15.2.3.7-6-a-283.js (1088B)
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: 15.2.3.7-6-a-283 6 description: > 7 Object.defineProperties - 'O' is an Arguments object, 'P' is own 8 data property of 'O' which is also defined in [[ParameterMap]] of 9 'O', test TypeError is thrown when updating the [[Writable]] 10 attribute value of 'P' which is defined as non-configurable (10.6 11 [[DefineOwnProperty]] step 4) 12 includes: [propertyHelper.js] 13 ---*/ 14 15 16 var arg; 17 18 (function fun(a, b, c) { 19 arg = arguments; 20 }(0, 1, 2)); 21 22 Object.defineProperty(arg, "0", { 23 value: 0, 24 writable: false, 25 enumerable: false, 26 configurable: false 27 }); 28 29 try { 30 Object.defineProperties(arg, { 31 "0": { 32 writable: true 33 } 34 }); 35 36 throw new Test262Error("Expected an exception."); 37 } catch (e) { 38 if (!(e instanceof TypeError)) { 39 throw new Test262Error("Expected TypeError, got " + e); 40 } 41 } 42 43 verifyProperty(arg, "0", { 44 value: 0, 45 writable: false, 46 enumerable: false, 47 configurable: false, 48 }); 49 50 reportCompare(0, 0);