| 1 | #include <boost/config.hpp> |
|---|---|
| 2 | |
| 3 | // |
| 4 | // weak_from_this_test.cpp |
| 5 | // |
| 6 | // Copyright (c) 2002, 2003, 2015 Peter Dimov |
| 7 | // |
| 8 | // Distributed under the Boost Software License, Version 1.0. |
| 9 | // |
| 10 | // See accompanying file LICENSE_1_0.txt or copy at |
| 11 | // http://www.boost.org/LICENSE_1_0.txt |
| 12 | // |
| 13 | |
| 14 | |
| 15 | #include <boost/enable_shared_from_this.hpp> |
| 16 | #include <boost/shared_ptr.hpp> |
| 17 | #include <boost/weak_ptr.hpp> |
| 18 | #include <boost/core/lightweight_test.hpp> |
| 19 | |
| 20 | class V: public boost::enable_shared_from_this<V> |
| 21 | { |
| 22 | }; |
| 23 | |
| 24 | void test() |
| 25 | { |
| 26 | boost::shared_ptr<V> p( new V ); |
| 27 | |
| 28 | boost::weak_ptr<V> q = p; |
| 29 | BOOST_TEST( !q.expired() ); |
| 30 | |
| 31 | boost::weak_ptr<V> q2 = p->weak_from_this(); |
| 32 | BOOST_TEST( !q2.expired() ); |
| 33 | BOOST_TEST( !(q < q2) && !(q2 < q) ); |
| 34 | |
| 35 | V v2( *p ); |
| 36 | |
| 37 | boost::weak_ptr<V> q3 = v2.weak_from_this(); |
| 38 | BOOST_TEST( q3.expired() ); |
| 39 | |
| 40 | *p = V(); |
| 41 | |
| 42 | boost::weak_ptr<V> q4 = p->weak_from_this(); |
| 43 | BOOST_TEST( !q4.expired() ); |
| 44 | BOOST_TEST( !(q < q4) && !(q4 < q) ); |
| 45 | BOOST_TEST( !(q2 < q4) && !(q4 < q2) ); |
| 46 | } |
| 47 | |
| 48 | int main() |
| 49 | { |
| 50 | test(); |
| 51 | return boost::report_errors(); |
| 52 | } |
| 53 |