prerender-coop.https.html

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This WPT test may be referenced by the following Test IDs:
- /css/css-view-transitions/navigation/prerender-coop.https.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<title>View transitions: cross-document navigation to a prerender with COOP</title>

<link rel="help" href="https://drafts.csswg.org/css-view-transitions-2/">

<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="/speculation-rules/resources/utils.js"></script>

<script src="/speculation-rules/prerender/resources/utils.js"></script>

<script>

setup(() => assertSpeculationRulesIsSupported('prerender'));

promise_test(async t => {

  const uid = token();

  const result = await new Promise(resolve => {

    const channel = new PrerenderChannel('result', uid);

    channel.addEventListener('message', e => resolve(e.data), {once: true});

    const url = `resources/prerender-coop.html?mode=runner&uid=${uid}`;

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

});

  assert_equals(result, "pass");

}, 'View transitions work for cross-document navigation to a prerender with COOP');

</script>