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<!doctype html>
<head>
<meta charset="utf-8"/>
<meta name="timeout" content="long">
<meta name="help" href="https://github.com/WICG/CHIPS#chips-cookies-having-independent-partitioned-state">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/common/get-host-info.sub.js"></script>
<script src="/cookies/resources/cookie-helper.sub.js"></script>
<script src="/cookies/partitioned-cookies/resources/test-helpers.js"></script>
<title>Test partitioned cookies consider ancestor chain</title>
</head>
<body>
<script>
// This test is sets up an A1->B->A2 frame tree, where the top-level site is embedded
// in a cross-site embed. If the partitionKey of the cookie has a cross-site ancestor bit,
// the cookie set on site A1 will not be accessible on site A2.
promise_test(async() => {
assert_equals(document.cookie, "");
const partitionedCookie = "ancestor=chain";
const partitionedCookieAttributes =
"; Secure; Path=/; SameSite=None; Partitioned";
const partitionedCookieLine =
partitionedCookie + partitionedCookieAttributes;
document.cookie = partitionedCookieLine;
assert_true(document.cookie.includes(partitionedCookie));
const iframe = document.createElement("iframe");
const url = new URL(
"/cookies/partitioned-cookies/resources/" +
"ancestor-chain-cross-site-embed.html",
get_host_info().HTTPS_NOTSAMESITE_ORIGIN + self.location.pathname);
iframe.src = url.href;
document.body.appendChild(iframe);
await fetch_tests_from_window(iframe.contentWindow);
erase_cookie_from_js("ancestor", "Secure; Path=/; SameSite=None; Partitioned");
}, "Setting Partitioned cookie on top-level site and embedding a cross-site iframe");
</script>
</body>
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