++ b/test/parallel/test-tls-interleave.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-tls-invoke-queued.js b/test/parallel/test-tls-invoke-queued.js
index c6e9415882..f9607e1f4f 100644
--- a/test/parallel/test-tls-invoke-queued.js
+++ b/test/parallel/test-tls-invoke-queued.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-tls-js-stream.js b/test/parallel/test-tls-js-stream.js
index 12c3381cb4..e156f446f5 100644
--- a/test/parallel/test-tls-js-stream.js
+++ b/test/parallel/test-tls-js-stream.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-tls-junk-closes-server.js b/test/parallel/test-tls-junk-closes-server.js
index 3fd129cbf6..01a83ef214 100644
--- a/test/parallel/test-tls-junk-closes-server.js
+++ b/test/parallel/test-tls-junk-closes-server.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 
 if (!common.hasCrypto) {
diff --git a/test/parallel/test-tls-key-mismatch.js b/test/parallel/test-tls-key-mismatch.js
index cd7ad605a8..35da468749 100644
--- a/test/parallel/test-tls-key-mismatch.js
+++ b/test/parallel/test-tls-key-mismatch.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-tls-max-send-fragment.js b/test/parallel/test-tls-max-send-fragment.js
index 4033b308ac..3e41cfa45c 100644
--- a/test/parallel/test-tls-max-send-fragment.js
+++ b/test/parallel/test-tls-max-send-fragment.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-tls-multi-key.js b/test/parallel/test-tls-multi-key.js
index 85ff5e808c..76aa97d1ff 100644
--- a/test/parallel/test-tls-multi-key.js
+++ b/test/parallel/test-tls-multi-key.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-tls-no-cert-required.js b/test/parallel/test-tls-no-cert-required.js
index 75afc11099..02bbb6b664 100644
--- a/test/parallel/test-tls-no-cert-required.js
+++ b/test/parallel/test-tls-no-cert-required.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 
 if (!common.hasCrypto) {
diff --git a/test/parallel/test-tls-no-rsa-key.js b/test/parallel/test-tls-no-rsa-key.js
index 389cd329c6..fd64438ead 100644
--- a/test/parallel/test-tls-no-rsa-key.js
+++ b/test/parallel/test-tls-no-rsa-key.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-tls-no-sslv23.js b/test/parallel/test-tls-no-sslv23.js
index 56fd89f76a..931bf5dba0 100644
--- a/test/parallel/test-tls-no-sslv23.js
+++ b/test/parallel/test-tls-no-sslv23.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-tls-no-sslv3.js b/test/parallel/test-tls-no-sslv3.js
index 0fc0dcc3ae..4e1975a1e0 100644
--- a/test/parallel/test-tls-no-sslv3.js
+++ b/test/parallel/test-tls-no-sslv3.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-tls-npn-server-client.js b/test/parallel/test-tls-npn-server-client.js
index 406751b028..bebb6799b9 100644
--- a/test/parallel/test-tls-npn-server-client.js
+++ b/test/parallel/test-tls-npn-server-client.js
@@ -1,3 +1,4 @@
+'use strict';
 if (!process.features.tls_npn) {
   console.error('Skipping because node compiled without OpenSSL or ' +
                 'with old OpenSSL version.');
diff --git a/test/parallel/test-tls-ocsp-callback.js b/test/parallel/test-tls-ocsp-callback.js
index a9ac6ffa17..73f1c5772a 100644
--- a/test/parallel/test-tls-ocsp-callback.js
+++ b/test/parallel/test-tls-ocsp-callback.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 
 if (!process.features.tls_ocsp) {
diff --git a/test/parallel/test-tls-on-empty-socket.js b/test/parallel/test-tls-on-empty-socket.js
index f4866701e2..8d95a99720 100644
--- a/test/parallel/test-tls-on-empty-socket.js
+++ b/test/parallel/test-tls-on-empty-socket.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-tls-over-http-tunnel.js b/test/parallel/test-tls-over-http-tunnel.js
index c851f02a57..cf7ab78685 100644
--- a/test/parallel/test-tls-over-http-tunnel.js
+++ b/test/parallel/test-tls-over-http-tunnel.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-tls-passphrase.js b/test/parallel/test-tls-passphrase.js
index f1253ee51b..ce68fce5f0 100644
--- a/test/parallel/test-tls-passphrase.js
+++ b/test/parallel/test-tls-passphrase.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-tls-pause.js b/test/parallel/test-tls-pause.js
index 95f293d234..f9d68f1395 100644
--- a/test/parallel/test-tls-pause.js
+++ b/test/parallel/test-tls-pause.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-tls-peer-certificate-encoding.js b/test/parallel/test-tls-peer-certificate-encoding.js
index 536bfae203..533b9126cd 100644
--- a/test/parallel/test-tls-peer-certificate-encoding.js
+++ b/test/parallel/test-tls-peer-certificate-encoding.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-tls-peer-certificate-multi-keys.js b/test/parallel/test-tls-peer-certificate-multi-keys.js
index 3488600e27..fde55af50b 100644
--- a/test/parallel/test-tls-peer-certificate-multi-keys.js
+++ b/test/parallel/test-tls-peer-certificate-multi-keys.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-tls-peer-certificate.js b/test/parallel/test-tls-peer-certificate.js
index afd88531ea..8164154779 100644
--- a/test/parallel/test-tls-peer-certificate.js
+++ b/test/parallel/test-tls-peer-certificate.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-tls-request-timeout.js b/test/parallel/test-tls-request-timeout.js
index a5dcdd37e4..8915dee1f1 100644
--- a/test/parallel/test-tls-request-timeout.js
+++ b/test/parallel/test-tls-request-timeout.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-tls-securepair-server.js b/test/parallel/test-tls-securepair-server.js
index 99bd4dd6f9..7ddba939ba 100644
--- a/test/parallel/test-tls-securepair-server.js
+++ b/test/parallel/test-tls-securepair-server.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-tls-server-verify.js b/test/parallel/test-tls-server-verify.js
index 0204bc5d1f..f30134f04a 100644
--- a/test/parallel/test-tls-server-verify.js
+++ b/test/parallel/test-tls-server-verify.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 
 if (!common.opensslCli) {
diff --git a/test/parallel/test-tls-session-cache.js b/test/parallel/test-tls-session-cache.js
index 8ba2deec2e..7ba063a3a0 100644
--- a/test/parallel/test-tls-session-cache.js
+++ b/test/parallel/test-tls-session-cache.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 
 if (!common.opensslCli) {
diff --git a/test/parallel/test-tls-set-ciphers.js b/test/parallel/test-tls-set-ciphers.js
index ba4341633b..f5284c1b58 100644
--- a/test/parallel/test-tls-set-ciphers.js
+++ b/test/parallel/test-tls-set-ciphers.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 
 if (!common.opensslCli) {
diff --git a/test/parallel/test-tls-set-encoding.js b/test/parallel/test-tls-set-encoding.js
index d73572c93b..fa0d72b5ad 100644
--- a/test/parallel/test-tls-set-encoding.js
+++ b/test/parallel/test-tls-set-encoding.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-tls-sni-option.js b/test/parallel/test-tls-sni-option.js
index 3768c7eaac..68ef2caa98 100644
--- a/test/parallel/test-tls-sni-option.js
+++ b/test/parallel/test-tls-sni-option.js
@@ -1,3 +1,4 @@
+'use strict';
 if (!process.features.tls_sni) {
   console.error('Skipping because node compiled without OpenSSL or ' +
                 'with old OpenSSL version.');
@@ -146,6 +147,6 @@ process.on('exit', function() {
   assert.deepEqual(serverResults, ['a.example.com', 'b.example.com',
                                    'c.wrong.com', null]);
   assert.deepEqual(clientResults, [true, true, false, false]);
-  assert.deepEqual(clientErrors, [null, null, null, "socket hang up"]);
-  assert.deepEqual(serverErrors, [null, null, null, "Invalid SNI context"]);
+  assert.deepEqual(clientErrors, [null, null, null, 'socket hang up']);
+  assert.deepEqual(serverErrors, [null, null, null, 'Invalid SNI context']);
 });
diff --git a/test/parallel/test-tls-sni-server-client.js b/test/parallel/test-tls-sni-server-client.js
index a1d867233b..dec829face 100644
--- a/test/parallel/test-tls-sni-server-client.js
+++ b/test/parallel/test-tls-sni-server-client.js
@@ -1,3 +1,4 @@
+'use strict';
 if (!process.features.tls_sni) {
   console.error('Skipping because node compiled without OpenSSL or ' +
                 'with old OpenSSL version.');
diff --git a/test/parallel/test-tls-ticket-cluster.js b/test/parallel/test-tls-ticket-cluster.js
index 1b20e5ac8e..a9798df059 100644
--- a/test/parallel/test-tls-ticket-cluster.js
+++ b/test/parallel/test-tls-ticket-cluster.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-tls-ticket.js b/test/parallel/test-tls-ticket.js
index cf5cae9c8a..450f6b54a5 100644
--- a/test/parallel/test-tls-ticket.js
+++ b/test/parallel/test-tls-ticket.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
@@ -31,7 +32,9 @@ function createServer() {
   return server;
 }
 
-var servers = [ createServer(), createServer(), createServer(), createServer(), createServer(), createServer() ];
+var servers = [ createServer(), createServer(),
+                createServer(), createServer(),
+                createServer(), createServer() ];
 
 // Create one TCP server and balance sockets to multiple TLS server instances
 var shared = net.createServer(function(c) {
diff --git a/test/parallel/test-tls-timeout-server-2.js b/test/parallel/test-tls-timeout-server-2.js
index dc3d52da01..f2dca0b9ab 100644
--- a/test/parallel/test-tls-timeout-server-2.js
+++ b/test/parallel/test-tls-timeout-server-2.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-tls-timeout-server.js b/test/parallel/test-tls-timeout-server.js
index 47845fae39..4a9265079b 100644
--- a/test/parallel/test-tls-timeout-server.js
+++ b/test/parallel/test-tls-timeout-server.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-tls-wrap-timeout.js b/test/parallel/test-tls-wrap-timeout.js
index 75952da6a3..af1d843178 100644
--- a/test/parallel/test-tls-wrap-timeout.js
+++ b/test/parallel/test-tls-wrap-timeout.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-tls-zero-clear-in.js b/test/parallel/test-tls-zero-clear-in.js
index 38b21f401e..6eeba92585 100644
--- a/test/parallel/test-tls-zero-clear-in.js
+++ b/test/parallel/test-tls-zero-clear-in.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-tty-stdout-end.js b/test/parallel/test-tty-stdout-end.js
index a2f3ad12f4..190acae428 100644
--- a/test/parallel/test-tty-stdout-end.js
+++ b/test/parallel/test-tty-stdout-end.js
@@ -1,3 +1,4 @@
+'use strict';
 // Can't test this when 'make test' doesn't assign a tty to the stdout.
 var common = require('../common');
 var assert = require('assert');
diff --git a/test/parallel/test-tty-wrap.js b/test/parallel/test-tty-wrap.js
index 1cd014992d..370c959ea2 100644
--- a/test/parallel/test-tty-wrap.js
+++ b/test/parallel/test-tty-wrap.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-umask.js b/test/parallel/test-umask.js
index 84c3441218..94d3a1d06f 100644
--- a/test/parallel/test-umask.js
+++ b/test/parallel/test-umask.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-url.js b/test/parallel/test-url.js
index 9b5211d29b..4e3251a9da 100644
--- a/test/parallel/test-url.js
+++ b/test/parallel/test-url.js
@@ -1,3 +1,5 @@
+/* eslint-disable max-len */
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
@@ -553,7 +555,6 @@ var parseTests = {
 
   'http://bucket_name.s3.amazonaws.com/image.jpg': {
     protocol: 'http:',
-    'slashes': true,
     slashes: true,
     host: 'bucket_name.s3.amazonaws.com',
     hostname: 'bucket_name.s3.amazonaws.com',
@@ -857,11 +858,11 @@ var parseTests = {
 };
 
 for (var u in parseTests) {
-  var actual = url.parse(u),
-      spaced = url.parse('     \t  ' + u + '\n\t');
-      expected = parseTests[u];
+  var actual = url.parse(u);
+  var spaced = url.parse('     \t  ' + u + '\n\t');
+  var expected = parseTests[u];
 
-  Object.keys(actual).forEach(function (i) {
+  Object.keys(actual).forEach(function(i) {
     if (expected[i] === undefined && actual[i] === null) {
       expected[i] = null;
     }
@@ -1097,7 +1098,7 @@ var formatTests = {
     query: {
       foo: 'theA1'
     },
-    hash: "#bar"
+    hash: '#bar'
   },
 
   // `#`,`?` in path + `#` in query
@@ -1107,7 +1108,7 @@ var formatTests = {
     query: {
       foo: 'the#1'
     },
-    hash: "#bar"
+    hash: '#bar'
   },
 
