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("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. 27 shouldBeTrue("Object.defineProperty([], 'x', { get:function(){return true;} }).x"); 28 29 // The length property can be set, and can be made read-only. 30 shouldBe("Object.defineProperty([], 'length', { value: 1 }).length", '1'); 31 shouldBe("var a = Object.defineProperty([], 'length', { writable: false }); a[1] = 1; a.length", '0'); 32 shouldBe("var a = Object.defineProperty([], 'length', { writable: false }); a.length = 1; a.length", '0'); 33 // If writable is not specified, it should not change. 34 shouldBe("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. 37 shouldThrow("Object.defineProperty([], 'length', { get:function(){return true;} })"); 38 shouldThrow("Object.defineProperty([], 'length', { enumerable: true })"); 39 shouldThrow("Object.defineProperty([], 'length', { configurable: true })"); 40 shouldThrow("Object.defineProperty(Object.defineProperty([], 'length', { writable: false }), 'length', { writable: true })"); 41 42 // The value of an indexed property can be set. 43 shouldBe("var a = Object.defineProperty([], '0', { value: 42 }); a[0]", '42'); 44 // An indexed property can be made non-writable/enumerable/configurable. 45 shouldBe("var a = Object.defineProperty([42], '0', { writable: false }); a[0] = 1; a[0]", '42'); 46 shouldBe("var a = Object.defineProperty([42], '0', { enumerable: false }); a[0] + Object.keys(a).length", '42'); 47 shouldBe("var a = Object.defineProperty([42], '0', { configurable: false }); a.length = 0; a[0]", '42'); 48 // An indexed property can be defined as an accessor. 49 shouldBe("var foo = 0; Object.defineProperty([], '0', { set:function(x){foo = x;} })[0] = 42; foo", '42'); 50 shouldBeTrue("Object.defineProperty([], '0', { get:function(){return true;} })[0]") 51 // A configurable, non-writable property can be made writable, but a non-configurable one cannot. 52 shouldBeTrue("Object.defineProperty(Object.defineProperty([true], '0', { configurable:true, writable: false }), '0', { writable: true })[0]"); 53 shouldThrow("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. 56 shouldBe("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. 58 shouldBe("Object.defineProperty(Object.defineProperty([], '0', { value: 1 }), '0', { value: 1 })[0]", '1'); 59 shouldBe("Object.defineProperty(Object.defineProperty([], '0', { value: Number.NaN }), '0', { value: -Number.NaN })[0]", 'Number.NaN'); 60 shouldBe("Object.defineProperty(Object.defineProperty([], '0', { value: 'okay'.substring(0,2) }), '0', { value: 'not ok'.substring(4,6) })[0]", '"ok"'); 61 shouldBe("Object.defineProperty(Object.defineProperty([], '0', { value: true }), '0', { value: true })[0]", 'true'); 62 shouldBe("Object.defineProperty(Object.defineProperty([], '0', { value: false }), '0', { value: false })[0]", 'false'); 63 shouldBe("Object.defineProperty(Object.defineProperty([], '0', { value: null }), '0', { value: null })[0]", 'null'); 64 shouldBe("Object.defineProperty(Object.defineProperty([], '0', { value: undefined }), '0', { value: undefined })[0]", 'undefined'); 65 shouldBe("Object.defineProperty(Object.defineProperty([], '0', { value: Math }), '0', { value: Math })[0]", 'Math'); 66 // Reassigning the value is not okay if the value changes. 67 shouldThrow("Object.defineProperty(Object.defineProperty([], '0', { value: 1 }), '0', { value: 2 })[0]"); 68 shouldThrow("Object.defineProperty(Object.defineProperty([], '0', { value: 'okay' }), '0', { value: 'not ok' })[0]"); 69 shouldThrow("Object.defineProperty(Object.defineProperty([], '0', { value: true }), '0', { value: false })[0]"); 70 shouldThrow("Object.defineProperty(Object.defineProperty([], '0', { value: false }), '0', { value: true })[0]"); 71 shouldThrow("Object.defineProperty(Object.defineProperty([], '0', { value: Math }), '0', { value: Object })[0]"); 72 // Reassigning the value is not okay if the type changes. 73 shouldThrow("Object.defineProperty(Object.defineProperty([], '0', { value: null }), '0', { value: undefined })[0]"); 74 shouldThrow("Object.defineProperty(Object.defineProperty([], '0', { value: undefined }), '0', { value: null })[0]"); 75 76 Object.defineProperty(Array.prototype, "0", { set: function () { throw false; } }); 77 Object.defineProperty(Array.prototype, "1", { set: function () { throw false; } }); 78 var arrObj = [ , false ]; 79 Object.defineProperty(arrObj, "0", { set: function (x) { this.set = x === 42; } }); 80 shouldBeTrue("arrObj[0] = 42; arrObj.set;"); 81 shouldBeTrue("arrObj[1] = true; arrObj[1];"); 82 83 successfullyParsed = true; 84
