third_party/blink/web_tests/fast/mediastream/MediaStream-add-remove-tracks.html - chromium/src - Git at Google

 <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN">
 <html>
 <head>
 <script src="../../resources/js-test.js"></script>
 </head>
 <body>
 <script>
 description("Test adding and removing tracks.");

 var stream1;
 var stream2;
 var stream3;
 var audioTrack;
 var videoTrack;

 function error() {
     testFailed('Stream generation failed.');
     finishJSTest();
 }

 function getUserMedia(dictionary, callback) {
     try {
         navigator.webkitGetUserMedia(dictionary, callback, error);
     } catch (e) {
         testFailed('webkitGetUserMedia threw exception :' + e);
         finishJSTest();
     }
 }

 function tryAddTrack(stream, track) {
     try {
         stream.addTrack(track);
     } catch (exception) {
         testFailed("addTrack threw an exception.");
         finishJSTest();
     }
 }

 function tryRemoveTrack(stream, track) {
     try {
         stream.removeTrack(track);
     } catch (exception) {
         testFailed("removeTrack threw an exception.");
         finishJSTest();
     }
 }

 function shouldNotFire() {
     testFailed("\"addtrack\" or \"removetrack\" events should not fire as a result of local addTrack() or removeTrack() operations.");
 }

 function onStreamInactive() {
     testPassed('Stream1 inactive.');
     shouldBeFalse('stream1.active');
     setTimeout(finishJSTest, 0);
 }

 function onStreamActive() {
     testPassed('Stream1 active.');
     shouldBeTrue('stream1.active');
     stream1.oninactive = onStreamInactive;
     tryRemoveTrack(stream1, stream3.getAudioTracks()[0]);
 }

 function gotStream3(s) {
     stream3 = s;
     stream1.onactive = onStreamActive;
     // onstreamactive doesn't work any more, so this test makes no more sense.
     // crbug.com/781716
     // tryAddTrack(stream1, stream3.getAudioTracks()[0]);
     finishJSTest();
 }

 function gotStream2(s) {
     stream2 = s;

     shouldBe('stream1.getAudioTracks().length', '1');
     shouldBe('stream1.getVideoTracks().length', '1');
     shouldBe('stream1.getTracks().length', '2');

     shouldBe('stream2.getAudioTracks().length', '1');
     shouldBe('stream2.getVideoTracks().length', '1');
     shouldBe('stream2.getTracks().length', '2');

     stream1.onaddtrack = shouldNotFire;
     stream1.onremovetrack = shouldNotFire;

     // remove a track of each kind
     audioTrack = stream1.getAudioTracks()[0];
     videoTrack = stream1.getVideoTracks()[0];

     tryRemoveTrack(stream1, audioTrack);
     // verify removed tracks
     shouldBe('stream1.getAudioTracks().length', '0');
     // verify that gettracks length is reduced by 1
     shouldBe('stream1.getTracks().length', '1');
     shouldBeNull('stream1.getTrackById(audioTrack.id)');
     // remove a non-existent (already removed) track (should not throw)
     tryRemoveTrack(stream1, audioTrack);
     // (re-)add tracks
     tryAddTrack(stream1, audioTrack);
     shouldBeNonNull('stream1.getTrackById(audioTrack.id)');
     shouldBe('audioTrack', 'stream1.getAudioTracks()[0]');

     tryRemoveTrack(stream1, videoTrack);
     shouldBe('stream1.getVideoTracks().length', '0');
     // verify that gettracks length is reduced by 1
     shouldBe('stream1.getTracks().length', '1');
     shouldBeNull('stream1.getTrackById(videoTrack.id)');
     tryRemoveTrack(stream1, videoTrack);
     tryAddTrack(stream1, videoTrack);

     // verify added tracks
     shouldBe('stream1.getAudioTracks().length', '1');
     shouldBe('stream1.getVideoTracks().length', '1');
     shouldBe('stream1.getTracks().length', '2');