   // `?` and `#` in path and search
@@ -1269,7 +1270,7 @@ var relativeTests2 = [
   ['g?y#s', bases[0], 'http://a/b/c/g?y#s'],
   [';x', bases[0], 'http://a/b/c/;x'],
   ['g;x', bases[0], 'http://a/b/c/g;x'],
-  ['g;x?y#s' , bases[0], 'http://a/b/c/g;x?y#s'],
+  ['g;x?y#s', bases[0], 'http://a/b/c/g;x?y#s'],
   // changed with RFC 2396bis
   //('', bases[0], CURRENT_DOC_URI],
   ['', bases[0], 'http://a/b/c/d;p?q'],
@@ -1280,7 +1281,7 @@ var relativeTests2 = [
   ['../g', bases[0], 'http://a/b/g'],
   ['../..', bases[0], 'http://a/'],
   ['../../', bases[0], 'http://a/'],
-  ['../../g' , bases[0], 'http://a/g'],
+  ['../../g', bases[0], 'http://a/g'],
   ['../../../g', bases[0], ('http://a/../g', 'http://a/g')],
   ['../../../../g', bases[0], ('http://a/../../g', 'http://a/g')],
   // changed with RFC 2396bis
@@ -1319,16 +1320,16 @@ var relativeTests2 = [
   //('?y', bases[1], 'http://a/b/c/?y'],
   ['?y', bases[1], 'http://a/b/c/d;p?y'],
   ['g?y', bases[1], 'http://a/b/c/g?y'],
-  ['g?y/./x' , bases[1], 'http://a/b/c/g?y/./x'],
+  ['g?y/./x', bases[1], 'http://a/b/c/g?y/./x'],
   ['g?y/../x', bases[1], 'http://a/b/c/g?y/../x'],
   ['g#s', bases[1], 'http://a/b/c/g#s'],
-  ['g#s/./x' , bases[1], 'http://a/b/c/g#s/./x'],
+  ['g#s/./x', bases[1], 'http://a/b/c/g#s/./x'],
   ['g#s/../x', bases[1], 'http://a/b/c/g#s/../x'],
   ['./', bases[1], 'http://a/b/c/'],
   ['../', bases[1], 'http://a/b/'],
   ['../g', bases[1], 'http://a/b/g'],
   ['../../', bases[1], 'http://a/'],
-  ['../../g' , bases[1], 'http://a/g'],
+  ['../../g', bases[1], 'http://a/g'],
 
   // http://gbiv.com/protocols/uri/test/rel_examples3.html
   // slashes in path params
@@ -1345,7 +1346,7 @@ var relativeTests2 = [
   ['../', bases[2], 'http://a/b/c/'],
   ['../g', bases[2], 'http://a/b/c/g'],
   ['../../', bases[2], 'http://a/b/'],
-  ['../../g' , bases[2], 'http://a/b/g'],
+  ['../../g', bases[2], 'http://a/b/g'],
 
   // http://gbiv.com/protocols/uri/test/rel_examples4.html
   // double and triple slash, unknown scheme
@@ -1362,7 +1363,7 @@ var relativeTests2 = [
   ['../g', bases[3], 'fred:///s//a/g'],
 
   ['../../', bases[3], 'fred:///s//'],
-  ['../../g' , bases[3], 'fred:///s//g'],
+  ['../../g', bases[3], 'fred:///s//g'],
   ['../../../g', bases[3], 'fred:///s/g'],
   // may change to fred:///s//a/../../../g
   ['../../../../g', bases[3], 'fred:///g'],
@@ -1381,7 +1382,7 @@ var relativeTests2 = [
   ['../', bases[4], 'http:///s//a/'],
   ['../g', bases[4], 'http:///s//a/g'],
   ['../../', bases[4], 'http:///s//'],
-  ['../../g' , bases[4], 'http:///s//g'],
+  ['../../g', bases[4], 'http:///s//g'],
   // may change to http:///s//a/../../g
   ['../../../g', bases[4], 'http:///s/g'],
   // may change to http:///s//a/../../../g
@@ -1569,10 +1570,10 @@ var throws = [
   true,
   false,
   0,
-  function () {}
+  function() {}
 ];
 for (var i = 0; i < throws.length; i++) {
-  assert.throws(function () { url.format(throws[i]); }, TypeError);
+  assert.throws(function() { url.format(throws[i]); }, TypeError);
 };
 assert(url.format('') === '');
 assert(url.format({}) === '');
diff --git a/test/parallel/test-utf8-scripts.js b/test/parallel/test-utf8-scripts.js
index b9bef97a5e..3a89128350 100644
--- a/test/parallel/test-utf8-scripts.js
+++ b/test/parallel/test-utf8-scripts.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-util-format.js b/test/parallel/test-util-format.js
index 7155094198..6761671e19 100644
--- a/test/parallel/test-util-format.js
+++ b/test/parallel/test-util-format.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var util = require('util');
@@ -57,8 +58,10 @@ assert.equal(util.format('%%%s%%%%', 'hi'), '%hi%%');
 assert.equal(util.format(new Error('foo')), '[Error: foo]');
 function CustomError(msg) {
   Error.call(this);
-  Object.defineProperty(this, 'message', { value: msg, enumerable: false });
-  Object.defineProperty(this, 'name', { value: 'CustomError', enumerable: false });
+  Object.defineProperty(this, 'message',
+                        { value: msg, enumerable: false });
+  Object.defineProperty(this, 'name',
+                        { value: 'CustomError', enumerable: false });
 }
 util.inherits(CustomError, Error);
 assert.equal(util.format(new CustomError('bar')), '[CustomError: bar]');
diff --git a/test/parallel/test-util-inspect.js b/test/parallel/test-util-inspect.js
index ac4bb0e847..f583005ce9 100644
--- a/test/parallel/test-util-inspect.js
+++ b/test/parallel/test-util-inspect.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var util = require('util');
@@ -92,7 +93,7 @@ var w = {
   '\\\\': 2,
   '\\\\\\': 3,
   '\\\\\\\\': 4,
-}
+};
 
 var y = ['a', 'b', 'c'];
 y['\\\\\\'] = 'd';
@@ -112,16 +113,16 @@ function test_color_style(style, input, implicit) {
   var with_color = util.inspect(input, false, 0, true);
   var expect = '\u001b[' + color[0] + 'm' + without_color +
                '\u001b[' + color[1] + 'm';
-  assert.equal(with_color, expect, 'util.inspect color for style '+style);
+  assert.equal(with_color, expect, 'util.inspect color for style ' + style);
 }
 
-test_color_style('special', function(){});
+test_color_style('special', function() {});
 test_color_style('number', 123.456);
 test_color_style('boolean', true);
 test_color_style('undefined', undefined);
 test_color_style('null', null);
 test_color_style('string', 'test string');
-test_color_style('date', new Date);
+test_color_style('date', new Date());
 test_color_style('regexp', /regexp/);
 
 // an object with "hasOwnProperty" overwritten should not throw
@@ -146,10 +147,14 @@ assert(util.inspect(subject, { depth: null }).indexOf('{ d: 0 }') !== -1);
 // "customInspect" option can enable/disable calling inspect() on objects
 subject = { inspect: function() { return 123; } };
 
-assert(util.inspect(subject, { customInspect: true }).indexOf('123') !== -1);
-assert(util.inspect(subject, { customInspect: true }).indexOf('inspect') === -1);
-assert(util.inspect(subject, { customInspect: false }).indexOf('123') === -1);
-assert(util.inspect(subject, { customInspect: false }).indexOf('inspect') !== -1);
+assert(util.inspect(subject,
+                    { customInspect: true }).indexOf('123') !== -1);
+assert(util.inspect(subject,
+                    { customInspect: true }).indexOf('inspect') === -1);
+assert(util.inspect(subject,
+                    { customInspect: false }).indexOf('123') === -1);
+assert(util.inspect(subject,
+                    { customInspect: false }).indexOf('inspect') !== -1);
 
 // custom inspect() functions should be able to return other Objects
 subject.inspect = function() { return { foo: 'bar' }; };
@@ -166,7 +171,7 @@ util.inspect(subject, { customInspectOptions: true });
 function test_lines(input) {
   var count_lines = function(str) {
     return (str.match(/\n/g) || []).length;
-  }
+  };
 
   var without_color = util.inspect(input);
   var with_color = util.inspect(input, {colors: true});
@@ -232,19 +237,20 @@ if (typeof Symbol !== 'undefined') {
   subject[Symbol('symbol')] = 42;
 
   assert.equal(util.inspect(subject), '[ 1, 2, 3 ]');
-  assert.equal(util.inspect(subject, options), '[ 1, 2, 3, [length]: 3, [Symbol(symbol)]: 42 ]');
+  assert.equal(util.inspect(subject, options),
+      '[ 1, 2, 3, [length]: 3, [Symbol(symbol)]: 42 ]');
 
 }
 
 // test Set
-assert.equal(util.inspect(new Set), 'Set {}');
+assert.equal(util.inspect(new Set()), 'Set {}');
 assert.equal(util.inspect(new Set([1, 2, 3])), 'Set { 1, 2, 3 }');
 var set = new Set(['foo']);
 set.bar = 42;
 assert.equal(util.inspect(set, true), 'Set { \'foo\', [size]: 1, bar: 42 }');
 
 // test Map
-assert.equal(util.inspect(new Map), 'Map {}');
+assert.equal(util.inspect(new Map()), 'Map {}');
 assert.equal(util.inspect(new Map([[1, 'a'], [2, 'b'], [3, 'c']])),
              'Map { 1 => \'a\', 2 => \'b\', 3 => \'c\' }');
 var map = new Map([['foo', null]]);
@@ -265,7 +271,7 @@ assert.equal(util.inspect(promise), 'Promise { \'foo\', bar: 42 }');
 // a bonafide native Promise.
 var oldPromise = Promise;
 global.Promise = function() { this.bar = 42; };
-assert.equal(util.inspect(new Promise), '{ bar: 42 }');
+assert.equal(util.inspect(new Promise()), '{ bar: 42 }');
 global.Promise = oldPromise;
 
 
@@ -299,4 +305,4 @@ checkAlignment(function() {
   return obj;
 }());
 checkAlignment(new Set(big_array));
-checkAlignment(new Map(big_array.map(function (y) { return [y, null] })));
+checkAlignment(new Map(big_array.map(function(y) { return [y, null]; })));
diff --git a/test/parallel/test-util-log.js b/test/parallel/test-util-log.js
index f157c80bec..fbe3963348 100644
--- a/test/parallel/test-util-log.js
+++ b/test/parallel/test-util-log.js
@@ -1,3 +1,4 @@
+'use strict';
 var assert = require('assert');
 var util = require('util');
 
@@ -17,7 +18,7 @@ var tests = [
   {input: null, output: 'null'},
   {input: false, output: 'false'},
   {input: 42, output: '42'},
-  {input: function(){}, output: '[Function]'},
+  {input: function() {}, output: '[Function]'},
   {input: parseInt('not a number', 10), output: 'NaN'},
   {input: {answer: 42}, output: '{ answer: 42 }'},
   {input: [1,2,3], output: '[ 1, 2, 3 ]'}
diff --git a/test/parallel/test-util.js b/test/parallel/test-util.js
index 03456d6439..2795d3ecd6 100644
--- a/test/parallel/test-util.js
+++ b/test/parallel/test-util.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var util = require('util');
@@ -13,7 +14,7 @@ assert.equal(true, util.isArray(context('Array')()));
 assert.equal(false, util.isArray({}));
 assert.equal(false, util.isArray({ push: function() {} }));
 assert.equal(false, util.isArray(/regexp/));
-assert.equal(false, util.isArray(new Error));
+assert.equal(false, util.isArray(new Error()));
 assert.equal(false, util.isArray(Object.create(Array.prototype)));
 
 // isRegExp
@@ -33,13 +34,13 @@ assert.equal(true, util.isDate(new (context('Date'))));
 assert.equal(false, util.isDate(Date()));
 assert.equal(false, util.isDate({}));
 assert.equal(false, util.isDate([]));
-assert.equal(false, util.isDate(new Error));
+assert.equal(false, util.isDate(new Error()));
 assert.equal(false, util.isDate(Object.create(Date.prototype)));
 
 // isError
-assert.equal(true, util.isError(new Error));
-assert.equal(true, util.isError(new TypeError));
-assert.equal(true, util.isError(new SyntaxError));
+assert.equal(true, util.isError(new Error()));
+assert.equal(true, util.isError(new TypeError()));
+assert.equal(true, util.isError(new SyntaxError()));
 assert.equal(true, util.isError(new (context('Error'))));
 assert.equal(true, util.isError(new (context('TypeError'))));
 assert.equal(true, util.isError(new (context('SyntaxError'))));
@@ -53,11 +54,11 @@ assert.ok(util.isObject({}) === true);
 
 // isPrimitive
 assert.equal(false, util.isPrimitive({}));
-assert.equal(false, util.isPrimitive(new Error));
+assert.equal(false, util.isPrimitive(new Error()));
 assert.equal(false, util.isPrimitive(new Date()));
 assert.equal(false, util.isPrimitive([]));
 assert.equal(false, util.isPrimitive(/regexp/));
-assert.equal(false, util.isPrimitive(function(){}));
+assert.equal(false, util.isPrimitive(function() {}));
 assert.equal(false, util.isPrimitive(new Number(1)));
 assert.equal(false, util.isPrimitive(new String('bla')));
 assert.equal(false, util.isPrimitive(new Boolean(true)));
@@ -81,7 +82,7 @@ assert.deepEqual(util._extend({a:1, b:2}, {b:3}), {a:1, b:3});
 
 // inherits
 var ctor = function() {};
-assert.throws(function() { util.inherits(ctor, {}) }, TypeError);
-assert.throws(function() { util.inherits(ctor, null) }, TypeError);
-assert.throws(function() { util.inherits(null, ctor) }, TypeError);
-assert.doesNotThrow(function() { util.inherits(ctor, ctor) }, TypeError);
+assert.throws(function() { util.inherits(ctor, {}); }, TypeError);
+assert.throws(function() { util.inherits(ctor, null); }, TypeError);
+assert.throws(function() { util.inherits(null, ctor); }, TypeError);
+assert.doesNotThrow(function() { util.inherits(ctor, ctor); }, TypeError);
diff --git a/test/parallel/test-v8-flag-type-check.js b/test/parallel/test-v8-flag-type-check.js
index 1bb501df43..68bf30dba3 100644
--- a/test/parallel/test-v8-flag-type-check.js
+++ b/test/parallel/test-v8-flag-type-check.js
@@ -1,6 +1,7 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var v8 = require('v8');
 
