| <!doctype html> |
| <html> |
| <head> |
| <title>MediaStream constructor algorithm</title> |
| <link rel="author" title="Dominique Hazael-Massieux" href="mailto:dom@w3.org"/> |
| <link rel="help" href="http://w3c.github.io/mediacapture-main/getusermedia.html#idl-def-MediaStream"> |
| <link rel="help" href="http://w3c.github.io/mediacapture-main/getusermedia.html#widl-MediaStream-id"> |
| <link rel="help" href="http://w3c.github.io/mediacapture-main/getusermedia.html#mediastream"> |
| <link rel="help" href="http://w3c.github.io/mediacapture-main/getusermedia.html#event-mediastreamtrack-ended"> |
| <link rel="help" href="http://w3c.github.io/mediacapture-main/getusermedia.html#widl-MediaStreamTrack-stop-void"> |
| <link rel="help" href="http://w3c.github.io/mediacapture-main/getusermedia.html#widl-MediaStreamTrack-clone-MediaStreamTrack"> |
| </head> |
| <body> |
| <p class="instructions">When prompted, accept to share your video and audio stream.</p> |
| <h1 class="instructions">Description</h1> |
| <p class="instructions">This test checks that the MediaStream constructor |
| follows the algorithm set in the spec.</p> |
| |
| <div id='log'></div> |
| <script src=/resources/testharness.js></script> |
| <script src=/resources/testharnessreport.js></script> |
| <script> |
| let t = async_test("Tests that a MediaStream constructor follows the algorithm set in the spec"); |
| t.step(() => { |
| navigator.mediaDevices.getUserMedia({video: true, audio:true}) |
| .then(t.step_func(stream => { |
| let stream1 = new MediaStream(); |
| assert_not_equals(stream.id, stream1.id, "Two different MediaStreams have different ids"); |
| let stream2 = new MediaStream(stream); |
| assert_not_equals(stream.id, stream2.id, "A MediaStream constructed from another has a different id"); |
| let audioTrack1 = stream.getAudioTracks()[0]; |
| let videoTrack = stream.getVideoTracks()[0]; |
| assert_equals(audioTrack1, stream2.getAudioTracks()[0], "A MediaStream constructed from another shares the same audio track"); |
| assert_equals(videoTrack, stream2.getVideoTracks()[0], "A MediaStream constructed from another shares the same video track"); |
| let stream4 = new MediaStream([audioTrack1]); |
| assert_equals(stream4.getTrackById(audioTrack1.id), audioTrack1, "a non-ended track gets added via the MediaStream constructor"); |
| |
| let audioTrack2 = audioTrack1.clone(); |
| audioTrack2.addEventListener("ended", t.unreached_func("ended event should not be fired by MediaStreamTrack.stop().")); |
| audioTrack2.stop(); |
| assert_equals(audioTrack2.readyState, "ended", "a stopped track is marked ended synchronously"); |
| |
| let stream3 = new MediaStream([audioTrack2, videoTrack]); |
| assert_equals(stream3.getTrackById(audioTrack2.id), audioTrack2, "an ended track gets added via the MediaStream constructor"); |
| assert_equals(stream3.getTrackById(videoTrack.id), videoTrack, "a non-ended track gets added via the MediaStream constructor even if the previous track was ended"); |
| |
| let stream5 = new MediaStream([audioTrack2]); |
| assert_equals(stream5.getTrackById(audioTrack2.id), audioTrack2, "an ended track gets added via the MediaStream constructor"); |
| 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"); |
| |
| audioTrack1.stop(); |
| assert_equals(audioTrack1.readyState, "ended", |
| "Stopping audioTrack1 marks it ended synchronously"); |
| |
| videoTrack.stop(); |
| assert_equals(videoTrack.readyState, "ended", |
| "Stopping videoTrack marks it ended synchronously"); |
| |
| assert_false(stream.active, |
| "The original MediaStream is marked inactive synchronously"); |
| assert_false(stream1.active, |
| "MediaStream 1 is marked inactive synchronously"); |
| assert_false(stream2.active, |
| "MediaStream 2 is marked inactive synchronously"); |
| assert_false(stream3.active, |
| "MediaStream 3 is marked inactive synchronously"); |
| assert_false(stream4.active, |
| "MediaStream 4 is marked inactive synchronously"); |
| |
| // Use a timeout to detect a misfire of the ended event. |
| t.step_timeout(t.step_func_done()); |
| }) |
| ); |
| }); |
| </script> |
| </body> |
| </html> |
