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<!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()">
  <iframe id="if" sandbox="allow-scripts">
  </iframe>
  <script>
  function doTests() {
    promise_test(async function(t) {
      var value = "" + Math.random();
      await resetSameSiteCookies(SECURE_ORIGIN, value);
      var child = document.getElementById("if");
      child.src = SECURE_ORIGIN + "/cookies/samesite/resources/iframe-navigate-report.html";

      // the iframe nested inside if should post COOKIES to here.
      var e = await wait_for_message("COOKIES");
      // Not testing unspecified here as to not depend on the presence or
      // absence of upcoming change of behavior.
      assert_cookie(SECURE_ORIGIN, e.data, "samesite_lax", value, false);
      assert_cookie(SECURE_ORIGIN, e.data, "samesite_strict", value, false);
      assert_cookie(SECURE_ORIGIN, e.data, "samesite_none", value, true);
    }, "SameSite cookies with intervening sandboxed iframe and navigation");
  }
  </script>
</body>