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Test Info:
- This WPT test may be referenced by the following Test IDs:
- /webaudio/the-audio-api/the-audioworklet-interface/audioworkletnode-onerror.https.html - WPT Dashboard Interop Dashboard
<!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;
const ERROR_PROCESSOR_FILENAME = 'processors/error-processor.js';
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('./' + ERROR_PROCESSOR_FILENAME);
});
promise_test(async () => {
const constructorErrorWorkletNode =
new AudioWorkletNode(context, 'constructor-error');
const 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}});
const 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');
const 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.');
assert_greater_than(error.lineno, 0, 'Error line number should be set');
assert_greater_than(error.colno, 0, 'Error column number should be set');
assert_true(error.filename.endsWith(ERROR_PROCESSOR_FILENAME),
'Error filename should end with ' + ERROR_PROCESSOR_FILENAME);
}, 'Test if |onprocessorerror| is called upon failure of process() method.');
</script>