15.2.3.6-4-299-1.js (1288B)
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: 15.2.3.6-4-299-1 6 description: > 7 Object.defineProperty - 'O' is an Arguments object of a function 8 that has formal parameters, 'name' is own accessor 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]] steps 4 and 5a) 13 includes: [propertyHelper.js] 14 ---*/ 15 16 (function(a, b, c) { 17 function getFunc() { 18 return 10; 19 } 20 Object.defineProperty(arguments, "0", { 21 get: getFunc, 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 (a !== 0) { 32 throw new Test262Error('Expected a === 0, actually ' + a); 33 } 34 verifyEqualTo(arguments, "0", getFunc()); 35 36 if (!(e instanceof TypeError)) { 37 throw new Test262Error("Expected TypeError, got " + e); 38 } 39 } 40 41 verifyProperty(arguments, "0", { 42 enumerable: true, 43 configurable: false, 44 }); 45 }(0, 1, 2)); 46 47 reportCompare(0, 0);