JezK
Edit File: array-length.js
// Copyright 2008 the V8 project authors. All rights reserved. // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are // met: // // * Redistributions of source code must retain the above copyright // notice, this list of conditions and the following disclaimer. // * Redistributions in binary form must reproduce the above // copyright notice, this list of conditions and the following // disclaimer in the documentation and/or other materials provided // with the distribution. // * Neither the name of Google Inc. nor the names of its // contributors may be used to endorse or promote products derived // from this software without specific prior written permission. // // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. var a = [0,1,2,3]; assertEquals(0, a.length = 0); assertEquals('undefined', typeof a[0]); assertEquals('undefined', typeof a[1]); assertEquals('undefined', typeof a[2]); assertEquals('undefined', typeof a[3]); var a = [0,1,2,3]; assertEquals(2, a.length = 2); assertEquals(0, a[0]); assertEquals(1, a[1]); assertEquals('undefined', typeof a[2]); assertEquals('undefined', typeof a[3]); var a = new Array(); a[0] = 0; a[1000] = 1000; a[1000000] = 1000000; a[2000000] = 2000000; assertEquals(2000001, a.length); assertEquals(0, a.length = 0); assertEquals(0, a.length); assertEquals('undefined', typeof a[0]); assertEquals('undefined', typeof a[1000]); assertEquals('undefined', typeof a[1000000]); assertEquals('undefined', typeof a[2000000]); var a = new Array(); a[0] = 0; a[1000] = 1000; a[1000000] = 1000000; a[2000000] = 2000000; assertEquals(2000001, a.length); assertEquals(2000, a.length = 2000); assertEquals(2000, a.length); assertEquals(0, a[0]); assertEquals(1000, a[1000]); assertEquals('undefined', typeof a[1000000]); assertEquals('undefined', typeof a[2000000]); var a = new Array(); a[Math.pow(2,31)-1] = 0; a[Math.pow(2,30)-1] = 0; assertEquals(Math.pow(2,31), a.length); var a = new Array(); a[0] = 0; a[1000] = 1000; a[Math.pow(2,30)-1] = Math.pow(2,30)-1; a[Math.pow(2,31)-1] = Math.pow(2,31)-1; a[Math.pow(2,32)-2] = Math.pow(2,32)-2; assertEquals(Math.pow(2,30)-1, a[Math.pow(2,30)-1]); assertEquals(Math.pow(2,31)-1, a[Math.pow(2,31)-1]); assertEquals(Math.pow(2,32)-2, a[Math.pow(2,32)-2]); assertEquals(Math.pow(2,32)-1, a.length); assertEquals(Math.pow(2,30) + 1, a.length = Math.pow(2,30)+1); // not a smi! assertEquals(Math.pow(2,30)+1, a.length); assertEquals(0, a[0]); assertEquals(1000, a[1000]); assertEquals(Math.pow(2,30)-1, a[Math.pow(2,30)-1]); assertEquals('undefined', typeof a[Math.pow(2,31)-1]); assertEquals('undefined', typeof a[Math.pow(2,32)-2], "top"); var a = new Array(); assertEquals(Object(12), a.length = new Number(12)); assertEquals(12, a.length); var o = { length: -23 }; Array.prototype.pop.apply(o); assertEquals(4294967272, o.length); // Check case of compiled stubs. var a = []; for (var i = 0; i < 7; i++) { assertEquals(3, a.length = 3); var t = 239; t = a.length = 7; assertEquals(7, t); }