| #include <boost/config.hpp> |
| |
| // |
| // weak_from_this_test.cpp |
| // |
| // Copyright (c) 2002, 2003, 2015 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/enable_shared_from_this.hpp> |
| #include <boost/shared_ptr.hpp> |
| #include <boost/weak_ptr.hpp> |
| #include <boost/detail/lightweight_test.hpp> |
| |
| class V: public boost::enable_shared_from_this<V> |
| { |
| }; |
| |
| void test() |
| { |
| boost::shared_ptr<V> p( new V ); |
| |
| boost::weak_ptr<V> q = p; |
| BOOST_TEST( !q.expired() ); |
| |
| boost::weak_ptr<V> q2 = p->weak_from_this(); |
| BOOST_TEST( !q2.expired() ); |
| BOOST_TEST( !(q < q2) && !(q2 < q) ); |
| |
| V v2( *p ); |
| |
| boost::weak_ptr<V> q3 = v2.weak_from_this(); |
| BOOST_TEST( q3.expired() ); |
| |
| *p = V(); |
| |
| boost::weak_ptr<V> q4 = p->shared_from_this(); |
| BOOST_TEST( !q4.expired() ); |
| BOOST_TEST( !(q < q4) && !(q4 < q) ); |
| BOOST_TEST( !(q2 < q4) && !(q4 < q2) ); |
| } |
| |
| int main() |
| { |
| test(); |
| return boost::report_errors(); |
| } |