media-source/mediasource-detach.html

<!DOCTYPE html>
<!-- Copyright © 2016 Chromium authors and World Wide Web Consortium, (Massachusetts Institute of Technology, ERCIM, Keio University, Beihang). -->
<meta charset="utf-8">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="mediasource-util.js"></script>
<script>
    function mediasource_detach_test(testFunction, description)
    {
        mediasource_test(function(test, mediaElement, mediaSource)
        {
            var segmentInfo = MediaSourceUtil.SEGMENT_INFO;
            var sourceBuffer = mediaSource.addSourceBuffer(segmentInfo.type);

            assert_equals(mediaElement.readyState, HTMLMediaElement.HAVE_NOTHING);
            assert_equals(mediaSource.readyState, 'open');

            mediaSource.addEventListener('sourceclose', test.step_func(function (event)
            {
                assert_equals(mediaSource.sourceBuffers.length, 0, 'sourceBuffers is empty');
                assert_equals(mediaSource.activeSourceBuffers.length, 0, 'activeSourceBuffers is empty');
                assert_equals(mediaSource.readyState, 'closed', 'readyState is "closed"');
                assert_true(Number.isNaN(mediaSource.duration), 'duration is NaN');
                test.done();
            }));

            MediaSourceUtil.loadBinaryData(test, segmentInfo.url, function(mediaData)
            {
                testFunction(test, mediaElement, mediaSource, sourceBuffer, mediaData);
            });
        }, description);
    }

    mediasource_detach_test(function(test, mediaElement, mediaSource, sourceBuffer, mediaData)
    {
        mediaElement.load();
    }, 'Test media.load() before appending data will trigger MediaSource detaching from a media element.');

    mediasource_detach_test(function(test, mediaElement, mediaSource, sourceBuffer, mediaData)
    {
        test.expectEvent(sourceBuffer, 'updateend', 'updateend after appending data');
        test.expectEvent(mediaElement, 'loadedmetadata', 'media element loadedmetata');
        test.waitForExpectedEvents(() =>
        {
            assert_greater_than(mediaElement.readyState, HTMLMediaElement.HAVE_NOTHING,
                                'media element readyState is greater than "HAVE_NOTHING"');
            assert_false(sourceBuffer.updating, 'updating attribute is false');
            assert_equals(mediaSource.readyState, 'open');
            mediaElement.load();
        });

        sourceBuffer.appendBuffer(mediaData);
    }, 'Test media.load() after appending data will trigger MediaSource detaching from a media element.');
</script>