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<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<script src="/common/media.js"></script>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
</head>
<body>
<script>
async_test(function(test)
{
var video = document.createElement("video");
// Create an out-of-band text track by adding a track element.
var trackElement = document.createElement('track');
trackElement.addEventListener("error", test.step_func(function()
{
assert_unreached("'error' event on track element should not fire.")
}));
video.appendChild(trackElement);
trackElement.src = 'resources/webvtt-file.vtt';
trackElement.track.mode = 'hidden';
assert_equals(video.textTracks.length, 1);
var outOfBandTrack = video.textTracks[0];
// Load a media file with an inband text track.
var inbandTrack = null;
var url = "resources/vp8-vorbis-webvtt.webm"
var firstAddTrackHandler = test.step_func(function()
{
assert_equals(event.target, video.textTracks);
assert_equals(event instanceof window.TrackEvent, true);
if (event.track == outOfBandTrack) {
return;
}
assert_equals(inbandTrack, null);
assert_equals(video.textTracks.length, 2);
assert_equals(event.track, video.textTracks[1]);
inbandTrack = event.track;
video.textTracks.removeEventListener("addtrack", firstAddTrackHandler);
// Clear .src to force the inband track to get destroyed.
video.src = "";
// Verify that the inband track was removed.
assert_not_equals(inbandTrack, null);
assert_equals(video.textTracks.length, 1);
assert_equals(video.textTracks[0], outOfBandTrack);
// Load the URL again to trigger another 'addtrack' event to make sure
// no 'removetrack' event was queued.
video.src = url;
video.textTracks.addEventListener("addtrack", test.step_func(function()
{
assert_equals(video.textTracks.length, 2);
test.done();
}));
});
video.textTracks.addEventListener("addtrack", firstAddTrackHandler);
video.textTracks.addEventListener("removetrack", test.step_func(function()
{
assert_unreached("'removetrack' event should not fire.")
}));
video.src = url;
}, "Tests that the 'removetrack' event is NOT fired for inband TextTrack on a failed load.");
</script>
</body>
</html>
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