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| 1 // Copyright 2012 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 // Flags: --allow-natives-syntax --fast-accessor-properties |
| 29 |
| 30 // Handy abbreviations. |
| 31 var dp = Object.defineProperty; |
| 32 var gop = Object.getOwnPropertyDescriptor; |
| 33 |
| 34 function getter() { return 111; } |
| 35 function setter(x) { print(222); } |
| 36 function anotherGetter() { return 333; } |
| 37 function anotherSetter(x) { print(444); } |
| 38 var obj1, obj2; |
| 39 |
| 40 // Two objects with the same getter. |
| 41 obj1 = {}; |
| 42 dp(obj1, "alpha", { get: getter }); |
| 43 obj2 = {}; |
| 44 dp(obj2, "alpha", { get: getter }); |
| 45 assertTrue(%HaveSameMap(obj1, obj2)); |
| 46 |
| 47 // Two objects with the same getter, oldskool. |
| 48 obj1 = {}; |
| 49 obj1.__defineGetter__("bravo", getter); |
| 50 assertEquals(getter, obj1.__lookupGetter__("bravo")); |
| 51 obj2 = {}; |
| 52 obj2.__defineGetter__("bravo", getter); |
| 53 assertEquals(getter, obj2.__lookupGetter__("bravo")); |
| 54 assertTrue(%HaveSameMap(obj1, obj2)); |
| 55 |
| 56 // Two objects with the same setter. |
| 57 obj1 = {}; |
| 58 dp(obj1, "charlie", { set: setter }); |
| 59 obj2 = {}; |
| 60 dp(obj2, "charlie", { set: setter }); |
| 61 assertTrue(%HaveSameMap(obj1, obj2)); |
| 62 |
| 63 // Two objects with the same setter, oldskool. |
| 64 obj1 = {}; |
| 65 obj1.__defineSetter__("delta", setter); |
| 66 assertEquals(setter, obj1.__lookupSetter__("delta")); |
| 67 obj2 = {}; |
| 68 obj2.__defineSetter__("delta", setter); |
| 69 assertEquals(setter, obj2.__lookupSetter__("delta")); |
| 70 assertTrue(%HaveSameMap(obj1, obj2)); |
| 71 |
| 72 // Two objects with the same getter and setter. |
| 73 obj1 = {}; |
| 74 dp(obj1, "foxtrot", { get: getter, set: setter }); |
| 75 obj2 = {}; |
| 76 dp(obj2, "foxtrot", { get: getter, set: setter }); |
| 77 assertTrue(%HaveSameMap(obj1, obj2)); |
| 78 |
| 79 // Two objects with the same getter and setter, set separately. |
| 80 obj1 = {}; |
| 81 dp(obj1, "golf", { get: getter, configurable: true }); |
| 82 dp(obj1, "golf", { set: setter, configurable: true }); |
| 83 obj2 = {}; |
| 84 dp(obj2, "golf", { get: getter, configurable: true }); |
| 85 dp(obj2, "golf", { set: setter, configurable: true }); |
| 86 assertTrue(%HaveSameMap(obj1, obj2)); |
| 87 |
| 88 // Two objects with the same getter and setter, set separately, oldskool. |
| 89 obj1 = {}; |
| 90 obj1.__defineGetter__("hotel", getter); |
| 91 obj1.__defineSetter__("hotel", setter); |
| 92 obj2 = {}; |
| 93 obj2.__defineGetter__("hotel", getter); |
| 94 obj2.__defineSetter__("hotel", setter); |
| 95 assertTrue(%HaveSameMap(obj1, obj2)); |
| 96 |
| 97 // Attribute-only change, shouldn't affect previous descriptor properties. |
| 98 obj1 = {}; |
| 99 dp(obj1, "india", { get: getter, configurable: true, enumerable: true }); |
| 100 assertEquals(getter, gop(obj1, "india").get); |
| 101 assertTrue(gop(obj1, "india").configurable); |
| 102 assertTrue(gop(obj1, "india").enumerable); |
| 103 dp(obj1, "india", { enumerable: false }); |
| 104 assertEquals(getter, gop(obj1, "india").get); |
| 105 assertTrue(gop(obj1, "india").configurable); |
| 106 assertFalse(gop(obj1, "india").enumerable); |
| 107 |
