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diff --git a/dom/media/webaudio/test/test_pannerNodeChannelCount.html b/dom/media/webaudio/test/test_pannerNodeChannelCount.html
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+<!DOCTYPE HTML>
+<html>
+<head>
+ <title>Test PannerNode directly above</title>
+ <script src="/tests/SimpleTest/SimpleTest.js"></script>
+ <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
+</head>
+<body>
+<pre id="test">
+<script src="webaudio.js" type="text/javascript"></script>
+<script class="testbody" type="text/javascript">
+
+var gTest = {
+ length: 2048,
+ numberOfChannels: 2,
+ createGraph(context) {
+ var buffer = context.createBuffer(2, 2048, context.sampleRate);
+ for (var i = 0; i < 2048; ++i) {
+ var sample = Math.sin(440 * 2 * Math.PI * i / context.sampleRate);
+ // When mixed into a single channel, this produces silence
+ buffer.getChannelData(0)[i] = sample;
+ buffer.getChannelData(1)[i] = -sample;
+ }
+
+ var panner = context.createPanner();
+ panner.positionX.value = 1;
+ panner.positionY.value = 2;
+ panner.positionZ.value = 3;
+ panner.channelCount = 1;
+ expectException(function() { panner.channelCount = 3; },
+ DOMException.NOT_SUPPORTED_ERR);
+ panner.channelCountMode = "explicit";
+ expectException(function() { panner.channelCountMode = "max"; },
+ DOMException.NOT_SUPPORTED_ERR);
+ panner.channelInterpretation = "discrete";
+ panner.channelInterpretation = "speakers";
+
+ var source = context.createBufferSource();
+ source.buffer = buffer;
+ source.connect(panner);
+ source.start(0);
+
+ return panner;
+ },
+};
+
+runTest();
+
+</script>
+</pre>
+</body>
+</html>