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 28function Hash() { 29 for (var i = 0; i < 100; i++) { 30 this['a' + i] = i; 31 } 32 33 delete this.a50; // Ensure it's a normal object. 34} 35 36Hash.prototype.m = function() { 37 return 1; 38}; 39 40var h = new Hash(); 41 42for (var i = 1; i < 100; i++) { 43 if (i == 50) { 44 h.m = function() { 45 return 2; 46 }; 47 } else if (i == 70) { 48 delete h.m; 49 } 50 assertEquals(i < 50 || i >= 70 ? 1 : 2, h.m()); 51} 52 53 54var nonsymbol = 'wwwww '.split(' ')[0]; 55Hash.prototype.wwwww = Hash.prototype.m; 56 57for (var i = 1; i < 100; i++) { 58 if (i == 50) { 59 h[nonsymbol] = function() { 60 return 2; 61 }; 62 } else if (i == 70) { 63 delete h[nonsymbol]; 64 } 65 assertEquals(i < 50 || i >= 70 ? 1 : 2, h.wwwww()); 66} 67