OLD | NEW |
(Empty) | |
| 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); |
OLD | NEW |