GUM-optional-constraint.https.html (1503B)
1 <!doctype html> 2 <html> 3 <head> 4 <title>Optional constraint recognized as optional in getUserMedia</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-NavigatorUserMedia-getUserMedia-void-MediaStreamConstraints-constraints-NavigatorUserMediaSuccessCallback-successCallback-NavigatorUserMediaErrorCallback-errorCallback"> 7 </head> 8 <body> 9 <p class="instructions">When prompted, accept to share your video stream.</p> 10 <h1 class="instructions">Description</h1> 11 <p class="instructions">This test checks that setting an optional constraint in 12 getUserMedia is handled as optional</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 () => { 22 await setMediaPermission("granted", ["camera"]); 23 try { 24 const stream = await navigator.mediaDevices.getUserMedia({video: {advanced: [{width: {min:1024, max: 800}}]}}); 25 assert_equals(stream.getVideoTracks().length, 1, "the media stream has exactly one video track"); 26 } catch (error) { 27 assert_unreached("an optional constraint can't stop us from obtaining a video stream"); 28 } 29 }, "Tests that setting an optional constraint in getUserMedia is handled as optional"); 30 </script> 31 </body> 32 </html>