LayoutTests/js/kde/script-tests/prototype_proto.js

shouldBe("Object.prototype.__proto__ == Object.prototype","false");
shouldBe("Function.prototype.__proto__","Object.prototype");
shouldBe("Array.prototype.__proto__","Object.prototype");
shouldBe("String.prototype.__proto__","Object.prototype");
shouldBe("Boolean.prototype.__proto__","Object.prototype");
shouldBe("Number.prototype.__proto__","Object.prototype");
shouldBe("Date.prototype.__proto__","Object.prototype");
shouldBe("RegExp.prototype.__proto__","Object.prototype");
shouldBe("Error.prototype.__proto__","Object.prototype");