third_party/WebKit/LayoutTests/fast/mediastream/MediaStream-add-remove-tracks.html

   1 <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN">
   2 <html>
   3 <head>
   4 <script src="../../resources/js-test.js"></script>
   5 </head>
   6 <body>
   7 <script>
   8 description("Test adding and removing tracks.");
   9
  10 var stream1;
  11 var stream2;
  12 var stream3;
  13 var audioTrack;
  14 var videoTrack;
  15
  16 function error() {
  17     testFailed('Stream generation failed.');
  18     finishJSTest();
  19 }
  20
  21 function getUserMedia(dictionary, callback) {
  22     try {
  23         navigator.webkitGetUserMedia(dictionary, callback, error);
  24     } catch (e) {
  25         testFailed('webkitGetUserMedia threw exception :' + e);
  26         finishJSTest();
  27     }
  28 }
  29
  30 function tryAddTrack(stream, track) {
  31     try {
  32         stream.addTrack(track);
  33     } catch (exception) {
  34         testFailed("addTrack threw an exception.");
  35         finishJSTest();
  36     }
  37 }
  38
  39 function tryRemoveTrack(stream, track) {
  40     try {
  41         stream.removeTrack(track);
  42     } catch (exception) {
  43         testFailed("removeTrack threw an exception.");
  44         finishJSTest();
  45     }
  46 }
  47
  48 function shouldNotFire() {
  49     testFailed("\"addtrack\" or \"removetrack\" events should not fire as a result of local addTrack() or removeTrack() operations.");
  50 }
  51
  52 function onStreamInactive() {
  53     testPassed('Stream1 inactive.');
  54     shouldBeFalse('stream1.active');
  55     setTimeout(finishJSTest, 0);
  56 }
  57
  58 function onStreamActive() {
  59     testPassed('Stream1 active.');
  60     shouldBeTrue('stream1.active');
  61     stream1.oninactive = onStreamInactive;
  62     tryRemoveTrack(stream1, stream3.getAudioTracks()[0]);
  63 }
  64
  65 function gotStream3(s) {
  66     stream3 = s;
  67     stream1.onactive = onStreamActive;
  68     tryAddTrack(stream1, stream3.getAudioTracks()[0]);
  69 }
  70
  71 function gotStream2(s) {
  72     stream2 = s;
  73
  74     shouldBe('stream1.getAudioTracks().length', '1');
  75     shouldBe('stream1.getVideoTracks().length', '1');
  76     shouldBe('stream1.getTracks().length', '2');
  77
  78     shouldBe('stream2.getAudioTracks().length', '1');
  79     shouldBe('stream2.getVideoTracks().length', '1');
  80     shouldBe('stream2.getTracks().length', '2');
  81
  82     stream1.onaddtrack = shouldNotFire;
  83     stream1.onremovetrack = shouldNotFire;
  84
  85     // remove a track of each kind
  86     audioTrack = stream1.getAudioTracks()[0];
  87     videoTrack = stream1.getVideoTracks()[0];
  88
  89     tryRemoveTrack(stream1, audioTrack);
  90     // verify removed tracks
  91     shouldBe('stream1.getAudioTracks().length', '0');
  92     // verify that gettracks length is reduced by 1
  93     shouldBe('stream1.getTracks().length', '1');
  94     shouldBeNull('stream1.getTrackById(audioTrack.id)');
  95     // remove a non-existent (already removed) track (should not throw)
  96     tryRemoveTrack(stream1, audioTrack);
  97     // (re-)add tracks
  98     tryAddTrack(stream1, audioTrack);
  99     shouldBeNonNull('stream1.getTrackById(audioTrack.id)');
 100     shouldBe('audioTrack', 'stream1.getAudioTracks()[0]');
 101
 102     tryRemoveTrack(stream1, videoTrack);
 103     shouldBe('stream1.getVideoTracks().length', '0');
 104     // verify that gettracks length is reduced by 1
 105     shouldBe('stream1.getTracks().length', '1');
 106     shouldBeNull('stream1.getTrackById(videoTrack.id)');
 107     tryRemoveTrack(stream1, videoTrack);
 108     tryAddTrack(stream1, videoTrack);
 109
 110     // verify added tracks
 111     shouldBe('stream1.getAudioTracks().length', '1');
 112     shouldBe('stream1.getVideoTracks().length', '1');
 113     shouldBe('stream1.getTracks().length', '2');
 114
 115     // verify that kind and label is preserved
 116     shouldBe('stream1.getAudioTracks()[0].kind', 'audioTrack.kind');
 117     shouldBe('stream1.getAudioTracks()[0].label', 'audioTrack.label');
 118     shouldBe('stream1.getVideoTracks()[0].kind', 'videoTrack.kind');
 119     shouldBe('stream1.getVideoTracks()[0].label', 'videoTrack.label');
 120
 121     // try adding stream1's own tracks
 122     tryAddTrack(stream1, stream1.getAudioTracks()[0]);
 123     tryAddTrack(stream1, stream1.getVideoTracks()[0]);
 124
 125     // verify that nothing has changed
 126     shouldBe('stream1.getAudioTracks().length', '1');
 127     shouldBe('stream1.getVideoTracks().length', '1');
 128     shouldBe('stream1.getTracks().length', '2');
 129
 130     // add new tracks (from stream2)
 131     tryAddTrack(stream1, stream2.getAudioTracks()[0]);
 132     tryAddTrack(stream1, stream2.getVideoTracks()[0]);
 133
 134     // verify added tracks
 135     shouldBe('stream1.getAudioTracks().length', '2');
 136     shouldBe('stream1.getVideoTracks().length', '2');
 137     shouldBe('stream1.getTracks().length', '4');
 138
 139     // when all tracks have been removed, stream.active should return false.
 140     tryRemoveTrack(stream2, stream2.getAudioTracks()[0]);
 141     tryRemoveTrack(stream2, stream2.getVideoTracks()[0]);
 142     shouldBeFalse('stream2.active');
 143
 144     // when all tracks have been stopped, stream.active should return false.
 145     for (var i = 0; i < stream1.getAudioTracks().length; i++)
 146         stream1.getAudioTracks()[i].stop();
 147     for (var i = 0; i < stream1.getVideoTracks().length; i++)
 148         stream1.getVideoTracks()[i].stop();
 149     shouldBeFalse('stream1.active');
 150     getUserMedia({audio:true, video:true}, gotStream3);
 151 }
 152
 153 function gotStream1(s) {
 154     stream1 = s;
 155     getUserMedia({audio:true, video:true}, gotStream2);
 156 }
 157
 158 getUserMedia({audio:true, video:true}, gotStream1);
 159
 160 window.jsTestIsAsync = true;
 161 window.successfullyParsed = true;
 162 </script>
 163 </body>
 164 </html>