<!DOCTYPE html>
<html>
<head>
    <title>mock-media-source</title>
    <script src="mock-media-source.js"></script>
    <script src="../video-test.js"></script>
    <script>
    var source;
    var sourceBuffer;
    var initSegment;

    if (window.internals)
        internals.initializeMockMediaSource();

    function runTest()
    {
        findMediaElement();

        source = new MediaSource();
        testExpected('source.readyState', 'closed');

        waitForEventOn(source, 'sourceopen', sourceOpen);
        var videoSource = document.createElement('source');
        videoSource.type = 'video/mock; codecs=mock';
        videoSource.src = URL.createObjectURL(source);
        video.appendChild(videoSource);
    }
    
    function syncSampleRun(start, end) {
        const samples = [];
        for (let time = start; time < end; time++)
            samples.push(makeASample(time, time, 1, 1, 1, time === start ? SAMPLE_FLAG.SYNC : SAMPLE_FLAG.NONE));
        return concatenateSamples(samples);
    }

    function formatRanges(buffered) {
        function rangesToArray(ranges) {
            const ret = [];
            for (let i = 0; i < ranges.length; i++) {
                ret.push({start: ranges.start(i), end: ranges.end(i)});
            }
            return ret;
        }

        return rangesToArray(buffered)
            .map(range => `[${range.start}, ${range.end})`)
            .join(' ');
    }

    function sourceOpen()
    {
        run('sourceBuffer = source.addSourceBuffer("video/mock; codecs=mock")');
        waitForEventOn(sourceBuffer, 'updateend', loadSamples10_20, false, true);
        initSegment = makeAInit(8, [makeATrack(1, 'mock', TRACK_KIND.VIDEO)]);
        run('sourceBuffer.appendBuffer(initSegment)');
    }

    function loadSamples10_20()
    {
        testExpected('sourceBuffer.buffered.length', 0);

        waitForEventOn(sourceBuffer, 'updateend', loadSamples0_10, false, true);
        run('sourceBuffer.appendBuffer(syncSampleRun(10, 20))');
    }

    function loadSamples0_10() {
        testExpected('formatRanges(sourceBuffer.buffered)', '[10, 20)');

        waitForEventOn(sourceBuffer, 'updateend', loadSamples30_40, false, true);
        run('sourceBuffer.appendBuffer(syncSampleRun(0, 10))');
    }

    function loadSamples30_40() {
        testExpected('formatRanges(sourceBuffer.buffered)', '[0, 20)');

        waitForEventOn(sourceBuffer, 'updateend', loadSamples20_30, false, true);
        run('sourceBuffer.appendBuffer(syncSampleRun(30, 40))');
    }

    function loadSamples20_30() {
        testExpected('formatRanges(sourceBuffer.buffered)', '[0, 20) [30, 40)');

        waitForEventOn(sourceBuffer, 'updateend', loadedAllSamples, false, true);
        run('sourceBuffer.appendBuffer(syncSampleRun(20, 30))');
    }

    function loadedAllSamples()
    {
        testExpected('formatRanges(sourceBuffer.buffered)', '[0, 40)');
        endTest();
    }
    </script>
</head>
<body onload="runTest()">
    <video></video>
</body>
</html>