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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> | |
f67539c2 | 18 | #include <boost/core/lightweight_test.hpp> |
7c673cae FG |
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 | ||
92f5a8d4 | 42 | boost::weak_ptr<V> q4 = p->weak_from_this(); |
7c673cae FG |
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 | } |