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+<!DOCTYPE html>
+<html><head>
+<meta http-equiv="content-type" content="text/html; charset=windows-1252">
+  <title>MSE: |waiting| event when source data is missing</title>
+  <script src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="text/javascript" src="mediasource.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+</head>
+<body>
+<pre id="test"><script class="testbody" type="text/javascript">
+
+SimpleTest.waitForExplicitFinish();
+
+runWithMSE(async (ms, el) => {
+  el.controls = true;
+  await once(ms, "sourceopen");
+  ok(true, "Receive a sourceopen event");
+  el.addEventListener("ended", () => {
+    ok(false, "ended should never fire");
+    SimpleTest.finish();
+  });
+  const videosb = ms.addSourceBuffer("video/mp4");
+  await fetchAndLoad(videosb, "bipbop/bipbop_video", ["init"], ".mp4");
+  await fetchAndLoad(videosb, "bipbop/bipbop_video", range(1, 5), ".m4s");
+  await fetchAndLoad(videosb, "bipbop/bipbop_video", range(6, 8), ".m4s");
+  is(el.buffered.length, 2, "discontinuous buffered range");
+  ms.endOfStream();
+  await Promise.all([once(el, "durationchange"), once(ms, "sourceended")]);
+  // HTMLMediaElement fires "waiting" if somebody invokes |play()| before the MDSM
+  // has notified it of available data. Make sure that we get "playing" before
+  // we starting waiting for "waiting".
+  info("Invoking play()");
+  el.play();
+  await once(el, "playing");
+  ok(true, "Video playing. It should play for a bit, then fire 'waiting'");
+  await once(el, "waiting");
+  // waiting is fired when we start to play the last frame.
+  // 0.033334 is the duration of the last frame, + 0.000001 of fuzz.
+  // the next video frame, currentTime can be up to 1 frame's worth earlier than end of video.
+  isfuzzy(el.currentTime, videosb.buffered.end(0), 0.033334, "waiting was fired on gap");
+  SimpleTest.finish();
+});
+
+</script>
+</pre>
+</body>
+</html>