1 // Copyright 2009 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 regression includes a number of cases where we did not correctly 29 // update a accessor property to a data property using Object.defineProperty. 30 31 var obj = { get value() {}, set value (v) { throw "Error";} }; 32 assertDoesNotThrow( 33 Object.defineProperty(obj, "value", 34 { value: 5, writable:true, configurable: true })); 35 var desc = Object.getOwnPropertyDescriptor(obj, "value"); 36 assertEquals(obj.value, 5); 37 assertTrue(desc.configurable); 38 assertTrue(desc.enumerable); 39 assertTrue(desc.writable); 40 assertEquals(desc.get, undefined); 41 assertEquals(desc.set, undefined); 42 43 44 var proto = { 45 get value() {}, 46 set value(v) { Object.defineProperty(this, "value", {value: v}); } 47 }; 48 49 var create = Object.create(proto); 50 51 assertEquals(create.value, undefined); 52 assertDoesNotThrow(create.value = 4); 53 assertEquals(create.value, 4); 54 55 // These tests where provided in bug 959, but are all related to the this issue. 56 var obj1 = {}; 57 Object.defineProperty(obj1, 'p', {get: undefined, set: undefined}); 58 assertTrue("p" in obj1); 59 desc = Object.getOwnPropertyDescriptor(obj1, "p"); 60 assertFalse(desc.configurable); 61 assertFalse(desc.enumerable); 62 assertEquals(desc.value, undefined); 63 assertEquals(desc.get, undefined); 64 assertEquals(desc.set, undefined); 65 66 67 var obj2 = { get p() {}}; 68 Object.defineProperty(obj2, 'p', {get: undefined}) 69 assertTrue("p" in obj2); 70 desc = Object.getOwnPropertyDescriptor(obj2, "p"); 71 assertTrue(desc.configurable); 72 assertTrue(desc.enumerable); 73 assertEquals(desc.value, undefined); 74 assertEquals(desc.get, undefined); 75 assertEquals(desc.set, undefined); 76
