<!DOCTYPE html>
<html>
<head>
    <script src="../video-test.js"></script>
    <script src="../media-file.js"></script>
    <script type="text/javascript">
        var session;
    
        function runTest() 
        {
            if (window.testRunner) {
                testRunner.dumpAsText();
                testRunner.waitUntilDone();
            }

            window.jsTestIsAsync = true;

            session = new MediaSession("content");

            consoleWrite("Waiting for Content media to begin playing.")
            var video = document.getElementById("video");
            waitForEvent('canplaythrough', beginPlaying);
            video.src = findMediaFile("video", "../content/counting");
            video.session = session;
            video.volume = 1;
            video.onplaying = beganPlaying;
        }
        
        function beginPlaying(event)
        {
            document.getElementById("video").play();
        }

        function beganPlaying(event)
        {
            consoleWrite("Media began playing.");

            if (window.internals) {
                testExpected('internals.mediaSessionCurrentState(session)', "active");
                testExpected('internals.mediaElementPlayerVolume(document.getElementById("video"))', 1);

                consoleWrite("Sending 'Transient' start-of-interruption notification.");
                run('internals.sendMediaSessionStartOfInterruptionNotification("transient")');

                testExpected('internals.mediaSessionCurrentState(session)', "interrupted");
                testExpected('internals.mediaElementPlayerVolume(document.getElementById("video"))', 0.25);

                consoleWrite("Sending 'Transient' end-of-interruption notification.");
                run('internals.sendMediaSessionEndOfInterruptionNotification("transient")');

                testExpected('internals.mediaSessionCurrentState(session)', "active");
                testExpected('internals.mediaElementPlayerVolume(document.getElementById("video"))', 1);
            }
            
            endTest();
        }
    </script>
</head>
<body onload="runTest()">
    <p>'Transient' interruption events should duck audio for 'Content' media sessions.</p>
    <video id="video" />
</body>
</html>