| <!DOCTYPE html> |
| <title>TextTrack's cues are indexed and updated in order during video playback</title> |
| <meta name="timeout" content="long"> |
| <script src="/common/media.js"></script> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <video> |
| <track src="resources/cues-chrono-order.vtt" kind="captions" default> |
| <script> |
| // Use the cuechange event on TextTrack. |
| async_test(function(t) { |
| var video = document.querySelector("video"); |
| var testTrack = document.querySelector("track"); |
| |
| video.src = getVideoURI("/media/test"); |
| video.oncanplaythrough = t.step_func(attemptTests); |
| |
| function attemptTests() { |
| assert_equals(testTrack.track.cues.length, 3); |
| testTrack.oncuechange = t.step_func(cueChangedFromTrackElement); |
| video.play(); |
| } |
| |
| var currentCueIndex; |
| var cueChangeCount = 0; |
| function cueChangedFromTrackElement() { |
| currentCueIndex = Math.floor(cueChangeCount / 2); |
| currentCue = event.target.track.cues[currentCueIndex]; |
| if (cueChangeCount % 2 == 0) { |
| // Cue entered. |
| assert_equals(currentCue, testTrack.track.activeCues[0]); |
| assert_equals(currentCue.id, (currentCueIndex + 1).toString()); |
| } |
| |
| ++cueChangeCount; |
| if (cueChangeCount == testTrack.track.cues.length * 2) |
| t.done(); |
| } |
| }); |
| </script> |
| </video> |
