1 | // Boost.Signals library |
2 | |
3 | // Copyright Douglas Gregor 2001-2006 |
4 | // Copyright Frank Mori Hess 2007 |
5 | // Use, modification and |
6 | // distribution is subject to the Boost Software License, Version |
7 | // 1.0. (See accompanying file LICENSE_1_0.txt or copy at |
8 | // http://www.boost.org/LICENSE_1_0.txt) |
9 | |
10 | // For more information, see http://www.boost.org |
11 | |
12 | #include <memory> |
13 | #include <boost/core/ref.hpp> |
14 | #include <boost/optional.hpp> |
15 | #include <boost/shared_ptr.hpp> |
16 | #include <boost/signals2.hpp> |
17 | #define BOOST_TEST_MODULE track_test |
18 | #include <boost/test/included/unit_test.hpp> |
19 | #include <boost/bind/bind.hpp> |
20 | |
21 | using namespace boost::placeholders; |
22 | |
23 | struct swallow { |
24 | typedef int result_type; |
25 | template<typename T> result_type operator()(const T*, int i) { return i; } |
26 | }; |
27 | |
28 | template<typename T> |
29 | struct max_or_default { |
30 | typedef T result_type; |
31 | |
32 | template<typename InputIterator> |
33 | T operator()(InputIterator first, InputIterator last) const |
34 | { |
35 | boost::optional<T> max; |
36 | for(; first != last; ++first) |
37 | { |
38 | T value = *first; |
39 | if(!max) |
40 | { |
41 | max = value; |
42 | }else if(value > *max) |
43 | { |
44 | max = value; |
45 | } |
46 | } |
47 | if(max) return *max; |
48 | else return T(); |
49 | } |
50 | }; |
51 | |
52 | static int myfunc(int i, double z) |
53 | { |
54 | return i; |
55 | } |
56 | |
57 | BOOST_AUTO_TEST_CASE(test_main) |
58 | { |
59 | typedef boost::signals2::signal<int (int), max_or_default<int> > sig_type; |
60 | sig_type s1; |
61 | boost::signals2::connection connection; |
62 | |
63 | // Test auto-disconnection |
64 | BOOST_CHECK(s1(5) == 0); |
65 | { |
66 | boost::shared_ptr<int> shorty(new int()); |
67 | s1.connect(slot: sig_type::slot_type(swallow(), shorty.get(), _1).track(tracked: shorty)); |
68 | BOOST_CHECK(s1(5) == 5); |
69 | } |
70 | BOOST_CHECK(s1(5) == 0); |
71 | |
72 | // Test auto-disconnection of slot before signal connection |
73 | { |
74 | boost::shared_ptr<int> shorty(new int(1)); |
75 | // doesn't work on gcc 3.3.5, it says: error: type specifier omitted for parameter `shorty' |
76 | // does work on gcc 4.1.2 |
77 | // sig_type::slot_type slot(swallow(), shorty.get(), _1); |
78 | swallow myswallow; |
79 | sig_type::slot_type slot(myswallow, shorty.get(), _1); |
80 | |
81 | slot.track(tracked: shorty); |
82 | shorty.reset(); |
83 | s1.connect(slot); |
84 | BOOST_CHECK(s1(5) == 0); |
85 | } |
86 | |
87 | // Test binding of a slot to another slot |
88 | { |
89 | boost::shared_ptr<int> shorty(new int(2)); |
90 | boost::signals2::slot<int (double)> other_slot(&myfunc, boost::cref(t: *shorty.get()), _1); |
91 | other_slot.track(tracked: shorty); |
92 | connection = s1.connect(slot: sig_type::slot_type(other_slot, 0.5).track(slot: other_slot)); |
93 | BOOST_CHECK(s1(3) == 2); |
94 | } |
95 | BOOST_CHECK(connection.connected() == false); |
96 | BOOST_CHECK(s1(3) == 0); |
97 | |
98 | // Test binding of a signal as a slot |
99 | { |
100 | sig_type s2; |
101 | s1.connect(slot: s2); |
102 | s2.connect(slot: sig_type::slot_type(&myfunc, _1, 0.7)); |
103 | BOOST_CHECK(s1(4) == 4); |
104 | } |
105 | BOOST_CHECK(s1(4) == 0); |
106 | |
107 | // Test tracking of null but not empty shared_ptr |
108 | BOOST_CHECK(s1(2) == 0); |
109 | { |
110 | boost::shared_ptr<int> shorty((int*)(0)); |
111 | s1.connect(slot: sig_type::slot_type(swallow(), shorty.get(), _1).track(tracked: shorty)); |
112 | BOOST_CHECK(s1(2) == 2); |
113 | } |
114 | BOOST_CHECK(s1(2) == 0); |
115 | |
116 | #ifndef BOOST_NO_CXX11_SMART_PTR |
117 | // Test tracking through std::shared_ptr/weak_ptr |
118 | BOOST_CHECK(s1(5) == 0); |
119 | { |
120 | std::shared_ptr<int> shorty(new int()); |
121 | s1.connect(slot: sig_type::slot_type(swallow(), shorty.get(), _1).track_foreign(tracked: shorty)); |
122 | BOOST_CHECK(s1(5) == 5); |
123 | } |
124 | BOOST_CHECK(s1(5) == 0); |
125 | { |
126 | std::shared_ptr<int> shorty(new int()); |
127 | s1.connect |
128 | ( |
129 | slot: sig_type::slot_type |
130 | ( |
131 | swallow(), |
132 | shorty.get(), |
133 | _1 |
134 | ).track_foreign |
135 | ( |
136 | tracked: std::weak_ptr<int>(shorty) |
137 | ) |
138 | ); |
139 | BOOST_CHECK(s1(5) == 5); |
140 | } |
141 | BOOST_CHECK(s1(5) == 0); |
142 | // make sure tracking foreign shared_ptr<const void> works |
143 | { |
144 | std::shared_ptr<const void> shorty(new int()); |
145 | s1.connect(slot: sig_type::slot_type(swallow(), shorty.get(), _1).track_foreign(tracked: shorty)); |
146 | BOOST_CHECK(s1(5) == 5); |
147 | } |
148 | { |
149 | std::shared_ptr<int> shorty(new int()); |
150 | s1.connect |
151 | ( |
152 | slot: sig_type::slot_type |
153 | ( |
154 | swallow(), |
155 | shorty.get(), |
156 | _1 |
157 | ).track_foreign |
158 | ( |
159 | tracked: std::weak_ptr<const void>(shorty) |
160 | ) |
161 | ); |
162 | BOOST_CHECK(s1(5) == 5); |
163 | } |
164 | BOOST_CHECK(s1(5) == 0); |
165 | BOOST_CHECK(s1(5) == 0); |
166 | #endif |
167 | } |
168 | |