clear-site-data-cross-site-window.html

<!doctype html>
<head>
<title>Test Clear-Site-Data and partitioned cookies</title>
<script src="/resources/testharness.js"></script>
<script src="/cookies/resources/testharness-helpers.js"></script>
</head>
<body>
<script>

promise_test(async () => {
  assert_equals(window.location.hostname, TEST_HOST);
  assert_equals(document.cookie, "");

  const cookieLine = "__Host-pc=0; Secure; Path=/; SameSite=None; Partitioned";

  document.cookie = cookieLine;
  assert_true(document.cookie.includes("__Host-pc"));

  // Test that Clear-Site-Data deletes the cookie in this partition.
  const resp = await fetch(
      "/cookies/resources/clear-site-data.php", {method: "GET"});
  assert_equals(resp.status, 200);
  assert_equals(document.cookie, "");

  const url = new URL(
      "/cookies/partitioned-cookies/resources/" +
          "clear-site-data-same-site-window.html",
      `https://${ORIGINAL_HOST}:${window.location.port}`);
  const popup = window.open(String(url));
  fetch_tests_from_window(popup);
}, "Clearing partitioned cookies in another partition");

</script>
</body>

chromium/third_party/blink/web_tests/http/tests/cookies/partitioned-cookies/resources/clear-site-data-cross-site-window.html