<meta charset=utf-8>

<title>Test for ...</title>

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

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

<script>

test(function() {

  assert_throws(new TypeError, function() {

    Object.setPrototypeOf(window, Object.create(window));

  }, "Setting prototype via setPrototypeOf");

  assert_throws(new TypeError, function() {

    window.__proto__ = Object.create(window);

  }, "Setting prototype via __proto__");

}, "Setting the prototype of a window to something that has the window on its proto chain should throw");

</script>