test: refactor all tests that depends on crypto

we had a few ways versions of looking for support before executing a test. this
commit unifies them as well as add the check for all tests that previously
lacked them. found by running `./configure --without-ssl && make test`. also,
produce tap skip output if the test is skipped.

PR-URL: https://github.com/iojs/io.js/pull/1049
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Shigeki Ohtsu <ohtsu@iij.ad.jp>

1 files changed, 14 insertions, 10 deletions

diff --git a/test/parallel/test-buffer.js b/test/parallel/test-buffer.js
index 1c2c425090..f4e89e2a57 100644
--- a/test/parallel/test-buffer.js
+++ b/test/parallel/test-buffer.js
@@ -1108,16 +1108,20 @@ assert.throws(function () {
   new SlowBuffer(smalloc.kMaxLength + 1);
 }, RangeError);
 
-// Test truncation after decode
-var crypto = require('crypto');
-
-var b1 = new Buffer('YW55=======', 'base64');
-var b2 = new Buffer('YW55', 'base64');
-
-assert.equal(
-  crypto.createHash('sha1').update(b1).digest('hex'),
-  crypto.createHash('sha1').update(b2).digest('hex')
-);
+if (common.hasCrypto) {
+  // Test truncation after decode
+  var crypto = require('crypto');
+
+  var b1 = new Buffer('YW55=======', 'base64');
+  var b2 = new Buffer('YW55', 'base64');
+
+  assert.equal(
+    crypto.createHash('sha1').update(b1).digest('hex'),
+    crypto.createHash('sha1').update(b2).digest('hex')
+  );
+} else {
+  console.log('1..0 # Skipped: missing crypto');
+}
 
 // Test Compare
 var b = new Buffer(1).fill('a');