Migrated several tests from blink to V8 repository.

test/webkit/prototypes.js

+// Copyright 2013 the V8 project authors. All rights reserved.
+// Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions
+// are met:
+// 1.  Redistributions of source code must retain the above copyright
+//     notice, this list of conditions and the following disclaimer.
+// 2.  Redistributions in binary form must reproduce the above copyright
+//     notice, this list of conditions and the following disclaimer in the
+//     documentation and/or other materials provided with the distribution.
+//
+// THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
+// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+// DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
+// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+// ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+description(
+'Test prototypes of various objects and the various means to access them.'
+);
+
+shouldBe("('').__proto__", "String.prototype");
+shouldBe("(0).__proto__", "Number.prototype");
+shouldBe("([]).__proto__", "Array.prototype");
+shouldBe("({}).__proto__", "Object.prototype");
+shouldBe("(new Date).__proto__", "Date.prototype");
+shouldBe("(new Number).__proto__", "Number.prototype");
+shouldBe("(new Object).__proto__", "Object.prototype");
+shouldBe("(new String).__proto__", "String.prototype");
+shouldBe("Array.prototype.__proto__", "Object.prototype");
+shouldBe("Date.prototype.__proto__", "Object.prototype");
+shouldBe("Number.prototype.__proto__", "Object.prototype");
+shouldBe("Object.prototype.__proto__", "null");
+shouldBe("String.prototype.__proto__", "Object.prototype");
+shouldBe("Array.__proto__", "Object.__proto__");
+shouldBe("Date.__proto__", "Object.__proto__");
+shouldBe("Number.__proto__", "Object.__proto__");
+shouldBe("String.__proto__", "Object.__proto__");
+
+shouldThrow("Object.getPrototypeOf('')");
+shouldThrow("Object.getPrototypeOf(0)");
+shouldBe("Object.getPrototypeOf([])", "Array.prototype");
+shouldBe("Object.getPrototypeOf({})", "Object.prototype");
+shouldBe("Object.getPrototypeOf(new Date)", "Date.prototype");
+shouldBe("Object.getPrototypeOf(new Number)", "Number.prototype");
+shouldBe("Object.getPrototypeOf(new Object)", "Object.prototype");
+shouldBe("Object.getPrototypeOf(new String)", "String.prototype");
+shouldBe("Object.getPrototypeOf(Array.prototype)", "Object.prototype");
+shouldBe("Object.getPrototypeOf(Date.prototype)", "Object.prototype");
+shouldBe("Object.getPrototypeOf(Number.prototype)", "Object.prototype");
+shouldBe("Object.getPrototypeOf(Object.prototype)", "null");
+shouldBe("Object.getPrototypeOf(String.prototype)", "Object.prototype");
+shouldBe("Object.getPrototypeOf(Array)", "Object.__proto__");
+shouldBe("Object.getPrototypeOf(Date)", "Object.__proto__");
+shouldBe("Object.getPrototypeOf(Number)", "Object.__proto__");
+shouldBe("Object.getPrototypeOf(String)", "Object.__proto__");
+
+shouldBeFalse("String.prototype.isPrototypeOf('')");
+shouldBeFalse("Number.prototype.isPrototypeOf(0)");
+shouldBeTrue("Array.prototype.isPrototypeOf([])");
+shouldBeTrue("Object.prototype.isPrototypeOf({})");
+shouldBeTrue("Date.prototype.isPrototypeOf(new Date)");
+shouldBeTrue("Number.prototype.isPrototypeOf(new Number)");
+shouldBeTrue("Object.prototype.isPrototypeOf(new Object)");
+shouldBeTrue("String.prototype.isPrototypeOf(new String)");
+shouldBeTrue("Object.prototype.isPrototypeOf(Array.prototype)");
+shouldBeTrue("Object.prototype.isPrototypeOf(Date.prototype)");
+shouldBeTrue("Object.prototype.isPrototypeOf(Number.prototype)");
+shouldBeTrue("Object.prototype.isPrototypeOf(String.prototype)");
+shouldBeTrue("Object.__proto__.isPrototypeOf(Array)");
+shouldBeTrue("Object.__proto__.isPrototypeOf(Date)");
+shouldBeTrue("Object.__proto__.isPrototypeOf(Number)");
+shouldBeTrue("Object.__proto__.isPrototypeOf(String)");
+
+shouldBeTrue("var wasSet = false; var o = { }; o.__defineGetter__(\"__proto__\", function() { wasSet = true }); o.__proto__; wasSet;");
+shouldBeTrue("var wasSet = false; var o = { }; o.__defineSetter__(\"__proto__\", function() { wasSet = true }); o.__proto__ = {}; wasSet;");
+shouldBeTrue("var wasSet = false; var o = { }; Object.defineProperty(o, \"__proto__\", { \"get\": function() { wasSet = true } }); o.__proto__; wasSet;");
+shouldBeFalse("var wasSet = false; var o = { }; Object.defineProperty(o, \"__proto__\", { \"__proto__\": function(x) { wasSet = true } }); o.__proto__ = {}; wasSet;");
+
+// Deleting Object.prototype.__proto__ removes the ability to set the object's prototype.
+shouldBeTrue("var o = {}; o.__proto__ = { x:true }; o.x");
+shouldBeFalse("var o = {}; o.__proto__ = { x:true }; o.hasOwnProperty('__proto__')");
+delete Object.prototype.__proto__;
+shouldBeUndefined("var o = {}; o.__proto__ = { x:true }; o.x");
+shouldBeTrue("var o = {}; o.__proto__ = { x:true }; o.hasOwnProperty('__proto__')");