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diff --git a/dom/media/test/test_playback_rate_playpause.html b/dom/media/test/test_playback_rate_playpause.html
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+<!DOCTYPE HTML>
+<html>
+<head>
+ <title>Test that the playbackRate property is not reset when resuming the playback</title>
+ <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+ <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+ <script type="text/javascript" src="manifest.js"></script>
+</head>
+<body>
+<pre id="test">
+<script class="testbody" type='application/javascript;version=1.8'>
+
+let manager = new MediaTestManager;
+
+function ontimeupdate(e) {
+ var t = e.target;
+ if (t.currentTime != 0.0) {
+ dump(t.token + " t.currentTime != 0.0.\n");
+ t.removeEventListener("timeupdate", ontimeupdate);
+ t.pause();
+ is(t.playbackRate, 0.5, "PlaybackRate should not have changed after pause.");
+ } else {
+ dump(t.token + " t.currentTime == 0.0.\n");
+ }
+}
+
+function onpaused(e) {
+ var t = e.target;
+ dump(t.token + " onpaused.\n");
+ t.play();
+ is(t.playbackRate, 0.5, "PlaybackRate should not have changed after resuming playback.");
+ finish_test(t);
+}
+
+function finish_test(element) {
+ dump(element.token + " finish_test.\n");
+ removeNodeAndSource(element);
+ manager.finished(element.token);
+}
+
+function startTest(test, token) {
+ let elemType = /^audio/.test(test.type) ? "audio" : "video";
+ let element = document.createElement(elemType);
+ element.src = test.name;
+ element.token = token;
+ element.controls = true;
+ element.playbackRate = 0.5;
+ element.preload = "metadata";
+ element.addEventListener("timeupdate", ontimeupdate);
+ element.addEventListener("pause", onpaused);
+ element.addEventListener("loadedmetadata", function() {
+ dump(element.token + " loadedmetadata\n");
+ element.play();
+ });
+ document.body.appendChild(element);
+ manager.started(token);
+}
+
+manager.runTests(gPlayedTests, startTest);
+
+</script>
+</pre>
+<div id="elements">
+</div>
+</body>
+</html>