src/third_party/WebKit/LayoutTests/imported/web-platform-tests/mediacapture-streams/obtaining-local-multimedia-content/navigatorusermedia/getusermedia-optional-constraint.html

   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 <link rel='stylesheet' href='../../../../../resources/testharness.css' media='all'/>
   8 </head>
   9 <body>
  10 <p class="instructions" style="display:none">When prompted, accept to share your video stream.</p>
  11 <h1 class="instructions" style="display:none">Description</h1>
  12 <p class="instructions" style="display:none">This test checks that setting an optional constraint in
  13 getUserMedia is handled as optional</p>
  14
  15 <div id='log'></div>
  16 <script src=../../../../../resources/testharness.js></script>
  17 <script src=../../../../../resources/testharnessreport.js></script>
  18 <script src="../../../../../resources/vendor-prefix.js" data-prefixed-objects='[{"ancestors":["navigator"], "name":"getUserMedia"}]'></script>
  19 <script>
  20 var t = async_test("Tests that setting an optional constraint in getUserMedia is handled as optional", {timeout:10000});
  21 t.step(function() {
  22   navigator.getUserMedia({video: {optional: [{width: {min:1024}}, {width: {max: 800}}]}},
  23       t.step_func(function (stream) {
  24         assert_equals(stream.getVideoTracks().length, 1, "the media stream has exactly one video track");
  25         t.done();
  26       }),
  27       t.step_func(function(error) {
  28         assert_unreached("an optional constraint can't stop us from obtaining a video stream");
  29       }));
  30 });
  31 </script>
  32 </body>
  33 </html>