1
2 // Copyright 2015 Peter Dimov.
3 //
4 // Distributed under the Boost Software License, Version 1.0.
5 //
6 // See accompanying file LICENSE_1_0.txt or copy at
7 // http://www.boost.org/LICENSE_1_0.txt
8
9
10 #include <boost/mp11/algorithm.hpp>
11 #include <boost/mp11/list.hpp>
12 #include <boost/mp11/integral.hpp>
13 #include <boost/core/lightweight_test_trait.hpp>
14 #include <type_traits>
15 #include <tuple>
16 #include <utility>
17
18 struct X1 {};
19 struct X2 {};
20 struct X3 {};
21
main()22 int main()
23 {
24 using boost::mp11::mp_list;
25 using boost::mp11::mp_contains;
26 using boost::mp11::mp_true;
27 using boost::mp11::mp_false;
28
29 {
30 using L1 = mp_list<>;
31
32 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_contains<L1, void>, mp_false>));
33
34 using L2 = mp_list<X1, X2, X3, X2, X3, X3>;
35
36 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_contains<L2, void>, mp_false>));
37 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_contains<L2, X1>, mp_true>));
38 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_contains<L2, X2>, mp_true>));
39 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_contains<L2, X3>, mp_true>));
40 }
41
42 {
43 using L3 = std::tuple<>;
44
45 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_contains<L3, void>, mp_false>));
46
47 using L4 = std::tuple<X1, X2, X3, X2, X3, X3>;
48
49 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_contains<L4, void>, mp_false>));
50 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_contains<L4, X1>, mp_true>));
51 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_contains<L4, X2>, mp_true>));
52 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_contains<L4, X3>, mp_true>));
53 }
54
55 {
56 using L5 = std::pair<X1, X2>;
57
58 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_contains<L5, void>, mp_false>));
59 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_contains<L5, X1>, mp_true>));
60 BOOST_TEST_TRAIT_TRUE((std::is_same<mp_contains<L5, X2>, mp_true>));
61 }
62
63 return boost::report_errors();
64 }
65