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<!doctype html>
<html>
<head>
<title>Trivial mandatory constraint in getUserMedia</title>
<link rel="author" title="Dominique Hazael-Massieux" href="mailto:dom@w3.org"/>
<link rel="help" href="http://dev.w3.org/2011/webrtc/editor/getusermedia.html#widl-NavigatorUserMedia-getUserMedia-void-MediaStreamConstraints-constraints-NavigatorUserMediaSuccessCallback-successCallback-NavigatorUserMediaErrorCallback-errorCallback">
</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 setting a trivial mandatory
constraint (width >=0) in getUserMedia works</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();
try {
const stream = await navigator.mediaDevices.getUserMedia({video: {width: {min:0}}})
assert_equals(stream.getVideoTracks().length, 1, "the media stream has exactly one video track");
} catch (error) {
assert_unreached("a Video stream of minimally zero width can always be created");
}
}, "Tests that setting a trivial mandatory constraint in getUserMedia works");
</script>
</body>
</html>
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