Bug 1238472 - Start playing webm after the iframe loaded. r=baku

dom/browser-element/mochitest/browserElement_NoAudioTrack.js

@@ -8,6 +8,18 @@ var fileURL = 'http://example.org/tests/dom/browser-element/mochitest/file_brows
 var generator = runTests();
 var testFrame;
 
+function alertListener(e) {
+  var message = e.detail.message;
+  if (/^OK/.exec(message)) {
+    ok(true, "Message from file : " + message);
+    continueTest();
+  } else if (/^KO/.exec(message)) {
+    error(message);
+  } else {
+    error("Undefined event.");
+  }
+}
+
 function error(aMessage) {
   ok(false, "Error : " + aMessage);
   finish();
@@ -22,30 +34,24 @@ function continueTest() {
 }
 
 function finish() {
+  testFrame.removeEventListener('mozbrowsershowmodalprompt', alertListener);
+  ok(true, "Remove event-listener.");
   document.body.removeChild(testFrame);
+  ok(true, "Remove test-frame from document.");
   SimpleTest.finish();
 }
 
 function setCommand(aArg) {
   info("# Command = " + aArg);
   testFrame.src = fileURL + '#' + aArg;
-
-  // Yield to the event loop a few times to make sure that onactivestatechanged
-  // is not dispatched.
-  SimpleTest.executeSoon(function() {
-    SimpleTest.executeSoon(function() {
-      SimpleTest.executeSoon(function() {
-        continueTest();
-      });
-    });
-  });
 }
 
 function runTests() {
   setCommand('play');
   yield undefined;
 
-  setCommand('pause');
+  // wait a second to make sure that onactivestatechanged isn't dispatched.
+  setCommand('idle');
   yield undefined;
 
   finish();
@@ -77,7 +83,11 @@ function setupTestFrame() {
   }
 
   testFrame.addEventListener('mozbrowserloadend', loadend);
+  testFrame.addEventListener('mozbrowsershowmodalprompt', alertListener);
+  ok(true, "Add event-listeners.");
+
   document.body.appendChild(testFrame);
+  ok(true, "Append test-frame to document.");
 }
 
 addEventListener('testready', function() {

dom/browser-element/mochitest/file_browserElement_NoAudioTrack.html

@@ -4,8 +4,29 @@
 <script type="application/javascript;version=1.7">
 var audio = new Audio();
 audio.src = "noaudio.webm";
+audio.preload = "none";
 audio.loop = true;
-audio.play();
+
+function ok(aVal, aMsg) {
+  alert((!!aVal ? "OK" : "KO") + ", " + aMsg);
+}
+
+function runCommands()
+{
+  switch(location.hash) {
+    case '#play':
+      audio.play();
+      ok(true, "Start playing a video without audio track!");
+      break;
+    case '#idle':
+      ok(!audio.paused, "Video is still playing!");
+      break;
+    default :
+      ok(false, "Undefined command!");
+  }
+}
+
+window.addEventListener('hashchange', runCommands);
 </script>
 </body>
 </html>

dom/browser-element/mochitest/mochitest.ini

@@ -212,6 +212,7 @@ skip-if = (toolkit == 'android' && processor == 'x86') #x86 only
 [test_browserElement_inproc_Metachange.html]
 [test_browserElement_inproc_NextPaint.html]
 [test_browserElement_inproc_NoAudioTrack.html]
+tags = audiochannel
 [test_browserElement_inproc_OpenNamed.html]
 skip-if = (toolkit == 'gonk' && !debug)
 [test_browserElement_inproc_OpenTab.html]