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