gecko-dev/dom/media/test/test_texttrack_chrome.html

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<!DOCTYPE HTML>
<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=881976
-->
<head>
<meta charset='utf-8'>
<title>Test for Bug 881976 - TextTrackCue Computed Position</title>
<script type="application/javascript" src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"/>
</head>
<body>
<p id="display"></p>
<div id="content">
</div>
<pre id="test">
<script class="testbody" type="text/javascript">
SimpleTest.waitForExplicitFinish();
SpecialPowers.pushPrefEnv({"set": [["media.webvtt.regions.enabled", true]]},
function() {
var video = document.createElement("video");
// Check if adding a text track manually sets the TextTarckList correctly.
video.addTextTrack("subtitles", "", "");
is(video.textTracks[0].textTrackList, video.textTracks, "The Track's TextTrackList should be the Video's TextTrackList.");
// Check if loading a Track via a TrackElement sets the TextTarckList correctly.
video.src = "seek.webm";
video.preload = "auto";
var trackElement = document.createElement("track");
trackElement.src = "basic.vtt";
trackElement.kind = "subtitles";
video.appendChild(trackElement);
document.getElementById("content").appendChild(video);
video.addEventListener("loadedmetadata", function run_tests() {
// Re-que run_tests() at the end of the event loop until the track
// element has loaded its data.
if (trackElement.readyState == 1) {
setTimeout(run_tests, 0);
return;
}
is(trackElement.readyState, 2, "Track::ReadyState should be set to LOADED.");
is(trackElement.track.textTrackList, video.textTracks, "TrackElement's Track's TextTrackList should be the Video's TextTrackList.");
SimpleTest.finish();
});
}
);
</script>
</pre>
</body>
</html>