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diff --git a/testing/web-platform/tests/mediacapture-streams/GUM-optional-constraint.https.html b/testing/web-platform/tests/mediacapture-streams/GUM-optional-constraint.https.html
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index 000000000..7e69ca03f
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+++ b/testing/web-platform/tests/mediacapture-streams/GUM-optional-constraint.https.html
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+<!doctype html>
+<html>
+<head>
+<title>Optional constraint recognized as optional 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 an optional constraint in
+getUserMedia is handled as optional</p>
+
+<div id='log'></div>
+<script src=/resources/testharness.js></script>
+<script src=/resources/testharnessreport.js></script>
+<script src="/common/vendor-prefix.js" data-prefixed-objects='[{"ancestors":["navigator"], "name":"getUserMedia"}]'></script>
+<script>
+var t = async_test("Tests that setting an optional constraint in getUserMedia is handled as optional", {timeout:10000});
+t.step(function() {
+  navigator.getUserMedia({video: {advanced: [{width: {min:1024, max: 800}}]}},
+      t.step_func(function (stream) {
+        assert_equals(stream.getVideoTracks().length, 1, "the media stream has exactly one video track");
+        t.done();
+      }),
+      t.step_func(function(error) {
+        assert_unreached("an optional constraint can't stop us from obtaining a video stream");
+      }));
+});
+</script>
+</body>
+</html>