| <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN"> |
| <html> |
| <head> |
| <script src="../../../resources/js-test.js"></script> |
| </head> |
| <body> |
| <script> |
| description("Test what happens when you set the window's prototype to various values."); |
| |
| var originalWindowPrototype = __proto__; |
| var chainPointingBackToWindow = { __proto__: window }; |
| var anotherObject = { }; |
| var error = "'TypeError: Immutable prototype object \\'#<Window>\\' cannot have their prototype set'"; |
| |
| shouldThrow("__proto__ = window; __proto__", error); |
| shouldThrow("__proto__ = chainPointingBackToWindow; __proto__", error); |
| shouldBe("__proto__ = 1; __proto__", "originalWindowPrototype"); |
| shouldBe("__proto__ = 'a string'; __proto__", "originalWindowPrototype"); |
| shouldThrow("__proto__ = anotherObject; __proto__", error); |
| shouldBe("anotherObject.__proto__ = window; __proto__", "originalWindowPrototype"); |
| shouldBe("__proto__ = 1; __proto__", "originalWindowPrototype"); |
| shouldBe("__proto__ = 'a string'; __proto__", "originalWindowPrototype"); |
| shouldThrow("__proto__ = anotherObject; __proto__", error); |
| shouldBe("__proto__ = originalWindowPrototype; __proto__", "originalWindowPrototype"); |
| shouldBe("anotherObject.__proto__ = window; anotherObject.__proto__", "window"); |
| shouldThrow("__proto__ = null; __proto__", error); |
| shouldThrow("location.__proto__.__proto__ = location", "'TypeError: Immutable prototype object \\'#<Location>\\' cannot have their prototype set'"); |
| </script> |
| </body> |
| </html> |
