#1097. Named timeout for tracking purposes

4 files changed, 43 insertions, 10 deletions

diff --git a/README.md b/README.md
index 79ced0a..10b4cd7 100644
--- a/README.md
+++ b/README.md
@@ -2089,13 +2089,15 @@ __Arguments__
 
 * `function` - The asynchronous function you want to set the time limit.
 * `miliseconds` - The specified time limit.
+* `info` - *Optional* Any variable you want attached (`string`, `object`, etc) to
+  timeout Error for more information.
 
 __Example__
 
 ```js
-async.timeout(function(callback) {
+async.timeout(function nameOfCallback(callback) {
   doAsyncTask(callback);
-}, 1000);
+}, 1000, 'more info about timeout');
 ```
 
 ---------------------------------------
diff --git a/lib/timeout.js b/lib/timeout.js
index 6af4f52..ebf0446 100644
--- a/lib/timeout.js
+++ b/lib/timeout.js
@@ -2,7 +2,7 @@
 
 import initialParams from './internal/initialParams';
 
-export default function timeout(asyncFn, miliseconds) {
+export default function timeout(asyncFn, miliseconds, info) {
     var originalCallback, timer;
     var timedOut = false;
 
@@ -14,8 +14,12 @@ export default function timeout(asyncFn, miliseconds) {
     }
 
     function timeoutCallback() {
-        var error  = new Error('Callback function timed out.');
+        var name = asyncFn.name || 'anonymous';
+        var error  = new Error('Callback function "' + name + '" timed out.');
         error.code = 'ETIMEDOUT';
+        if (info) {
+            error.info = info;
+        }
         timedOut = true;
         originalCallback(error);
     }
diff --git a/mocha_test/timeout.js b/mocha_test/timeout.js
index c8b79a7..7608124 100644
--- a/mocha_test/timeout.js
+++ b/mocha_test/timeout.js
@@ -17,7 +17,7 @@ describe('timeout', function () {
             }, 50)
         ],
         function(err, results) {
-            expect(err.message).to.equal('Callback function timed out.');
+            expect(err.message).to.equal('Callback function "asyncFn" timed out.');
             expect(err.code).to.equal('ETIMEDOUT');
             expect(results[0]).to.equal('I didn\'t time out');
             done();
@@ -38,7 +38,7 @@ describe('timeout', function () {
             }, 50)
         ],
         function(err, results) {
-            expect(err.message).to.equal('Callback function timed out.');
+            expect(err.message).to.equal('Callback function "asyncFn" timed out.');
             expect(err.code).to.equal('ETIMEDOUT');
             expect(results[0]).to.equal('I didn\'t time out');
             done();
diff --git a/test/test-async.js b/test/test-async.js
index 6831ac2..d36c704 100755
--- a/test/test-async.js
+++ b/test/test-async.js
@@ -2770,7 +2770,7 @@ exports['asyncify'] = {
 };
 
 exports['timeout'] = function (test) {
-    test.expect(3);
+    test.expect(4);
 
     async.series([
         async.timeout(function asyncFn(callback) {
@@ -2785,15 +2785,41 @@ exports['timeout'] = function (test) {
         }, 150)
     ],
     function(err, results) {
-        test.ok(err.message === 'Callback function timed out.');
+        test.ok(err.message === 'Callback function "asyncFn" timed out.');
         test.ok(err.code === 'ETIMEDOUT');
+        test.ok(err.info === undefined);
         test.ok(results[0] === 'I didn\'t time out');
         test.done();
     });
 };
 
+exports['timeout with info'] = function (test) {
+    test.expect(4);
+
+    var info = { custom: 'info about callback' };
+    async.series([
+            async.timeout(function asyncFn(callback) {
+                setTimeout(function() {
+                    callback(null, 'I didn\'t time out');
+                }, 50);
+            }, 200),
+            async.timeout(function asyncFn(callback) {
+                setTimeout(function() {
+                    callback(null, 'I will time out');
+                }, 300);
+            }, 150, info)
+        ],
+        function(err, results) {
+            test.ok(err.message === 'Callback function "asyncFn" timed out.');
+            test.ok(err.code === 'ETIMEDOUT');
+            test.ok(err.info === info);
+            test.ok(results[0] === 'I didn\'t time out');
+            test.done();
+        });
+};
+
 exports['timeout with parallel'] = function (test) {
-    test.expect(3);
+    test.expect(4);
 
     async.parallel([
         async.timeout(function asyncFn(callback) {
@@ -2808,8 +2834,9 @@ exports['timeout with parallel'] = function (test) {
         }, 150)
     ],
     function(err, results) {
-        test.ok(err.message === 'Callback function timed out.');
+        test.ok(err.message === 'Callback function "asyncFn" timed out.');
         test.ok(err.code === 'ETIMEDOUT');
+        test.ok(err.info === undefined);
         test.ok(results[0] === 'I didn\'t time out');
         test.done();
     });