<!doctype html>
<html>
<head>
<title>enumerateDevices is returning new MediaDeviceInfo objects every time</title>
<script src=/resources/testharness.js></script>
<script src=/resources/testharnessreport.js></script>
</head>
<body>
<script>
function doTest(callGetUserMedia, testName)
{
    promise_test(async () => {
        if (callGetUserMedia)
            await navigator.mediaDevices.getUserMedia({audio : true, video: true});

        const deviceList1 =  await navigator.mediaDevices.enumerateDevices();
        const deviceList2 =  await navigator.mediaDevices.enumerateDevices();

        assert_equals(deviceList1.length, deviceList2.length);
        for (let i = 0; i < deviceList1.length; i++) {
            const device1 = deviceList1[i];
            const device2 = deviceList2[i];
            assert_not_equals(device1, device2);
            assert_equals(device1.deviceId, device2.deviceId, "deviceId");
            assert_equals(device1.kind, device2.kind, "kind");
        }
    }, testName);
}

doTest(false, "enumerateDevices returns new objects in case device-info permission is not granted");
doTest(true, "enumerateDevices returns new objects in case device-info permission is granted");
</script>
</body>
</html>