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<!-- Copyright © 2016 Chromium authors and World Wide Web Consortium, (Massachusetts Institute of Technology, ERCIM, Keio University, Beihang). -->
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    <head>
        <meta  charset="utf-8">
        <title>SourceBuffer.remove() test cases.</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_test(function(test, mediaElement, mediaSource)
          {
              var sourceBuffer = mediaSource.addSourceBuffer(MediaSourceUtil.AUDIO_VIDEO_TYPE);

              mediaSource.duration = 10;

              assert_throws_js(TypeError, function()
              {
                  sourceBuffer.remove(-1, 2);
              }, "remove");

              test.done();
          }, "Test remove with an negative start.");

          mediasource_test(function(test, mediaElement, mediaSource)
          {
              var sourceBuffer = mediaSource.addSourceBuffer(MediaSourceUtil.AUDIO_VIDEO_TYPE);

              mediaSource.duration = 10;

              [ undefined, NaN, Infinity, -Infinity ].forEach(function(item)
              {
                  assert_throws_js(TypeError, function()
                  {
                      sourceBuffer.remove(item, 2);
                  }, "remove");
              });

              test.done();
          }, "Test remove with non-finite start.");

          mediasource_test(function(test, mediaElement, mediaSource)
          {
              var sourceBuffer = mediaSource.addSourceBuffer(MediaSourceUtil.AUDIO_VIDEO_TYPE);

              mediaSource.duration = 10;

              assert_throws_js(TypeError, function()
              {
                  sourceBuffer.remove(11, 12);
              }, "remove");

              test.done();
          }, "Test remove with a start beyond the duration.");

          mediasource_test(function(test, mediaElement, mediaSource)
          {
              var sourceBuffer = mediaSource.addSourceBuffer(MediaSourceUtil.AUDIO_VIDEO_TYPE);

              mediaSource.duration = 10;

              assert_throws_js(TypeError, function()
              {
                  sourceBuffer.remove(2, 1);
              }, "remove");

              test.done();
          }, "Test remove with a start larger than the end.");

          mediasource_test(function(test, mediaElement, mediaSource)
          {
              var sourceBuffer = mediaSource.addSourceBuffer(MediaSourceUtil.AUDIO_VIDEO_TYPE);

              mediaSource.duration = 10;

              assert_throws_js(TypeError, function()
              {
                  sourceBuffer.remove(0, Number.NEGATIVE_INFINITY);
              }, "remove");

              test.done();
          }, "Test remove with a NEGATIVE_INFINITY end.");

          mediasource_test(function(test, mediaElement, mediaSource)
          {
              var sourceBuffer = mediaSource.addSourceBuffer(MediaSourceUtil.AUDIO_VIDEO_TYPE);

              mediaSource.duration = 10;

              assert_throws_js(TypeError, function()
              {
                  sourceBuffer.remove(0, Number.NaN);
              }, "remove");

              test.done();
          }, "Test remove with a NaN end.");

          mediasource_test(function(test, mediaElement, mediaSource)
          {
              var sourceBuffer = mediaSource.addSourceBuffer(MediaSourceUtil.AUDIO_VIDEO_TYPE);

              mediaSource.duration = 10;

              mediaSource.removeSourceBuffer(sourceBuffer);

              assert_throws_dom("InvalidStateError", function()
              {
                  sourceBuffer.remove(1, 2);
              }, "remove");

              test.done();
          }, "Test remove after SourceBuffer removed from mediaSource.");

          mediasource_test(function(test, mediaElement, mediaSource)
          {
              var sourceBuffer = mediaSource.addSourceBuffer(MediaSourceUtil.AUDIO_VIDEO_TYPE);

              assert_false(sourceBuffer.updating, "updating is false");
              assert_equals(mediaSource.duration, NaN, "duration isn't set");

              assert_throws_js(TypeError, function()
              {
                  sourceBuffer.remove(0, 0);
              }, "remove");

              test.done();
          }, "Test remove with a NaN duration.");

          mediasource_test(function(test, mediaElement, mediaSource)
          {
              var sourceBuffer = mediaSource.addSourceBuffer(MediaSourceUtil.AUDIO_VIDEO_TYPE);

              mediaSource.duration = 10;

              test.expectEvent(sourceBuffer, "updatestart");
              test.expectEvent(sourceBuffer, "update");
              test.expectEvent(sourceBuffer, "updateend");
              sourceBuffer.remove(1, 2);

              assert_true(sourceBuffer.updating, "updating");

              assert_throws_dom("InvalidStateError", function()
              {
                  sourceBuffer.remove(3, 4);
              }, "remove");

              test.waitForExpectedEvents(function()
              {
                  test.done();
              });
          }, "Test remove while update pending.");

          mediasource_test(function(test, mediaElement, mediaSource)
          {
              var sourceBuffer = mediaSource.addSourceBuffer(MediaSourceUtil.AUDIO_VIDEO_TYPE);

              mediaSource.duration = 10;

              test.expectEvent(sourceBuffer, "updatestart");
              test.expectEvent(sourceBuffer, "update");
              test.expectEvent(sourceBuffer, "updateend");
              sourceBuffer.remove(1, 2);

              assert_true(sourceBuffer.updating, "updating");

              assert_throws_dom("InvalidStateError", function()
              {
                  sourceBuffer.abort();
              }, "abort");

              assert_true(sourceBuffer.updating, "updating");

              test.waitForExpectedEvents(function()
              {
                  test.done();
              });
          }, "Test aborting a remove operation.");

          mediasource_testafterdataloaded(function(test, mediaElement, mediaSource, segmentInfo, sourceBuffer, mediaData)
          {
              sourceBuffer.appendBuffer(mediaData);