-assert.throws(function() {v8.setFlagsFromString(1)}, TypeError);
-assert.throws(function() {v8.setFlagsFromString()}, TypeError);
+assert.throws(function() {v8.setFlagsFromString(1);}, TypeError);
+assert.throws(function() {v8.setFlagsFromString();}, TypeError);
diff --git a/test/parallel/test-v8-flags.js b/test/parallel/test-v8-flags.js
index 886583e4c5..d21cbc6c26 100644
--- a/test/parallel/test-v8-flags.js
+++ b/test/parallel/test-v8-flags.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var v8 = require('v8');
@@ -8,5 +9,5 @@ assert(eval('%_IsSmi(42)'));
 assert(vm.runInThisContext('%_IsSmi(42)'));
 
 v8.setFlagsFromString('--noallow_natives_syntax');
-assert.throws(function() { eval('%_IsSmi(42)') }, SyntaxError);
-assert.throws(function() { vm.runInThisContext('%_IsSmi(42)') }, SyntaxError);
+assert.throws(function() { eval('%_IsSmi(42)'); }, SyntaxError);
+assert.throws(function() { vm.runInThisContext('%_IsSmi(42)'); }, SyntaxError);
diff --git a/test/parallel/test-v8-stats.js b/test/parallel/test-v8-stats.js
index 7acb9db1e0..e48c1d7036 100644
--- a/test/parallel/test-v8-stats.js
+++ b/test/parallel/test-v8-stats.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var v8 = require('v8');
diff --git a/test/parallel/test-vm-basic.js b/test/parallel/test-vm-basic.js
index 092aa1a636..96c615c44a 100644
--- a/test/parallel/test-vm-basic.js
+++ b/test/parallel/test-vm-basic.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var vm = require('vm');
diff --git a/test/parallel/test-vm-context-async-script.js b/test/parallel/test-vm-context-async-script.js
index 979fc24a16..e146d48343 100644
--- a/test/parallel/test-vm-context-async-script.js
+++ b/test/parallel/test-vm-context-async-script.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var vm = require('vm');
@@ -7,7 +8,7 @@ var sandbox = { setTimeout: setTimeout };
 var ctx = vm.createContext(sandbox);
 
 vm.runInContext('setTimeout(function() { x = 3; }, 0);', ctx);
-setTimeout(function () {
+setTimeout(function() {
   assert.strictEqual(sandbox.x, 3);
   assert.strictEqual(ctx.x, 3);
 }, 1);
diff --git a/test/parallel/test-vm-context-property-forwarding.js b/test/parallel/test-vm-context-property-forwarding.js
index b1012f5dee..5fcd64b8ba 100644
--- a/test/parallel/test-vm-context-property-forwarding.js
+++ b/test/parallel/test-vm-context-property-forwarding.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var vm = require('vm');
diff --git a/test/parallel/test-vm-context.js b/test/parallel/test-vm-context.js
index cdf76529ef..45e19e6638 100644
--- a/test/parallel/test-vm-context.js
+++ b/test/parallel/test-vm-context.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
@@ -22,7 +23,7 @@ assert.equal(3, context.foo);
 assert.equal('lala', context.thing);
 
 // Issue GH-227:
-assert.throws(function () {
+assert.throws(function() {
   vm.runInNewContext('', null, 'some.js');
 }, TypeError);
 
diff --git a/test/parallel/test-vm-create-and-run-in-context.js b/test/parallel/test-vm-create-and-run-in-context.js
index cf6a4875d5..01df6ad453 100644
--- a/test/parallel/test-vm-create-and-run-in-context.js
+++ b/test/parallel/test-vm-create-and-run-in-context.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-vm-create-context-accessors.js b/test/parallel/test-vm-create-context-accessors.js
index 23fc935389..678cf3fbd2 100644
--- a/test/parallel/test-vm-create-context-accessors.js
+++ b/test/parallel/test-vm-create-context-accessors.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var vm = require('vm');
diff --git a/test/parallel/test-vm-create-context-arg.js b/test/parallel/test-vm-create-context-arg.js
index 65dcf05e2b..d44eeec18d 100644
--- a/test/parallel/test-vm-create-context-arg.js
+++ b/test/parallel/test-vm-create-context-arg.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var vm = require('vm');
@@ -12,7 +13,7 @@ assert.doesNotThrow(function() {
 });
 
 assert.doesNotThrow(function() {
-    var sandbox = {};
-    vm.createContext(sandbox);
-    vm.createContext(sandbox);
+  var sandbox = {};
+  vm.createContext(sandbox);
+  vm.createContext(sandbox);
 });
diff --git a/test/parallel/test-vm-create-context-circular-reference.js b/test/parallel/test-vm-create-context-circular-reference.js
index ae23eba167..cb6a90dcae 100644
--- a/test/parallel/test-vm-create-context-circular-reference.js
+++ b/test/parallel/test-vm-create-context-circular-reference.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var vm = require('vm');
diff --git a/test/parallel/test-vm-cross-context.js b/test/parallel/test-vm-cross-context.js
index 56c6040be7..20a3792b28 100644
--- a/test/parallel/test-vm-cross-context.js
+++ b/test/parallel/test-vm-cross-context.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
@@ -5,5 +6,5 @@ var vm = require('vm');
 var ctx = vm.createContext(global);
 
 assert.doesNotThrow(function() {
-  vm.runInContext("!function() { var x = console.log; }()", ctx);
+  vm.runInContext('!function() { var x = console.log; }()', ctx);
 });
diff --git a/test/parallel/test-vm-debug-context.js b/test/parallel/test-vm-debug-context.js
index 0d6f4d0ac4..2f74f3ed8e 100644
--- a/test/parallel/test-vm-debug-context.js
+++ b/test/parallel/test-vm-debug-context.js
@@ -1,3 +1,5 @@
+/* eslint-disable no-debugger */
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var vm = require('vm');
diff --git a/test/parallel/test-vm-function-declaration.js b/test/parallel/test-vm-function-declaration.js
index c9a4fbb03e..5ff194e12d 100644
--- a/test/parallel/test-vm-function-declaration.js
+++ b/test/parallel/test-vm-function-declaration.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
@@ -13,7 +14,7 @@ code += 'function b(){}\n';
 
 // Grab the global b function as the completion value, to ensure that
 // we are getting the global function, and not some other thing
-code += '(function(){return this})().b;\n'
+code += '(function(){return this})().b;\n';
 
 var res = vm.runInContext(code, o, 'test');
 
diff --git a/test/parallel/test-vm-global-define-property.js b/test/parallel/test-vm-global-define-property.js
index ea30a4f315..f7f3e4f3df 100644
--- a/test/parallel/test-vm-global-define-property.js
+++ b/test/parallel/test-vm-global-define-property.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-vm-global-identity.js b/test/parallel/test-vm-global-identity.js
index bc3d9653a7..647edb22b4 100644
--- a/test/parallel/test-vm-global-identity.js
+++ b/test/parallel/test-vm-global-identity.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var vm = require('vm');
diff --git a/test/parallel/test-vm-harmony-proxies.js b/test/parallel/test-vm-harmony-proxies.js
index 859d77cd62..2f008615eb 100644
--- a/test/parallel/test-vm-harmony-proxies.js
+++ b/test/parallel/test-vm-harmony-proxies.js
@@ -1,3 +1,4 @@
+'use strict';
 // Flags: --harmony_proxies
 
 var common = require('../common');
diff --git a/test/parallel/test-vm-harmony-symbols.js b/test/parallel/test-vm-harmony-symbols.js
index 127e3c4a2b..86fde1b978 100644
--- a/test/parallel/test-vm-harmony-symbols.js
+++ b/test/parallel/test-vm-harmony-symbols.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var vm = require('vm');
diff --git a/test/parallel/test-vm-is-context.js b/test/parallel/test-vm-is-context.js
index 7b3d6616ee..5a46a452b9 100644
--- a/test/parallel/test-vm-is-context.js
+++ b/test/parallel/test-vm-is-context.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var vm = require('vm');
diff --git a/test/parallel/test-vm-new-script-new-context.js b/test/parallel/test-vm-new-script-new-context.js
index 742f247a11..4619c9345c 100644
--- a/test/parallel/test-vm-new-script-new-context.js
+++ b/test/parallel/test-vm-new-script-new-context.js
@@ -1,3 +1,4 @@
+/* eslint-disable strict */
 var common = require('../common');
 var assert = require('assert');
 var Script = require('vm').Script;
@@ -23,7 +24,7 @@ assert.throws(function() {
 console.error('undefined reference');
 var error;
 script = new Script('foo.bar = 5;');
-assert.throws(function () {
+assert.throws(function() {
   script.runInNewContext();
 }, /not defined/);
 
@@ -48,7 +49,7 @@ assert.equal(2, foo);
 
 console.error('call a function by reference');
 script = new Script('f()');
-function changeFoo() { foo = 100 }
+function changeFoo() { foo = 100; }
 script.runInNewContext({ f: changeFoo });
 assert.equal(foo, 100);
 
diff --git a/test/parallel/test-vm-new-script-this-context.js b/test/parallel/test-vm-new-script-this-context.js
index 99d40bea2e..16d8acd1ca 100644
--- a/test/parallel/test-vm-new-script-this-context.js
+++ b/test/parallel/test-vm-new-script-this-context.js
@@ -1,3 +1,4 @@
+/* eslint-disable strict */
 var common = require('../common');
 var assert = require('assert');
 var Script = require('vm').Script;
@@ -34,7 +35,7 @@ assert.equal(2, bar);
 assert.equal(1, foo);
 
 console.error('call a function');
-f = function() { foo = 100 };
+f = function() { foo = 100; };
 script = new Script('f()');
 script.runInThisContext(script);
 assert.equal(100, foo);
diff --git a/test/parallel/test-vm-run-in-new-context.js b/test/parallel/test-vm-run-in-new-context.js
index 4772c3b99d..da14a041fa 100644
--- a/test/parallel/test-vm-run-in-new-context.js
+++ b/test/parallel/test-vm-run-in-new-context.js
@@ -1,3 +1,4 @@
+/* eslint-disable strict */
 // Flags: --expose-gc
 
 var common = require('../common');
@@ -34,7 +35,7 @@ assert.equal(2, obj.bar);
 assert.equal(2, foo);
 
 console.error('call a function by reference');
-function changeFoo() { foo = 100 }
+function changeFoo() { foo = 100; }
 vm.runInNewContext('f()', { f: changeFoo });
 assert.equal(foo, 100);
 
@@ -44,7 +45,7 @@ vm.runInNewContext('f.a = 2', { f: f });
 assert.equal(f.a, 2);
 
 console.error('use function in context without referencing context');
-var fn = vm.runInNewContext('(function() { obj.p = {}; })', { obj: {} })
+var fn = vm.runInNewContext('(function() { obj.p = {}; })', { obj: {} });
 gc();
 fn();
 // Should not crash
diff --git a/test/parallel/test-vm-static-this.js b/test/parallel/test-vm-static-this.js
index b7b013396b..fb9cb764f8 100644
--- a/test/parallel/test-vm-static-this.js
+++ b/test/parallel/test-vm-static-this.js
@@ -1,3 +1,4 @@
+/* eslint-disable strict */
 var common = require('../common');
 var assert = require('assert');
 var vm = require('vm');
@@ -30,6 +31,6 @@ assert.equal(2, bar);
 assert.equal(1, foo);
 
 console.error('call a function');
-f = function() { foo = 100 };
+f = function() { foo = 100; };
 vm.runInThisContext('f()');
 assert.equal(100, foo);
diff --git a/test/parallel/test-vm-timeout.js b/test/parallel/test-vm-timeout.js
index 9925e03ad6..e9511e5923 100644
--- a/test/parallel/test-vm-timeout.js
+++ b/test/parallel/test-vm-timeout.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var vm = require('vm');
diff --git a/test/parallel/test-writedouble.js b/test/parallel/test-writedouble.js
index 24ceb885f5..2a9ab11107 100644
--- a/test/parallel/test-writedouble.js
+++ b/test/parallel/test-writedouble.js
@@ -1,3 +1,4 @@
+'use strict';
 /*
  * Tests to verify we're writing doubles correctly
  */
diff --git a/test/parallel/test-writefloat.js b/test/parallel/test-writefloat.js
index 5d5be20354..948bf49102 100644
--- a/test/parallel/test-writefloat.js
+++ b/test/parallel/test-writefloat.js
@@ -1,3 +1,4 @@
+'use strict';
 /*
  * Tests to verify we're writing floats correctly
  */
diff --git a/test/parallel/test-writeint.js b/test/parallel/test-writeint.js
index 064716ad0c..ee981a157a 100644
--- a/test/parallel/test-writeint.js
+++ b/test/parallel/test-writeint.js
@@ -1,3 +1,4 @@
+'use strict';
 /*
  * Tests to verify we're writing signed integers correctly
  */
diff --git a/test/parallel/test-writeuint.js b/test/parallel/test-writeuint.js
index ec2efa12fb..22579ceeca 100644
--- a/test/parallel/test-writeuint.js
+++ b/test/parallel/test-writeuint.js
@@ -1,3 +1,4 @@
+'use strict';
 /*
  * A battery of tests to help us read a series of uints
  */
diff --git a/test/parallel/test-zlib-close-after-write.js b/test/parallel/test-zlib-close-after-write.js
index cbb1ac1fe1..c02ff33fb5 100644
--- a/test/parallel/test-zlib-close-after-write.js
+++ b/test/parallel/test-zlib-close-after-write.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var zlib = require('zlib');
diff --git a/test/parallel/test-zlib-const.js b/test/parallel/test-zlib-const.js
index df9ca3d500..511eca613a 100644
--- a/test/parallel/test-zlib-const.js
+++ b/test/parallel/test-zlib-const.js
@@ -1,3 +1,4 @@
+/* eslint-disable strict */
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-zlib-convenience-methods.js b/test/parallel/test-zlib-convenience-methods.js
index a32d5d1d4c..5808bdf04a 100644
--- a/test/parallel/test-zlib-convenience-methods.js
+++ b/test/parallel/test-zlib-convenience-methods.js
@@ -1,3 +1,4 @@
+'use strict';
 // test convenience methods with and without options supplied
 
 var common = require('../common');
diff --git a/test/parallel/test-zlib-dictionary-fail.js b/test/parallel/test-zlib-dictionary-fail.js
index ea50bf4098..ced829f8d4 100644
--- a/test/parallel/test-zlib-dictionary-fail.js
+++ b/test/parallel/test-zlib-dictionary-fail.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var zlib = require('zlib');
diff --git a/test/parallel/test-zlib-dictionary.js b/test/parallel/test-zlib-dictionary.js
index 3a159e6090..109f4273f7 100644
--- a/test/parallel/test-zlib-dictionary.js
+++ b/test/parallel/test-zlib-dictionary.js
@@ -1,3 +1,4 @@
+'use strict';
 // test compression/decompression with dictionary
 
 var common = require('../common');
diff --git a/test/parallel/test-zlib-flush.js b/test/parallel/test-zlib-flush.js
index cfebda7bd2..6281b8eb21 100644
--- a/test/parallel/test-zlib-flush.js
+++ b/test/parallel/test-zlib-flush.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var zlib = require('zlib');
diff --git a/test/parallel/test-zlib-from-gzip.js b/test/parallel/test-zlib-from-gzip.js
index b218b4edfc..6076a6f09b 100644
--- a/test/parallel/test-zlib-from-gzip.js
+++ b/test/parallel/test-zlib-from-gzip.js
@@ -1,3 +1,4 @@
+'use strict';
 // test unzipping a file that was created with a non-node gzip lib,
 // piped in as fast as possible.
 
