ancestor-chain-top-level-redirect.https.html

<!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="/cookies/resources/testharness-helpers.js"></script>
<title>Test partitioned cookies are sent in top-level cross-site to same-site redirects</title>
</head>
<body>
<script>
  const partitionedCookie = "ancestor=chain";
  // Cross-site html file will add query param 'redirect=true'
  // to indicate that redirect has been initiated. This is done
  // to allow for the redirect to return the window to this site.
  // This is needed to prevent a timeout in the test harness.
  if(!window.location.href.includes("redirect=true")){
    const partitionedCookieAttributes =
      "; Secure; Path=/; SameSite=None; Partitioned";
    const partitionedCookieLine =
      partitionedCookie + partitionedCookieAttributes;
    //Set partitioned cookie to top-level site.
    document.cookie = partitionedCookieLine;
    assert_true(document.cookie.includes(partitionedCookie));

    //Navigate top-level to cross-site.
    const resourceDir = "/cookies/partitioned-cookies/resources/";
    const crossSiteUrl = new URL(
      resourceDir + "ancestor-chain-cross-site-top-level.html?host="
      +`${window.location.hostname}`,
      `https://${TEST_HOST}:${window.location.port}`);

    window.location=crossSiteUrl.href;
  }

  //Confirm that the partitioned cookie is available after redirect
  //back from cross-site in document and http headers.
    test(() => {
      assert_true(document.cookie.includes(partitionedCookie));
      assert_true(window.location.href.includes(partitionedCookie));

}, "Partitioned Cookies are available in top-level cross-site to same-site redirects");
</script>
</body>
chromium/third_party/blink/web_tests/http/tests/cookies/partitioned-cookies/ancestor-chain-top-level-redirect.https.html
