about-blank-subresource.https.html

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This WPT test may be referenced by the following Test IDs:
- /cookies/samesite/about-blank-subresource.https.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<head>

  <script src="/resources/testharness.js"></script>

  <script src="/resources/testharnessreport.js"></script>

  <script src="/cookies/resources/cookie-helper.sub.js"></script>

</head>

<body onload="doTests()">

  <script>

  function doTests() {

    promise_test(async function(t) {

      var child = window.open("");

      child.onmessage = (ev) => {

        child.opener.postMessage(ev.data, '*');

};

      var grandKid = child.document.createElement("iframe");

      child.document.body.appendChild(grandKid);

      var value = "" + Math.random();

      await resetSameSiteCookies(SECURE_ORIGIN, value);

      // Load at what cookies a subresource below an about:blank iframe

      // inheritting this origin gets.

      grandKid.src = SECURE_ORIGIN + "/cookies/samesite/resources/iframe-subresource-report.html"

      var e = await wait_for_message("COOKIES", SECURE_ORIGIN);

      assert_cookie(SECURE_ORIGIN, e.data, "samesite_unspecified", value, true);

      assert_cookie(SECURE_ORIGIN, e.data, "samesite_lax", value, true);

      assert_cookie(SECURE_ORIGIN, e.data, "samesite_strict", value, true);

      assert_cookie(SECURE_ORIGIN, e.data, "samesite_none", value, true);

    }, "SameSite cookies on subresource of top-level about:blank window");

  </script>

</body>