detached-frame.https.html

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This WPT test may be referenced by the following Test IDs:
- /background-sync/crashtests/detached-frame.https.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<html class="test-wait">

<meta charset="utf-8">

<title>Background Sync: Accessing sync and periodicSync on detached frame</title>

<link rel="help" href="https://wicg.github.io/background-sync/spec/">

<link rel="help" href="https://wicg.github.io/periodic-background-sync/">

<body>

<script>

(async () => {

  const iframe = document.createElement('iframe');

  iframe.src = '/service-workers/service-worker/resources/blank.html';

  await new Promise(resolve => {

    iframe.onload = resolve;

    document.body.appendChild(iframe);

});

  const reg = await iframe.contentWindow.navigator.serviceWorker.register(

      '/service-workers/service-worker/resources/empty-worker.js',

      { scope: '/service-workers/service-worker/resources/scope/detached-sync' });

  iframe.remove();

  // Access `sync` and `periodicSync` after frame is detached.

  const sync = reg.sync;

  const periodicSync = reg.periodicSync;

  try {

    await reg.unregister();

  } catch (e) { }

  document.documentElement.classList.remove('test-wait');

})();

</script>

</body>

</html>