15.2.3.6-4-306.js (1079B)
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: 15.2.3.6-4-306 6 description: > 7 Object.defineProperty - 'O' is an Arguments object, 'name' is an 8 index named data property of 'O' but not defined in 9 [[ParameterMap]] of 'O', test TypeError is thrown when updating 10 the [[Writable]] attribute value of 'name' which is not 11 configurable (10.6 [[DefineOwnProperty]] step 4) 12 includes: [propertyHelper.js] 13 ---*/ 14 15 (function() { 16 Object.defineProperty(arguments, "0", { 17 value: 0, 18 writable: false, 19 enumerable: false, 20 configurable: false 21 }); 22 try { 23 Object.defineProperty(arguments, "0", { 24 writable: true 25 }); 26 throw new Test262Error("Expected an exception."); 27 } catch (e) { 28 if (!(e instanceof TypeError)) { 29 throw new Test262Error("Expected TypeError, got " + e); 30 } 31 } 32 33 verifyProperty(arguments, "0", { 34 value: 0, 35 writable: false, 36 enumerable: false, 37 configurable: false, 38 }); 39 }()); 40 41 reportCompare(0, 0);