| <!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> |