diff --git a/test/parallel/test-zlib-from-string.js b/test/parallel/test-zlib-from-string.js
index 4ce77a8b52..49f4d139c1 100644
--- a/test/parallel/test-zlib-from-string.js
+++ b/test/parallel/test-zlib-from-string.js
@@ -1,3 +1,4 @@
+'use strict';
 // test compressing and uncompressing a string with zlib
 
 var common = require('../common');
diff --git a/test/parallel/test-zlib-invalid-input.js b/test/parallel/test-zlib-invalid-input.js
index 948ea22448..e1e81bacc1 100644
--- a/test/parallel/test-zlib-invalid-input.js
+++ b/test/parallel/test-zlib-invalid-input.js
@@ -1,3 +1,4 @@
+'use strict';
 // test uncompressing invalid input
 
 var common = require('../common'),
@@ -24,15 +25,15 @@ var unzips = [ zlib.Unzip(),
                zlib.Inflate(),
                zlib.InflateRaw() ];
 var hadError = [];
-unzips.forEach(function (uz, i) {
-  console.error('Error for '+uz.constructor.name);
+unzips.forEach(function(uz, i) {
+  console.error('Error for ' + uz.constructor.name);
   uz.on('error', function(er) {
     console.error('Error event', er);
     hadError[i] = true;
   });
 
   uz.on('end', function(er) {
-    throw new Error('end event should not be emitted '+uz.constructor.name);
+    throw new Error('end event should not be emitted ' + uz.constructor.name);
   });
 
   // this will trigger error event
diff --git a/test/parallel/test-zlib-params.js b/test/parallel/test-zlib-params.js
index 6f19209561..f349c8dbd0 100644
--- a/test/parallel/test-zlib-params.js
+++ b/test/parallel/test-zlib-params.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var zlib = require('zlib');
diff --git a/test/parallel/test-zlib-random-byte-pipes.js b/test/parallel/test-zlib-random-byte-pipes.js
index 4044cbd211..fcdc81443c 100644
--- a/test/parallel/test-zlib-random-byte-pipes.js
+++ b/test/parallel/test-zlib-random-byte-pipes.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/parallel/test-zlib-write-after-close.js b/test/parallel/test-zlib-write-after-close.js
index 54b316631f..a1d9adb6d9 100644
--- a/test/parallel/test-zlib-write-after-close.js
+++ b/test/parallel/test-zlib-write-after-close.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var zlib = require('zlib');
diff --git a/test/parallel/test-zlib-write-after-flush.js b/test/parallel/test-zlib-write-after-flush.js
index c0dbee7774..4c53ca49eb 100644
--- a/test/parallel/test-zlib-write-after-flush.js
+++ b/test/parallel/test-zlib-write-after-flush.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var zlib = require('zlib');
diff --git a/test/parallel/test-zlib-zero-byte.js b/test/parallel/test-zlib-zero-byte.js
index e7c8ddc954..9aa260a7f3 100644
--- a/test/parallel/test-zlib-zero-byte.js
+++ b/test/parallel/test-zlib-zero-byte.js
@@ -1,8 +1,9 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
 var zlib = require('zlib');
-var gz = zlib.Gzip()
+var gz = zlib.Gzip();
 var emptyBuffer = new Buffer(0);
 var received = 0;
 gz.on('data', function(c) {
diff --git a/test/parallel/test-zlib.js b/test/parallel/test-zlib.js
index bb9ba53d5d..aaa965c424 100644
--- a/test/parallel/test-zlib.js
+++ b/test/parallel/test-zlib.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var zlib = require('zlib');
diff --git a/test/pummel/test-abort-fatal-error.js b/test/pummel/test-abort-fatal-error.js
index 045ff6da7f..9f012c9dfb 100644
--- a/test/pummel/test-abort-fatal-error.js
+++ b/test/pummel/test-abort-fatal-error.js
@@ -1,3 +1,4 @@
+'use strict';
 var assert = require('assert');
 var common = require('../common');
 
diff --git a/test/pummel/test-buffer-big.js b/test/pummel/test-buffer-big.js
index 9caa928766..b36b992214 100644
--- a/test/pummel/test-buffer-big.js
+++ b/test/pummel/test-buffer-big.js
@@ -1,8 +1,9 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
 // The tests below should throw an error, not abort the process...
-assert.throws(function() { new Buffer(0x3fffffff + 1) }, RangeError);
-assert.throws(function() { new Int8Array(0x3fffffff + 1) }, RangeError);
-assert.throws(function() { new ArrayBuffer(0x3fffffff + 1) }, RangeError);
-assert.throws(function() { new Float64Array(0x7ffffff + 1) }, RangeError);
+assert.throws(function() { new Buffer(0x3fffffff + 1); }, RangeError);
+assert.throws(function() { new Int8Array(0x3fffffff + 1); }, RangeError);
+assert.throws(function() { new ArrayBuffer(0x3fffffff + 1); }, RangeError);
+assert.throws(function() { new Float64Array(0x7ffffff + 1); }, RangeError);
diff --git a/test/pummel/test-child-process-spawn-loop.js b/test/pummel/test-child-process-spawn-loop.js
index a6129dd0bb..defed7d5f6 100644
--- a/test/pummel/test-child-process-spawn-loop.js
+++ b/test/pummel/test-child-process-spawn-loop.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/pummel/test-crypto-dh.js b/test/pummel/test-crypto-dh.js
index 0f3a5407dc..5588cdb708 100644
--- a/test/pummel/test-crypto-dh.js
+++ b/test/pummel/test-crypto-dh.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
@@ -19,21 +20,22 @@ assert.throws(function() {
 });
 
 var hashes = {
-  modp1 : "b4b330a6ffeacfbd861e7fe2135b4431",
-  modp2 : "7c3c5cad8b9f378d88f1dd64a4b6413a",
-  modp5 : "b1d2acc22c542e08669a5c5ae812694d",
-  modp14 : "8d041538cecc1a7d915ba4b718f8ad20",
-  modp15 : "dc3b93def24e078c4fbf92d5e14ba69b",
-  modp16 : "a273487f46f699461f613b3878d9dfd9",
-  modp17 : "dc76e09935310348c492de9bd82014d0",
-  modp18 : "db08973bfd2371758a69db180871c993"
-}
+  modp1 : 'b4b330a6ffeacfbd861e7fe2135b4431',
+  modp2 : '7c3c5cad8b9f378d88f1dd64a4b6413a',
+  modp5 : 'b1d2acc22c542e08669a5c5ae812694d',
+  modp14 : '8d041538cecc1a7d915ba4b718f8ad20',
+  modp15 : 'dc3b93def24e078c4fbf92d5e14ba69b',
+  modp16 : 'a273487f46f699461f613b3878d9dfd9',
+  modp17 : 'dc76e09935310348c492de9bd82014d0',
+  modp18 : 'db08973bfd2371758a69db180871c993'
+};
 
 for (var name in hashes) {
   var group = crypto.getDiffieHellman(name);
   var private_key = group.getPrime('hex');
   var hash1 = hashes[name];
-  var hash2 = crypto.createHash('md5').update(private_key.toUpperCase()).digest('hex');
+  var hash2 = crypto.createHash('md5')
+                    .update(private_key.toUpperCase()).digest('hex');
   assert.equal(hash1, hash2);
   assert.equal(group.getGenerator('hex'), '02');
 }
diff --git a/test/pummel/test-dh-regr.js b/test/pummel/test-dh-regr.js
index 5c40173b12..a6270bd241 100644
--- a/test/pummel/test-dh-regr.js
+++ b/test/pummel/test-dh-regr.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/pummel/test-dtrace-jsstack.js b/test/pummel/test-dtrace-jsstack.js
index e86a497f69..831402fc87 100644
--- a/test/pummel/test-dtrace-jsstack.js
+++ b/test/pummel/test-dtrace-jsstack.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var os = require('os');
@@ -14,18 +15,18 @@ if (os.type() != 'SunOS') {
 var frames = [ 'stalloogle', 'bagnoogle', 'doogle' ];
 var expected;
 
-var stalloogle = function (str) {
+var stalloogle = function(str) {
   expected = str;
   os.loadavg();
 };
 
-var bagnoogle = function (arg0, arg1) {
+var bagnoogle = function(arg0, arg1) {
   stalloogle(arg0 + ' is ' + arg1 + ' except that it is read-only');
 };
 
 var done = false;
 
-var doogle = function () {
+var doogle = function() {
   if (!done)
     setTimeout(doogle, 10);
 
@@ -46,15 +47,15 @@ var dtrace = spawn('dtrace', [ '-qwn', 'syscall::getloadavg:entry/pid == ' +
 
 var output = '';
 
-dtrace.stderr.on('data', function (data) {
+dtrace.stderr.on('data', function(data) {
   console.log('dtrace: ' + data);
 });
 
-dtrace.stdout.on('data', function (data) {
+dtrace.stdout.on('data', function(data) {
   output += data;
 });
 
-dtrace.on('exit', function (code) {
+dtrace.on('exit', function(code) {
   if (code != 0) {
     console.error('dtrace exited with code ' + code);
     process.exit(code);
diff --git a/test/pummel/test-exec.js b/test/pummel/test-exec.js
index bbedc3a572..41d81426e6 100644
--- a/test/pummel/test-exec.js
+++ b/test/pummel/test-exec.js
@@ -1,14 +1,15 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var exec = require('child_process').exec;
 
 if (process.platform !== 'win32') {
   // Unix.
-  var SLEEP3_COMMAND = "sleep 3";
+  var SLEEP3_COMMAND = 'sleep 3';
 } else {
   // Windows: `choice` is a command built into cmd.exe. Use another cmd process
   // to create a process tree, so we can catch bugs related to it.
-  var SLEEP3_COMMAND = "cmd /c choice /t 3 /c X /d X";
+  var SLEEP3_COMMAND = 'cmd /c choice /t 3 /c X /d X';
 }
 
 
diff --git a/test/pummel/test-fs-readfile-large.js b/test/pummel/test-fs-readfile-large.js
index d8c6634fb8..b6afbc254d 100644
--- a/test/pummel/test-fs-readfile-large.js
+++ b/test/pummel/test-fs-readfile-large.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
@@ -26,7 +27,7 @@ function makeFile(done) {
   }
 }
 
-makeFile(function () {
+makeFile(function() {
   fs.readFile(filename, function(err) {
     assert.ok(err, 'should get RangeError');
     assert.equal(err.name, 'RangeError', 'should get RangeError');
@@ -34,6 +35,6 @@ makeFile(function () {
   });
 });
 
-process.on('uncaughtException', function (err) {
+process.on('uncaughtException', function(err) {
   assert.ok(!err, 'should not throw uncaughtException');
 });
diff --git a/test/pummel/test-fs-watch-file-slow.js b/test/pummel/test-fs-watch-file-slow.js
index df8763a4e2..cd4b16bf31 100644
--- a/test/pummel/test-fs-watch-file-slow.js
+++ b/test/pummel/test-fs-watch-file-slow.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var path = require('path');
@@ -42,13 +43,13 @@ setTimeout(createFile, TIMEOUT);
 
 function createFile() {
   console.log('creating file');
-  fs.writeFileSync(FILENAME, "test");
+  fs.writeFileSync(FILENAME, 'test');
   setTimeout(touchFile, TIMEOUT);
 }
 
 function touchFile() {
   console.log('touch file');
-  fs.writeFileSync(FILENAME, "test");
+  fs.writeFileSync(FILENAME, 'test');
   setTimeout(removeFile, TIMEOUT);
 }
 
diff --git a/test/pummel/test-fs-watch-file.js b/test/pummel/test-fs-watch-file.js
index 199bf5242e..7b57803dd4 100644
--- a/test/pummel/test-fs-watch-file.js
+++ b/test/pummel/test-fs-watch-file.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var path = require('path');
@@ -123,7 +124,7 @@ assert.doesNotThrow(
       function a(curr, prev) {
         ++watchSeenFour;
         assert.equal(1, watchSeenFour);
-        fs.unwatchFile("." + path.sep + filenameFour, a);
+        fs.unwatchFile('.' + path.sep + filenameFour, a);
       }
       fs.watchFile(filenameFour, a);
     }
diff --git a/test/pummel/test-fs-watch-non-recursive.js b/test/pummel/test-fs-watch-non-recursive.js
index 60d2c6b6a8..6adb193928 100644
--- a/test/pummel/test-fs-watch-non-recursive.js
+++ b/test/pummel/test-fs-watch-non-recursive.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var path = require('path');
@@ -14,7 +15,7 @@ function cleanup() {
 process.on('exit', cleanup);
 cleanup();
 
