Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 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]; |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 29 | assertEquals(0, a.length = 0); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 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]; |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 38 | assertEquals(2, a.length = 2); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 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); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 53 | assertEquals(0, a.length = 0); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 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); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 68 | assertEquals(2000, a.length = 2000); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 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); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 94 | assertEquals(Math.pow(2,30) + 1, a.length = Math.pow(2,30)+1); // not a smi! |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 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(); |
Ben Murdoch | 257744e | 2011-11-30 15:57:28 +0000 | [diff] [blame] | 105 | assertEquals(Object(12), a.length = new Number(12)); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 106 | assertEquals(12, a.length); |
| 107 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 108 | Number.prototype.valueOf = function() { return 10; } |
| 109 | var n = new Number(100); |
| 110 | assertEquals(n, a.length = n); |
| 111 | assertEquals(10, a.length); |
| 112 | n.valueOf = function() { return 20; } |
| 113 | assertEquals(n, a.length = n); |
| 114 | assertEquals(20, a.length); |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 115 | |
| 116 | var o = { length: -23 }; |
| 117 | Array.prototype.pop.apply(o); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 118 | assertEquals(0, o.length); |
Steve Block | 6ded16b | 2010-05-10 14:33:55 +0100 | [diff] [blame] | 119 | |
| 120 | // Check case of compiled stubs. |
| 121 | var a = []; |
| 122 | for (var i = 0; i < 7; i++) { |
| 123 | assertEquals(3, a.length = 3); |
| 124 | |
| 125 | var t = 239; |
| 126 | t = a.length = 7; |
| 127 | assertEquals(7, t); |
| 128 | } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 129 | |
| 130 | (function () { |
| 131 | "use strict"; |
| 132 | var frozen_object = Object.freeze({__proto__:[]}); |
| 133 | assertThrows(function () { frozen_object.length = 10 }); |
| 134 | })(); |