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 // Tests that Object.defineProperty works correctly on array indices. 29 // Please see http://code.google.com/p/v8/issues/detail?id=619 for details. 30 31 var obj = {}; 32 obj[1] = 42; 33 assertEquals(42, obj[1]); 34 Object.defineProperty(obj, '1', {value:10, writable:false}); 35 assertEquals(10, obj[1]); 36 37 // We should not be able to override obj[1]. 38 obj[1] = 5; 39 assertEquals(10, obj[1]); 40 41 // Try on a range of numbers. 42 for(var i = 0; i < 1024; i++) { 43 obj[i] = 42; 44 } 45 46 for(var i = 0; i < 1024; i++) { 47 Object.defineProperty(obj, i, {value: i, writable:false}); 48 } 49 50 for(var i = 0; i < 1024; i++) { 51 assertEquals(i, obj[i]); 52 } 53 54 for(var i = 0; i < 1024; i++) { 55 obj[1] = 5; 56 } 57 58 for(var i = 0; i < 1024; i++) { 59 assertEquals(i, obj[i]); 60 } 61
