<!doctype html>
<html>
    <head>
        <meta charset="utf-8">
        <title>iOS specific constraints of one active capture source at a time</title>
        <script src="../../resources/testharness.js"></script>
        <script src="../../resources/testharnessreport.js"></script>
        <script>
        let deviceCount = 0;
        function checkDevices(devices, havePermission)
        {
            assert_not_equals(devices.length, 0, "captureDevices.length != 0");
            devices.forEach(function(device) {
                assert_not_equals(device.kind, null, "device.kind is non-null");
                assert_not_equals(device.deviceId, null, "device.deviceId is non-null");
                assert_not_equals(device.label, null, "device.label is non-null");
                if (havePermission)
                    assert_not_equals(device.label, "", "device.label is not empty");
                else
                    assert_equals(device.label, "", "device.label is empty");

                assert_not_equals(device.kind, null, "device.groupId is non-null");
            });
        }
        
        promise_test((test) => {
            if (window.testRunner)
                testRunner.setUserMediaPermission(true);

            new window.AudioContext().createMediaStreamDestination();
            return navigator.mediaDevices.enumerateDevices()
                .then((devices) => {
                    deviceCount = devices.length;
                    checkDevices(devices, false);
                })
        }, "Enumerate devices without permission");

        promise_test((test) => {

            if (window.testRunner)
                testRunner.setUserMediaPersistentPermissionForOrigin(true, document.location.href, "");

            return navigator.mediaDevices.enumerateDevices()
                .then((devices) => {
                    assert_not_equals(deviceCount, devices.length, "more devices revealed with persistent access");
                    deviceCount = devices.length;
                    checkDevices(devices, true);
                })
        }, "Enumerate devices with persistent access");

        promise_test((test) => {

            if (window.testRunner)
                testRunner.setUserMediaPersistentPermissionForOrigin(false, document.location.href, "");

            return navigator.mediaDevices.getUserMedia({audio:{}, video:{}})
                .then((stream) => {
                    return navigator.mediaDevices.enumerateDevices()
                        .then((devices) => {
                            assert_equals(deviceCount, devices.length, "same devices revealed when authenticated as with persistent access");
                            checkDevices(devices, true);
                        })
                })
        }, "Enumerate devices after authentication, without persistent access");

        </script>
    </head>
    <body>
</body>
