53 lines
1.7 KiB
HTML
53 lines
1.7 KiB
HTML
<!DOCTYPE html>
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<title>Same-origin prerendering can access localStorage</title>
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<meta name="variant" content="?target_hint=_self">
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<meta name="variant" content="?target_hint=_blank">
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<meta name="timeout" content="long">
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<script src="/common/utils.js"></script>
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<script src="/common/dispatcher/dispatcher.js"></script>
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<script src="../resources/utils.js"></script>
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<script src="resources/utils.js"></script>
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<body>
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<script>
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setup(() => assertSpeculationRulesIsSupported());
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promise_test(async t => {
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const uid1 = token();
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const uid2 = token();
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// A promise to wait until a prerendered page writes data with the "prerender"
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// key in the local storage.
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const write_promise = new Promise((resolve, reject) => {
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window.addEventListener("storage", event => {
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if (event.key !== 'prerender') {
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reject("wrong key");
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} else {
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resolve();
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}
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}, { once: true });
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});
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const rule_extras = {'target_hint': getTargetHint()};
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window.localStorage.setItem('initial', uid1);
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const {exec} = await create_prerendered_page(
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t, undefined, undefined, rule_extras);
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const result = await exec(uid2 => {
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window.localStorage.setItem('prerender', uid2);
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return window.localStorage.getItem('initial');
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}, [uid2])
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// Start prerendering a page that attempts to access localStorage API.
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assert_equals(
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result, uid1,
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'prerendering page should be able to read from local storage');
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await write_promise;
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assert_equals(
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window.localStorage.getItem('prerender'), uid2,
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'prerendering page should be able to write to local storage');
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}, 'prerendering page should be able to access local storage');
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</script>
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