The Tor Browser / file revision

 /// Copyright (c) 2012 Ecma International.  All rights reserved. 

 /// Ecma International makes this code available under the terms and conditions set

 /// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 

 /// "Use Terms").   Any redistribution of this code must retain the above 

 /// copyright and this notice and otherwise comply with the Use Terms.

 /**

  * @path ch13/13.2/13.2-17-1.js

  * @description Function Object has 'constructor' as its own property, it is not enumerable and does not invoke the setter defined on Function.prototype.constructor (Step 17)

  */

 function testcase() {

         var desc = Object.getOwnPropertyDescriptor(Object.prototype, "constructor");

         try {

             var getFunc = function () {

                 return 100;

             };

             var data = "data";

             var setFunc = function (value) {

                 data = value;

             };

             Object.defineProperty(Object.prototype, "constructor", {

                 get: getFunc,

                 set: setFunc,

                 configurable: true

             });

             var fun = function () {};

             var verifyValue = false;

             verifyValue = typeof fun.prototype.constructor === "function";

             var verifyEnumerable = false;

             for (var p in fun.prototype) {

                 if (p === "constructor" && fun.prototype.hasOwnProperty("constructor")) {

                     verifyEnumerable = true;

                 }

             }

             var verifyWritable = false;

             fun.prototype.constructor = 12;

             verifyWritable = (fun.prototype.constructor === 12);

             var verifyConfigurable = false;

             delete fun.prototype.constructor;

             verifyConfigurable = fun.hasOwnProperty("constructor");

             return verifyValue && verifyWritable && !verifyEnumerable && !verifyConfigurable && data === "data";

         } finally {

             Object.defineProperty(Object.prototype, "constructor", desc);

         }

     }

 runTestCase(testcase);