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<!DOCTYPE html>
<title>Same-origin prerendering: sendBeacon</title>
<meta name="variant" content="?target_hint=_self">
<meta name="variant" content="?target_hint=_blank">
<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/utils.js"></script>
<script src="resources/utils.js"></script>
<script>
setup(() => assertSpeculationRulesIsSupported());
promise_test(async t => {
const STORE_URL = '/speculation-rules/prerender/resources/key-value-store.py';
// Create a prerendered page.
const rule_extras = {'target_hint': getTargetHint()};
const {exec, activate} = await create_prerendered_page(
t, undefined, undefined, rule_extras);
// This test will send 3 beacons. Each beacon will be stored with these keys
// on the server.
const keys = [token(), token(), token()];
// Ask the prerendered page to send beacons during prerendering and
// prerenderingchange.
await exec(async (store_url, keys) => {
const url1 = `${store_url}?key=${keys[0]}&value=during-prerendering`;
navigator.sendBeacon(url1);
document.onprerenderingchange = _ => {
const url2 = `${store_url}?key=${keys[1]}&value=onprerenderingchange`;
navigator.sendBeacon(url2);
};
}, [STORE_URL, keys]);
// Wait for the beacon sent during prerendering.
assert_equals(await nextValueFromServer(keys[0]), 'during-prerendering');
await activate();
// Wait for the beacon sent during the prerenderingchange event.
assert_equals(await nextValueFromServer(keys[1]), 'onprerenderingchange');
// Ask the activated page to send a beacon.
await exec(async (store_url, keys) => {
const url3 = `${store_url}?key=${keys[2]}&value=after-activation`;
navigator.sendBeacon(url3);
}, [STORE_URL, keys]);
// Wait for the beacon sent after activation.
assert_equals(await nextValueFromServer(keys[2]), 'after-activation');
}, 'Prerendering page should be able to send beacons');
</script>
<body>
</body>
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