     // verify that kind and label is preserved
     shouldBe('stream1.getAudioTracks()[0].kind', 'audioTrack.kind');
     shouldBe('stream1.getAudioTracks()[0].label', 'audioTrack.label');
     shouldBe('stream1.getVideoTracks()[0].kind', 'videoTrack.kind');
     shouldBe('stream1.getVideoTracks()[0].label', 'videoTrack.label');

     // try adding stream1's own tracks
     tryAddTrack(stream1, stream1.getAudioTracks()[0]);
     tryAddTrack(stream1, stream1.getVideoTracks()[0]);

     // verify that nothing has changed
     shouldBe('stream1.getAudioTracks().length', '1');
     shouldBe('stream1.getVideoTracks().length', '1');
     shouldBe('stream1.getTracks().length', '2');

     // add new tracks (from stream2)
     tryAddTrack(stream1, stream2.getAudioTracks()[0]);
     tryAddTrack(stream1, stream2.getVideoTracks()[0]);

     // verify added tracks
     shouldBe('stream1.getAudioTracks().length', '2');
     shouldBe('stream1.getVideoTracks().length', '2');
     shouldBe('stream1.getTracks().length', '4');

     // when all tracks have been removed, stream.active should return false.
     tryRemoveTrack(stream2, stream2.getAudioTracks()[0]);
     tryRemoveTrack(stream2, stream2.getVideoTracks()[0]);
     shouldBeFalse('stream2.active');

     // when all tracks have been stopped, stream.active should return false.
     for (var i = 0; i < stream1.getAudioTracks().length; i++)
         stream1.getAudioTracks()[i].stop();
     for (var i = 0; i < stream1.getVideoTracks().length; i++)
         stream1.getVideoTracks()[i].stop();
     shouldBeFalse('stream1.active');
     getUserMedia({audio:true, video:true}, gotStream3);
 }

 function gotStream1(s) {
     stream1 = s;
     getUserMedia({audio:true, video:true}, gotStream2);
 }

 getUserMedia({audio:true, video:true}, gotStream1);

 window.jsTestIsAsync = true;
 window.successfullyParsed = true;
 </script>
 </body>
 </html>
	<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN">
	<html>
	<head>
	<script src="../../resources/js-test.js"></script>
	</head>
	<body>
	<script>
	description("Test adding and removing tracks.");

	var stream1;
	var stream2;
	var stream3;
	var audioTrack;
	var videoTrack;

	function error() {
	testFailed('Stream generation failed.');
	finishJSTest();
	}

	function getUserMedia(dictionary, callback) {
	try {
	navigator.webkitGetUserMedia(dictionary, callback, error);
	} catch (e) {
	testFailed('webkitGetUserMedia threw exception :' + e);
	finishJSTest();
	}
	}

	function tryAddTrack(stream, track) {
	try {
	stream.addTrack(track);
	} catch (exception) {
	testFailed("addTrack threw an exception.");
	finishJSTest();
	}
	}

	function tryRemoveTrack(stream, track) {
	try {
	stream.removeTrack(track);
	} catch (exception) {
	testFailed("removeTrack threw an exception.");
	finishJSTest();
	}
	}

	function shouldNotFire() {
	testFailed("\"addtrack\" or \"removetrack\" events should not fire as a result of local addTrack() or removeTrack() operations.");
	}

	function onStreamInactive() {
	testPassed('Stream1 inactive.');
	shouldBeFalse('stream1.active');
	setTimeout(finishJSTest, 0);
	}

	function onStreamActive() {
	testPassed('Stream1 active.');
	shouldBeTrue('stream1.active');
	stream1.oninactive = onStreamInactive;
	tryRemoveTrack(stream1, stream3.getAudioTracks()[0]);
	}

	function gotStream3(s) {
	stream3 = s;
	stream1.onactive = onStreamActive;
	// onstreamactive doesn't work any more, so this test makes no more sense.
	// crbug.com/781716
	// tryAddTrack(stream1, stream3.getAudioTracks()[0]);
	finishJSTest();
	}

	function gotStream2(s) {
	stream2 = s;

	shouldBe('stream1.getAudioTracks().length', '1');
	shouldBe('stream1.getVideoTracks().length', '1');
	shouldBe('stream1.getTracks().length', '2');

	shouldBe('stream2.getAudioTracks().length', '1');
	shouldBe('stream2.getVideoTracks().length', '1');
	shouldBe('stream2.getTracks().length', '2');

	stream1.onaddtrack = shouldNotFire;
	stream1.onremovetrack = shouldNotFire;

