1 | // |
2 | // quick.cpp - a quick (CI) test for Boost.SmartPtr |
3 | // |
4 | // Copyright 2017 Peter Dimov |
5 | // |
6 | // Distributed under the Boost Software License, Version 1.0. |
7 | // |
8 | // See accompanying file LICENSE_1_0.txt or copy at |
9 | // http://www.boost.org/LICENSE_1_0.txt |
10 | // |
11 | |
12 | #include <boost/smart_ptr.hpp> |
13 | #include <boost/core/lightweight_test.hpp> |
14 | |
15 | class X |
16 | { |
17 | private: |
18 | |
19 | X( X const & ); |
20 | X & operator=( X const & ); |
21 | |
22 | public: |
23 | |
24 | static int instances; |
25 | |
26 | X() |
27 | { |
28 | ++instances; |
29 | } |
30 | |
31 | ~X() |
32 | { |
33 | --instances; |
34 | } |
35 | }; |
36 | |
37 | int X::instances = 0; |
38 | |
39 | int main() |
40 | { |
41 | { |
42 | boost::shared_ptr<X> p1( new X ); |
43 | BOOST_TEST_EQ( X::instances, 1 ); |
44 | BOOST_TEST_EQ( p1.use_count(), 1 ); |
45 | |
46 | boost::shared_ptr<X> p2( p1 ); |
47 | BOOST_TEST_EQ( p2.use_count(), 2 ); |
48 | |
49 | boost::weak_ptr<X> wp( p1 ); |
50 | BOOST_TEST_EQ( wp.use_count(), 2 ); |
51 | |
52 | p1.reset(); |
53 | BOOST_TEST_EQ( wp.use_count(), 1 ); |
54 | |
55 | p2.reset(); |
56 | BOOST_TEST_EQ( wp.use_count(), 0 ); |
57 | BOOST_TEST_EQ( X::instances, 0 ); |
58 | } |
59 | |
60 | { |
61 | boost::shared_ptr<X> p1 = boost::make_shared<X>(); |
62 | BOOST_TEST_EQ( X::instances, 1 ); |
63 | BOOST_TEST_EQ( p1.use_count(), 1 ); |
64 | |
65 | boost::shared_ptr<X> p2( p1 ); |
66 | BOOST_TEST_EQ( p2.use_count(), 2 ); |
67 | |
68 | boost::weak_ptr<X> wp( p1 ); |
69 | BOOST_TEST_EQ( wp.use_count(), 2 ); |
70 | |
71 | p1.reset(); |
72 | BOOST_TEST_EQ( wp.use_count(), 1 ); |
73 | |
74 | p2.reset(); |
75 | BOOST_TEST_EQ( wp.use_count(), 0 ); |
76 | BOOST_TEST_EQ( X::instances, 0 ); |
77 | } |
78 | |
79 | return boost::report_errors(); |
80 | } |
81 | |