15.2.3.6-4-95.js (972B)
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: 15.2.3.6-4-95 6 description: > 7 Object.defineProperty will throw TypeError when name.configurable 8 = false, name.writable = false, desc.value and name.value are two 9 objects which refer to the different objects (8.12.9 step 10 10.a.ii.1) 11 includes: [propertyHelper.js] 12 ---*/ 13 14 15 var obj = {}; 16 17 var obj1 = { 18 length: 10 19 }; 20 21 Object.defineProperty(obj, "foo", { 22 value: obj1, 23 writable: false, 24 configurable: false 25 }); 26 27 var obj2 = { 28 length: 20 29 }; 30 31 try { 32 Object.defineProperty(obj, "foo", { 33 value: obj2 34 }); 35 throw new Test262Error("Expected an exception."); 36 } catch (e) { 37 if (!(e instanceof TypeError)) { 38 throw new Test262Error("Expected TypeError, got " + e); 39 } 40 } 41 42 verifyProperty(obj, "foo", { 43 value: obj1, 44 writable: false, 45 enumerable: false, 46 configurable: false, 47 }); 48 49 reportCompare(0, 0);