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+<!DOCTYPE HTML>
+<html>
+<head>
+ <title>Test track interfaces when consuming media resources</title>
+ <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+ <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+ <script type="text/javascript" src="manifest.js"></script>
+</head>
+<body>
+<pre id="test">
+<script class="testbody" type="text/javascript">
+
+var manager = new MediaTestManager;
+
+function startTest(test, token) {
+ var elemType = getMajorMimeType(test.type);
+ var element = document.createElement(elemType);
+
+ var audioOnchange = 0;
+ var audioOnaddtrack = 0;
+ var audioOnremovetrack = 0;
+ var videoOnchange = 0;
+ var videoOnaddtrack = 0;
+ var videoOnremovetrack = 0;
+ var isPlaying = false;
+
+ isnot(element.audioTracks, undefined,
+ 'HTMLMediaElement::AudioTracks() property should be available.');
+ isnot(element.videoTracks, undefined,
+ 'HTMLMediaElement::VideoTracks() property should be available.');
+
+ element.audioTracks.onaddtrack = function(e) {
+ audioOnaddtrack++;
+ }
+
+ element.audioTracks.onremovetrack = function(e) {
+ audioOnremovetrack++;
+ }
+
+ element.audioTracks.onchange = function(e) {
+ audioOnchange++;
+ }
+
+ element.videoTracks.onaddtrack = function(e) {
+ videoOnaddtrack++;
+ }
+
+ element.videoTracks.onremovetrack = function(e) {
+ videoOnremovetrack++;
+ }
+
+ element.videoTracks.onchange = function(e) {
+ videoOnchange++;
+ }
+
+ function checkTrackRemoved() {
+ if (isPlaying) {
+ if (test.hasAudio) {
+ is(audioOnremovetrack, 1, 'Calls of onremovetrack on audioTracks should be 1.');
+ is(element.audioTracks.length, 0, 'The length of audioTracks should be 0.');
+ }
+ if (test.hasVideo) {
+ is(videoOnremovetrack, 1, 'Calls of onremovetrack on videoTracks should be 1.');
+ is(element.videoTracks.length, 0, 'The length of videoTracks should be 0.');
+ }
+ }
+ }
+
+ function onended() {
+ ok(true, 'Event ended is expected to be fired on element.');
+ checkTrackRemoved();
+ element.onended = null;
+ element.onplaying = null;
+ element.onpause = null;
+ manager.finished(element.token);
+ }
+
+ function checkTrackAdded() {
+ isPlaying = true;
+ if (test.hasAudio) {
+ is(audioOnaddtrack, 1, 'Calls of onaddtrack on audioTracks should be 1.');
+ is(element.audioTracks.length, 1, 'The length of audioTracks should be 1.');
+ ok(element.audioTracks[0].enabled, 'Audio track should be enabled as default.');
+ }
+ if (test.hasVideo) {
+ is(videoOnaddtrack, 1, 'Calls of onaddtrack on videoTracks should be 1.');
+ is(element.videoTracks.length, 1, 'The length of videoTracks should be 1.');
+ is(element.videoTracks.selectedIndex, 0,
+ 'The first video track is set selected as default.');
+ }
+ }
+
+ function setTrackEnabled(enabled) {
+ if (test.hasAudio) {
+ element.audioTracks[0].enabled = enabled;
+ }
+ if (test.hasVideo) {
+ element.videoTracks[0].selected = enabled;
+ }
+ }
+
+ function checkTrackChanged(calls, enabled) {
+ if (test.hasAudio) {
+ is(audioOnchange, calls, 'Calls of onchange on audioTracks should be '+calls);
+ is(element.audioTracks[0].enabled, enabled,
+ 'Enabled value of the audio track should be ' +enabled);
+ }
+ if (test.hasVideo) {
+ is(videoOnchange, calls, 'Calls of onchange on videoTracks should be '+calls);
+ is(element.videoTracks[0].selected, enabled,
+ 'Selected value of the video track should be ' +enabled);
+ var index = enabled ? 0 : -1;
+ is(element.videoTracks.selectedIndex, index,
+ 'SelectedIndex of video tracks should be ' +index);
+ }
+ }
+
+ function onpause() {
+ element.onpause = null;
+ if (element.ended) {
+ return;
+ }
+ if (steps == 1) {
+ setTrackEnabled(false);
+ element.onplaying = onplaying;
+ element.play();
+ steps++;
+ } else if (steps == 2) {
+ setTrackEnabled(true);
+ element.onplaying = onplaying;
+ element.play();
+ steps++;
+ }
+ }
+
+ function onplaying() {
+ element.onplaying = null;
+ if (element.ended) {
+ return;
+ }
+ if (steps == 1) {
+ element.onpause = onpause;
+ element.pause();
+ checkTrackAdded();
+ } else if (steps == 2) {
+ element.onpause = onpause;
+ element.pause();
+ checkTrackChanged(1, false);
+ } else if (steps == 3) {
+ checkTrackChanged(2, true);
+ }
+ }
+
+ var steps = 0;
+
+ element.token = token;
+ manager.started(token);
+
+ element.src = test.name;
+ element.test = test;
+ element.onplaying = onplaying;
+ element.onended = onended;
+ element.play();
+ steps++;
+}
+
+SimpleTest.waitForExplicitFinish();
+SpecialPowers.pushPrefEnv(
+ {
+ "set": [
+ ["media.track.enabled", true]
+ ]
+ },
+ function() {
+ manager.runTests(gTrackTests, startTest);
+ });
+
+</script>
+</pre>
+</body>
+</html>