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<!DOCTYPE html>
<title>Test onprocessorerror handler in AudioWorkletNode</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
let context = null;
promise_setup(async () => {
const sampleRate = 48000;
const renderLength = sampleRate * 0.1;
context = new OfflineAudioContext(1, renderLength, sampleRate);
// Loads all processor definitions that are necessary for tests in this file.
await context.audioWorklet.addModule('./processors/error-processor.js');
});
promise_test(async () => {
const constructorErrorWorkletNode =
new AudioWorkletNode(context, 'constructor-error');
let error = await new Promise(resolve => {
constructorErrorWorkletNode.onprocessorerror = (e) => resolve(e);
});
assert_true(error instanceof ErrorEvent,
'onprocessorerror argument should be an ErrorEvent when ' +
'the constructor of AudioWorkletProcessor has an error.');
}, 'Test if |onprocessorerror| is called for an exception thrown from the ' +
'processor constructor.');
promise_test(async () => {
// An arbitrary Blob for testing. This is not deserializable on
// AudioWorkletGlobalScope.
const blob = new Blob([JSON.stringify({ hello: "world"}, null, 2)], {
type: "application/json",
});
const emptyErrorWorkletNode =
new AudioWorkletNode(context, 'empty-error', {processorOptions: {blob}});
let error = await new Promise(resolve => {
emptyErrorWorkletNode.onprocessorerror = (e) => resolve(e);
});
assert_true(error instanceof ErrorEvent,
'onprocessorerror argument should be an ErrorEvent when ' +
'the constructor of AudioWorkletProcessor has an error.');
}, 'Test if |onprocessorerror| is called for a transfered object that cannot ' +
'be deserialized on the AudioWorkletGlobalScope.');
promise_test(async () => {
const processErrorWorkletNode =
new AudioWorkletNode(context, 'process-error');
let error = await new Promise(resolve => {
processErrorWorkletNode.onprocessorerror = (e) => resolve(e);
// Need to start render to cause an exception in process().
context.startRendering();
});
assert_true(error instanceof ErrorEvent,
'onprocessorerror argument should be an ErrorEvent when the ' +
'process method of the AudioWorkletProcessor has an error.');
}, 'Test if |onprocessorerror| is called upon failure of process() method.');
</script>
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