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<!DOCTYPE html>
<html>
<head>
<title>
Test MessagePort in AudioWorkletNode and AudioWorkletProcessor
</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/webaudio/resources/audit.js"></script>
</head>
<body>
<script id="layout-test-code">
let audit = Audit.createTaskRunner();
let context = new AudioContext();
let filePath = 'processors/port-processor.js';
// Creates an AudioWorkletNode and sets an EventHandler on MessagePort
// object. The associated PortProcessor will post a message upon its
// construction. Test if the message is received correctly.
audit.define(
'Test postMessage from AudioWorkletProcessor to AudioWorkletNode',
(task, should) => {
let porterWorkletNode =
new AudioWorkletNode(context, 'port-processor');
// Upon the creation of PortProcessor, it will post a message to the
// node with 'created' status.
porterWorkletNode.port.onmessage = (event) => {
should(event.data.state,
'The initial message from PortProcessor')
.beEqualTo('created');
task.done();
};
});
// PortProcessor is supposed to echo the message back to the
// AudioWorkletNode.
audit.define(
'Test postMessage from AudioWorkletNode to AudioWorkletProcessor',
(task, should) => {
let porterWorkletNode =
new AudioWorkletNode(context, 'port-processor');
porterWorkletNode.port.onmessage = (event) => {
// Ignore if the delivered message has |state|. This is already
// tested in the previous task.
if (event.data.state)
return;
should(event.data.message,
'The response from PortProcessor')
.beEqualTo('hello');
task.done();
};
porterWorkletNode.port.postMessage('hello');
});
context.audioWorklet.addModule(filePath).then(() => {
audit.run();
});
</script>
</body>
</html>
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