mediasource-detach.html

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This test has a WPT meta file that expects 2 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /media-source/mediasource-detach.html - WPT Dashboard Interop Dashboard

<!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>