/// Copyright (c) 2012 Ecma International. All rights reserved. /// Ecma International makes this code available under the terms and conditions set /// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the /// "Use Terms"). Any redistribution of this code must retain the above /// copyright and this notice and otherwise comply with the Use Terms. /** * @path ch15/15.4/15.4.4/15.4.4.15/15.4.4.15-5-16.js * @description Array.prototype.lastIndexOf - value of 'fromIndex' is a string containing Infinity */ function testcase() { var arr = []; arr[Math.pow(2, 32) - 2] = true; // length is the max value of Uint type return arr.lastIndexOf(true, "Infinity") === (Math.pow(2, 32) - 2); } runTestCase(testcase);