/// 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 ch15/15.4/15.4.4/15.4.4.14/15.4.4.14-9-a-9.js * @description Array.prototype.indexOf - properties can be added to prototype after current position are visited on an Array-like object */ function testcase() { var arr = { length: 2 }; Object.defineProperty(arr, "0", { get: function () { Object.defineProperty(Object.prototype, "1", { get: function () { return 6.99; }, configurable: true }); return 0; }, configurable: true }); try { return Array.prototype.indexOf.call(arr, 6.99) === 1; } finally { delete Object.prototype[1]; } } runTestCase(testcase);