15.2.3.6-4-295-1.js (1277B)
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: 15.2.3.6-4-295-1 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 [[Enumerable]] attribute value of 11 'name' which is defined as non-configurable (10.6 12 [[DefineOwnProperty]] step 4 and step 5b) 13 includes: [propertyHelper.js] 14 flags: [noStrict] 15 ---*/ 16 17 18 (function(a, b, c) { 19 Object.defineProperty(arguments, "0", { 20 value: 10, 21 writable: false, 22 enumerable: true, 23 configurable: false 24 }); 25 try { 26 Object.defineProperty(arguments, "0", { 27 enumerable: false 28 }); 29 throw new Test262Error("Expected an exception."); 30 } catch (e) { 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: true, 44 configurable: false, 45 }); 46 }(0, 1, 2)); 47 48 reportCompare(0, 0);