LayoutTests/fast/mediastream/overconstrainederror-constraint.html - WebKit - Git at Google

 <!doctype html>
 <html>
     <head>
         <meta charset="utf-8">
         <title>OverConstrainedError.constraint testing</title>
         <script src="../../resources/testharness.js"></script>
         <script src="../../resources/testharnessreport.js"></script>
     </head>
     <body>

         <script>
 if (window.testRunner)
     testRunner.setUserMediaPermission(true);
 if (window.internals)
     window.internals.setMockMediaCaptureDevicesEnabled(true);

 promise_test(async () => {
     return navigator.mediaDevices.getUserMedia({audio: {deviceId: {exact:"none"}}}).then(
         () => assert_not_reached("gum should fail"),
         (e) => {
             assert_true(e instanceof OverconstrainedError);
             assert_equals(e.constraint, "", "constraint should be the empty string");
         }
     );
 }, "Before grant");

 promise_test(async(test) => {
     await navigator.mediaDevices.getUserMedia({audio: true});
     return navigator.mediaDevices.getUserMedia({audio: {deviceId: {exact:"none"}}}).then(
         () => assert_not_reached("gum should fail"),
         (e) => {
             assert_true(e instanceof OverconstrainedError);
             assert_equals(e.constraint, "deviceId", "constraint should be deviceId");
         }
     );
 }, "After grant");
         </script>
     </body>
 </html>
	<!doctype html>
	<html>
	<head>
	<meta charset="utf-8">
	<title>OverConstrainedError.constraint testing</title>
	<script src="../../resources/testharness.js"></script>
	<script src="../../resources/testharnessreport.js"></script>
	</head>
	<body>

	<script>
	if (window.testRunner)
	testRunner.setUserMediaPermission(true);
	if (window.internals)
	window.internals.setMockMediaCaptureDevicesEnabled(true);

	promise_test(async () => {
	return navigator.mediaDevices.getUserMedia({audio: {deviceId: {exact:"none"}}}).then(
	() => assert_not_reached("gum should fail"),
	(e) => {
	assert_true(e instanceof OverconstrainedError);
	assert_equals(e.constraint, "", "constraint should be the empty string");
	}
	);
	}, "Before grant");

	promise_test(async(test) => {
	await navigator.mediaDevices.getUserMedia({audio: true});
	return navigator.mediaDevices.getUserMedia({audio: {deviceId: {exact:"none"}}}).then(
	() => assert_not_reached("gum should fail"),
	(e) => {
	assert_true(e instanceof OverconstrainedError);
	assert_equals(e.constraint, "deviceId", "constraint should be deviceId");
	}
	);
	}, "After grant");
	</script>
	</body>
	</html>