<!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>
