1 // Copyright Louis Dionne 2013-2017
2 // Distributed under the Boost Software License, Version 1.0.
3 // (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
4
5 #include <boost/hana/assert.hpp>
6 #include <boost/hana/equal.hpp>
7 #include <boost/hana/integral_constant.hpp>
8 #include <boost/hana/string.hpp>
9 #include <boost/hana/map.hpp>
10 #include <boost/hana/type.hpp>
11 #include <boost/hana/union.hpp>
12
13 #include <string>
14 namespace hana = boost::hana;
15 using namespace hana::literals;
16
17
18 static auto m1 = hana::make_map(
19 hana::make_pair(BOOST_HANA_STRING("key1"), hana::type_c<std::string>),
20 hana::make_pair(BOOST_HANA_STRING("key2"), hana::type_c<std::string>)
21 );
22
23 static auto m2 = hana::make_map(
24 hana::make_pair(BOOST_HANA_STRING("key3"), hana::type_c<std::string>),
25 hana::make_pair(BOOST_HANA_STRING("key4"), hana::type_c<std::string>),
26 hana::make_pair(BOOST_HANA_STRING("key5"), hana::type_c<std::string>)
27 );
28
29 BOOST_HANA_CONSTANT_CHECK(hana::union_(m1, m2) == hana::make_map(
30 hana::make_pair(BOOST_HANA_STRING("key1"), hana::type_c<std::string>),
31 hana::make_pair(BOOST_HANA_STRING("key2"), hana::type_c<std::string>),
32 hana::make_pair(BOOST_HANA_STRING("key3"), hana::type_c<std::string>),
33 hana::make_pair(BOOST_HANA_STRING("key4"), hana::type_c<std::string>),
34 hana::make_pair(BOOST_HANA_STRING("key5"), hana::type_c<std::string>)
35 ));
36
37 constexpr auto m3 = hana::make_map(
38 hana::make_pair(hana::type_c<int>, hana::int_c<1>),
39 hana::make_pair(hana::type_c<bool>, hana::bool_c<true>)
40 );
41
42 constexpr auto m4 = hana::make_map(
43 hana::make_pair(hana::type_c<char>, hana::char_c<'c'>),
44 hana::make_pair(hana::type_c<bool>, hana::bool_c<false>)
45 );
46
47 BOOST_HANA_CONSTANT_CHECK(hana::union_(m3, m4) == hana::make_map(
48 hana::make_pair(hana::type_c<int>, hana::int_c<1>),
49 hana::make_pair(hana::type_c<bool>, hana::bool_c<false>),
50 hana::make_pair(hana::type_c<char>, hana::char_c<'c'>)
51 ));
52
main()53 int main() { }
54