/// 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 ch15/15.2/15.2.3/15.2.3.7/15.2.3.7-6-a-283.js * @description Object.defineProperties - 'O' is an Arguments object, 'P' is own data property of 'O' which is also defined in [[ParameterMap]] of 'O', test TypeError is thrown when updating the [[Writable]] attribute value of 'P' which is defined as non-configurable (10.6 [[DefineOwnProperty]] step 4) */ function testcase() { var arg; (function fun(a, b, c) { arg = arguments; }(0, 1, 2)); Object.defineProperty(arg, "0", { value: 0, writable: false, enumerable: false, configurable: false }); try { Object.defineProperties(arg, { "0": { writable: true } }); return false; } catch (e) { return (e instanceof TypeError) && dataPropertyAttributesAreCorrect(arg, "0", 0, false, false, false); } } runTestCase(testcase);