media-source/mediasource-play.html

<!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 test case.</title>
        <meta name="timeout" content="long">
        <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.addEventListener('error', test.unreached_func("Unexpected event 'error'"));
              mediaElement.addEventListener('ended', test.step_func_done());

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

              assert_false(sourceBuffer.updating, "sourceBuffer.updating");

              sourceBuffer.appendBuffer(mediaData);

              assert_true(sourceBuffer.updating, "sourceBuffer.updating");

              test.waitForExpectedEvents(function()
              {
                  assert_false(sourceBuffer.updating, "sourceBuffer.updating");

                  // Truncate the buffered media to about 1 second duration.
                  sourceBuffer.remove(1, +Infinity);

                  assert_true(sourceBuffer.updating, "sourceBuffer.updating");
                  test.expectEvent(sourceBuffer, 'updatestart', 'sourceBuffer');
                  test.expectEvent(sourceBuffer, 'update', 'sourceBuffer');
                  test.expectEvent(sourceBuffer, 'updateend', 'sourceBuffer');
              });

              test.waitForExpectedEvents(function()
              {
                  assert_false(sourceBuffer.updating, "updating");
                  assert_greater_than(mediaSource.duration, 1, "duration");

                  // Complete truncation of duration to 1 second.
                  mediaSource.duration = 1;

                  test.expectEvent(mediaElement, "durationchange");
              });

              test.waitForExpectedEvents(function()
              {
                  mediaSource.endOfStream();
                  mediaElement.play();
              });
          }, "Test normal playback case with MediaSource API");
        </script>
    </body>
</html>