//
//  make_shared_test.cpp
//
//  Copyright (c) 2007 Peter Dimov
//
// 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)
//

#include <boost/detail/lightweight_test.hpp>
#include <boost/make_shared.hpp>
#include <boost/shared_ptr.hpp>
#include <boost/weak_ptr.hpp>

class X
{
private:

    X( X const & );
    X & operator=( X const & );

public:

    static int instances;

    int v;

    explicit X( int a1 = 0, int a2 = 0, int a3 = 0, int a4 = 0 ): v( a1+a2+a3+a4 )
    {
        ++instances;
    }

    ~X()
    {
        --instances;
    }
};

int X::instances = 0;

int main()
{
    {
        boost::shared_ptr< int > pi = boost::make_shared< int >();

        BOOST_TEST( pi.get() != 0 );
        BOOST_TEST( *pi == 0 );
    }

    {
        boost::shared_ptr< int > pi = boost::allocate_shared< int >( std::allocator<int>() );

        BOOST_TEST( pi.get() != 0 );
        BOOST_TEST( *pi == 0 );
    }

    {
        boost::shared_ptr< int > pi = boost::make_shared< int >( 5 );

        BOOST_TEST( pi.get() != 0 );
        BOOST_TEST( *pi == 5 );
    }

    {
        boost::shared_ptr< int > pi = boost::allocate_shared< int >( std::allocator<int>(), 5 );

        BOOST_TEST( pi.get() != 0 );
        BOOST_TEST( *pi == 5 );
    }

    BOOST_TEST( X::instances == 0 );

    {
        boost::shared_ptr< X > pi = boost::make_shared< X >();
        boost::weak_ptr<X> wp( pi );

        BOOST_TEST( X::instances == 1 );
        BOOST_TEST( pi.get() != 0 );
        BOOST_TEST( pi->v == 0 );

        pi.reset();

        BOOST_TEST( X::instances == 0 );
    }


    {
        boost::shared_ptr< X > pi = boost::allocate_shared< X >( std::allocator<void>() );
        boost::weak_ptr<X> wp( pi );

        BOOST_TEST( X::instances == 1 );
        BOOST_TEST( pi.get() != 0 );
        BOOST_TEST( pi->v == 0 );

        pi.reset();

        BOOST_TEST( X::instances == 0 );
    }

    {
        boost::shared_ptr< X > pi = boost::make_shared< X >( 1 );
        boost::weak_ptr<X> wp( pi );

        BOOST_TEST( X::instances == 1 );
        BOOST_TEST( pi.get() != 0 );
        BOOST_TEST( pi->v == 1 );

        pi.reset();

        BOOST_TEST( X::instances == 0 );
    }

    {
        boost::shared_ptr< X > pi = boost::allocate_shared< X >( std::allocator<void>(), 1 );
        boost::weak_ptr<X> wp( pi );

        BOOST_TEST( X::instances == 1 );
        BOOST_TEST( pi.get() != 0 );
        BOOST_TEST( pi->v == 1 );

        pi.reset();

        BOOST_TEST( X::instances == 0 );
    }

    {
        boost::shared_ptr< X > pi = boost::make_shared< X >( 1, 2 );
        boost::weak_ptr<X> wp( pi );

        BOOST_TEST( X::instances == 1 );
        BOOST_TEST( pi.get() != 0 );
        BOOST_TEST( pi->v == 1+2 );

        pi.reset();

        BOOST_TEST( X::instances == 0 );
    }

    {
        boost::shared_ptr< X > pi = boost::allocate_shared< X >( std::allocator<void>(), 1, 2 );
        boost::weak_ptr<X> wp( pi );

        BOOST_TEST( X::instances == 1 );
        BOOST_TEST( pi.get() != 0 );
        BOOST_TEST( pi->v == 1+2 );

        pi.reset();

        BOOST_TEST( X::instances == 0 );
    }

    {
        boost::shared_ptr< X > pi = boost::make_shared< X >( 1, 2, 3 );
        boost::weak_ptr<X> wp( pi );

        BOOST_TEST( X::instances == 1 );
        BOOST_TEST( pi.get() != 0 );
        BOOST_TEST( pi->v == 1+2+3 );

        pi.reset();

        BOOST_TEST( X::instances == 0 );
    }

    {
        boost::shared_ptr< X > pi = boost::allocate_shared< X >( std::allocator<void>(), 1, 2, 3 );
        boost::weak_ptr<X> wp( pi );

        BOOST_TEST( X::instances == 1 );
        BOOST_TEST( pi.get() != 0 );
        BOOST_TEST( pi->v == 1+2+3 );

        pi.reset();

        BOOST_TEST( X::instances == 0 );
    }

    {
        boost::shared_ptr< X > pi = boost::make_shared< X >( 1, 2, 3, 4 );
        boost::weak_ptr<X> wp( pi );

        BOOST_TEST( X::instances == 1 );
        BOOST_TEST( pi.get() != 0 );
        BOOST_TEST( pi->v == 1+2+3+4 );

        pi.reset();

        BOOST_TEST( X::instances == 0 );
    }

    {
        boost::shared_ptr< X > pi = boost::allocate_shared< X >( std::allocator<void>(), 1, 2, 3, 4 );
        boost::weak_ptr<X> wp( pi );

        BOOST_TEST( X::instances == 1 );
        BOOST_TEST( pi.get() != 0 );
        BOOST_TEST( pi->v == 1+2+3+4 );

        pi.reset();

        BOOST_TEST( X::instances == 0 );
    }

    return boost::report_errors();
}