-try { fs.mkdirSync(testsubdir, 0700); } catch (e) {}
+try { fs.mkdirSync(testsubdir, 0o700); } catch (e) {}
 
 // Need a grace period, else the mkdirSync() above fires off an event.
 setTimeout(function() {
diff --git a/test/pummel/test-http-client-reconnect-bug.js b/test/pummel/test-http-client-reconnect-bug.js
index 00a3860812..bd852e45f1 100644
--- a/test/pummel/test-http-client-reconnect-bug.js
+++ b/test/pummel/test-http-client-reconnect-bug.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/pummel/test-http-many-keep-alive-connections.js b/test/pummel/test-http-many-keep-alive-connections.js
index fdd7a06810..d90d4d9753 100644
--- a/test/pummel/test-http-many-keep-alive-connections.js
+++ b/test/pummel/test-http-many-keep-alive-connections.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
diff --git a/test/pummel/test-http-upload-timeout.js b/test/pummel/test-http-upload-timeout.js
index f889c60f17..08132e3c75 100644
--- a/test/pummel/test-http-upload-timeout.js
+++ b/test/pummel/test-http-upload-timeout.js
@@ -1,3 +1,4 @@
+'use strict';
 // This tests setTimeout() by having multiple clients connecting and sending
 // data in random intervals. Clients are also randomly disconnecting until there
 // are no more clients left. If no false timeout occurs, this test has passed.
diff --git a/test/pummel/test-https-ci-reneg-attack.js b/test/pummel/test-https-ci-reneg-attack.js
index 1ca965e99e..fa38bea001 100644
--- a/test/pummel/test-https-ci-reneg-attack.js
+++ b/test/pummel/test-https-ci-reneg-attack.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var spawn = require('child_process').spawn;
diff --git a/test/pummel/test-https-large-response.js b/test/pummel/test-https-large-response.js
index 5ad5da480c..1aa36464a1 100644
--- a/test/pummel/test-https-large-response.js
+++ b/test/pummel/test-https-large-response.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/pummel/test-https-no-reader.js b/test/pummel/test-https-no-reader.js
index 798a4f70b6..8f407e2d7d 100644
--- a/test/pummel/test-https-no-reader.js
+++ b/test/pummel/test-https-no-reader.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/pummel/test-keep-alive.js b/test/pummel/test-keep-alive.js
index 58af58a253..d03cb1d74f 100644
--- a/test/pummel/test-keep-alive.js
+++ b/test/pummel/test-keep-alive.js
@@ -1,3 +1,4 @@
+'use strict';
 if (process.platform === 'win32') {
   console.log('skipping this test because there is no wrk on windows');
   process.exit(0);
@@ -37,7 +38,8 @@ function runAb(opts, callback) {
     args.push('Connection: close');
   }
 
-  args.push(url.format({ hostname: '127.0.0.1', port: common.PORT, protocol: 'http'}));
+  args.push(url.format({ hostname: '127.0.0.1',
+                         port: common.PORT, protocol: 'http'}));
 
   //console.log(comm, args.join(' '));
 
diff --git a/test/pummel/test-net-connect-econnrefused.js b/test/pummel/test-net-connect-econnrefused.js
index be3db49aa4..113b04e31f 100644
--- a/test/pummel/test-net-connect-econnrefused.js
+++ b/test/pummel/test-net-connect-econnrefused.js
@@ -1,3 +1,4 @@
+'use strict';
 // verify that connect reqs are properly cleaned up
 
 var common = require('../common');
diff --git a/test/pummel/test-net-connect-memleak.js b/test/pummel/test-net-connect-memleak.js
index 66b7e926d8..855bf1f070 100644
--- a/test/pummel/test-net-connect-memleak.js
+++ b/test/pummel/test-net-connect-memleak.js
@@ -1,3 +1,4 @@
+'use strict';
 // Flags: --expose-gc
 
 var common = require('../common');
diff --git a/test/pummel/test-net-many-clients.js b/test/pummel/test-net-many-clients.js
index fce7f33e66..b70efbda58 100644
--- a/test/pummel/test-net-many-clients.js
+++ b/test/pummel/test-net-many-clients.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var net = require('net');
diff --git a/test/pummel/test-net-pause.js b/test/pummel/test-net-pause.js
index 26eec2cfd0..6386d29835 100644
--- a/test/pummel/test-net-pause.js
+++ b/test/pummel/test-net-pause.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var net = require('net');
diff --git a/test/pummel/test-net-pingpong-delay.js b/test/pummel/test-net-pingpong-delay.js
index 8a30e7bae7..e459c71a71 100644
--- a/test/pummel/test-net-pingpong-delay.js
+++ b/test/pummel/test-net-pingpong-delay.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var net = require('net');
diff --git a/test/pummel/test-net-pingpong.js b/test/pummel/test-net-pingpong.js
index d38064e64a..a7ede0b056 100644
--- a/test/pummel/test-net-pingpong.js
+++ b/test/pummel/test-net-pingpong.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var net = require('net');
diff --git a/test/pummel/test-net-throttle.js b/test/pummel/test-net-throttle.js
index 45c0a6fb6d..d556d8aaa8 100644
--- a/test/pummel/test-net-throttle.js
+++ b/test/pummel/test-net-throttle.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var net = require('net');
@@ -20,7 +21,8 @@ var server = net.createServer(function(connection) {
   connection.write(body.slice(part_N, 2 * part_N));
   assert.equal(false, connection.write(body.slice(2 * part_N, N)));
   console.log('bufferSize: ' + connection.bufferSize, 'expecting', N);
-  assert.ok(0 <= connection.bufferSize && connection._writableState.length <= N);
+  assert.ok(0 <= connection.bufferSize &&
+            connection._writableState.length <= N);
   connection.end();
 });
 
diff --git a/test/pummel/test-net-timeout.js b/test/pummel/test-net-timeout.js
index 47214fc98f..347e3a4344 100644
--- a/test/pummel/test-net-timeout.js
+++ b/test/pummel/test-net-timeout.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var net = require('net');
@@ -12,7 +13,7 @@ var echo_server = net.createServer(function(socket) {
 
   socket.on('timeout', function() {
     console.log('server timeout');
-    timeouttime = new Date;
+    timeouttime = new Date();
     console.dir(timeouttime);
     socket.destroy();
   });
@@ -53,7 +54,7 @@ echo_server.listen(common.PORT, function() {
 
       if (exchanges == 5) {
         console.log('wait for timeout - should come in ' + timeout + ' ms');
-        starttime = new Date;
+        starttime = new Date();
         console.dir(starttime);
       }
     }
diff --git a/test/pummel/test-net-timeout2.js b/test/pummel/test-net-timeout2.js
index 2eb97a6e7e..c7b445f96c 100644
--- a/test/pummel/test-net-timeout2.js
+++ b/test/pummel/test-net-timeout2.js
@@ -1,3 +1,4 @@
+'use strict';
 // socket.write was not resetting the timeout timer. See
 // https://github.com/joyent/node/issues/2002
 
diff --git a/test/pummel/test-net-write-callbacks.js b/test/pummel/test-net-write-callbacks.js
index b43729d0c1..21eae0f5ab 100644
--- a/test/pummel/test-net-write-callbacks.js
+++ b/test/pummel/test-net-write-callbacks.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var net = require('net');
 var assert = require('assert');
diff --git a/test/pummel/test-next-tick-infinite-calls.js b/test/pummel/test-next-tick-infinite-calls.js
index 5177135a34..d4fdb34964 100644
--- a/test/pummel/test-next-tick-infinite-calls.js
+++ b/test/pummel/test-next-tick-infinite-calls.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/pummel/test-process-hrtime.js b/test/pummel/test-process-hrtime.js
index faf97d8a8d..4fd66c0390 100644
--- a/test/pummel/test-process-hrtime.js
+++ b/test/pummel/test-process-hrtime.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/pummel/test-process-uptime.js b/test/pummel/test-process-uptime.js
index b105edebbd..a80806c209 100644
--- a/test/pummel/test-process-uptime.js
+++ b/test/pummel/test-process-uptime.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/pummel/test-regress-GH-814.js b/test/pummel/test-regress-GH-814.js
index 20183960e0..0059af1037 100644
--- a/test/pummel/test-regress-GH-814.js
+++ b/test/pummel/test-regress-GH-814.js
@@ -1,3 +1,4 @@
+'use strict';
 // Flags: --expose_gc
 
 function newBuffer(size, value) {
diff --git a/test/pummel/test-regress-GH-814_2.js b/test/pummel/test-regress-GH-814_2.js
index 7443e4f57e..6dd2f2d32e 100644
--- a/test/pummel/test-regress-GH-814_2.js
+++ b/test/pummel/test-regress-GH-814_2.js
@@ -1,3 +1,4 @@
+'use strict';
 // Flags: --expose_gc
 
 var common = require('../common');
diff --git a/test/pummel/test-regress-GH-892.js b/test/pummel/test-regress-GH-892.js
index af314349ff..d84170d764 100644
--- a/test/pummel/test-regress-GH-892.js
+++ b/test/pummel/test-regress-GH-892.js
@@ -1,3 +1,4 @@
+'use strict';
 // Uploading a big file via HTTPS causes node to drop out of the event loop.
 // https://github.com/joyent/node/issues/892
 // In this test we set up an HTTPS in this process and launch a subprocess
diff --git a/test/pummel/test-smalloc-alloc-segfault.js b/test/pummel/test-smalloc-alloc-segfault.js
index 3e89f726ce..d41ccaee09 100644
--- a/test/pummel/test-smalloc-alloc-segfault.js
+++ b/test/pummel/test-smalloc-alloc-segfault.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/pummel/test-smalloc-dispose-segfault.js b/test/pummel/test-smalloc-dispose-segfault.js
index e94d9d5ba1..9364cca344 100644
--- a/test/pummel/test-smalloc-dispose-segfault.js
+++ b/test/pummel/test-smalloc-dispose-segfault.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/pummel/test-smalloc-sliceonto-segfault.js b/test/pummel/test-smalloc-sliceonto-segfault.js
index ed43828a53..e9e00979ff 100644
--- a/test/pummel/test-smalloc-sliceonto-segfault.js
+++ b/test/pummel/test-smalloc-sliceonto-segfault.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/pummel/test-stream-pipe-multi.js b/test/pummel/test-stream-pipe-multi.js
index 00d17f1742..807e3c1415 100644
--- a/test/pummel/test-stream-pipe-multi.js
+++ b/test/pummel/test-stream-pipe-multi.js
@@ -1,3 +1,4 @@
+'use strict';
 // Test that having a bunch of streams piping in parallel
 // doesn't break anything.
 
diff --git a/test/pummel/test-stream2-basic.js b/test/pummel/test-stream2-basic.js
index 543acd61c1..c83d80c502 100644
--- a/test/pummel/test-stream2-basic.js
+++ b/test/pummel/test-stream2-basic.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var R = require('_stream_readable');
 var assert = require('assert');
@@ -88,7 +89,7 @@ function run() {
     same: assert.deepEqual,
     ok: assert,
     equal: assert.equal,
-    end: function () {
+    end: function() {
       count--;
       run();
     }
@@ -96,7 +97,7 @@ function run() {
 }
 
 // ensure all tests have run
-process.on("exit", function () {
+process.on('exit', function() {
   assert.equal(count, 0);
 });
 
@@ -153,9 +154,9 @@ test('pipe', function(t) {
                  'xxxxx',
                  'xxxxx',
                  'xxxxx',
-                 'xxxxx' ]
+                 'xxxxx' ];
 
-  var w = new TestWriter;
+  var w = new TestWriter();
   var flush = true;
 
   w.on('end', function(received) {
@@ -168,7 +169,7 @@ test('pipe', function(t) {
 
 
 
-[1,2,3,4,5,6,7,8,9].forEach(function(SPLIT) {
+[1, 2, 3, 4, 5, 6, 7, 8, 9].forEach(function(SPLIT) {
   test('unpipe', function(t) {
     var r = new TestReader(5);
 
@@ -226,7 +227,7 @@ test('pipe', function(t) {
 // both writers should get the same exact data.
 test('multipipe', function(t) {
   var r = new TestReader(5);
-  var w = [ new TestWriter, new TestWriter ];
+  var w = [ new TestWriter(), new TestWriter() ];
 
   var expect = [ 'xxxxx',
                  'xxxxx',
@@ -254,7 +255,7 @@ test('multipipe', function(t) {
 });
 
 
-[1,2,3,4,5,6,7,8,9].forEach(function(SPLIT) {
+[1, 2, 3, 4, 5, 6, 7, 8, 9].forEach(function(SPLIT) {
   test('multi-unpipe', function(t) {
     var r = new TestReader(5);
 
@@ -301,90 +302,90 @@ test('multipipe', function(t) {
   });
 });
 
-test('back pressure respected', function (t) {
+test('back pressure respected', function(t) {
   function noop() {}
 
   var r = new R({ objectMode: true });
   r._read = noop;
   var counter = 0;
-  r.push(["one"]);
-  r.push(["two"]);
-  r.push(["three"]);
-  r.push(["four"]);
+  r.push(['one']);
+  r.push(['two']);
+  r.push(['three']);
+  r.push(['four']);
   r.push(null);
 
   var w1 = new R();
-  w1.write = function (chunk) {
+  w1.write = function(chunk) {
     console.error('w1.emit("close")');
-    assert.equal(chunk[0], "one");
-    w1.emit("close");
-    process.nextTick(function () {
+    assert.equal(chunk[0], 'one');
+    w1.emit('close');
+    process.nextTick(function() {
       r.pipe(w2);
       r.pipe(w3);
-    })
+    });
   };
   w1.end = noop;
 
   r.pipe(w1);
 