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

              test.waitForExpectedEvents(function()
              {
                  assert_less_than(mediaSource.duration, 10)

                  mediaSource.duration = 10;

                  sourceBuffer.remove(mediaSource.duration, mediaSource.duration + 2);

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

              test.waitForExpectedEvents(function()
              {
                  test.done();
              });

          }, "Test remove with a start at the duration.");

          mediasource_testafterdataloaded(function(test, mediaElement, mediaSource, segmentInfo, sourceBuffer, mediaData)
          {
              test.expectEvent(sourceBuffer, "updatestart");
              test.expectEvent(sourceBuffer, "update");
              test.expectEvent(sourceBuffer, "updateend");
              sourceBuffer.appendBuffer(mediaData);

              test.waitForExpectedEvents(function()
              {
                  mediaSource.endOfStream();

                  assert_equals(mediaSource.readyState, "ended");

                  test.expectEvent(sourceBuffer, "updatestart");
                  test.expectEvent(sourceBuffer, "update");
                  test.expectEvent(sourceBuffer, "updateend");
                  test.expectEvent(mediaSource, "sourceopen");
                  sourceBuffer.remove(1, 2);

                  assert_true(sourceBuffer.updating, "updating");
                  assert_equals(mediaSource.readyState, "open");
              });

              test.waitForExpectedEvents(function()
              {
                  assert_false(sourceBuffer.updating, "updating");
                  test.done();
              });
          }, "Test remove transitioning readyState from 'ended' to 'open'.");

          function removeAppendedDataTests(callback, description)
          {
              mediasource_testafterdataloaded(function(test, mediaElement, mediaSource, segmentInfo, sourceBuffer, mediaData)
              {
                  test.expectEvent(sourceBuffer, "updatestart");
                  test.expectEvent(sourceBuffer, "update");
                  test.expectEvent(sourceBuffer, "updateend");
                  sourceBuffer.appendBuffer(mediaData);

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

                      var start = Math.max(segmentInfo.media[0].timev, segmentInfo.media[0].timea).toFixed(3);
                      var duration = mediaElement.duration.toFixed(3);
                      var subType = MediaSourceUtil.getSubType(segmentInfo.type);

                      assertBufferedEquals(sourceBuffer, "{ [" + start + ", " + duration + ") }", "Initial buffered range.");
                      callback(test, mediaSource, sourceBuffer, duration, subType, segmentInfo);
                  });
              }, description);
          };
          function removeAndCheckBufferedRanges(test, mediaSource, sourceBuffer, start, end, expected)
          {
              test.expectEvent(sourceBuffer, "updatestart");
              test.expectEvent(sourceBuffer, "update");
              test.expectEvent(sourceBuffer, "updateend");
              sourceBuffer.remove(start, end);

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

                  assertBufferedEquals(sourceBuffer, expected, "Buffered ranges after remove().");
                  test.done();
              });
          }

          removeAppendedDataTests(function(test, mediaSource, sourceBuffer, duration, subType, segmentInfo)
          {
              removeAndCheckBufferedRanges(test, mediaSource, sourceBuffer, 0, Number.POSITIVE_INFINITY, "{ }");
          }, "Test removing all appended data.");

          removeAppendedDataTests(function(test, mediaSource, sourceBuffer, duration, subType, segmentInfo)
          {
              var expectations = {
                webm: ("{ [3.315, " + duration + ") }"),
                mp4: ("{ [3.298, " + duration + ") }"),
              };

              // Note: Range doesn't start exactly at the end of the remove range because there isn't
              // a keyframe there. The resulting range starts at the first keyframe >= the end time.
              removeAndCheckBufferedRanges(test, mediaSource, sourceBuffer, 0, 3, expectations[subType]);
          }, "Test removing beginning of appended data.");

          removeAppendedDataTests(function(test, mediaSource, sourceBuffer, duration, subType, segmentInfo)
          {
              var start = Math.max(segmentInfo.media[0].timev, segmentInfo.media[0].timea).toFixed(3);
              var expectations = {
                webm: ("{ [" + start + ", 1.005) [3.315, " + duration + ") }"),
                mp4: ("{ [" + start + ", 0.997) [3.298, " + duration + ") }"),
              };

              // Note: The first resulting range ends slightly after start because the removal algorithm only removes
              // frames with a timestamp >= the start time. If a frame starts before and ends after the remove() start
              // timestamp, then it stays in the buffer.
              removeAndCheckBufferedRanges(test, mediaSource, sourceBuffer, 1, 3, expectations[subType]);
          }, "Test removing the middle of appended data.");

          removeAppendedDataTests(function(test, mediaSource, sourceBuffer, duration, subType, segmentInfo)
          {
              var start = Math.max(segmentInfo.media[0].timev, segmentInfo.media[0].timea).toFixed(3);
              var expectations = {
                webm: "{ [" + start + ", 1.013) }",
                mp4: "{ [" + start + ", 1.022) }",
              };

              removeAndCheckBufferedRanges(test, mediaSource, sourceBuffer, 1, Number.POSITIVE_INFINITY, expectations[subType]);
          }, "Test removing the end of appended data.");
        </script>
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