offlineaudiocontext-event-listener-gc.html

<!DOCTYPE html>
<script src="../../resources/testharness.js"></script>
<script src="../../resources/testharnessreport.js"></script>
<script src="../resources/audit-util.js"></script>
<script src="../resources/audit.js"></script>
<script id="layout-test-code">
let audit = Audit.createTaskRunner();

let sampleRate = 48000;
let renderSeconds = 1;
let renderFrames = sampleRate * renderSeconds;
let contextChannels = 2;

// Event listeners should not be garbage-collected prematurely.
// The test passes if it does not time out waiting for oncomplete.
audit.define('event-listener-gc', (task, should) => {
  let context = new OfflineAudioContext(contextChannels, renderFrames, sampleRate);

  let buffer = context.createBuffer(contextChannels, renderFrames, sampleRate);
  buffer.getChannelData(0).fill(1);
  buffer.getChannelData(1).fill(2);

  let source = context.createBufferSource();
  source.buffer = buffer;
  source.connect(context.destination);
  source.start();

  context.oncomplete = () => task.done();
  context.startRendering();

  // Run a full GC. This should not collect the event listener.
  if (window.GCController)
    window.GCController.collectAll();
});

audit.run();
</script>

chromium/third_party/blink/web_tests/webaudio/OfflineAudioContext/offlineaudiocontext-event-listener-gc.html