-  var expected = ["two", "two", "three", "three", "four", "four"];
+  var expected = ['two', 'two', 'three', 'three', 'four', 'four'];
 
   var w2 = new R();
-  w2.write = function (chunk) {
+  w2.write = function(chunk) {
     console.error('w2 write', chunk, counter);
     assert.equal(chunk[0], expected.shift());
     assert.equal(counter, 0);
 
     counter++;
 
-    if (chunk[0] === "four") {
+    if (chunk[0] === 'four') {
       return true;
     }
 
-    setTimeout(function () {
+    setTimeout(function() {
       counter--;
-      console.error("w2 drain");
-      w2.emit("drain");
+      console.error('w2 drain');
+      w2.emit('drain');
     }, 10);
 
     return false;
-  }
+  };
   w2.end = noop;
 
   var w3 = new R();
-  w3.write = function (chunk) {
+  w3.write = function(chunk) {
     console.error('w3 write', chunk, counter);
     assert.equal(chunk[0], expected.shift());
     assert.equal(counter, 1);
 
     counter++;
 
-    if (chunk[0] === "four") {
+    if (chunk[0] === 'four') {
       return true;
     }
 
-    setTimeout(function () {
+    setTimeout(function() {
       counter--;
-      console.error("w3 drain");
-      w3.emit("drain");
+      console.error('w3 drain');
+      w3.emit('drain');
     }, 50);
 
     return false;
   };
-  w3.end = function () {
+  w3.end = function() {
     assert.equal(counter, 2);
     assert.equal(expected.length, 0);
     t.end();
   };
 });
 
-test('read(0) for ended streams', function (t) {
+test('read(0) for ended streams', function(t) {
   var r = new R();
   var written = false;
   var ended = false;
-  r._read = function (n) {};
+  r._read = function(n) {};
 
-  r.push(new Buffer("foo"));
+  r.push(new Buffer('foo'));
   r.push(null);
 
   var v = r.read(0);
@@ -393,38 +394,38 @@ test('read(0) for ended streams', function (t) {
 
   var w = new R();
 
-  w.write = function (buffer) {
+  w.write = function(buffer) {
     written = true;
     assert.equal(ended, false);
-    assert.equal(buffer.toString(), "foo")
+    assert.equal(buffer.toString(), 'foo');
   };
 
-  w.end = function () {
+  w.end = function() {
     ended = true;
     assert.equal(written, true);
     t.end();
   };
 
   r.pipe(w);
-})
+});
 
-test('sync _read ending', function (t) {
+test('sync _read ending', function(t) {
   var r = new R();
   var called = false;
-  r._read = function (n) {
+  r._read = function(n) {
     r.push(null);
   };
 
-  r.once('end', function () {
+  r.once('end', function() {
     called = true;
-  })
+  });
 
   r.read();
 
-  process.nextTick(function () {
+  process.nextTick(function() {
     assert.equal(called, true);
     t.end();
-  })
+  });
 });
 
 test('adding readable triggers data flow', function(t) {
diff --git a/test/pummel/test-timer-wrap.js b/test/pummel/test-timer-wrap.js
index fdfb855a75..62ba69d3fd 100644
--- a/test/pummel/test-timer-wrap.js
+++ b/test/pummel/test-timer-wrap.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/pummel/test-timer-wrap2.js b/test/pummel/test-timer-wrap2.js
index 8a7502888b..b289a85644 100644
--- a/test/pummel/test-timer-wrap2.js
+++ b/test/pummel/test-timer-wrap2.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/pummel/test-timers.js b/test/pummel/test-timers.js
index f676b98438..2225da91ed 100644
--- a/test/pummel/test-timers.js
+++ b/test/pummel/test-timers.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
@@ -11,9 +12,9 @@ clearTimeout(null);
 clearInterval(null);
 
 assert.equal(true, setTimeout instanceof Function);
-var starttime = new Date;
+var starttime = new Date();
 setTimeout(function() {
-  var endtime = new Date;
+  var endtime = new Date();
 
   var diff = endtime - starttime;
   assert.ok(diff > 0);
@@ -29,7 +30,7 @@ clearTimeout(id);
 
 setInterval(function() {
   interval_count += 1;
-  var endtime = new Date;
+  var endtime = new Date( );
 
   var diff = endtime - starttime;
   assert.ok(diff > 0);
diff --git a/test/pummel/test-tls-ci-reneg-attack.js b/test/pummel/test-tls-ci-reneg-attack.js
index 22c48699d0..49b9a87a7d 100644
--- a/test/pummel/test-tls-ci-reneg-attack.js
+++ b/test/pummel/test-tls-ci-reneg-attack.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var spawn = require('child_process').spawn;
diff --git a/test/pummel/test-tls-connect-memleak.js b/test/pummel/test-tls-connect-memleak.js
index 53275da60e..0345f9a6f6 100644
--- a/test/pummel/test-tls-connect-memleak.js
+++ b/test/pummel/test-tls-connect-memleak.js
@@ -1,3 +1,4 @@
+'use strict';
 // Flags: --expose-gc
 
 var common = require('../common');
diff --git a/test/pummel/test-tls-securepair-client.js b/test/pummel/test-tls-securepair-client.js
index cbff5feac8..7542ce62bc 100644
--- a/test/pummel/test-tls-securepair-client.js
+++ b/test/pummel/test-tls-securepair-client.js
@@ -1,3 +1,4 @@
+'use strict';
 //
 
 var common = require('../common');
diff --git a/test/pummel/test-tls-server-large-request.js b/test/pummel/test-tls-server-large-request.js
index c5eebb01a1..e6ef89c72e 100644
--- a/test/pummel/test-tls-server-large-request.js
+++ b/test/pummel/test-tls-server-large-request.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/pummel/test-tls-session-timeout.js b/test/pummel/test-tls-session-timeout.js
index 74a1abc990..962b1206b6 100644
--- a/test/pummel/test-tls-session-timeout.js
+++ b/test/pummel/test-tls-session-timeout.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 
 if (!common.opensslCli) {
@@ -46,7 +47,7 @@ function doTest() {
   // file containing a proper serialization of a session ticket.
   // To avoid a source control diff, we copy the ticket to a temporary file.
 
-  var sessionFileName = (function () {
+  var sessionFileName = (function() {
     var ticketFileName = 'tls-session-ticket.txt';
     var fixturesPath = join(common.fixturesDir, ticketFileName);
     var tmpPath = join(common.tmpDir, ticketFileName);
@@ -56,7 +57,7 @@ function doTest() {
 
   // Expects a callback -- cb(connectionType : enum ['New'|'Reused'])
 
-  var Client = function (cb) {
+  var Client = function(cb) {
     var flags = [
       's_client',
       '-connect', 'localhost:' + common.PORT,
@@ -73,7 +74,7 @@ function doTest() {
     });
     client.on('exit', function(code) {
       var connectionType;
-      var grepConnectionType = function (line) {
+      var grepConnectionType = function(line) {
         var matches = line.match(/(New|Reused), /);
         if (matches) {
           connectionType = matches[1];
@@ -101,7 +102,7 @@ function doTest() {
       assert(connectionType === 'New');
       Client(function(connectionType) {
         assert(connectionType === 'Reused');
-        setTimeout(function () {
+        setTimeout(function() {
           Client(function(connectionType) {
             assert(connectionType === 'New');
             server.close();
diff --git a/test/pummel/test-tls-throttle.js b/test/pummel/test-tls-throttle.js
index a8a83a2a3a..3eb1af6da7 100644
--- a/test/pummel/test-tls-throttle.js
+++ b/test/pummel/test-tls-throttle.js
@@ -1,3 +1,4 @@
+'use strict';
 // Server sends a large string. Client counts bytes and pauses every few
 // seconds. Makes sure that pause and resume work properly.
 
diff --git a/test/pummel/test-vm-memleak.js b/test/pummel/test-vm-memleak.js
index 916b65d6da..f93f34127f 100644
--- a/test/pummel/test-vm-memleak.js
+++ b/test/pummel/test-vm-memleak.js
@@ -1,3 +1,4 @@
+'use strict';
 // Flags: --max_old_space_size=32
 
 var assert = require('assert');
diff --git a/test/pummel/test-watch-file.js b/test/pummel/test-watch-file.js
index 3e92efc26c..1d0ef77d54 100644
--- a/test/pummel/test-watch-file.js
+++ b/test/pummel/test-watch-file.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/sequential/test-chdir.js b/test/sequential/test-chdir.js
index a24753de2d..0fab45cb0c 100644
--- a/test/sequential/test-chdir.js
+++ b/test/sequential/test-chdir.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var fs = require('fs');
@@ -20,4 +21,5 @@ fs.rmdirSync(dir);
 
 assert.throws(function() { process.chdir({}); }, TypeError, 'Bad argument.');
 assert.throws(function() { process.chdir(); }, TypeError, 'Bad argument.');
-assert.throws(function() { process.chdir("x", "y"); }, TypeError, 'Bad argument.');
+assert.throws(function() { process.chdir('x', 'y'); },
+              TypeError, 'Bad argument.');
diff --git a/test/sequential/test-child-process-emfile.js b/test/sequential/test-child-process-emfile.js
index 66be12749c..964b63a2b4 100644
--- a/test/sequential/test-child-process-emfile.js
+++ b/test/sequential/test-child-process-emfile.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var spawn = require('child_process').spawn;
diff --git a/test/sequential/test-child-process-execsync.js b/test/sequential/test-child-process-execsync.js
index 5cd9ee433d..13982e00a6 100644
--- a/test/sequential/test-child-process-execsync.js
+++ b/test/sequential/test-child-process-execsync.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var util = require('util');
@@ -58,7 +59,8 @@ assert.deepEqual(ret, msgBuf);
 
 ret = execFileSync(process.execPath, args, { encoding: 'utf8' });
 
-assert.strictEqual(ret, msg + '\n', 'execFileSync encoding result should match');
+assert.strictEqual(ret, msg + '\n',
+                   'execFileSync encoding result should match');
 
 // Verify that the cwd option works - GH #7824
 (function() {
diff --git a/test/sequential/test-child-process-fork-getconnections.js b/test/sequential/test-child-process-fork-getconnections.js
index 6848b2ffa0..a587713b61 100644
--- a/test/sequential/test-child-process-fork-getconnections.js
+++ b/test/sequential/test-child-process-fork-getconnections.js
@@ -1,3 +1,4 @@
+'use strict';
 var assert = require('assert');
 var common = require('../common');
 var fork = require('child_process').fork;
diff --git a/test/sequential/test-cluster-listening-port.js b/test/sequential/test-cluster-listening-port.js
index 5d68b066cf..eb8a974d04 100644
--- a/test/sequential/test-cluster-listening-port.js
+++ b/test/sequential/test-cluster-listening-port.js
@@ -1,3 +1,4 @@
+'use strict';
 var assert = require('assert');
 var cluster = require('cluster');
 var net = require('net');
diff --git a/test/sequential/test-debug-args.js b/test/sequential/test-debug-args.js
index 7aaef76a64..eb1533d441 100644
--- a/test/sequential/test-debug-args.js
+++ b/test/sequential/test-debug-args.js
@@ -1,3 +1,4 @@
+'use strict';
 // Flags: --debugger
 
 var common = require('../common');
diff --git a/test/sequential/test-deprecation-flags.js b/test/sequential/test-deprecation-flags.js
index 2af60a1736..e8565a3363 100644
--- a/test/sequential/test-deprecation-flags.js
+++ b/test/sequential/test-deprecation-flags.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var execFile = require('child_process').execFile;
@@ -12,7 +13,8 @@ execFile(node, normal, function(er, stdout, stderr) {
   console.error('normal: show deprecation warning');
   assert.equal(er, null);
   assert.equal(stdout, '');
-  assert.equal(stderr, 'util.p: Use console.error() instead\n\'This is deprecated\'\n');
+  assert.equal(stderr,
+               'util.p: Use console.error() instead\n\'This is deprecated\'\n');
   console.log('normal ok');
 });
 
diff --git a/test/sequential/test-force-repl.js b/test/sequential/test-force-repl.js
index c0ad1484ff..5907dc2019 100644
--- a/test/sequential/test-force-repl.js
+++ b/test/sequential/test-force-repl.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var spawn = require('child_process').spawn;
diff --git a/test/sequential/test-fs-watch-recursive.js b/test/sequential/test-fs-watch-recursive.js
index a789dcb306..f77b86e436 100644
--- a/test/sequential/test-fs-watch-recursive.js
+++ b/test/sequential/test-fs-watch-recursive.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var path = require('path');
@@ -23,7 +24,7 @@ if (process.platform === 'darwin') {
     try { fs.rmdirSync(testsubdir); } catch (e) { }
   };
 
-  try { fs.mkdirSync(testsubdir, 0700); } catch (e) {}
+  try { fs.mkdirSync(testsubdir, 0o700); } catch (e) {}
 
   assert.doesNotThrow(function() {
     var watcher = fs.watch(testDir, {recursive: true});
diff --git a/test/sequential/test-fs-watch.js b/test/sequential/test-fs-watch.js
index d92a10cd80..1cfaad9b3e 100644
--- a/test/sequential/test-fs-watch.js
+++ b/test/sequential/test-fs-watch.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var path = require('path');
@@ -41,7 +42,7 @@ fs.writeFileSync(filepathOne, 'hello');
 
 assert.doesNotThrow(
     function() {
-      var watcher = fs.watch(filepathOne)
+      var watcher = fs.watch(filepathOne);
       watcher.on('change', function(event, filename) {
         assert.equal('change', event);
 
