multi_index/test/test_serialization.cpp

/* Boost.MultiIndex test for serialization.
 *
 * Copyright 2003-2005 Joaquín M López Muñoz.
 * 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/multi_index for library home page.
 */

#include "test_serialization.hpp"

#include <boost/config.hpp> /* keep it first to prevent nasty warns in MSVC */
#include <boost/archive/text_oarchive.hpp>
#include <boost/archive/text_iarchive.hpp>
#include "pre_multi_index.hpp"
#include <boost/multi_index_container.hpp>
#include <boost/multi_index/ordered_index.hpp>
#include <boost/multi_index/sequenced_index.hpp>
#include <boost/multi_index/key_extractors.hpp>
#include <boost/noncopyable.hpp>
#include <boost/test/test_tools.hpp>
#include <sstream>
#include <string>
#include "pair_of_ints.hpp"

using namespace boost::multi_index;

template<int N>
struct all_indices_equal_helper
{
  template<class MultiIndexContainer>
  static bool compare(
    const MultiIndexContainer& m1,const MultiIndexContainer& m2)
  {
    if(!(get<N>(m1)==get<N>(m2))){
      return false;
    }
    return all_indices_equal_helper<N-1>::compare(m1,m2);
  }
};

template<>
struct all_indices_equal_helper<0>
{
  template<class MultiIndexContainer>
  static bool compare(
    const MultiIndexContainer& m1,const MultiIndexContainer& m2)
  {
    return true;
  }
};

template<class MultiIndexContainer>
bool all_indices_equal(
  const MultiIndexContainer& m1,const MultiIndexContainer& m2)
{
  BOOST_STATIC_CONSTANT(int,
    N=boost::mpl::size<
    BOOST_DEDUCED_TYPENAME MultiIndexContainer::index_type_list>::type::value);

  return all_indices_equal_helper<N-1>::compare(m1,m2);
}

template<class MultiIndexContainer>
void test_serialization(const MultiIndexContainer& m)
{
  typedef typename MultiIndexContainer::iterator       iterator;
  typedef typename MultiIndexContainer::const_iterator const_iterator;

  std::ostringstream oss;
  {
    boost::archive::text_oarchive oa(oss);
    oa<<boost::serialization::make_nvp("container",m);

    for(const_iterator it=m.begin(),it_end=m.end();it!=it_end;++it){
      oa<<it;
    }
    oa<<m.end();
  }

  MultiIndexContainer m2;
  std::istringstream iss(oss.str());
  boost::archive::text_iarchive ia(iss);
  ia>>boost::serialization::make_nvp("container",m2);
  BOOST_CHECK(all_indices_equal(m,m2));

  for(iterator it=m2.begin(),it_end=m2.end();it!=it_end;++it){
    iterator it2;
    ia>>it2;
    BOOST_CHECK(it==it2);

    /* exercise safe mode with this (unchecked) iterator */
    BOOST_CHECK(*it==*it2);
    m2.erase(it,it2);
    m2.erase(it2,it2);
    m2.erase(it2,it);
    iterator it3(++it2);
    iterator it4;
    it4=--it2;
    BOOST_CHECK(it==it4);
    BOOST_CHECK(it==project<0>(m2,it4));
  }
  iterator it2;
  ia>>it2;
  BOOST_CHECK(m2.end()==it2);
  BOOST_CHECK(m2.end()==project<0>(m2,it2));
}

struct container_holder
{
  typedef multi_index_container<
    int,
    indexed_by<
      sequenced<>
    >
  > multi_index_t;

  container_holder(const multi_index_t& m_):m(m_){}

  bool operator==(const container_holder& x)const
  {
    return m==x.m;
  }

  multi_index_t m;

private:
  friend class boost::serialization::access;

  template<class Archive>
  void serialize(Archive& ar,const unsigned int)
  {
    ar&boost::serialization::make_nvp("container",m);
  }
};

#if defined(BOOST_NO_ARGUMENT_DEPENDENT_LOOKUP)
namespace boost{
namespace serialization{
#endif

template<class Archive>
inline void load_construct_data(
 Archive& ar,container_holder* p,const unsigned int)
{
  ::new(p)container_holder(container_holder::multi_index_t());
}

#if defined(BOOST_NO_ARGUMENT_DEPENDENT_LOOKUP)
} /* namespace serialization */
} /* namespace boost */
#endif

void test_serialization()
{
  {
    typedef multi_index_container<
      int,
      indexed_by<
        sequenced<>,
        sequenced<>
      >
    > multi_index_t;

    multi_index_t m;
    for(int i=0;i<100;++i)m.push_back(i);
    m.reverse();
    test_serialization(m);

    m.clear();
    for(int j=50;j<100;++j)m.push_back(j);
    for(int k=0;k<50;++k)m.push_back(k);
    m.sort();
    test_serialization(m);
  }
  {
    typedef multi_index_container<
      int,
      indexed_by<
        sequenced<>,
        ordered_non_unique<identity<int> >
      >
    > multi_index_t;

    multi_index_t m;
    for(int i=0;i<100;++i){
      m.push_back(i);
      m.push_back(i);
      m.push_back(i);
    }
    m.reverse();
    test_serialization(m);
  }
  {
    typedef multi_index_container<
      pair_of_ints,
      indexed_by<
        ordered_unique<
          BOOST_MULTI_INDEX_MEMBER(pair_of_ints,int,first)
        >,
        ordered_non_unique<
          BOOST_MULTI_INDEX_MEMBER(pair_of_ints,int,second)
        >,
        sequenced<>
      >
    > multi_index_t;

    multi_index_t m;
    test_serialization(m);

    m.insert(pair_of_ints(4,0));
    test_serialization(m);

    m.insert(pair_of_ints(3,1));
    m.insert(pair_of_ints(2,1));
    test_serialization(m);

    m.insert(pair_of_ints(1,1));
    test_serialization(m);

    m.insert(pair_of_ints(0,0));
    test_serialization(m);

    m.insert(pair_of_ints(5,1));
    m.insert(pair_of_ints(7,1));
    m.insert(pair_of_ints(6,1));
    test_serialization(m);
    
    m.insert(pair_of_ints(8,1));
    m.insert(pair_of_ints(9,1));
    m.insert(pair_of_ints(12,1));
    m.insert(pair_of_ints(11,1));
    m.insert(pair_of_ints(10,1));
    test_serialization(m);
  }
  {
    typedef multi_index_container<
      container_holder,
      indexed_by<
        sequenced<>
      >
    > multi_index_t;

    multi_index_t m;
    container_holder::multi_index_t c1,c2;
    for(int i=0;i<100;++i)c1.push_back(i);
    for(int j=100;j<200;++j)c2.push_back(j);
    m.push_back(container_holder(c1));
    m.push_back(container_holder(c2));
    test_serialization(m); 
  }
}