| 108 // Attribute-only change, shouldn't affect objects with previously shared maps. |
| 109 obj1 = {}; |
| 110 dp(obj1, "juliet", { set: setter, configurable: true, enumerable: false }); |
| 111 assertEquals(setter, gop(obj1, "juliet").set); |
| 112 assertTrue(gop(obj1, "juliet").configurable); |
| 113 assertFalse(gop(obj1, "juliet").enumerable); |
| 114 obj2 = {}; |
| 115 dp(obj2, "juliet", { set: setter, configurable: true, enumerable: false }); |
| 116 assertEquals(setter, gop(obj2, "juliet").set); |
| 117 assertTrue(gop(obj2, "juliet").configurable); |
| 118 assertFalse(gop(obj2, "juliet").enumerable); |
| 119 dp(obj1, "juliet", { set: setter, configurable: false, enumerable: true }); |
| 120 assertEquals(setter, gop(obj1, "juliet").set); |
| 121 assertFalse(gop(obj1, "juliet").configurable); |
| 122 assertTrue(gop(obj1, "juliet").enumerable); |
| 123 assertEquals(setter, gop(obj2, "juliet").set); |
| 124 assertTrue(gop(obj2, "juliet").configurable); |
| 125 assertFalse(gop(obj2, "juliet").enumerable); |
| 126 |
| 127 // Two objects with the different getters. |
| 128 obj1 = {}; |
| 129 dp(obj1, "kilo", { get: getter }); |
| 130 obj2 = {}; |
| 131 dp(obj2, "kilo", { get: anotherGetter }); |
| 132 assertEquals(getter, gop(obj1, "kilo").get); |
| 133 assertEquals(anotherGetter, gop(obj2, "kilo").get); |
| 134 assertFalse(%HaveSameMap(obj1, obj2)); |
| 135 |
| 136 // Two objects with the same getters and different setters. |
| 137 obj1 = {}; |
| 138 dp(obj1, "lima", { get: getter, set: setter }); |
| 139 obj2 = {}; |
| 140 dp(obj2, "lima", { get: getter, set: anotherSetter }); |
| 141 assertEquals(setter, gop(obj1, "lima").set); |
| 142 assertEquals(anotherSetter, gop(obj2, "lima").set); |
| 143 assertFalse(%HaveSameMap(obj1, obj2)); |
| 144 |
| 145 // Even 'undefined' is a kind of getter. |
| 146 obj1 = {}; |
| 147 dp(obj1, "mike", { get: undefined }); |
| 148 assertTrue("mike" in obj1); |
| 149 assertEquals(undefined, gop(obj1, "mike").get); |
| 150 assertEquals(undefined, obj1.__lookupGetter__("mike")); |
| 151 assertEquals(undefined, gop(obj1, "mike").set); |
| 152 assertEquals(undefined, obj1.__lookupSetter__("mike")); |
| 153 |
| 154 // Even 'undefined' is a kind of setter. |
| 155 obj1 = {}; |
| 156 dp(obj1, "november", { set: undefined }); |
| 157 assertTrue("november" in obj1); |
| 158 assertEquals(undefined, gop(obj1, "november").get); |
| 159 assertEquals(undefined, obj1.__lookupGetter__("november")); |
| 160 assertEquals(undefined, gop(obj1, "november").set); |
| 161 assertEquals(undefined, obj1.__lookupSetter__("november")); |
| 162 |
| 163 // Redefining a data property. |
| 164 obj1 = {}; |
| 165 obj1.oscar = 12345; |
| 166 dp(obj1, "oscar", { set: setter }); |
| 167 assertEquals(setter, gop(obj1, "oscar").set); |
| 168 |
| 169 // Re-adding the same getter/attributes pair. |
| 170 obj1 = {}; |
| 171 dp(obj1, "papa", { get: getter, configurable: true }); |
| 172 dp(obj1, "papa", { get: getter, set: setter, configurable: true }); |
| 173 assertEquals(getter, gop(obj1, "papa").get); |
| 174 assertEquals(setter, gop(obj1, "papa").set); |
| 175 assertTrue(gop(obj1, "papa").configurable); |
| 176 assertFalse(gop(obj1, "papa").enumerable); |
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