testing/web-platform/tests/mediacapture-streams/GUM-trivial-constraint.https.html

   1 <!doctype html>
   2 <html>
   3 <head>
   4 <title>Trivial mandatory constraint 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 a trivial mandatory
  12 constraint (width &gt;=0) in getUserMedia works</p>
  13
  14 <div id='log'></div>
  15 <script src=/resources/testharness.js></script>
  16 <script src=/resources/testharnessreport.js></script>
  17 <script>
  18 var t = async_test("Tests that setting a trivial mandatory constraint in getUserMedia works");
  19 t.step(function() {
  20   navigator.mediaDevices.getUserMedia({video: {width: {min:0}}})
  21     .then(t.step_func(function (stream) {
  22       assert_equals(stream.getVideoTracks().length, 1, "the media stream has exactly one video track");
  23       t.done();
  24     }), t.step_func(function(error) {
  25       assert_unreached("a Video stream of minimally zero width can always be created");
  26       t.done();
  27     }));
  28 });
  29 </script>
  30 </body>
  31 </html>