text: //////////////////////////////////////////////////////////////////////////////
  //
  // (C) Copyright Ion Gaztanaga 2013-2013. Distributed under the Boost
  // Software License, Version 1.0. (See accompanying file
  // LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
  //
  // See http://www.boost.org/libs/intrusive for documentation.
  //
  //////////////////////////////////////////////////////////////////////////////
  #include <boost/intrusive/pack_options.hpp>
  #include <boost/intrusive/detail/mpl.hpp>
  #include <boost/static_assert.hpp>
  
  struct empty_default{};
  
  using namespace boost::intrusive;
  
  //Test BOOST_INTRUSIVE_OPTION_CONSTANT
  BOOST_INTRUSIVE_OPTION_CONSTANT(incremental, bool, Enabled, is_incremental)
  const bool is_incremental_value = pack_options< empty_default, incremental<true> >::type::is_incremental;
  BOOST_STATIC_ASSERT(( is_incremental_value == true ));
  
  //Test BOOST_INTRUSIVE_OPTION_TYPE
  BOOST_INTRUSIVE_OPTION_TYPE(my_pointer, VoidPointer, typename boost::intrusive::detail::remove_pointer<VoidPointer>::type, my_pointer_type)
  typedef pack_options< empty_default, my_pointer<void*> >::type::my_pointer_type my_pointer_type;
  BOOST_STATIC_ASSERT(( boost::intrusive::detail::is_same<my_pointer_type, void>::value ));
  
  //test combination of BOOST_INTRUSIVE_OPTION_CONSTANT and BOOST_INTRUSIVE_OPTION_TYPE
  //    First add new options
  struct default_options
  {
     static const long long_constant = -3;
     typedef double *  double_typedef;
  };
  
  BOOST_INTRUSIVE_OPTION_CONSTANT(incremental2, bool, Enabled, is_incremental2)
  BOOST_INTRUSIVE_OPTION_TYPE(my_pointer2, VoidPointer, typename boost::intrusive::detail::add_pointer<VoidPointer>::type, my_pointer_type2)
  typedef pack_options < default_options
                       , incremental<false>
                       , my_pointer<float*>
                       , incremental2<true>
                       , my_pointer2<const char*>
                       >::type combined_type;
  BOOST_STATIC_ASSERT(( combined_type::is_incremental  == false ));
  BOOST_STATIC_ASSERT(( combined_type::is_incremental2 == true  ));
  BOOST_STATIC_ASSERT(( boost::intrusive::detail::is_same<combined_type::my_pointer_type,       float  >::value ));
  BOOST_STATIC_ASSERT(( boost::intrusive::detail::is_same<combined_type::my_pointer_type2, const char**>::value ));
  
  //test packing the default options leads to a default options type
  BOOST_STATIC_ASSERT(( boost::intrusive::detail::is_same<pack_options<default_options>::type, default_options>::value ));
  
  int main()
  {
     return 0;
  }
  