Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1 | // Copyright 2010 the V8 project authors. All rights reserved. |
| 2 | // Redistribution and use in source and binary forms, with or without |
| 3 | // modification, are permitted provided that the following conditions are |
| 4 | // met: |
| 5 | // |
| 6 | // * Redistributions of source code must retain the above copyright |
| 7 | // notice, this list of conditions and the following disclaimer. |
| 8 | // * Redistributions in binary form must reproduce the above |
| 9 | // copyright notice, this list of conditions and the following |
| 10 | // disclaimer in the documentation and/or other materials provided |
| 11 | // with the distribution. |
| 12 | // * Neither the name of Google Inc. nor the names of its |
| 13 | // contributors may be used to endorse or promote products derived |
| 14 | // from this software without specific prior written permission. |
| 15 | // |
| 16 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 17 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 18 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 19 | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 20 | // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 21 | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 22 | // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 23 | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 24 | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 25 | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 26 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | |
| 28 | // This file only tests very simple descriptors that always have |
| 29 | // configurable, enumerable, and writable set to true. |
| 30 | // A range of more elaborate tests are performed in |
| 31 | // object-define-property.js |
| 32 | |
| 33 | // Flags: --stress-runs=5 |
| 34 | |
| 35 | function get() { return x; } |
| 36 | function set(x) { this.x = x; } |
| 37 | |
| 38 | var obj = {x: 1}; |
| 39 | obj.__defineGetter__("accessor", get); |
| 40 | obj.__defineSetter__("accessor", set); |
| 41 | var a = new Array(); |
| 42 | a[1] = 42; |
| 43 | obj[1] = 42; |
| 44 | |
| 45 | var descIsData = Object.getOwnPropertyDescriptor(obj, 'x'); |
| 46 | assertTrue(descIsData.enumerable); |
| 47 | assertTrue(descIsData.writable); |
| 48 | assertTrue(descIsData.configurable); |
| 49 | |
| 50 | var descIsAccessor = Object.getOwnPropertyDescriptor(obj, 'accessor'); |
| 51 | assertTrue(descIsAccessor.enumerable); |
| 52 | assertTrue(descIsAccessor.configurable); |
| 53 | assertTrue(descIsAccessor.get == get); |
| 54 | assertTrue(descIsAccessor.set == set); |
| 55 | |
| 56 | var descIsNotData = Object.getOwnPropertyDescriptor(obj, 'not-x'); |
| 57 | assertTrue(descIsNotData == undefined); |
| 58 | |
| 59 | var descIsNotAccessor = Object.getOwnPropertyDescriptor(obj, 'not-accessor'); |
| 60 | assertTrue(descIsNotAccessor == undefined); |
| 61 | |
| 62 | var descArray = Object.getOwnPropertyDescriptor(a, '1'); |
| 63 | assertTrue(descArray.enumerable); |
| 64 | assertTrue(descArray.configurable); |
| 65 | assertTrue(descArray.writable); |
| 66 | assertEquals(descArray.value, 42); |
| 67 | |
| 68 | var descObjectElement = Object.getOwnPropertyDescriptor(obj, '1'); |
| 69 | assertTrue(descObjectElement.enumerable); |
| 70 | assertTrue(descObjectElement.configurable); |
| 71 | assertTrue(descObjectElement.writable); |
| 72 | assertEquals(descObjectElement.value, 42); |
| 73 | |
| 74 | // String objects. |
| 75 | var a = new String('foobar'); |
| 76 | for (var i = 0; i < a.length; i++) { |
| 77 | var descStringObject = Object.getOwnPropertyDescriptor(a, i); |
| 78 | assertTrue(descStringObject.enumerable); |
| 79 | assertFalse(descStringObject.configurable); |
| 80 | assertFalse(descStringObject.writable); |
| 81 | assertEquals(descStringObject.value, a.substring(i, i+1)); |
| 82 | } |
| 83 | |
| 84 | // Support for additional attributes on string objects. |
| 85 | a.x = 42; |
| 86 | a[10] = 'foo'; |
| 87 | var descStringProperty = Object.getOwnPropertyDescriptor(a, 'x'); |
| 88 | assertTrue(descStringProperty.enumerable); |
| 89 | assertTrue(descStringProperty.configurable); |
| 90 | assertTrue(descStringProperty.writable); |
| 91 | assertEquals(descStringProperty.value, 42); |
| 92 | |
| 93 | var descStringElement = Object.getOwnPropertyDescriptor(a, '10'); |
| 94 | assertTrue(descStringElement.enumerable); |
| 95 | assertTrue(descStringElement.configurable); |
| 96 | assertTrue(descStringElement.writable); |
| 97 | assertEquals(descStringElement.value, 'foo'); |
| 98 | |
| 99 | // Test that elements in the prototype chain is not returned. |
| 100 | var proto = {}; |
| 101 | proto[10] = 42; |
| 102 | |
| 103 | var objWithProto = new Array(); |
| 104 | objWithProto.prototype = proto; |
| 105 | objWithProto[0] = 'bar'; |
| 106 | var descWithProto = Object.getOwnPropertyDescriptor(objWithProto, '10'); |
| 107 | assertEquals(undefined, descWithProto); |
| 108 | |
| 109 | // Test elements on global proxy object. |
| 110 | var global = (function() { return this; })(); |
| 111 | |
| 112 | global[42] = 42; |
| 113 | |
| 114 | function el_getter() { return 239; }; |
| 115 | function el_setter() {}; |
| 116 | Object.defineProperty(global, '239', {get: el_getter, set: el_setter}); |
| 117 | |
| 118 | var descRegularElement = Object.getOwnPropertyDescriptor(global, '42'); |
| 119 | assertEquals(42, descRegularElement.value); |
| 120 | |
| 121 | var descAccessorElement = Object.getOwnPropertyDescriptor(global, '239'); |
| 122 | assertEquals(el_getter, descAccessorElement.get); |
| 123 | assertEquals(el_setter, descAccessorElement.set); |