2 // weak_ptr_move_test.cpp
4 // Copyright (c) 2007 Peter Dimov
6 // Distributed under the Boost Software License, Version 1.0.
7 // See accompanying file LICENSE_1_0.txt or copy at
8 // http://www.boost.org/LICENSE_1_0.txt
11 #include <boost/weak_ptr.hpp>
12 #include <boost/detail/lightweight_test.hpp>
15 #if !defined( BOOST_NO_CXX11_RVALUE_REFERENCES )
19 static long instances;
34 X & operator=( X const & );
37 long X::instances = 0;
41 BOOST_TEST( X::instances == 0 );
44 boost::shared_ptr<X> p_( new X );
45 boost::weak_ptr<X> p( p_ );
46 BOOST_TEST( X::instances == 1 );
47 BOOST_TEST( p.use_count() == 1 );
49 boost::weak_ptr<X> p2( std::move( p ) );
50 BOOST_TEST( X::instances == 1 );
51 BOOST_TEST( p2.use_count() == 1 );
52 BOOST_TEST( p.expired() );
54 boost::weak_ptr<void> p3( std::move( p2 ) );
55 BOOST_TEST( X::instances == 1 );
56 BOOST_TEST( p3.use_count() == 1 );
57 BOOST_TEST( p2.expired() );
60 BOOST_TEST( X::instances == 0 );
61 BOOST_TEST( p3.expired() );
65 boost::shared_ptr<X> p_( new X );
66 boost::weak_ptr<X> p( p_ );
67 BOOST_TEST( X::instances == 1 );
68 BOOST_TEST( p.use_count() == 1 );
70 boost::weak_ptr<X> p2;
71 p2 = static_cast< boost::weak_ptr<X> && >( p );
72 BOOST_TEST( X::instances == 1 );
73 BOOST_TEST( p2.use_count() == 1 );
74 BOOST_TEST( p.expired() );
76 boost::weak_ptr<void> p3;
78 BOOST_TEST( X::instances == 1 );
79 BOOST_TEST( p3.use_count() == 1 );
80 BOOST_TEST( p2.expired() );
83 BOOST_TEST( X::instances == 0 );
84 BOOST_TEST( p3.expired() );
88 boost::shared_ptr<X> p_( new X );
89 boost::weak_ptr<X> p( p_ );
90 BOOST_TEST( X::instances == 1 );
91 BOOST_TEST( p.use_count() == 1 );
93 boost::shared_ptr<X> p_2( new X );
94 boost::weak_ptr<X> p2( p_2 );
95 BOOST_TEST( X::instances == 2 );
97 BOOST_TEST( X::instances == 2 );
98 BOOST_TEST( p2.use_count() == 1 );
99 BOOST_TEST( p.expired() );
100 BOOST_TEST( p2.lock() != p_2 );
102 boost::shared_ptr<void> p_3( new X );
103 boost::weak_ptr<void> p3( p_3 );
104 BOOST_TEST( X::instances == 3 );
105 p3 = std::move( p2 );
106 BOOST_TEST( X::instances == 3 );
107 BOOST_TEST( p3.use_count() == 1 );
108 BOOST_TEST( p2.expired() );
109 BOOST_TEST( p3.lock() != p_3 );
112 return boost::report_errors();
115 #else // defined( BOOST_NO_CXX11_RVALUE_REFERENCES )