/// 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 ch15/15.4/15.4.4/15.4.4.19/15.4.4.19-8-9.js * @description Array.prototype.map - modifications to length don't change number of iterations on an Array */ function testcase() { var called = 0; function callbackfn(val, idx, obj) { called += 1; return val > 10; } var arr = [9, , 12]; Object.defineProperty(arr, "1", { get: function () { arr.length = 2; return 8; }, configurable: true }); var testResult = arr.map(callbackfn); return testResult.length === 3 && called === 2 && typeof testResult[2] === "undefined"; } runTestCase(testcase);