mediasource-play-then-seek-back.html

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This WPT test may be referenced by the following Test IDs:
- /media-source/mediasource-play-then-seek-back.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<!-- Copyright © 2016 Chromium authors and World Wide Web Consortium, (Massachusetts Institute of Technology, ERCIM, Keio University, Beihang). -->

<html>

    <head>

        <title>Simple MediaSource playback &amp; seek test case.</title>

        <script src="/resources/testharness.js"></script>

        <script src="/resources/testharnessreport.js"></script>

        <script src="mediasource-util.js"></script>

    </head>

    <body>

        <div id="log"></div>

        <script>

            mediasource_testafterdataloaded(function(test, mediaElement, mediaSource, segmentInfo, sourceBuffer, mediaData)

                mediaElement.play();

                // Append all the segments

                test.expectEvent(sourceBuffer, 'updateend', 'sourceBuffer');

                test.expectEvent(mediaElement, 'playing', 'Playing triggered');

                sourceBuffer.appendBuffer(mediaData);

                function confirmPlayThenEnd()

                    test.waitForCurrentTimeChange(mediaElement, function ()

                        assert_greater_than(mediaElement.currentTime, 0.0, 'Playback has started after seek.');

                        test.done();

});

                function finishSeekThenPlay()

                    test.expectEvent(mediaElement, 'seeked', 'mediaElement finished seek');

                    test.waitForExpectedEvents(confirmPlayThenEnd);

                function delayedPlayHandler()

                    assert_greater_than(mediaElement.currentTime, 0.0, 'Playback has started.');

                    test.expectEvent(mediaElement, 'seeking', 'mediaElement');

                    mediaElement.currentTime = 0.0;

                    assert_true(mediaElement.seeking, 'mediaElement is seeking');

                    test.waitForExpectedEvents(finishSeekThenPlay);

                test.waitForExpectedEvents(function()

                    test.waitForCurrentTimeChange(mediaElement, delayedPlayHandler);

});

            }, 'Test playing then seeking back.');

        </script>

    </body>

</html>