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<!DOCTYPE html>
<title>Access to the Wake Lock API is deferred</title>
<meta name="timeout" content="long">
<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="/common/utils.js"></script>
<script src="../resources/utils.js"></script>
<script src="resources/utils.js"></script>

<body>
<script>
setup(() => assertSpeculationRulesIsSupported());

promise_test(async t => {
  const uid = token();
  const bc = new PrerenderChannel('test-channel', uid);

  // We grant the permission here to make a more discerning test because
  // navigator.wakeLock.request() waits until the permission is granted, which
  // is deferred during prerendering so the test would trivially pass without
  // the permission.
  await test_driver.set_permission({ name: 'screen-wake-lock' }, 'granted');

  const gotMessage = new Promise(resolve => {
    bc.addEventListener('message', e => {
      resolve(e.data);
    }, {
      once: true
    });
  });
  const url = `resources/wake-lock.https.html?uid=${uid}`;
  window.open(url, '_blank', 'noopener');

  const result = await gotMessage;
  const expected = [
    {
      event: 'started waiting navigator.wakeLock.request test',
      prerendering: true
    },
    {
      event: 'navigator.wakeLock.request failed',
      prerendering: true
    },
    {
      event: 'requesting navigator.wakeLock.request on prerendering change',
      prerendering: false
    },
    {
      event: 'prerendering change',
      prerendering: false
    },
    {
      event: 'finished waiting navigator.wakeLock.request test',
      prerendering: false
    },
  ];
  assert_equals(result.length, expected.length);
  for (let i = 0; i < result.length; i++) {
    assert_equals(result[i].event, expected[i].event, `event[${i}]`);
    assert_equals(result[i].prerendering, expected[i].prerendering,
      `prerendering[${i}]`);
  }
  bc.close();

  // Send a close signal to PrerenderEventCollector on the prerendered page.
  new PrerenderChannel('close', uid).postMessage('');
}, `the access to the Wake Lock API should be deferred until the prerendered
    page is activated`);
</script>