partitioned-cookies-a-b-a-embed.tentative.https.html

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This WPT test may be referenced by the following Test IDs:
- /cookies/partitioned-cookies/partitioned-cookies-a-b-a-embed.tentative.https.html - WPT Dashboard Interop Dashboard

<!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);

  }, "Setting Partitioned cookie on top-level site and embedding a cross-site iframe");

</script>

</body>