service-worker-controlled-after-restore.https.html

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This WPT test may be referenced by the following Test IDs:
- /html/browsers/browsing-the-web/back-forward-cache/service-worker-controlled-after-restore.https.html - WPT Dashboard Interop Dashboard

<!doctype html>

<meta name="timeout" content="long">

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

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

<script src="/common/utils.js"></script>

<script src="/common/dispatcher/dispatcher.js"></script>

<script src="resources/helper.sub.js"></script>

<script src="/service-workers/service-worker/resources/test-helpers.sub.js"></script>

<script>

promise_test(async t => {

  const pageA = new RemoteContext(token());

  const pageB = new RemoteContext(token());

  const urlA = location.origin + executorPath + pageA.context_id;

  const urlB = originCrossSite + executorPath + pageB.context_id;

  // Register a service worker.

  const workerUrl =

      'resources/service-worker.js?pipe=header(Service-Worker-Allowed,../)';

  const registration =

      await service_worker_unregister_and_register(t, workerUrl, './');

  t.add_cleanup(_ => registration.unregister());

  await wait_for_state(t, registration.installing, 'activated');

  window.open(urlA, '_blank', 'noopener');

  await pageA.execute_script(waitForPageShow);

  assert_true(

    await pageA.execute_script(

        () => (navigator.serviceWorker.controller !== null)),

    'pageA should be controlled before navigation');

  await navigateAndThenBack(pageA, pageB, urlB);

  await assert_bfcached(pageA);

  assert_true(

    await pageA.execute_script(

        () => (navigator.serviceWorker.controller !== null)),

    'navigator.serviceWorker.controller should be non-null ' +

    'after restored from BFCache');

  const isControlled = await pageA.execute_script(

      () => fetch('/is-controlled').then(r => r.text()));

  assert_true(

    await pageA.execute_script(

        () => (navigator.serviceWorker.controller !== null)),

    'navigator.serviceWorker.controller should be non-null ' +

    'after restored from BFCache and after fetch');

  assert_equals(isControlled, 'controlled',

    'fetch should be intercepted after restored from BFCache');

}, 'Pages should remain controlled after restored from BFCache');

</script>