Implement suspend() and resume() for OfflineAudioContext

LayoutTests/webaudio/resources/audio-testing.js

Index: LayoutTests/webaudio/resources/audio-testing.js
diff --git a/LayoutTests/webaudio/resources/audio-testing.js b/LayoutTests/webaudio/resources/audio-testing.js
index c4a791ce57a2cfcb567a4a8bc112c9ba4f1e8c91..bd7f5b8f572d1bea128c44b3c18e131686fdb6a3 100644
--- a/LayoutTests/webaudio/resources/audio-testing.js
+++ b/LayoutTests/webaudio/resources/audio-testing.js
@@ -631,6 +631,34 @@ var Should = (function () {
         this._testPassed('has no glitch above the threshold of ' + threshold);
     };
 
+    // Check if the target promise is resolved correctly.
+    //
+    // Example:
+    // Should('My promise', promise).beResolved().then(nextStuff);
+    // Result:
+    // "PASS My promise resolved correctly."

[Raymond Toy, 2015/06/12 21:11:36]

We should do this everywhere, but I think we should include a FAIL example in
the comments too.

[hongchan, 2015/06/15 18:40:46]

Done.

+    ShouldModel.prototype.beResolved = function () {
+        return this.target.then(function () {
+            this._testPassed('resolved correctly');
+        }.bind(this), function (err) {
+            this._testFailed('rejected incorrectly (with ' + err + ')');
+        }.bind(this));
+    };
+
+    // Check if the target promise is rejected correctly.
+    //
+    // Example:
+    // Should('My promise', promise).beRejected().then(nextStuff);
+    // Result:
+    // "PASS My promise rejected correctly."
+    ShouldModel.prototype.beRejected = function () {
+        return this.target.then(function () {
+            this._testFailed('resolved incorrectly');
+        }.bind(this), function (err) {
+            this._testPassed('rejected correctly (with ' + err + ')');
+        }.bind(this));
+    };
+
     // Should() method.
     //
     // |desc| is the description of the task or check and |target| is a value
@@ -652,5 +680,4 @@ var Should = (function () {
 
         return new ShouldModel(desc, target, _opts);
     };
-
-})();
+})();