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<!doctype html>
<html>
<head>
<title>Removing a track from a MediaStream</title>
<link rel="author" title="Dominique Hazael-Massieux" href="mailto:dom@w3.org"/>
<link rel="help" href="http://dev.w3.org/2011/webrtc/editor/getusermedia.html#widl-MediaStreamTrackList-remove-void-MediaStreamTrack-track">
<link rel="help" href="http://dev.w3.org/2011/webrtc/editor/getusermedia.html#event-mediastream-removetrack">
</head>
<body>
<p class="instructions">When prompted, accept to share your audio stream, then your video stream.</p>
<h1 class="instructions">Description</h1>
<p class="instructions">This test checks that removinging a track from a MediaStream works as expected.</p>
<div id='log'></div>
<script src=/resources/testharness.js></script>
<script src=/resources/testharnessreport.js></script>
<script src="/common/vendor-prefix.js" data-prefixed-objects='[{"ancestors":["navigator"], "name":"getUserMedia"}]'></script>
<script>
var t = async_test("Tests that a removal from a MediaStream works as expected", {timeout:10000});
t.step(function () {
var audio;
navigator.getUserMedia({audio:true}, gotAudio, function(error) {});
function gotAudio(stream) {
audio = stream;
navigator.getUserMedia({video:true}, gotVideo, function(error) {});
}
function gotVideo(stream) {
var video = stream;
video.onremovetrack = function () {
assert_unreached("onremovetrack is not triggered when removal of track is triggered by the script itself");
};
t.step(function () {
assert_equals(video.getVideoTracks().length, 1, "video mediastream starts with one video track");
video.removeTrack(video.getVideoTracks()[0]);
assert_equals(video.getVideoTracks().length, 0, "video mediastream has no video track left");
video.removeTrack(audio.getAudioTracks()[0]); // should not throw
});
t.step(function() {
t.done();
});
}
});
</script>
</body>
</html>
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