MediaStream-idl.https.html (4214B)
1 <!doctype html> 2 <html> 3 <head> 4 <title>MediaStream constructor algorithm</title> 5 <link rel="author" title="Dominique Hazael-Massieux" href="mailto:dom@w3.org"/> 6 <link rel="help" href="http://w3c.github.io/mediacapture-main/getusermedia.html#idl-def-MediaStream"> 7 <link rel="help" href="http://w3c.github.io/mediacapture-main/getusermedia.html#widl-MediaStream-id"> 8 <link rel="help" href="http://w3c.github.io/mediacapture-main/getusermedia.html#mediastream"> 9 <link rel="help" href="http://w3c.github.io/mediacapture-main/getusermedia.html#event-mediastreamtrack-ended"> 10 <link rel="help" href="http://w3c.github.io/mediacapture-main/getusermedia.html#widl-MediaStreamTrack-stop-void"> 11 <link rel="help" href="http://w3c.github.io/mediacapture-main/getusermedia.html#widl-MediaStreamTrack-clone-MediaStreamTrack"> 12 </head> 13 <body> 14 <p class="instructions">When prompted, accept to share your video and audio stream.</p> 15 <h1 class="instructions">Description</h1> 16 <p class="instructions">This test checks that the MediaStream constructor 17 follows the algorithm set in the spec.</p> 18 19 <div id='log'></div> 20 <script src=/resources/testharness.js></script> 21 <script src=/resources/testharnessreport.js></script> 22 <script src=/resources/testdriver.js></script> 23 <script src=/resources/testdriver-vendor.js></script> 24 <script src=permission-helper.js></script> 25 <script> 26 promise_test(async () => { 27 await setMediaPermission(); 28 const stream = await navigator.mediaDevices.getUserMedia({video: true, audio:true}) 29 let stream1 = new MediaStream(); 30 assert_not_equals(stream.id, stream1.id, "Two different MediaStreams have different ids"); 31 let stream2 = new MediaStream(stream); 32 assert_not_equals(stream.id, stream2.id, "A MediaStream constructed from another has a different id"); 33 let audioTrack1 = stream.getAudioTracks()[0]; 34 let videoTrack = stream.getVideoTracks()[0]; 35 assert_equals(audioTrack1, stream2.getAudioTracks()[0], "A MediaStream constructed from another shares the same audio track"); 36 assert_equals(videoTrack, stream2.getVideoTracks()[0], "A MediaStream constructed from another shares the same video track"); 37 let stream4 = new MediaStream([audioTrack1]); 38 assert_equals(stream4.getTrackById(audioTrack1.id), audioTrack1, "a non-ended track gets added via the MediaStream constructor"); 39 40 let audioTrack2 = audioTrack1.clone(); 41 audioTrack2.addEventListener("ended", () => { 42 throw new Error("ended event should not be fired by MediaStreamTrack.stop().") 43 }); 44 audioTrack2.stop(); 45 assert_equals(audioTrack2.readyState, "ended", "a stopped track is marked ended synchronously"); 46 47 let stream3 = new MediaStream([audioTrack2, videoTrack]); 48 assert_equals(stream3.getTrackById(audioTrack2.id), audioTrack2, "an ended track gets added via the MediaStream constructor"); 49 assert_equals(stream3.getTrackById(videoTrack.id), videoTrack, "a non-ended track gets added via the MediaStream constructor even if the previous track was ended"); 50 51 let stream5 = new MediaStream([audioTrack2]); 52 assert_equals(stream5.getTrackById(audioTrack2.id), audioTrack2, "an ended track gets added via the MediaStream constructor"); 53 assert_false(stream5.active, "a MediaStream created using the MediaStream() constructor whose arguments are lists of MediaStreamTrack objects that are all ended, the MediaStream object MUST be created with its active attribute set to false"); 54 55 audioTrack1.stop(); 56 assert_equals(audioTrack1.readyState, "ended", 57 "Stopping audioTrack1 marks it ended synchronously"); 58 59 videoTrack.stop(); 60 assert_equals(videoTrack.readyState, "ended", 61 "Stopping videoTrack marks it ended synchronously"); 62 63 assert_false(stream.active, 64 "The original MediaStream is marked inactive synchronously"); 65 assert_false(stream1.active, 66 "MediaStream 1 is marked inactive synchronously"); 67 assert_false(stream2.active, 68 "MediaStream 2 is marked inactive synchronously"); 69 assert_false(stream3.active, 70 "MediaStream 3 is marked inactive synchronously"); 71 assert_false(stream4.active, 72 "MediaStream 4 is marked inactive synchronously"); 73 74 }, "Tests that a MediaStream constructor follows the algorithm set in the spec"); 75 </script> 76 </body> 77 </html>