@@ -82,7 +83,7 @@ setTimeout(function() {
 }, 20);
 
 try { fs.unlinkSync(filepathThree); } catch (e) {}
-try { fs.mkdirSync(testsubdir, 0700); } catch (e) {}
+try { fs.mkdirSync(testsubdir, 0o700); } catch (e) {}
 
 assert.doesNotThrow(
     function() {
@@ -123,7 +124,7 @@ assert.throws(function() {
 oldhandle.close(); // clean up
 
 assert.throws(function() {
-  var w = fs.watchFile(__filename, {persistent:false}, function(){});
+  var w = fs.watchFile(__filename, {persistent:false}, function() {});
   oldhandle = w._handle;
   w._handle = { stop: w._handle.stop };
   w.stop();
diff --git a/test/sequential/test-http-pipeline-flood.js b/test/sequential/test-http-pipeline-flood.js
index 6eeb785f9c..cb9fc97a86 100644
--- a/test/sequential/test-http-pipeline-flood.js
+++ b/test/sequential/test-http-pipeline-flood.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/sequential/test-init.js b/test/sequential/test-init.js
index abc6378a63..f68c001f64 100644
--- a/test/sequential/test-init.js
+++ b/test/sequential/test-init.js
@@ -1,3 +1,4 @@
+'use strict';
 (function() {
   var assert = require('assert'),
       child = require('child_process'),
diff --git a/test/sequential/test-memory-usage-emfile.js b/test/sequential/test-memory-usage-emfile.js
index e95fe429c3..e4f85488f4 100644
--- a/test/sequential/test-memory-usage-emfile.js
+++ b/test/sequential/test-memory-usage-emfile.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/sequential/test-mkdir-rmdir.js b/test/sequential/test-mkdir-rmdir.js
index 63dc78df38..7bd156419e 100644
--- a/test/sequential/test-mkdir-rmdir.js
+++ b/test/sequential/test-mkdir-rmdir.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var path = require('path');
@@ -9,12 +10,12 @@ var d = path.join(common.tmpDir, 'dir');
 var mkdir_error = false;
 var rmdir_error = false;
 
-fs.mkdir(d, 0666, function(err) {
+fs.mkdir(d, 0o666, function(err) {
   if (err) {
     console.log('mkdir error: ' + err.message);
     mkdir_error = true;
   } else {
-    fs.mkdir(d, 0666, function(err) {
+    fs.mkdir(d, 0o666, function(err) {
       console.log('expect EEXIST error: ', err);
       assert.ok(err.message.match(/^EEXIST/), 'got EEXIST message');
       assert.equal(err.code, 'EEXIST', 'got EEXIST code');
diff --git a/test/sequential/test-module-loading.js b/test/sequential/test-module-loading.js
index c1d8df4553..dfca2e4202 100644
--- a/test/sequential/test-module-loading.js
+++ b/test/sequential/test-module-loading.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var path = require('path');
@@ -53,7 +54,7 @@ assert.equal('D', d3.D());
 assert.equal(true, common.indirectInstanceOf(d4.D, Function));
 assert.equal('D', d4.D());
 
-assert.ok((new a.SomeClass) instanceof c.SomeClass);
+assert.ok((new a.SomeClass()) instanceof c.SomeClass);
 
 common.debug('test index.js modules ids and relative loading');
 var one = require('../fixtures/nested-index/one'),
@@ -89,7 +90,7 @@ common.debug('test name clashes');
 var my_path = require('../fixtures/path');
 assert.ok(common.indirectInstanceOf(my_path.path_func, Function));
 // this one does not exist and should throw
-assert.throws(function() { require('./utils')});
+assert.throws(function() { require('./utils'); });
 
 var errorThrown = false;
 try {
@@ -187,7 +188,7 @@ assert.deepEqual(json, {
 // the appropriate children, and so on.
 
 var children = module.children.reduce(function red(set, child) {
-  var id = path.relative(path.dirname(__dirname), child.id)
+  var id = path.relative(path.dirname(__dirname), child.id);
   id = id.replace(/\\/g, '/');
   set[id] = child.children.reduce(red, {});
   return set;
diff --git a/test/sequential/test-net-GH-5504.js b/test/sequential/test-net-GH-5504.js
index 2ee0a1d86d..0478de55d6 100644
--- a/test/sequential/test-net-GH-5504.js
+++ b/test/sequential/test-net-GH-5504.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/sequential/test-net-listen-exclusive-random-ports.js b/test/sequential/test-net-listen-exclusive-random-ports.js
index 2922a2b06e..c32273a59b 100644
--- a/test/sequential/test-net-listen-exclusive-random-ports.js
+++ b/test/sequential/test-net-listen-exclusive-random-ports.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var cluster = require('cluster');
diff --git a/test/sequential/test-net-localport.js b/test/sequential/test-net-localport.js
index 239196813a..09b6627c79 100644
--- a/test/sequential/test-net-localport.js
+++ b/test/sequential/test-net-localport.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var net = require('net');
@@ -17,4 +18,4 @@ var server = net.createServer(function(socket) {
   }).on('connect', function() {
     assert.strictEqual(client.localPort, common.PORT + 1);
   });
-})
+});
diff --git a/test/sequential/test-net-server-address.js b/test/sequential/test-net-server-address.js
index 717d46f1bb..1e91c348ef 100644
--- a/test/sequential/test-net-server-address.js
+++ b/test/sequential/test-net-server-address.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var net = require('net');
@@ -60,12 +61,12 @@ server1.listen(common.PORT, function() {
 // Test without hostname or port
 var server2 = net.createServer();
 
-server2.on('error', function (e) {
+server2.on('error', function(e) {
   console.log('Error on ip socket: ' + e.toString());
 });
 
 // Don't specify the port number
-server2.listen(function () {
+server2.listen(function() {
   var address = server2.address();
   assert.strictEqual(address.address, anycast_ipv6);
   assert.strictEqual(address.family, family_ipv6);
@@ -75,12 +76,12 @@ server2.listen(function () {
 // Test without hostname, but with a false-y port
 var server3 = net.createServer();
 
-server3.on('error', function (e) {
+server3.on('error', function(e) {
   console.log('Error on ip socket: ' + e.toString());
 });
 
 // Specify a false-y port number
-server3.listen(0, function () {
+server3.listen(0, function() {
   var address = server3.address();
   assert.strictEqual(address.address, anycast_ipv6);
   assert.strictEqual(address.family, family_ipv6);
@@ -90,12 +91,12 @@ server3.listen(0, function () {
 // Test without hostname, but with port -1
 var server4 = net.createServer();
 
-server4.on('error', function (e) {
+server4.on('error', function(e) {
   console.log('Error on ip socket: ' + e.toString());
 });
 
 // Specify -1 as port number
-server4.listen(-1, function () {
+server4.listen(-1, function() {
   var address = server4.address();
   assert.strictEqual(address.address, anycast_ipv6);
   assert.strictEqual(address.family, family_ipv6);
diff --git a/test/sequential/test-net-server-bind.js b/test/sequential/test-net-server-bind.js
index 3a7cd0e15b..c77341418c 100644
--- a/test/sequential/test-net-server-bind.js
+++ b/test/sequential/test-net-server-bind.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var net = require('net');
diff --git a/test/sequential/test-next-tick-error-spin.js b/test/sequential/test-next-tick-error-spin.js
index a150ea7a58..7a76ab1e12 100644
--- a/test/sequential/test-next-tick-error-spin.js
+++ b/test/sequential/test-next-tick-error-spin.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
@@ -22,24 +23,24 @@ if (process.argv[2] !== 'child') {
 
   // in the error handler, we trigger several MakeCallback events
   d.on('error', function(e) {
-    console.log('a')
-    console.log('b')
-    console.log('c')
-    console.log('d')
-    console.log('e')
+    console.log('a');
+    console.log('b');
+    console.log('c');
+    console.log('d');
+    console.log('e');
     f();
   });
 
   function f() {
     process.nextTick(function() {
       d.run(function() {
-        throw(new Error('x'));
+        throw new Error('x');
       });
     });
   }
 
   f();
-  setTimeout(function () {
+  setTimeout(function() {
     console.error('broke in!');
     //process.stdout.close();
     //process.stderr.close();
diff --git a/test/sequential/test-pipe-address.js b/test/sequential/test-pipe-address.js
index 6497eb7f12..b9e544e974 100644
--- a/test/sequential/test-pipe-address.js
+++ b/test/sequential/test-pipe-address.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var net = require('net');
diff --git a/test/sequential/test-pipe-head.js b/test/sequential/test-pipe-head.js
index 4fa3eaa4da..ac8b165151 100644
--- a/test/sequential/test-pipe-head.js
+++ b/test/sequential/test-pipe-head.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/sequential/test-pipe-stream.js b/test/sequential/test-pipe-stream.js
index 5e5837b298..ba4005e9e0 100644
--- a/test/sequential/test-pipe-stream.js
+++ b/test/sequential/test-pipe-stream.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var net = require('net');
diff --git a/test/sequential/test-pipe-unref.js b/test/sequential/test-pipe-unref.js
index 53853b9bdc..4580f2a66e 100644
--- a/test/sequential/test-pipe-unref.js
+++ b/test/sequential/test-pipe-unref.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/sequential/test-pipe.js b/test/sequential/test-pipe.js
index 11ea83b884..2ef19c37ea 100644
--- a/test/sequential/test-pipe.js
+++ b/test/sequential/test-pipe.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
diff --git a/test/sequential/test-pump-file2tcp-noexist.js b/test/sequential/test-pump-file2tcp-noexist.js
index 8b2057e533..1ffdb5d461 100644
--- a/test/sequential/test-pump-file2tcp-noexist.js
+++ b/test/sequential/test-pump-file2tcp-noexist.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var net = require('net');
diff --git a/test/sequential/test-pump-file2tcp.js b/test/sequential/test-pump-file2tcp.js
index 50b576771f..86effb7c6c 100644
--- a/test/sequential/test-pump-file2tcp.js
+++ b/test/sequential/test-pump-file2tcp.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var net = require('net');
diff --git a/test/sequential/test-readdir.js b/test/sequential/test-readdir.js
index bba28d0d7a..4987dc1848 100644
--- a/test/sequential/test-readdir.js
+++ b/test/sequential/test-readdir.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var path = require('path');
diff --git a/test/sequential/test-regress-GH-1531.js b/test/sequential/test-regress-GH-1531.js
index 9e1b8e3077..0d06cc3485 100644
--- a/test/sequential/test-regress-GH-1531.js
+++ b/test/sequential/test-regress-GH-1531.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/sequential/test-regress-GH-1697.js b/test/sequential/test-regress-GH-1697.js
index 18d1829174..ff5754f357 100644
--- a/test/sequential/test-regress-GH-1697.js
+++ b/test/sequential/test-regress-GH-1697.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var net = require('net'),
     cp = require('child_process'),
@@ -39,7 +40,7 @@ if (process.argv[2] === 'server') {
 
       // Block the event loop for 1 second
       var start = (new Date()).getTime();
-      while ((new Date).getTime() < start + 1000) {}
+      while ((new Date()).getTime() < start + 1000) {}
 
       client.write(alittle);
 
diff --git a/test/sequential/test-regress-GH-1726.js b/test/sequential/test-regress-GH-1726.js
index 74578ab4e0..859ab6cc5e 100644
--- a/test/sequential/test-regress-GH-1726.js
+++ b/test/sequential/test-regress-GH-1726.js
@@ -1,3 +1,4 @@
+'use strict';
 // Open a chain of five Node processes each a child of the next. The final
 // process exits immediately. Each process in the chain is instructed to
 // exit when its child exits.
@@ -26,7 +27,7 @@ assert.ok(!child.stderr);
 console.error('gen=%d, pid=%d', gen, process.pid);
 
 /*
-var timer = setTimeout(function () {
+var timer = setTimeout(function() {
   throw new Error('timeout! gen='+gen);
 }, 1000);
 */
diff --git a/test/sequential/test-regress-GH-1899.js b/test/sequential/test-regress-GH-1899.js
index 8663eb5a4d..98396aae13 100644
--- a/test/sequential/test-regress-GH-1899.js
+++ b/test/sequential/test-regress-GH-1899.js
@@ -1,3 +1,4 @@
+'use strict';
 var path = require('path');
 var assert = require('assert');
 var spawn = require('child_process').spawn;
diff --git a/test/sequential/test-regress-GH-3542.js b/test/sequential/test-regress-GH-3542.js
index 32b3433318..80f2a4c9c3 100644
--- a/test/sequential/test-regress-GH-3542.js
+++ b/test/sequential/test-regress-GH-3542.js
@@ -1,3 +1,4 @@
+'use strict';
 // This test is only relevant on Windows.
 if (process.platform !== 'win32') {
   return process.exit(0);
@@ -22,8 +23,8 @@ function test(p) {
 
 test('//localhost/c$/windows/system32');
 test('//localhost/c$/windows');
-test('//localhost/c$/')
-test('\\\\localhost\\c$')
+test('//localhost/c$/');
+test('\\\\localhost\\c$');
 test('c:\\');
 test('c:');
 test(process.env.windir);
diff --git a/test/sequential/test-regress-GH-3739.js b/test/sequential/test-regress-GH-3739.js
index d08cfce602..cc16b22dc4 100644
--- a/test/sequential/test-regress-GH-3739.js
+++ b/test/sequential/test-regress-GH-3739.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common'),
     assert = require('assert'),
     fs = require('fs'),
diff --git a/test/sequential/test-regress-GH-4015.js b/test/sequential/test-regress-GH-4015.js
index 38a77c8208..7f0e03f9ac 100644
--- a/test/sequential/test-regress-GH-4015.js
+++ b/test/sequential/test-regress-GH-4015.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var exec = require('child_process').exec;
diff --git a/test/sequential/test-regress-GH-4027.js b/test/sequential/test-regress-GH-4027.js
index de2dff180d..da91be95b8 100644
--- a/test/sequential/test-regress-GH-4027.js
+++ b/test/sequential/test-regress-GH-4027.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var path = require('path');
diff --git a/test/sequential/test-regress-GH-4948.js b/test/sequential/test-regress-GH-4948.js
index e78870b704..c87ade9850 100644
--- a/test/sequential/test-regress-GH-4948.js
+++ b/test/sequential/test-regress-GH-4948.js
@@ -1,10 +1,11 @@
+'use strict';
 // https://github.com/joyent/node/issues/4948
 
 var common = require('../common');
 var http = require('http');
 
 var reqCount = 0;
-var server = http.createServer(function(serverReq, serverRes){
+var server = http.createServer(function(serverReq, serverRes) {
   if (reqCount) {
     serverRes.end();
     server.close();
@@ -15,9 +16,10 @@ var server = http.createServer(function(serverReq, serverRes){
 
