15.2.3.6-4-294-1.js (1269B)
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: 15.2.3.6-4-294-1 6 description: > 7 Object.defineProperty - 'O' is an Arguments object of a function 8 that has formal parameters, 'name' is own data property of 'O' 9 which is also defined in [[ParameterMap]] of 'O', test TypeError 10 is thrown when updating the [[Writable]] attribute value of 'name' 11 which is defined as non-configurable (10.6 [[DefineOwnProperty]] 12 step 4 and 5b) 13 includes: [propertyHelper.js] 14 flags: [noStrict] 15 ---*/ 16 17 (function(a, b, c) { 18 Object.defineProperty(arguments, "0", { 19 value: 10, 20 writable: false, 21 enumerable: false, 22 configurable: false 23 }); 24 try { 25 Object.defineProperty(arguments, "0", { 26 writable: true 27 }); 28 throw new Test262Error("Expected an exception."); 29 } catch (e) { 30 31 if (!(e instanceof TypeError)) { 32 throw new Test262Error("Expected TypeError, got " + e); 33 } 34 35 if (a !== 10) { 36 throw new Test262Error('Expected "a === 10", actually ' + a); 37 } 38 } 39 40 verifyProperty(arguments, "0", { 41 value: 10, 42 writable: false, 43 enumerable: false, 44 configurable: false, 45 }); 46 }(0, 1, 2)); 47 48 reportCompare(0, 0);