1// Copyright 2020 Peter Dimov
2// Distributed under the Boost Software License, Version 1.0.
3// https://www.boost.org/LICENSE_1_0.txt
4
5#include <boost/shared_ptr.hpp>
6#include <boost/weak_ptr.hpp>
7#include <boost/core/lightweight_test.hpp>
8
9int main()
10{
11 {
12 boost::shared_ptr<int> p1( new int );
13 boost::shared_ptr<int> p2( p1 );
14
15 BOOST_TEST( !p1.owner_before( p2 ) );
16 BOOST_TEST( !p2.owner_before( p1 ) );
17
18 boost::shared_ptr<int> p3( new int );
19
20 BOOST_TEST( p1.owner_before( p3 ) || p3.owner_before( p1 ) );
21
22 boost::shared_ptr<int> p4;
23 boost::shared_ptr<int> p5;
24
25 BOOST_TEST( !p4.owner_before( p5 ) );
26 BOOST_TEST( !p5.owner_before( p4 ) );
27
28 BOOST_TEST( p4.owner_before( p3 ) || p3.owner_before( p4 ) );
29
30 boost::shared_ptr<int> p6( static_cast<int*>(0) );
31
32 BOOST_TEST( p4.owner_before( p6 ) || p6.owner_before( p4 ) );
33
34 boost::shared_ptr<void> p7( p1 );
35
36 BOOST_TEST( !p1.owner_before( p7 ) );
37 BOOST_TEST( !p7.owner_before( p1 ) );
38
39 boost::shared_ptr<void> p8;
40
41 BOOST_TEST( p1.owner_before( p8 ) || p8.owner_before( p1 ) );
42
43 BOOST_TEST( !p4.owner_before( p8 ) );
44 BOOST_TEST( !p8.owner_before( p4 ) );
45
46 boost::weak_ptr<int> q1( p1 );
47
48 BOOST_TEST( !p1.owner_before( q1 ) );
49 BOOST_TEST( !q1.owner_before( p1 ) );
50
51 boost::weak_ptr<int> q2( p1 );
52
53 BOOST_TEST( !q1.owner_before( q2 ) );
54 BOOST_TEST( !q2.owner_before( q1 ) );
55
56 boost::weak_ptr<int> q3( p3 );
57
58 BOOST_TEST( p1.owner_before( q3 ) || q3.owner_before( p1 ) );
59 BOOST_TEST( q1.owner_before( q3 ) || q3.owner_before( q1 ) );
60
61 boost::weak_ptr<int> q4;
62
63 BOOST_TEST( !p4.owner_before( q4 ) );
64 BOOST_TEST( !q4.owner_before( p4 ) );
65
66 BOOST_TEST( q1.owner_before( q4 ) || q4.owner_before( q1 ) );
67
68 boost::weak_ptr<void> q5;
69
70 BOOST_TEST( !q4.owner_before( q5 ) );
71 BOOST_TEST( !q5.owner_before( q4 ) );
72
73 boost::weak_ptr<void> q7( p7 );
74
75 BOOST_TEST( !p1.owner_before( q7 ) );
76 BOOST_TEST( !q7.owner_before( p1 ) );
77
78 BOOST_TEST( !q1.owner_before( q7 ) );
79 BOOST_TEST( !q7.owner_before( q1 ) );
80
81 p1.reset();
82 p2.reset();
83 p3.reset();
84 p7.reset();
85
86 BOOST_TEST( q1.expired() );
87 BOOST_TEST( q2.expired() );
88 BOOST_TEST( q3.expired() );
89 BOOST_TEST( q7.expired() );
90
91 BOOST_TEST( !q1.owner_before( q2 ) );
92 BOOST_TEST( !q2.owner_before( q1 ) );
93
94 BOOST_TEST( !q1.owner_before( q7 ) );
95 BOOST_TEST( !q7.owner_before( q1 ) );
96
97 BOOST_TEST( q1.owner_before( q3 ) || q3.owner_before( q1 ) );
98
99 BOOST_TEST( q1.owner_before( q4 ) || q4.owner_before( q1 ) );
100 }
101
102 return boost::report_errors();
103}
104

source code of boost/libs/smart_ptr/test/sp_owner_before_test.cpp