/// 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 ch15/15.4/15.4.4/15.4.4.15/15.4.4.15-5-26.js * @description Array.prototype.lastIndexOf - side effects produced by step 2 are visible when an exception occurs */ function testcase() { var stepTwoOccurs = false; var stepFiveOccurs = false; var obj = {}; Object.defineProperty(obj, "length", { get: function () { stepTwoOccurs = true; if (stepFiveOccurs) { throw new Error("Step 5 occurred out of order"); } return 20; }, configurable: true }); var fromIndex = { valueOf: function () { stepFiveOccurs = true; return 0; } }; try { Array.prototype.lastIndexOf.call(obj, undefined, fromIndex); return stepTwoOccurs && stepFiveOccurs; } catch (ex) { return false; } } runTestCase(testcase);