| <!DOCTYPE html> |
| <title>'addtrack' event is fired when a TextTrack is created</title> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script> |
| async_test(function(t) { |
| var video = document.createElement('video'); |
| |
| var trackElement = document.createElement('track'); |
| video.appendChild(trackElement); |
| var tracks = []; |
| tracks.push(trackElement.track); |
| |
| // Register the 'addtrack' listener after creating the element |
| // to make sure the event is dispatched asynchronously. |
| video.textTracks.onaddtrack = t.step_func(function(event) { |
| assert_equals(event.target, video.textTracks); |
| assert_true(event instanceof TrackEvent, 'instanceof'); |
| assert_equals(event.track, tracks[video.textTracks.length - 1]); |
| |
| if (video.textTracks.length == 1) { |
| tracks.push(video.addTextTrack('captions', 'Caption Track', 'en')); |
| assert_equals(video.textTracks.length, 2); |
| } else { |
| t.done(); |
| } |
| }); |
| |
| trackElement.src = 'resources/webvtt-file.vtt'; |
| trackElement.track.mode = 'hidden'; |
| assert_equals(video.textTracks.length, 1); |
| assert_equals(trackElement.readyState, HTMLTrackElement.NONE); |
| }); |
| </script> |
