15.2.3.7-6-a-239.js (1035B)
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-239 6 description: > 7 Object.defineProperties - TypeError is thrown if 'O' is an Array, 8 'P' is an array index named property that already exists on 'O' is 9 data property with [[Configurable]], [[Writable]] false, 'desc' 10 is data descriptor, [[Value]] field of 'desc' and the [[Value]] 11 attribute value of 'P' are two booleans with different values 12 (15.4.5.1 step 4.c) 13 includes: [propertyHelper.js] 14 ---*/ 15 16 var arr = []; 17 18 Object.defineProperty(arr, "1", { 19 value: true 20 }); 21 22 try { 23 Object.defineProperties(arr, { 24 "1": { 25 value: false 26 } 27 }); 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 36 verifyProperty(arr, "1", { 37 value: true, 38 writable: false, 39 enumerable: false, 40 configurable: false, 41 }); 42 43 reportCompare(0, 0);