Content - 0a6ec249fa3b8a3df2770e111bbde03ce181c833 - 1bea1f1/js/behaviours/SetPrototypeOf-window.html

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Tip revision: c2f248d611d9642f1be31c401e8c07171baa0824 authored by Luke Bjerring on 03 April 2018, 20:21:31 UTC
Merge upstream

Tip revision: c2f248d

SetPrototypeOf-window.html

<!DOCTYPE html>
<meta charset=utf-8>
<title>Test for [[SetPrototypeOf]] with Windows</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<div id="log"></div>
<script>
test(function() {
  assert_throws(new TypeError, function() {
    Object.setPrototypeOf(window, window);
  }, "Setting the prototype should throw");
}, "Setting the prototype of a window to itself via setPrototypeOf");

test(function() {
  assert_throws(new TypeError, function() {
    window.__proto__ = window;
  }, "Setting the prototype should throw");
}, "Setting the prototype of a window to itself via __proto__");

test(function() {
  assert_throws(new TypeError, function() {
    Object.setPrototypeOf(window, Object.create(window));
  }, "Setting the prototype should throw");
}, "Setting the prototype of a window to something that has the window on " +
   "its proto chain via setPrototypeOf");

test(function() {
  assert_throws(new TypeError, function() {
    window.__proto__ = Object.create(window);
  }, "Setting the prototype should throw");
}, "Setting the prototype of a window to something that has the window on " +
   "its proto chain via __proto__");
</script>

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https://github.com/web-platform-tests/wpt