clipboard-garbage-collection-race-condition.html

<!doctype html>
<meta charset="utf-8">
<title>
  Async Clipboard write garbage collection race condition test
</title>
<body>Body needed for test_driver.click()</body>
<script src="../../resources/testharness.js"></script>
<script src="../../resources/testharnessreport.js"></script>
<script src="../../resources/testdriver.js"></script>
<script src="../../resources/testdriver-vendor.js"></script>
<script src="resources/user-activation.js"></script>

<script>
promise_test(async t => {
  await test_driver.set_permission({name: 'clipboard-write'}, 'granted');

  const blobText = new Blob(['test text'], {type: 'text/plain'});
  const clipboardItemInput = new ClipboardItem(
        {'text/plain' : blobText});

  await waitForUserActivation();
  const promise = navigator.clipboard.write([clipboardItemInput]);
  for (let i = 0; i < 10; ++i) {
    // TODO(https://github.com/web-platform-tests/wpt/issues/7899): Support
    // cross-browser GC triggers, and move this test to the Web Platform
    // Test suite.
    if(window.gc) {
      window.gc();
    }
    await new Promise(resolve => setTimeout(resolve, 0));
  }
  await promise;
}, 'Verify write clipboard avoids garbage collection race condition.');
</script>

chromium/third_party/blink/web_tests/clipboard/async-clipboard/clipboard-garbage-collection-race-condition.html