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Test Info:

<!DOCTYPE html>
<title>Test about: main frame navigation in a prerendered page</title>
<meta name="timeout" content="long">
<script src="/common/utils.js"></script>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="../resources/utils.js"></script>
<script src="resources/utils.js"></script>
setup(() => assertSpeculationRulesIsSupported());
promise_test(async t => {
const uid = token();
const bc = new PrerenderChannel('result', uid);
const gotMessage = new Promise(resolve => {
bc.addEventListener('message', e => {
}, {
once: true
const url = `resources/main-frame-navigation.html?uid=${uid}`;, '_blank', 'noopener');
const result = await gotMessage;
assert_equals(result.onprerenderingchangeCalled, true,
'prerenderingchange event should be called after activation.');
assert_equals(result.prerenderingValueBeforeActivation, true,
'document.prerendering should be true prior to activation.');
assert_equals(result.prerenderingValueAfterActivation, false,
'document.prerendering should be false after activation.');
}, 'Test document.prerendering and prerenderingchange event in the navigated ' +