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+<!DOCTYPE HTML>
+<html>
+<head>
+ <title>Test whether we can create an AudioContext interface</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">
+
+SimpleTest.waitForExplicitFinish();
+addLoadEvent(function() {
+ var context = new AudioContext();
+ var buffer = context.createBuffer(1, 2048, context.sampleRate);
+ for (var i = 0; i < 2048; ++i) {
+ buffer.getChannelData(0)[i] = Math.sin(440 * 2 * Math.PI * i / context.sampleRate);
+ }
+
+ var destination = context.destination;
+ is(destination.context, context, "Destination node has proper context");
+ is(destination.context, context, "Destination node has proper context");
+ is(destination.numberOfInputs, 1, "Destination node has 1 inputs");
+ is(destination.numberOfOutputs, 0, "Destination node has 0 outputs");
+ is(destination.channelCount, 2, "Destination node has 2 input channels by default");
+ is(destination.channelCountMode, "explicit", "Correct channelCountMode for the destination node");
+ is(destination.channelInterpretation, "speakers", "Correct channelCountInterpretation for the destination node");
+ ok(destination instanceof EventTarget, "AudioNodes must be EventTargets");
+
+ var source = context.createBufferSource();
+ is(source.context, context, "Source node has proper context");
+ is(source.numberOfInputs, 0, "Source node has 0 inputs");
+ is(source.numberOfOutputs, 1, "Source node has 1 outputs");
+ is(source.loop, false, "Source node is not looping");
+ is(source.loopStart, 0, "Correct default value for loopStart");
+ is(source.loopEnd, 0, "Correct default value for loopEnd");
+ ok(!source.buffer, "Source node should not have a buffer when it's created");
+ is(source.channelCount, 2, "source node has 2 input channels by default");
+ is(source.channelCountMode, "max", "Correct channelCountMode for the source node");
+ is(source.channelInterpretation, "speakers", "Correct channelCountInterpretation for the source node");
+
+ expectException(function() {
+ source.channelCount = 0;
+ }, DOMException.NOT_SUPPORTED_ERR);
+
+ source.buffer = buffer;
+ ok(source.buffer, "Source node should have a buffer now");
+
+ source.connect(destination);
+
+ is(source.numberOfInputs, 0, "Source node has 0 inputs");
+ is(source.numberOfOutputs, 1, "Source node has 0 outputs");
+ is(destination.numberOfInputs, 1, "Destination node has 0 inputs");
+ is(destination.numberOfOutputs, 0, "Destination node has 0 outputs");
+
+ source.start(0);
+ SimpleTest.executeSoon(function() {
+ source.stop(0);
+ source.disconnect();
+
+ SpecialPowers.clearUserPref("media.webaudio.enabled");
+ SimpleTest.finish();
+ });
+});
+
+</script>
+</pre>
+</body>
+</html>