15.2.3.6-4-312.js (1108B)
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: 15.2.3.6-4-312 6 description: > 7 Object.defineProperty - 'O' is an Arguments object, 'name' is an 8 index named accessor property of 'O' but not defined in 9 [[ParameterMap]] of 'O', test TypeError is thrown when updating 10 the [[Configurable]] attribute value of 'name' which is not 11 configurable (10.6 [[DefineOwnProperty]] step 4) 12 includes: [propertyHelper.js] 13 ---*/ 14 15 (function() { 16 function getFunc() {} 17 Object.defineProperty(arguments, "0", { 18 get: getFunc, 19 enumerable: true, 20 configurable: false 21 }); 22 try { 23 Object.defineProperty(arguments, "0", { 24 configurable: true 25 }); 26 throw new Test262Error("Expected an exception."); 27 } catch (e) { 28 verifyEqualTo(arguments, "0", getFunc()); 29 30 if (!(e instanceof TypeError)) { 31 throw new Test262Error("Expected TypeError, got " + e); 32 } 33 } 34 35 verifyProperty(arguments, "0", { 36 enumerable: true, 37 configurable: false, 38 }); 39 }()); 40 41 reportCompare(0, 0);