<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <title>Test passing constraints to getUserMedia</title>
    <script src="../../resources/testharness.js"></script>
    <script src="../../resources/testharnessreport.js"></script>
</head>
<body>
    <video autoplay playsinline id="localVideo"></video>
    <script>
    if (window.testRunner)
        testRunner.setUserMediaPermission(true);

    promise_test(async (test) => {
        localVideo.srcObject = await navigator.mediaDevices.getUserMedia({video: {width: {exact: 300}}});
        await localVideo.play();

        assert_equals(localVideo.videoWidth, 300);
    }, "Ideal deviceId constraints");

    </script>
</body>
</html>