<head>
    <style>
        iframe {
            width: 320px;
            height: 240px;
        }
    </style>
    <script src="media-file.js"></script>
    <script src="video-test.js"></script>
    <script>
    if (window.testRunner) {
        testRunner.waitUntilDone();
        testRunner.dumpAsText();
    }

    async function checkAutoPlay(state, allowed)
    {
        let message = allowed ? "AudioContext auto-played" : "AudioContext did not auto-play";
        if (allowed === (event.data === "running"))
            consoleWrite(`PASS: ${allowed ? "Video auto-played" : "Video did not auto-play"}`);
        else
            consoleWrite(`FAIL: ${allowed ? "Video did not auto-play" : "Video auto-played"}`);
    }

    async function loadVideo(policy, allow)
    {
        consoleWrite(`<br>*** Test with auto-play policy set to '${policy}'`);
        
        if (window.internals)
            internals.setDocumentAutoplayPolicy(document, policy)

        iframe.src = 'about:blank';
        await waitForEventWithTimeout(iframe, 'load', 4000, '"about:blank" iframe failed to load!');

        let script = iframe.contentDocument.head.appendChild(iframe.contentDocument.createElement('script'));
        let code = `
            let context = new AudioContext();
            let node = context.createBufferSource();
            node.connect(context.destination);
            node.start();
            setTimeout(() => {
                window.parent.postMessage(context.state, '*');
            }, 250)`;
        script.appendChild(iframe.contentDocument.createTextNode(code));

        let event = await waitForEventWithTimeout(window, 'message', 4000, 'iframe failed to send message!');
        await checkAutoPlay(event.data, allow);
    }
    
    window.addEventListener('load', async () => {
        iframe = document.querySelector('iframe');

        await loadVideo('Allow', true);

        await loadVideo('AllowWithoutSound', false);

        await loadVideo('Deny', false);

        consoleWrite('');
        endTest();
    }, false);

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