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 24description("This test checks the behavior of [[DefineOwnProperty]] applied to Array objects (see ES5.1 15.4.5.1)."); 25 26// Test that properties other than length, array indices are handled as normal. 27shouldBeTrue("Object.defineProperty([], 'x', { get:function(){return true;} }).x"); 28 29// The length property can be set, and can be made read-only. 30shouldBe("Object.defineProperty([], 'length', { value: 1 }).length", '1'); 31shouldBe("var a = Object.defineProperty([], 'length', { writable: false }); a[1] = 1; a.length", '0'); 32shouldBe("var a = Object.defineProperty([], 'length', { writable: false }); a.length = 1; a.length", '0'); 33// If writable is not specified, it should not change. 34shouldBe("var a = Object.defineProperty([], 'length', {}); a.length = 1; a.length", '1'); 35 36// The length property can be replaced with an accessor, or made either enumerable or configurable. 37shouldThrow("Object.defineProperty([], 'length', { get:function(){return true;} })"); 38shouldThrow("Object.defineProperty([], 'length', { enumerable: true })"); 39shouldThrow("Object.defineProperty([], 'length', { configurable: true })"); 40shouldThrow("Object.defineProperty(Object.defineProperty([], 'length', { writable: false }), 'length', { writable: true })"); 41 42// The value of an indexed property can be set. 43shouldBe("var a = Object.defineProperty([], '0', { value: 42 }); a[0]", '42'); 44// An indexed property can be made non-writable/enumerable/configurable. 45shouldBe("var a = Object.defineProperty([42], '0', { writable: false }); a[0] = 1; a[0]", '42'); 46shouldBe("var a = Object.defineProperty([42], '0', { enumerable: false }); a[0] + Object.keys(a).length", '42'); 47shouldBe("var a = Object.defineProperty([42], '0', { configurable: false }); a.length = 0; a[0]", '42'); 48// An indexed property can be defined as an accessor. 49shouldBe("var foo = 0; Object.defineProperty([], '0', { set:function(x){foo = x;} })[0] = 42; foo", '42'); 50shouldBeTrue("Object.defineProperty([], '0', { get:function(){return true;} })[0]") 51// A configurable, non-writable property can be made writable, but a non-configurable one cannot. 52shouldBeTrue("Object.defineProperty(Object.defineProperty([true], '0', { configurable:true, writable: false }), '0', { writable: true })[0]"); 53shouldThrow("Object.defineProperty(Object.defineProperty([true], '0', { configurable:false, writable: false }), '0', { writable: true })[0]"); 54 55// Reassigning the value is okay if the property is writable. 56shouldBe("Object.defineProperty(Object.defineProperty([], '0', { value: 1, writable:true }), '0', { value: 2 })[0]", '2'); 57// Reassigning the value is okay if the value doesn't change. 58shouldBe("Object.defineProperty(Object.defineProperty([], '0', { value: 1 }), '0', { value: 1 })[0]", '1'); 59shouldBe("Object.defineProperty(Object.defineProperty([], '0', { value: Number.NaN }), '0', { value: -Number.NaN })[0]", 'Number.NaN'); 60shouldBe("Object.defineProperty(Object.defineProperty([], '0', { value: 'okay'.substring(0,2) }), '0', { value: 'not ok'.substring(4,6) })[0]", '"ok"'); 61shouldBe("Object.defineProperty(Object.defineProperty([], '0', { value: true }), '0', { value: true })[0]", 'true'); 62shouldBe("Object.defineProperty(Object.defineProperty([], '0', { value: false }), '0', { value: false })[0]", 'false'); 63shouldBe("Object.defineProperty(Object.defineProperty([], '0', { value: null }), '0', { value: null })[0]", 'null'); 64shouldBe("Object.defineProperty(Object.defineProperty([], '0', { value: undefined }), '0', { value: undefined })[0]", 'undefined'); 65shouldBe("Object.defineProperty(Object.defineProperty([], '0', { value: Math }), '0', { value: Math })[0]", 'Math'); 66// Reassigning the value is not okay if the value changes. 67shouldThrow("Object.defineProperty(Object.defineProperty([], '0', { value: 1 }), '0', { value: 2 })[0]"); 68shouldThrow("Object.defineProperty(Object.defineProperty([], '0', { value: 'okay' }), '0', { value: 'not ok' })[0]"); 69shouldThrow("Object.defineProperty(Object.defineProperty([], '0', { value: true }), '0', { value: false })[0]"); 70shouldThrow("Object.defineProperty(Object.defineProperty([], '0', { value: false }), '0', { value: true })[0]"); 71shouldThrow("Object.defineProperty(Object.defineProperty([], '0', { value: Math }), '0', { value: Object })[0]"); 72// Reassigning the value is not okay if the type changes. 73shouldThrow("Object.defineProperty(Object.defineProperty([], '0', { value: null }), '0', { value: undefined })[0]"); 74shouldThrow("Object.defineProperty(Object.defineProperty([], '0', { value: undefined }), '0', { value: null })[0]"); 75 76Object.defineProperty(Array.prototype, "0", { set: function () { throw false; } }); 77Object.defineProperty(Array.prototype, "1", { set: function () { throw false; } }); 78var arrObj = [ , false ]; 79Object.defineProperty(arrObj, "0", { set: function (x) { this.set = x === 42; } }); 80shouldBeTrue("arrObj[0] = 42; arrObj.set;"); 81shouldBeTrue("arrObj[1] = true; arrObj[1];"); 82 83successfullyParsed = true; 84