15.2.3.6-4-299.js (1083B)
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: 15.2.3.6-4-299 6 description: > 7 Object.defineProperty - 'O' is an Arguments object, 'name' is own 8 accessor property of 'O', test TypeError is thrown when updating 9 the [[Enumerable]] attribute value of 'name' which is defined as 10 non-configurable (10.6 [[DefineOwnProperty]] step 4) 11 includes: [propertyHelper.js] 12 ---*/ 13 14 (function() { 15 function getFunc() { 16 return 10; 17 } 18 Object.defineProperty(arguments, "0", { 19 get: getFunc, 20 enumerable: true, 21 configurable: false 22 }); 23 try { 24 Object.defineProperty(arguments, "0", { 25 enumerable: false 26 }); 27 throw new Test262Error("Expected an exception."); 28 } catch (e) { 29 verifyEqualTo(arguments, "0", getFunc()); 30 31 if (!(e instanceof TypeError)) { 32 throw new Test262Error("Expected TypeError, got " + e); 33 } 34 } 35 36 verifyProperty(arguments, "0", { 37 enumerable: true, 38 configurable: false, 39 }); 40 }(0, 1, 2)); 41 42 reportCompare(0, 0);