/// 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-b-9.js * @description Array.prototype.map - deleting own property causes index property not to be visited on an Array */ function testcase() { function callbackfn(val, idx, obj) { if (idx === 1) { return false; } else { return true; } } var arr = [1, 2]; Object.defineProperty(arr, "1", { get: function () { return "6.99"; }, configurable: true }); Object.defineProperty(arr, "0", { get: function () { delete arr[1]; return 0; }, configurable: true }); var testResult = arr.map(callbackfn); return testResult[0] === true && typeof testResult[1] === "undefined"; } runTestCase(testcase);