/// 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-12.js * @description Array.prototype.map - deleting own property with prototype property causes prototype index property to be visited on an Array-like object */ function testcase() { function callbackfn(val, idx, obj) { if (idx === 1 && val === 3) { return false; } else { return true; } } var obj = { 0: 0, 1: 1, 2: 2, length: 10 }; Object.defineProperty(obj, "0", { get: function () { delete obj[1]; return 0; }, configurable: true }); try { Object.prototype[1] = 3; var testResult = Array.prototype.map.call(obj, callbackfn); return testResult[1] === false; } finally { delete Object.prototype[1]; } } runTestCase(testcase);