   // normally the use case would be to call an external site
   // does not require connecting locally or to itself to fail
-  var r = http.request({hostname: 'localhost', port: common.PORT}, function(res) {
+  var r = http.request({hostname: 'localhost',
+                        port: common.PORT}, function(res) {
     // required, just needs to be in the client response somewhere
-    serverRes.end(); 
+    serverRes.end();
 
     // required for test to fail
     res.on('data', function(data) { });
diff --git a/test/sequential/test-regress-GH-746.js b/test/sequential/test-regress-GH-746.js
index 93346c43f1..4b79f3c4e3 100644
--- a/test/sequential/test-regress-GH-746.js
+++ b/test/sequential/test-regress-GH-746.js
@@ -1,3 +1,4 @@
+'use strict';
 // Just test that destroying stdin doesn't mess up listening on a server.
 // This is a regression test for GH-746.
 
diff --git a/test/sequential/test-regress-GH-784.js b/test/sequential/test-regress-GH-784.js
index a33b6f23c4..08f660add3 100644
--- a/test/sequential/test-regress-GH-784.js
+++ b/test/sequential/test-regress-GH-784.js
@@ -1,3 +1,4 @@
+'use strict';
 // Regression test for GH-784
 // https://github.com/joyent/node/issues/784
 //
diff --git a/test/sequential/test-regress-GH-819.js b/test/sequential/test-regress-GH-819.js
index 16d0f3bc54..e459587d97 100644
--- a/test/sequential/test-regress-GH-819.js
+++ b/test/sequential/test-regress-GH-819.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var net = require('net');
 var assert = require('assert');
diff --git a/test/sequential/test-regress-GH-877.js b/test/sequential/test-regress-GH-877.js
index 80c8456742..69671b9dc4 100644
--- a/test/sequential/test-regress-GH-877.js
+++ b/test/sequential/test-regress-GH-877.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var http = require('http');
 var assert = require('assert');
diff --git a/test/sequential/test-require-cache-without-stat.js b/test/sequential/test-require-cache-without-stat.js
index 701d47bfc9..c602ab82b1 100644
--- a/test/sequential/test-require-cache-without-stat.js
+++ b/test/sequential/test-require-cache-without-stat.js
@@ -1,3 +1,4 @@
+'use strict';
 // We've experienced a regression where the module loader stats a bunch of
 // directories on require() even if it's been called before. The require()
 // should caching the request.
diff --git a/test/sequential/test-setproctitle.js b/test/sequential/test-setproctitle.js
index b7e6dd8b55..a0b15e2b85 100644
--- a/test/sequential/test-setproctitle.js
+++ b/test/sequential/test-setproctitle.js
@@ -1,3 +1,4 @@
+'use strict';
 // Original test written by Jakub Lekstan <kuebzky@gmail.com>
 
 // FIXME add sunos support
diff --git a/test/sequential/test-sigint-infinite-loop.js b/test/sequential/test-sigint-infinite-loop.js
index c444caf419..8211aeb69e 100644
--- a/test/sequential/test-sigint-infinite-loop.js
+++ b/test/sequential/test-sigint-infinite-loop.js
@@ -1,3 +1,4 @@
+'use strict';
 // This test is to assert that we can SIGINT a script which loops forever.
 // Ref(http):
 // groups.google.com/group/nodejs-dev/browse_thread/thread/e20f2f8df0296d3f
diff --git a/test/sequential/test-socket-write-after-fin-error.js b/test/sequential/test-socket-write-after-fin-error.js
index 5274d6e3da..226440ec50 100644
--- a/test/sequential/test-socket-write-after-fin-error.js
+++ b/test/sequential/test-socket-write-after-fin-error.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
@@ -24,7 +25,7 @@ var server = net.createServer(function(sock) {
     serverData += c;
   });
   sock.on('end', function() {
-    gotServerEnd = true
+    gotServerEnd = true;
     sock.write(serverData);
     sock.end();
   });
diff --git a/test/sequential/test-socket-write-after-fin.js b/test/sequential/test-socket-write-after-fin.js
index 44d98ba512..ea8ac27b59 100644
--- a/test/sequential/test-socket-write-after-fin.js
+++ b/test/sequential/test-socket-write-after-fin.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var net = require('net');
@@ -12,7 +13,7 @@ var server = net.createServer({ allowHalfOpen: true }, function(sock) {
     serverData += c;
   });
   sock.on('end', function() {
-    gotServerEnd = true
+    gotServerEnd = true;
     sock.end(serverData);
     server.close();
   });
diff --git a/test/sequential/test-stdin-child-proc.js b/test/sequential/test-stdin-child-proc.js
index 4d3ead73ce..93bf265b8b 100644
--- a/test/sequential/test-stdin-child-proc.js
+++ b/test/sequential/test-stdin-child-proc.js
@@ -1,3 +1,4 @@
+'use strict';
 // This tests that pausing and resuming stdin does not hang and timeout
 // when done in a child process.  See test/simple/test-stdin-pause-resume.js
 var common = require('../common');
diff --git a/test/sequential/test-stdin-from-file.js b/test/sequential/test-stdin-from-file.js
index bde2a8559c..35aa5b1a89 100644
--- a/test/sequential/test-stdin-from-file.js
+++ b/test/sequential/test-stdin-from-file.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var join = require('path').join;
diff --git a/test/sequential/test-stdin-pipe-resume.js b/test/sequential/test-stdin-pipe-resume.js
index a326e380a7..dbac78d78c 100644
--- a/test/sequential/test-stdin-pipe-resume.js
+++ b/test/sequential/test-stdin-pipe-resume.js
@@ -1,3 +1,4 @@
+'use strict';
 // This tests that piping stdin will cause it to resume() as well.
 var common = require('../common');
 var assert = require('assert');
diff --git a/test/sequential/test-stdin-script-child.js b/test/sequential/test-stdin-script-child.js
index dcccff1ff5..8590df02d8 100644
--- a/test/sequential/test-stdin-script-child.js
+++ b/test/sequential/test-stdin-script-child.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/sequential/test-stdout-cannot-be-closed-child-process-pipe.js b/test/sequential/test-stdout-cannot-be-closed-child-process-pipe.js
index 519dce059b..c6f5aecd40 100644
--- a/test/sequential/test-stdout-cannot-be-closed-child-process-pipe.js
+++ b/test/sequential/test-stdout-cannot-be-closed-child-process-pipe.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/sequential/test-stdout-close-catch.js b/test/sequential/test-stdout-close-catch.js
index c1165350ae..f0ecf9a7c4 100644
--- a/test/sequential/test-stdout-close-catch.js
+++ b/test/sequential/test-stdout-close-catch.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var path = require('path');
diff --git a/test/sequential/test-stdout-stderr-reading.js b/test/sequential/test-stdout-stderr-reading.js
index 3fe0db0ce3..82fd51cedd 100644
--- a/test/sequential/test-stdout-stderr-reading.js
+++ b/test/sequential/test-stdout-stderr-reading.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/sequential/test-stdout-to-file.js b/test/sequential/test-stdout-to-file.js
index 8a9d047691..4ef473e57a 100644
--- a/test/sequential/test-stdout-to-file.js
+++ b/test/sequential/test-stdout-to-file.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var path = require('path');
diff --git a/test/sequential/test-stream2-fs.js b/test/sequential/test-stream2-fs.js
index 552d686af0..96ab97174b 100644
--- a/test/sequential/test-stream2-fs.js
+++ b/test/sequential/test-stream2-fs.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var R = require('_stream_readable');
 var assert = require('assert');
@@ -32,7 +33,7 @@ TestWriter.prototype.write = function(c) {
 TestWriter.prototype.end = function(c) {
   if (c) this.buffer.push(c.toString());
   this.emit('results', this.buffer);
-}
+};
 
 var r = new FSReadable(file);
 var w = new TestWriter();
@@ -41,7 +42,7 @@ w.on('results', function(res) {
   console.error(res, w.length);
   assert.equal(w.length, size);
   var l = 0;
-  assert.deepEqual(res.map(function (c) {
+  assert.deepEqual(res.map(function(c) {
     return c.length;
   }), expectLengths);
   console.log('ok');
diff --git a/test/sequential/test-stream2-httpclient-response-end.js b/test/sequential/test-stream2-httpclient-response-end.js
index 627960888a..15d7fba27f 100644
--- a/test/sequential/test-stream2-httpclient-response-end.js
+++ b/test/sequential/test-stream2-httpclient-response-end.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var http = require('http');
diff --git a/test/sequential/test-stream2-stderr-sync.js b/test/sequential/test-stream2-stderr-sync.js
index 9b634116db..ccbdc55e4f 100644
--- a/test/sequential/test-stream2-stderr-sync.js
+++ b/test/sequential/test-stream2-stderr-sync.js
@@ -1,3 +1,4 @@
+'use strict';
 // Make sure that sync writes to stderr get processed before exiting.
 
 var common = require('../common');
diff --git a/test/sequential/test-sync-fileread.js b/test/sequential/test-sync-fileread.js
index 3f5f6debd5..24a80d96c2 100644
--- a/test/sequential/test-sync-fileread.js
+++ b/test/sequential/test-sync-fileread.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var path = require('path');
diff --git a/test/sequential/test-tcp-wrap-connect.js b/test/sequential/test-tcp-wrap-connect.js
index 2dc9f0cb93..9373906c6f 100644
--- a/test/sequential/test-tcp-wrap-connect.js
+++ b/test/sequential/test-tcp-wrap-connect.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var TCP = process.binding('tcp_wrap').TCP;
diff --git a/test/sequential/test-tcp-wrap-listen.js b/test/sequential/test-tcp-wrap-listen.js
index 2c0856bd95..a2c07a7a9c 100644
--- a/test/sequential/test-tcp-wrap-listen.js
+++ b/test/sequential/test-tcp-wrap-listen.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/sequential/test-tls-honorcipherorder.js b/test/sequential/test-tls-honorcipherorder.js
index cad1a83a30..c33cd9eea6 100644
--- a/test/sequential/test-tls-honorcipherorder.js
+++ b/test/sequential/test-tls-honorcipherorder.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/sequential/test-util-debug.js b/test/sequential/test-util-debug.js
index 1af9a7705a..834c21ec0e 100644
--- a/test/sequential/test-util-debug.js
+++ b/test/sequential/test-util-debug.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 
diff --git a/test/sequential/test-vm-syntax-error-stderr.js b/test/sequential/test-vm-syntax-error-stderr.js
index b3f76e5e30..f7b1bef9e3 100644
--- a/test/sequential/test-vm-syntax-error-stderr.js
+++ b/test/sequential/test-vm-syntax-error-stderr.js
@@ -1,3 +1,4 @@
+'use strict';
 var common = require('../common');
 var assert = require('assert');
 var path = require('path');
diff --git a/test/sequential/test-vm-timeout-rethrow.js b/test/sequential/test-vm-timeout-rethrow.js
index 547ed2f8d6..4f3af900ee 100644
--- a/test/sequential/test-vm-timeout-rethrow.js
+++ b/test/sequential/test-vm-timeout-rethrow.js
@@ -1,10 +1,11 @@
+'use strict';
 var assert = require('assert');
 var vm = require('vm');
 var spawn = require('child_process').spawn;
 
 if (process.argv[2] === 'child') {
   var code = 'var j = 0;\n' +
-      'for (var i = 0; i < 1000000; i++) j += add(i, i + 1);\n'
+      'for (var i = 0; i < 1000000; i++) j += add(i, i + 1);\n' +
       'j;';
 
   var ctx = vm.createContext({
diff --git a/test/sequential/test-zerolengthbufferbug.js b/test/sequential/test-zerolengthbufferbug.js
index dde08c6391..de36444180 100644
--- a/test/sequential/test-zerolengthbufferbug.js
+++ b/test/sequential/test-zerolengthbufferbug.js
@@ -1,3 +1,4 @@
+'use strict';
 // Serving up a zero-length buffer should work.
 
 var common = require('../common');
diff --git a/test/timers/test-timers-reliability.js b/test/timers/test-timers-reliability.js
index c240a44685..b4332468bc 100644
--- a/test/timers/test-timers-reliability.js
+++ b/test/timers/test-timers-reliability.js
@@ -1,3 +1,4 @@
+'use strict';
 // FaketimeFlags: --exclude-monotonic -f '2014-07-21 09:00:00'
 
 var common = require('../common');
@@ -31,23 +32,23 @@ var intervalFired = false;
  */
 
 var monoTimer = new Timer();
-monoTimer.ontimeout = function () {
+monoTimer.ontimeout = function() {
     /*
      * Make sure that setTimeout's and setInterval's callbacks have
      * already fired, otherwise it means that they are vulnerable to
      * time drifting or inconsistent time changes.
      */
-    assert(timerFired);
-    assert(intervalFired);
+  assert(timerFired);
+  assert(intervalFired);
 };
 
 monoTimer.start(300, 0);
 
-var timer = setTimeout(function () {
-    timerFired = true;
+var timer = setTimeout(function() {
+  timerFired = true;
 }, 200);
 
-var interval = setInterval(function () {
-    intervalFired = true;
-    clearInterval(interval);
+var interval = setInterval(function() {
+  intervalFired = true;
+  clearInterval(interval);
 }, 200);