1// Copyright 2008 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 28var a = [0,1,2,3]; 29assertEquals(0, a.length = 0); 30 31assertEquals('undefined', typeof a[0]); 32assertEquals('undefined', typeof a[1]); 33assertEquals('undefined', typeof a[2]); 34assertEquals('undefined', typeof a[3]); 35 36 37var a = [0,1,2,3]; 38assertEquals(2, a.length = 2); 39 40assertEquals(0, a[0]); 41assertEquals(1, a[1]); 42assertEquals('undefined', typeof a[2]); 43assertEquals('undefined', typeof a[3]); 44 45 46var a = new Array(); 47a[0] = 0; 48a[1000] = 1000; 49a[1000000] = 1000000; 50a[2000000] = 2000000; 51 52assertEquals(2000001, a.length); 53assertEquals(0, a.length = 0); 54assertEquals(0, a.length); 55assertEquals('undefined', typeof a[0]); 56assertEquals('undefined', typeof a[1000]); 57assertEquals('undefined', typeof a[1000000]); 58assertEquals('undefined', typeof a[2000000]); 59 60 61var a = new Array(); 62a[0] = 0; 63a[1000] = 1000; 64a[1000000] = 1000000; 65a[2000000] = 2000000; 66 67assertEquals(2000001, a.length); 68assertEquals(2000, a.length = 2000); 69assertEquals(2000, a.length); 70assertEquals(0, a[0]); 71assertEquals(1000, a[1000]); 72assertEquals('undefined', typeof a[1000000]); 73assertEquals('undefined', typeof a[2000000]); 74 75 76var a = new Array(); 77a[Math.pow(2,31)-1] = 0; 78a[Math.pow(2,30)-1] = 0; 79assertEquals(Math.pow(2,31), a.length); 80 81 82var a = new Array(); 83a[0] = 0; 84a[1000] = 1000; 85a[Math.pow(2,30)-1] = Math.pow(2,30)-1; 86a[Math.pow(2,31)-1] = Math.pow(2,31)-1; 87a[Math.pow(2,32)-2] = Math.pow(2,32)-2; 88 89assertEquals(Math.pow(2,30)-1, a[Math.pow(2,30)-1]); 90assertEquals(Math.pow(2,31)-1, a[Math.pow(2,31)-1]); 91assertEquals(Math.pow(2,32)-2, a[Math.pow(2,32)-2]); 92 93assertEquals(Math.pow(2,32)-1, a.length); 94assertEquals(Math.pow(2,30) + 1, a.length = Math.pow(2,30)+1); // not a smi! 95assertEquals(Math.pow(2,30)+1, a.length); 96 97assertEquals(0, a[0]); 98assertEquals(1000, a[1000]); 99assertEquals(Math.pow(2,30)-1, a[Math.pow(2,30)-1]); 100assertEquals('undefined', typeof a[Math.pow(2,31)-1]); 101assertEquals('undefined', typeof a[Math.pow(2,32)-2], "top"); 102 103 104var a = new Array(); 105assertEquals(Object(12), a.length = new Number(12)); 106assertEquals(12, a.length); 107 108 109var o = { length: -23 }; 110Array.prototype.pop.apply(o); 111assertEquals(4294967272, o.length); 112 113// Check case of compiled stubs. 114var a = []; 115for (var i = 0; i < 7; i++) { 116 assertEquals(3, a.length = 3); 117 118 var t = 239; 119 t = a.length = 7; 120 assertEquals(7, t); 121} 122