1 // Copyright 2013 the V8 project authors. All rights reserved. 2 // Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved. 3 // 4 // Redistribution and use in source and binary forms, with or without 5 // modification, are permitted provided that the following conditions 6 // are met: 7 // 1. Redistributions of source code must retain the above copyright 8 // notice, this list of conditions and the following disclaimer. 9 // 2. Redistributions in binary form must reproduce the above copyright 10 // notice, this list of conditions and the following disclaimer in the 11 // documentation and/or other materials provided with the distribution. 12 // 13 // THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY 14 // EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 15 // WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 16 // DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY 17 // DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 18 // (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 19 // LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON 20 // ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 21 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 22 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 23 24 description( 25 'Test prototypes of various objects and the various means to access them.' 26 ); 27 28 shouldBe("('').__proto__", "String.prototype"); 29 shouldBe("(0).__proto__", "Number.prototype"); 30 shouldBe("([]).__proto__", "Array.prototype"); 31 shouldBe("({}).__proto__", "Object.prototype"); 32 shouldBe("(new Date).__proto__", "Date.prototype"); 33 shouldBe("(new Number).__proto__", "Number.prototype"); 34 shouldBe("(new Object).__proto__", "Object.prototype"); 35 shouldBe("(new String).__proto__", "String.prototype"); 36 shouldBe("Array.prototype.__proto__", "Object.prototype"); 37 shouldBe("Date.prototype.__proto__", "Object.prototype"); 38 shouldBe("Number.prototype.__proto__", "Object.prototype"); 39 shouldBe("Object.prototype.__proto__", "null"); 40 shouldBe("String.prototype.__proto__", "Object.prototype"); 41 shouldBe("Array.__proto__", "Object.__proto__"); 42 shouldBe("Date.__proto__", "Object.__proto__"); 43 shouldBe("Number.__proto__", "Object.__proto__"); 44 shouldBe("String.__proto__", "Object.__proto__"); 45 46 shouldBe("Object.getPrototypeOf('')", "String.prototype"); 47 shouldBe("Object.getPrototypeOf(0)", "Number.prototype"); 48 shouldBe("Object.getPrototypeOf([])", "Array.prototype"); 49 shouldBe("Object.getPrototypeOf({})", "Object.prototype"); 50 shouldBe("Object.getPrototypeOf(new Date)", "Date.prototype"); 51 shouldBe("Object.getPrototypeOf(new Number)", "Number.prototype"); 52 shouldBe("Object.getPrototypeOf(new Object)", "Object.prototype"); 53 shouldBe("Object.getPrototypeOf(new String)", "String.prototype"); 54 shouldBe("Object.getPrototypeOf(Array.prototype)", "Object.prototype"); 55 shouldBe("Object.getPrototypeOf(Date.prototype)", "Object.prototype"); 56 shouldBe("Object.getPrototypeOf(Number.prototype)", "Object.prototype"); 57 shouldBe("Object.getPrototypeOf(Object.prototype)", "null"); 58 shouldBe("Object.getPrototypeOf(String.prototype)", "Object.prototype"); 59 shouldBe("Object.getPrototypeOf(Array)", "Object.__proto__"); 60 shouldBe("Object.getPrototypeOf(Date)", "Object.__proto__"); 61 shouldBe("Object.getPrototypeOf(Number)", "Object.__proto__"); 62 shouldBe("Object.getPrototypeOf(String)", "Object.__proto__"); 63 64 shouldBeFalse("String.prototype.isPrototypeOf('')"); 65 shouldBeFalse("Number.prototype.isPrototypeOf(0)"); 66 shouldBeTrue("Array.prototype.isPrototypeOf([])"); 67 shouldBeTrue("Object.prototype.isPrototypeOf({})"); 68 shouldBeTrue("Date.prototype.isPrototypeOf(new Date)"); 69 shouldBeTrue("Number.prototype.isPrototypeOf(new Number)"); 70 shouldBeTrue("Object.prototype.isPrototypeOf(new Object)"); 71 shouldBeTrue("String.prototype.isPrototypeOf(new String)"); 72 shouldBeTrue("Object.prototype.isPrototypeOf(Array.prototype)"); 73 shouldBeTrue("Object.prototype.isPrototypeOf(Date.prototype)"); 74 shouldBeTrue("Object.prototype.isPrototypeOf(Number.prototype)"); 75 shouldBeTrue("Object.prototype.isPrototypeOf(String.prototype)"); 76 shouldBeTrue("Object.__proto__.isPrototypeOf(Array)"); 77 shouldBeTrue("Object.__proto__.isPrototypeOf(Date)"); 78 shouldBeTrue("Object.__proto__.isPrototypeOf(Number)"); 79 shouldBeTrue("Object.__proto__.isPrototypeOf(String)"); 80 81 shouldBeTrue("var wasSet = false; var o = { }; o.__defineGetter__(\"__proto__\", function() { wasSet = true }); o.__proto__; wasSet;"); 82 shouldBeTrue("var wasSet = false; var o = { }; o.__defineSetter__(\"__proto__\", function() { wasSet = true }); o.__proto__ = {}; wasSet;"); 83 shouldBeTrue("var wasSet = false; var o = { }; Object.defineProperty(o, \"__proto__\", { \"get\": function() { wasSet = true } }); o.__proto__; wasSet;"); 84 shouldBeFalse("var wasSet = false; var o = { }; Object.defineProperty(o, \"__proto__\", { \"__proto__\": function(x) { wasSet = true } }); o.__proto__ = {}; wasSet;"); 85 86 // Deleting Object.prototype.__proto__ removes the ability to set the object's prototype. 87 shouldBeTrue("var o = {}; o.__proto__ = { x:true }; o.x"); 88 shouldBeFalse("var o = {}; o.__proto__ = { x:true }; o.hasOwnProperty('__proto__')"); 89 delete Object.prototype.__proto__; 90 shouldBeUndefined("var o = {}; o.__proto__ = { x:true }; o.x"); 91 shouldBeTrue("var o = {}; o.__proto__ = { x:true }; o.hasOwnProperty('__proto__')"); 92
