mozilla-central/testing/web-platform/tests/mediacapture-streams/MediaStreamTrack-init.https.html

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<!doctype html>
<html>
<head>
<title>getUserMedia({video:true}) creates a stream with a properly initialized video track</title>
<link rel="author" title="Dominique Hazael-Massieux" href="mailto:dom@w3.org"/>
</head>
<body>
<p class="instructions">When prompted, accept to share your video stream.</p>
<h1 class="instructions">Description</h1>
<p class="instructions">This test checks that the video track of MediaStream
object returned by the success callback in getUserMedia is correctly initialized.</p>
<div id='log'></div>
<script src=/resources/testharness.js></script>
<script src=/resources/testharnessreport.js></script>
<script src=/resources/testdriver.js></script>
<script src=/resources/testdriver-vendor.js></script>
<script src=permission-helper.js></script>
<script>
promise_test(async () => {
await setMediaPermission("granted", ["camera"]);
const stream = await navigator.mediaDevices.getUserMedia({video: true});
const videoTracks = stream.getVideoTracks();
assert_equals(videoTracks.length, 1, "There is exactly one video track in the media stream");
track = videoTracks[0];
assert_equals(track.readyState, "live", "The track object is in live state");
assert_equals(track.kind, "video", "The track object is of video kind");
// Not clear that this is required by the spec,
assert_true(track.enabled, "The track object is enabed");
});
</script>
</body>
</html>