text: // Copyright (c) 2012 Ecma International.  All rights reserved.
  // This code is governed by the BSD license found in the LICENSE file.
  
  /*---
  es5id: 15.2.3.13-2-25
  description: >
      Object.isExtensible returns true if O is extensible and has a
      prototype that is not extensible
  ---*/
  
          var proto = {};
          Object.preventExtensions(proto);
        
          var ConstructFun = function () { };
          ConstructFun.prototype = proto;
  
          var obj = new ConstructFun();
  
  assert(Object.isExtensible(obj), 'Object.isExtensible(obj) !== true');
  