15.2.3.6-4-151.js (1046B)
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: 15.2.3.6-4-151 6 description: > 7 Object.defineProperty - 'O' is an Array, 'name' is the length 8 property of 'O', and the [[Value]] field of 'desc' is an Object 9 with an own toString method and an inherited valueOf method 10 (15.4.5.1 step 3.c), test that the inherited valueOf method is used 11 ---*/ 12 13 var arrObj = []; 14 var toStringAccessed = false; 15 var valueOfAccessed = false; 16 17 var proto = { 18 valueOf: function() { 19 valueOfAccessed = true; 20 return 2; 21 } 22 }; 23 24 var ConstructFun = function() {}; 25 ConstructFun.prototype = proto; 26 27 var child = new ConstructFun(); 28 child.toString = function() { 29 toStringAccessed = true; 30 return 3; 31 }; 32 33 Object.defineProperty(arrObj, "length", { 34 value: child 35 }); 36 37 assert.sameValue(arrObj.length, 2, 'arrObj.length'); 38 assert.sameValue(toStringAccessed, false, 'toStringAccessed'); 39 assert(valueOfAccessed, 'valueOfAccessed !== true'); 40 41 reportCompare(0, 0);