LayoutTests/fast/dom/Window/script-tests/window-custom-prototype.js

   1 description("Test what happens when you set the window's prototype to various values.");
   2
   3 var originalWindowPrototype = __proto__;
   4 var chainPointingBackToWindow = { __proto__: window };
   5 var anotherObject = { };
   6
   7 shouldThrow("__proto__ = window; __proto", "'Error: cyclic __proto__ value'");
   8 shouldThrow("__proto__ = chainPointingBackToWindow; __proto__", "'Error: cyclic __proto__ value'");
   9 shouldBe("__proto__ = 1; __proto__", "originalWindowPrototype");
  10 shouldBe("__proto__ = 'a string'; __proto__", "originalWindowPrototype");
  11 shouldBe("__proto__ = anotherObject; __proto__", "anotherObject");
  12 shouldThrow("anotherObject.__proto__ = window; __proto__", "'Error: cyclic __proto__ value'");
  13 shouldBe("__proto__ = null; __proto__", "null");
  14 shouldBe("__proto__ = 1; __proto__", "null");
  15 shouldBe("__proto__ = 'a string'; __proto__", "null");
  16 shouldBe("__proto__ = anotherObject; __proto__", "anotherObject");
  17 shouldBe("__proto__ = originalWindowPrototype; __proto__", "originalWindowPrototype");
  18 shouldBe("anotherObject.__proto__ = window; anotherObject.__proto__", "window");