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+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=1150315
+-->
+<head>
+  <meta charset="utf-8">
+  <title>Test for Bug 1150315: Check that successive cancel/speak calls work</title>
+  <script type="application/javascript">
+    window.SimpleTest = parent.SimpleTest;
+    window.info = parent.info;
+    window.is = parent.is;
+    window.isnot = parent.isnot;
+    window.ok = parent.ok;
+  </script>
+  <script type="application/javascript" src="common.js"></script>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1150315">Mozilla Bug 1150315</a>
+<p id="display"></p>
+<div id="content" style="display: none">
+
+</div>
+<pre id="test">
+<script type="application/javascript">
+
+/** Test for Bug 1150315 **/
+
+function testFunc(done_cb) {
+  var gotEndEvent = false;
+  // A long utterance that we will interrupt.
+  var utterance = new SpeechSynthesisUtterance("Donec ac nunc feugiat, posuere " +
+    "mauris id, pharetra velit. Donec fermentum orci nunc, sit amet maximus" +
+    "dui tincidunt ut. Sed ultricies ac nisi a laoreet. Proin interdum," +
+    "libero maximus hendrerit posuere, lorem risus egestas nisl, a" +
+    "ultricies massa justo eu nisi. Duis mattis nibh a ligula tincidunt" +
+    "tincidunt non eu erat. Sed bibendum varius vulputate. Cras leo magna," +
+    "ornare ac posuere vel, luctus id metus. Mauris nec quam ac augue" +
+    "consectetur bibendum. Integer a commodo tortor. Duis semper dolor eu" +
+    "facilisis facilisis. Etiam venenatis turpis est, quis tincidunt velit" +
+    "suscipit a. Cras semper orci in sapien rhoncus bibendum. Suspendisse" +
+    "eu ex lobortis, finibus enim in, condimentum quam. Maecenas eget dui" +
+    "ipsum. Aliquam tortor leo, interdum eget congue ut, tempor id elit.");
+  utterance.addEventListener('start', function(e) {
+    ok(true, 'start utterance 1');
+    speechSynthesis.cancel();
+    info('cancel!');
+    speechSynthesis.speak(utterance2);
+    info('speak??');
+  });
+
+  var utterance2 = new SpeechSynthesisUtterance("Proin ornare neque vitae " +
+    "risus mattis rutrum. Suspendisse a velit ut est convallis aliquet." +
+    "Nullam ante elit, malesuada vel luctus rutrum, ultricies nec libero." +
+    "Praesent eu iaculis orci. Sed nisl diam, sodales ac purus et," +
+    "volutpat interdum tortor. Nullam aliquam porta elit et maximus. Cras" +
+    "risus lectus, elementum vel sodales vel, ultricies eget lectus." +
+    "Curabitur velit lacus, mollis vel finibus et, molestie sit amet" +
+    "sapien. Proin vitae dolor ac augue posuere efficitur ac scelerisque" +
+    "diam. Nulla sed odio elit.");
+  utterance2.addEventListener('start', function() {
+    info('start');
+    speechSynthesis.cancel();
+    speechSynthesis.speak(utterance3);
+  });
+  utterance2.addEventListener('end', function(e) {
+    gotEndEvent = true;
+  });
+
+  var utterance3 = new SpeechSynthesisUtterance("Hello, world 3!");
+  utterance3.addEventListener('start', function() {
+    ok(gotEndEvent, "didn't get start event for this utterance");
+  });
+  utterance3.addEventListener('end', done_cb);
+
+  // Speak/cancel while paused (Bug 1187105)
+  speechSynthesis.pause();
+  speechSynthesis.speak(new SpeechSynthesisUtterance("hello."));
+  ok(speechSynthesis.pending, "paused speechSynthesis has an utterance queued.");
+  speechSynthesis.cancel();
+  ok(!speechSynthesis.pending, "paused speechSynthesis has no utterance queued.");
+  speechSynthesis.resume();
+
+  speechSynthesis.speak(utterance);
+  ok(!speechSynthesis.speaking, "speechSynthesis is not speaking yet.");
+  ok(speechSynthesis.pending, "speechSynthesis has an utterance queued.");
+}
+
+// Run test with no global queue, and then run it with a global queue.
+testFunc(function() {
+  SpecialPowers.pushPrefEnv(
+    { set: [['media.webspeech.synth.force_global_queue', true]] }, function() {
+      testFunc(SimpleTest.finish)
+    });
+});
+
+</script>
+</pre>
+</body>
+</html>