MediaStream-add-audio-track.https.html (2097B)
1 <!doctype html> 2 <html> 3 <head> 4 <title>Adding a track to a MediaStream</title> 5 <link rel="author" title="Dominique Hazael-Massieux" href="mailto:dom@w3.org"/> 6 <link rel="help" href="http://dev.w3.org/2011/webrtc/editor/getusermedia.html#widl-MediaStreamTrackList-add-void-MediaStreamTrack-track"> 7 <link rel="help" href="http://dev.w3.org/2011/webrtc/editor/getusermedia.html#event-mediastream-addtrack"> 8 </head> 9 <body> 10 <p class="instructions">When prompted, accept to share your audio stream, then your video stream.</p> 11 <h1 class="instructions">Description</h1> 12 <p class="instructions">This test checks that adding a track to a MediaStream works as expected.</p> 13 14 <div id='log'></div> 15 <script src=/resources/testharness.js></script> 16 <script src=/resources/testharnessreport.js></script> 17 <script src=/resources/testdriver.js></script> 18 <script src=/resources/testdriver-vendor.js></script> 19 <script src=permission-helper.js></script> 20 <script> 21 promise_test(async t => { 22 await setMediaPermission(); 23 const audio = await navigator.mediaDevices.getUserMedia({audio: true}); 24 const video = await navigator.mediaDevices.getUserMedia({video: true}); 25 assert_equals(video.getAudioTracks().length, 0, "video mediastream starts with no audio track"); 26 video.addTrack(audio.getAudioTracks()[0]); 27 assert_equals(video.getAudioTracks().length, 1, "video mediastream has now one audio track"); 28 video.addTrack(audio.getAudioTracks()[0]); 29 // If track is already in stream's track set, then abort these steps. 30 assert_equals(video.getAudioTracks().length, 1, "video mediastream still has one audio track"); 31 32 audio.onaddtrack = t.step_func(function () { 33 assert_unreached("onaddtrack is not fired when the script directly modified the track of a mediastream"); 34 }); 35 36 assert_equals(audio.getVideoTracks().length, 0, "audio mediastream starts with no video track"); 37 audio.addTrack(video.getVideoTracks()[0]); 38 assert_equals(audio.getVideoTracks().length, 1, "audio mediastream now has one video track"); 39 }, "Tests that adding a track to a MediaStream works as expected"); 40 </script> 41 </body> 42 </html>