1 // Boost.Signals library
2
3 // Copyright Douglas Gregor 2001-2006. Use, modification and
4 // distribution is subject to the Boost Software License, Version
5 // 1.0. (See accompanying file LICENSE_1_0.txt or copy at
6 // http://www.boost.org/LICENSE_1_0.txt)
7
8 // For more information, see http://www.boost.org
9
10 #include <boost/test/minimal.hpp>
11 #include <boost/signal.hpp>
12 #include <boost/bind.hpp>
13
14 struct short_lived : public boost::BOOST_SIGNALS_NAMESPACE::trackable {
~short_livedshort_lived15 ~short_lived() {}
16 };
17
18 struct swallow {
operator ()swallow19 template<typename T> int operator()(const T*, int i) { return i; }
20 };
21
22 template<typename T>
23 struct max_or_default {
24 typedef T result_type;
25
26 template<typename InputIterator>
operator ()max_or_default27 T operator()(InputIterator first, InputIterator last) const
28 {
29 if (first == last)
30 return T();
31
32 T max = *first++;
33 for (; first != last; ++first)
34 max = (*first > max)? *first : max;
35
36 return max;
37 }
38 };
39
test_main(int,char * [])40 int test_main(int, char*[])
41 {
42 typedef boost::signal1<int, int, max_or_default<int> > sig_type;
43 sig_type s1;
44
45 // Test auto-disconnection
46 BOOST_CHECK(s1(5) == 0);
47 {
48 short_lived shorty;
49 s1.connect(boost::bind<int>(swallow(), &shorty, _1));
50 BOOST_CHECK(s1(5) == 5);
51 }
52 BOOST_CHECK(s1(5) == 0);
53
54 // Test auto-disconnection of slot before signal connection
55 {
56 short_lived* shorty = new short_lived();
57
58 sig_type::slot_type slot(boost::bind<int>(swallow(), shorty, _1));
59 delete shorty;
60
61 BOOST_CHECK(s1(5) == 0);
62 }
63
64 return 0;
65 }
66