sandbox-iframe-nested.https.html

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This test has a WPT meta file that expects 1 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /cookies/samesite/sandbox-iframe-nested.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()">

  <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>