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diff --git a/dom/media/webaudio/test/test_stereoPannerNodePassThrough.html b/dom/media/webaudio/test/test_stereoPannerNodePassThrough.html
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+<!DOCTYPE HTML>
+<html>
+<head>
+ <title>Test StereoPanerNode with passthrough</title>
+ <script src="/tests/SimpleTest/SimpleTest.js"></script>
+ <script type="text/javascript" src="webaudio.js"></script>
+ <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+</head>
+<body>
+<pre id="test">
+<script class="testbody" type="text/javascript">
+
+var gTest = {
+ length: 2048,
+ numberOfChannels: 1,
+ createGraph(context) {
+ var source = context.createBufferSource();
+
+ var stereoPanner = context.createStereoPanner();
+
+ source.buffer = this.buffer;
+
+ source.connect(stereoPanner);
+
+ var stereoPannerWrapped = SpecialPowers.wrap(stereoPanner);
+ ok("passThrough" in stereoPannerWrapped, "StereoPannerNode should support the passThrough API");
+ stereoPannerWrapped.passThrough = true;
+
+ source.start(0);
+ return stereoPanner;
+ },
+ createExpectedBuffers(context) {
+ this.buffer = context.createBuffer(1, 2048, context.sampleRate);
+ for (var i = 0; i < 2048; ++i) {
+ this.buffer.getChannelData(0)[i] = Math.sin(440 * 2 * Math.PI * i / context.sampleRate);
+ }
+
+ return [this.buffer];
+ },
+};
+
+runTest();
+
+</script>
+</pre>
+</body>
+</html>