about-blank-iframes.html

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This WPT test may be referenced by the following Test IDs:
- /speculation-rules/prerender/about-blank-iframes.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<title>Test about:blank iframes prerendering state</title>

<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="../resources/utils.js"></script>

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

<body>

<script>

setup(() => assertSpeculationRulesIsSupported());

promise_test(async t => {

  const uid = token();

  const channel = new PrerenderChannel('test-channel', uid);

  const gotMessage = new Promise(resolve => {

    channel.addEventListener('message', e => {

      resolve(e.data);

    }, {once: true});

});

  // Make the window to start the prerender.

  const url = `resources/about-blank-iframes.html?uid=${uid}`;

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

  const msg = await gotMessage;

  assert_equals(msg, 'PASS');

}, 'about:blank iframes');

</script>