gecko-dev/content/media/test/test_texttrackcue.html

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<!DOCTYPE HTML>
<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=833386
-->
<head>
<meta charset='utf-8'>
<title>Test for Bug 833386 - HTMLTrackElement</title>
<script type="text/javascript" src="/MochiKit/MochiKit.js"></script>
<script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
<link rel="stylesheet" type="text/css" href="/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.enabled", true]]},
function() {
var video = document.createElement("video");
video.src = "seek.webm";
video.preload = "auto";
var trackElement = document.createElement("track");
trackElement.src = "basic.vtt";
trackElement.kind = "subtitles";
document.getElementById("content").appendChild(video);
video.appendChild(trackElement);
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.");
var cueList = trackElement.track.cues;
is(cueList.length, 4, "Cue list length should be 4.");
// Check that the typedef of TextTrackCue works in Gecko.
is(window.TextTrackCue, undefined, "TextTrackCue should be undefined.");
isnot(window.VTTCue, undefined, "VTTCue should be defined.");
// Check if first cue was parsed correctly.
var cue = cueList[0];
is(cue.id, "1", "Cue's ID should be 1.");
is(cue.startTime, 0.5, "Cue's start time should be 0.5.");
is(cue.endTime, 0.7, "Cue's end time should be 0.7.");
is(cue.pauseOnExit, false, "Cue's pause on exit flag should be false.");
is(cue.text, "This", "Cue's text should be set correctly.");
// TODO: https://bugzilla.mozilla.org/show_bug.cgi?id=879431
// GetTrack() isn't implemented so this *is* returning undefined currently.
todo_isnot(cue.track, undefined, "Cue's track should be defined.");
// Check that all cue times were not rounded
is(cueList[1].startTime, 1.2, "Second cue's start time should be 1.2.");
is(cueList[1].endTime, 2.4, "Second cue's end time should be 2.4.");
is(cueList[2].startTime, 2.71, "Third cue's start time should be 2.71.");
is(cueList[2].endTime, 2.91, "Third cue's end time should be 2.91.");
is(cueList[3].startTime, 3.217, "Fourth cue's start time should be 3.217.");
is(cueList[3].endTime, 3.989, "Fourth cue's end time should be 3.989.");
// Check that Cue setters are working correctly.
cue.id = "Cue 01";
is(cue.id, "Cue 01", "Cue's ID should be 'Cue 01'.");
cue.startTime = 1.5;
is(cue.startTime, 1.5, "Cue's start time should be 1.5.");
cue.endTime = 2.5;
is(cue.endTime, 2.5, "Cue's end time should be 2.5.");
cue.pauseOnExit = true;
is(cue.pauseOnExit, true, "Cue's pause on exit flag should be true.");
// Check that we can create and add new VTTCues
var vttCue = new VTTCue(3.999, 4, "foo");
trackElement.track.addCue(vttCue);
is(cueList.length, 5, "Cue list length should now be 5.");
// Check that new VTTCue was added correctly
cue = cueList[4];
is(cue.startTime, 3.999, "Cue's start time should be 3.999.");
is(cue.endTime, 4, "Cue's end time should be 4.");
is(cue.text, "foo", "Cue's text should be foo.");
// Adding the same cue again should not increase the cue count.
trackElement.track.addCue(vttCue);
is(cueList.length, 5, "Cue list length should be 5.");
// Check that we are able to remove cues.
trackElement.track.removeCue(cue);
is(cueList.length, 4, "Cue list length should be 4.");
var exceptionHappened = false;
try {
// We should not be able to remove a cue that is not in the list.
cue = new VTTCue(1, 2, "foo");
trackElement.track.removeCue(cue);
} catch (e) {
// "NotFoundError" should be thrown when trying to remove a cue that is
// not in the list.
is(e.name, "NotFoundError", "Should have thrown NotFoundError.");
exceptionHappened = true;
}
// If this is false then we did not throw an error and probably removed a cue
// when we shouln't have.
ok(exceptionHappened, "Exception should have happened.");
is(cueList.length, 4, "Cue list length should be 4.");
SimpleTest.finish();
});
}
);
</script>
</pre>
</body>
</html>