regress-687.js revision b0fe1620dcb4135ac3ab2d66ff93072373911299
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 31var obj = { get value() {}, set value (v) { throw "Error";} }; 32assertDoesNotThrow( 33 Object.defineProperty(obj, "value", 34 { value: 5, writable:true, configurable: true })); 35var desc = Object.getOwnPropertyDescriptor(obj, "value"); 36assertEquals(obj.value, 5); 37assertTrue(desc.configurable); 38assertTrue(desc.enumerable); 39assertTrue(desc.writable); 40assertEquals(desc.get, undefined); 41assertEquals(desc.set, undefined); 42 43 44var proto = { 45 get value() {}, 46 set value(v) { Object.defineProperty(this, "value", {value: v}); } 47}; 48 49var create = Object.create(proto); 50 51assertEquals(create.value, undefined); 52assertDoesNotThrow(create.value = 4); 53assertEquals(create.value, 4); 54 55// These tests where provided in bug 959, but are all related to the this issue. 56var obj1 = {}; 57Object.defineProperty(obj1, 'p', {get: undefined, set: undefined}); 58assertTrue("p" in obj1); 59desc = Object.getOwnPropertyDescriptor(obj1, "p"); 60assertFalse(desc.configurable); 61assertFalse(desc.enumerable); 62assertEquals(desc.value, undefined); 63assertEquals(desc.get, undefined); 64assertEquals(desc.set, undefined); 65 66 67var obj2 = { get p() {}}; 68Object.defineProperty(obj2, 'p', {get: undefined}) 69assertTrue("p" in obj2); 70desc = Object.getOwnPropertyDescriptor(obj2, "p"); 71assertTrue(desc.configurable); 72assertTrue(desc.enumerable); 73assertEquals(desc.value, undefined); 74assertEquals(desc.get, undefined); 75assertEquals(desc.set, undefined); 76