callback-detached-buffer.html

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This test has a WPT meta file that expects 1 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /webaudio/the-audio-api/the-audiocontext-interface/callback-detached-buffer.html - WPT Dashboard Interop Dashboard

<!doctype html>

<meta charset=utf-8>

<title>Test to verify decodeAudioData() invokes the error callback for a detached ArrayBuffer</title>

<script src=/resources/testharness.js></script>

<script src=/resources/testharnessreport.js></script>

<body></body>

<script>

promise_test(async t => {

  const context = new AudioContext();

  t.add_cleanup(() => context.close());

  // create a detached ArrayBuffer

  const audioData = new ArrayBuffer(4);

  structuredClone({}, { transfer: [audioData] });

  // save a reference to the promise res

  let resolve;

  const errorInvoked = new Promise(res => { resolve = res; });

  // create decodeAudioData() promise with success and error callbacks

  const success = t.unreached_func('success callback should not run');

  const error = t.step_func(err => { resolve(err); });

  const promise = context.decodeAudioData(audioData, success, error);

  // assert promise rejects with DataCloneError and await pending errorInvoked promise

  const [, err] = await Promise.all([

    promise_rejects_dom(t, 'DataCloneError', promise),

    errorInvoked,

]);

  // err must be a DataCloneError DOMException

  assert_true(err instanceof DOMException, 'error callback argument is a DOMException');

  assert_equals(err.name, 'DataCloneError');

}, 'error callback is invoked with DataCloneError');

</script>