15.2.3.7-6-a-289.js (1130B)
1 // Copyright (c) 2012 Ecma International. All rights reserved. 2 // This code is governed by the BSD license found in the LICENSE file. 3 4 /*--- 5 es5id: 15.2.3.7-6-a-289 6 description: > 7 Object.defineProperties - 'O' is an Arguments object, 'P' is own 8 accessor property of 'O' which is also defined in [[ParameterMap]] 9 of 'O', test TypeError is thrown when updating the 10 [[Configurable]] attribute value of 'P' which is defined as 11 non-configurable (10.6 [[DefineOwnProperty]] step 4) 12 includes: [propertyHelper.js] 13 ---*/ 14 15 16 var arg; 17 18 (function fun(a, b, c) { 19 arg = arguments; 20 }(0, 1, 2)); 21 22 function get_func() { 23 return 0; 24 } 25 26 Object.defineProperty(arg, "0", { 27 get: get_func, 28 enumerable: true, 29 configurable: false 30 }); 31 32 try { 33 Object.defineProperties(arg, { 34 "0": { 35 configurable: true 36 } 37 }); 38 39 throw new Test262Error("Expected an exception."); 40 } catch (e) { 41 verifyEqualTo(arg, "0", get_func()); 42 43 if (!(e instanceof TypeError)) { 44 throw new Test262Error("Expected TypeError, got " + e); 45 } 46 } 47 48 verifyProperty(arg, "0", { 49 enumerable: true, 50 configurable: false, 51 }); 52 53 reportCompare(0, 0);