	// remove a track of each kind
	audioTrack = stream1.getAudioTracks()[0];
	videoTrack = stream1.getVideoTracks()[0];

	tryRemoveTrack(stream1, audioTrack);
	// verify removed tracks
	shouldBe('stream1.getAudioTracks().length', '0');
	// verify that gettracks length is reduced by 1
	shouldBe('stream1.getTracks().length', '1');
	shouldBeNull('stream1.getTrackById(audioTrack.id)');
	// remove a non-existent (already removed) track (should not throw)
	tryRemoveTrack(stream1, audioTrack);
	// (re-)add tracks
	tryAddTrack(stream1, audioTrack);
	shouldBeNonNull('stream1.getTrackById(audioTrack.id)');
	shouldBe('audioTrack', 'stream1.getAudioTracks()[0]');

	tryRemoveTrack(stream1, videoTrack);
	shouldBe('stream1.getVideoTracks().length', '0');
	// verify that gettracks length is reduced by 1
	shouldBe('stream1.getTracks().length', '1');
	shouldBeNull('stream1.getTrackById(videoTrack.id)');
	tryRemoveTrack(stream1, videoTrack);
	tryAddTrack(stream1, videoTrack);

	// verify added tracks
	shouldBe('stream1.getAudioTracks().length', '1');
	shouldBe('stream1.getVideoTracks().length', '1');
	shouldBe('stream1.getTracks().length', '2');

	// verify that kind and label is preserved
	shouldBe('stream1.getAudioTracks()[0].kind', 'audioTrack.kind');
	shouldBe('stream1.getAudioTracks()[0].label', 'audioTrack.label');
	shouldBe('stream1.getVideoTracks()[0].kind', 'videoTrack.kind');
	shouldBe('stream1.getVideoTracks()[0].label', 'videoTrack.label');

	// try adding stream1's own tracks
	tryAddTrack(stream1, stream1.getAudioTracks()[0]);
	tryAddTrack(stream1, stream1.getVideoTracks()[0]);

	// verify that nothing has changed
	shouldBe('stream1.getAudioTracks().length', '1');
	shouldBe('stream1.getVideoTracks().length', '1');
	shouldBe('stream1.getTracks().length', '2');

	// add new tracks (from stream2)
	tryAddTrack(stream1, stream2.getAudioTracks()[0]);
	tryAddTrack(stream1, stream2.getVideoTracks()[0]);

	// verify added tracks
	shouldBe('stream1.getAudioTracks().length', '2');
	shouldBe('stream1.getVideoTracks().length', '2');
	shouldBe('stream1.getTracks().length', '4');

	// when all tracks have been removed, stream.active should return false.
	tryRemoveTrack(stream2, stream2.getAudioTracks()[0]);
	tryRemoveTrack(stream2, stream2.getVideoTracks()[0]);
	shouldBeFalse('stream2.active');

	// when all tracks have been stopped, stream.active should return false.
	for (var i = 0; i < stream1.getAudioTracks().length; i++)
	stream1.getAudioTracks()[i].stop();
	for (var i = 0; i < stream1.getVideoTracks().length; i++)
	stream1.getVideoTracks()[i].stop();
	shouldBeFalse('stream1.active');
	getUserMedia({audio:true, video:true}, gotStream3);
	}

	function gotStream1(s) {
	stream1 = s;
	getUserMedia({audio:true, video:true}, gotStream2);
	}

	getUserMedia({audio:true, video:true}, gotStream1);

	window.jsTestIsAsync = true;
	window.successfullyParsed = true;
	</script>
	</body>
	</html>