зеркало из https://github.com/mozilla/gecko-dev.git
127 строки
4.9 KiB
HTML
127 строки
4.9 KiB
HTML
<!DOCTYPE HTML>
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<html>
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<!--
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https://bugzilla.mozilla.org/show_bug.cgi?id=833386
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-->
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<head>
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<meta charset='utf-8'>
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<title>Test for Bug 833386 - TextTrackList</title>
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<script type="text/javascript" src="/MochiKit/MochiKit.js"></script>
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<script src="/tests/SimpleTest/SimpleTest.js"></script>
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<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
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</head>
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<body>
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<p id="display"></p>
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<div id="content" style="display: none">
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</div>
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<pre id="test">
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<script class="testbody" type="text/javascript">
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SimpleTest.waitForExplicitFinish();
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SpecialPowers.pushPrefEnv({"set": [["media.webvtt.regions.enabled", true]]},
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function() {
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var video = document.createElement("video");
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isnot(video.textTracks, undefined, "HTMLMediaElement::TextTrack() property should be available.")
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var trackList = video.textTracks;
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is(trackList.length, 0, "Length should be 0.");
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ok(typeof video.addTextTrack == "function", "HTMLMediaElement::AddTextTrack() function should be available.")
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video.addTextTrack("subtitles", "third", "en-CA");
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is(trackList.length, 1, "Length should be 1.");
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var textTrack = video.textTracks[0];
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is(textTrack.label, "third", "Label should be set to third.");
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is(textTrack.language, "en-CA", "Language should be en-CA.");
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is(textTrack.kind, "subtitles", "Default kind should be subtitles.");
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is(textTrack.mode, "hidden", "Default mode should be hidden.");
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// Mode should not allow a bogus value.
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textTrack.mode = 'bogus';
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is(textTrack.mode, 'hidden', "Mode should be not allow a bogus value.");
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// Should allow all these values for mode.
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checkMode("showing", "Mode should allow \"showing\"");
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checkMode("disabled", "Mode should allow \"disabled\"");
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checkMode("hidden", "Mode should allow \"hidden\"");
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// All below are read-only properties and so should not allow setting.
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textTrack.label = "French subtitles";
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is(textTrack.label, "third", "Label is read-only so should still be \"label\".");
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textTrack.language = "en";
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is(textTrack.language, "en-CA", "Language is read-only so should still be \"en-CA\".");
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textTrack.kind = "captions";
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is(textTrack.kind, "subtitles", "Kind is read-only so should still be \"subtitles\"");
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function checkMode(value, message) {
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textTrack.mode = value;
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is(textTrack.mode, value, message);
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}
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// Insert some tracks in an order that is not sorted, we will test if they
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// are sorted later.
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var trackOne = document.createElement("track");
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trackOne.label = "first";
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trackOne.src = "basic.vtt";
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trackOne.default = true;
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trackOne.id = "2";
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video.appendChild(trackOne);
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video.addTextTrack("subtitles", "fourth", "en-CA");
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var trackTwo = document.createElement("track");
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trackTwo.label = "second";
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trackTwo.src = "basic.vtt";
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trackTwo.default = true;
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video.appendChild(trackTwo);
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video.src = "seek.webm";
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video.preload = "metadata";
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document.getElementById("content").appendChild(video);
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video.addEventListener("loadedmetadata", function run_tests() {
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// Re-que run_tests() at the end of the event loop until the track
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// element has loaded its data.
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if (trackOne.readyState == 1 || trackTwo.readyState == 1) {
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setTimeout(run_tests, 0);
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return;
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}
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is(trackOne.readyState, 2, "First Track::ReadyState should be set to LOADED.");
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is(trackTwo.readyState, 2, "Second Track::ReadyState should be set to LOADED.");
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// We're testing two things here, firstly that tracks created from a track
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// element have a default mode 'disabled' and tracks created with the
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// 'addTextTrack' method have a default mode of 'hidden'.
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// Secondly we're testing that the tracks are sorted properly.
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// For the tracks to be sorted the first two tracks, added through a
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// TrackElement, must occupy the first two indexes in their TrackElement
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// tree order. The second two tracks, added through the 'addTextTrack'
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// method, will occupy the last two indexes in the order that they were
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// added in.
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var trackData = [
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{ label: "first", mode: "showing", id: "2" },
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{ label: "second", mode: "disabled", id: "" },
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{ label: "third", mode: "hidden", id: "" },
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{ label: "fourth", mode: "hidden", id: "" }
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];
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is(video.textTracks.length, trackData.length, "TextTracks length should be " + trackData.length);
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for (var i = 0; i < trackData.length; i++) {
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var track = video.textTracks[i];
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isnot(track, null, "Video should have a text track at index " + i);
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var info = trackData[i];
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for (var key in info) {
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is(track[key], info[key], "Track at index " + i + " should have a '" + key + "'' property " +
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"with a value of '" + info[key] + "'.");
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}
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}
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SimpleTest.finish();
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});
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});
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</script>
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</pre>
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</body>
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</html>
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