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+++ b/testing/web-platform/tests/media-source/mediasource-closed.html
@@ -0,0 +1,140 @@
+<!DOCTYPE html>
+<!-- Copyright © 2016 Chromium authors and World Wide Web Consortium, (Massachusetts Institute of Technology, ERCIM, Keio University, Beihang). -->
+<html>
+    <head>
+        <title>MediaSource.readyState equals "closed" 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>
+          test(function ()
+          {
+              var mediaSource = new MediaSource();
+              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(isNaN(mediaSource.duration), "duration is NaN");
+          }, "Test attribute values on a closed MediaSource object.");
+
+          test(function ()
+          {
+              var mediaSource = new MediaSource();
+              assert_throws("InvalidStateError",
+                  function() { mediaSource.addSourceBuffer(MediaSourceUtil.VIDEO_ONLY_TYPE); },
+                  "addSourceBuffer() throws an exception when closed.");
+          }, "Test addSourceBuffer() while closed.");
+
+          mediasource_test(function(test, mediaElement, mediaSource)
+          {
+              var sourceBuffer = mediaSource.addSourceBuffer(MediaSourceUtil.AUDIO_ONLY_TYPE);
+
+              // Setup a handler to run when the MediaSource closes.
+              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_throws("NotFoundError",
+                      function() { mediaSource.removeSourceBuffer(sourceBuffer); },
+                      "removeSourceBuffer() throws an exception when closed.");
+                  test.done();
+              }));
+
+              // Trigger the MediaSource to close.
+              mediaElement.src = "";
+          }, "Test removeSourceBuffer() while closed.");
+
+          test(function ()
+          {
+              var mediaSource = new MediaSource();
+              assert_throws("InvalidStateError",
+                  function() { mediaSource.endOfStream(); },
+                  "endOfStream() throws an exception when closed.");
+          }, "Test endOfStream() while closed.");
+
+          test(function ()
+          {
+              var mediaSource = new MediaSource();
+              assert_throws("InvalidStateError",
+                  function() { mediaSource.endOfStream("decode"); },
+                  "endOfStream(decode) throws an exception when closed.");
+          }, "Test endOfStream(decode) while closed.");
+
+          test(function ()
+          {
+              var mediaSource = new MediaSource();
+              assert_throws("InvalidStateError",
+                  function() { mediaSource.endOfStream("network"); },
+                  "endOfStream(network) throws an exception when closed.");
+          }, "Test endOfStream(network) while closed.");
+
+          test(function ()
+          {
+              var mediaSource = new MediaSource();
+              assert_throws("InvalidStateError",
+                  function() { mediaSource.duration = 10; },
+                  "Setting duration throws an exception when closed.");
+          }, "Test setting duration while closed.");
+
+          mediasource_test(function(test, mediaElement, mediaSource)
+          {
+              var sourceBuffer = mediaSource.addSourceBuffer(MediaSourceUtil.AUDIO_ONLY_TYPE);
+
+              assert_equals(mediaSource.readyState, "open", "readyState is 'open'");
+              // Setup a handler to run when the MediaSource closes.
+              mediaSource.addEventListener("sourceclose", test.step_func(function (event)
+              {
+                  assert_equals(mediaSource.readyState, "closed", "readyState is 'closed'");
+                  assert_throws("InvalidStateError",
+                      function() { mediaSource.duration = 10; },
+                      "Setting duration when closed throws an exception");
+                  test.done();
+              }));
+
+              // Trigger the MediaSource to close.
+              mediaElement.src = "";
+          }, "Test setting duration while open->closed.");
+
+           mediasource_test(function(test, mediaElement, mediaSource)
+          {
+              var sourceBuffer = mediaSource.addSourceBuffer(MediaSourceUtil.AUDIO_ONLY_TYPE);
+
+              assert_equals(mediaSource.readyState, "open", "readyState is 'open'");
+              // Setup a handler to run when the MediaSource closes.
+              mediaSource.addEventListener("sourceclose", test.step_func(function (event)
+              {
+                  assert_equals(mediaSource.readyState, "closed", "readyState is 'closed'");
+                  assert_true(isNaN(mediaSource.duration), "duration is NaN");
+                  test.done();
+              }));
+
+              // Trigger the MediaSource to close.
+              mediaElement.src = "";
+          }, "Test getting duration while open->closed.");
+
+          mediasource_test(function(test, mediaElement, mediaSource)
+          {
+              var sourceBuffer = mediaSource.addSourceBuffer(MediaSourceUtil.AUDIO_ONLY_TYPE);
+
+              assert_equals(mediaSource.readyState, "open", "readyState is open");
+
+              // Setup a handler to run when the MediaSource closes.
+              mediaSource.addEventListener("sourceclose", test.step_func(function (event)
+              {
+                  assert_equals(mediaSource.readyState, "closed", "readyState is closed");
+                  assert_throws("InvalidStateError",
+                    function() { sourceBuffer.abort(); },
+                    "sourceBuffer.abort() throws INVALID_STATE_ERROR");
+                  test.done();
+              }));
+
+              // Trigger the MediaSource to close.
+              mediaElement.src = "";
+          }, "Test sourcebuffer.abort when closed.");
+
+        </script>
+    </body>
+</html>