15.2.3.6-4-251.js (1141B)
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: 15.2.3.6-4-251 6 description: > 7 Object.defineProperty - 'O' is an Array, 'name' is an array index 8 named property, 'name' is data property and 'desc' is data 9 descriptor, and the [[Configurable]] attribute value of 'name' is 10 false, test TypeError is thrown if the [[Writable]] attribute 11 value of 'name' is false, and the [[Value]] field of 'desc' and 12 the [[Value]] attribute value of 'name' are two objects which 13 refer to the different objects (15.4.5.1 step 4.c) 14 includes: [propertyHelper.js] 15 ---*/ 16 17 var arrObj = []; 18 var obj = { 19 length: 10 20 }; 21 22 Object.defineProperty(arrObj, "1", { 23 value: obj 24 }); 25 26 try { 27 Object.defineProperty(arrObj, "1", { 28 value: {} 29 }); 30 throw new Test262Error("Expected an exception."); 31 } catch (e) { 32 if (!(e instanceof TypeError)) { 33 throw new Test262Error("Expected TypeError, got " + e); 34 } 35 } 36 37 verifyProperty(arrObj, "1", { 38 value: obj, 39 writable: false, 40 enumerable: false, 41 configurable: false, 42 }); 43 44 reportCompare(0, 0);