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/ext/std/integral_constant.hpp>
6
7 #include <boost/hana/tuple.hpp>
8 #include <boost/hana/value.hpp>
9
10 #include <laws/constant.hpp>
11
12 #include <type_traits>
13 namespace hana = boost::hana;
14
15
main()16 int main() {
17 // value
18 static_assert(hana::value(std::integral_constant<int, 0>{}) == 0, "");
19 static_assert(hana::value(std::integral_constant<int, 1>{}) == 1, "");
20 static_assert(hana::value(std::integral_constant<int, 3>{}) == 3, "");
21
22 // laws
23 hana::test::TestConstant<hana::ext::std::integral_constant_tag<int>>{
24 hana::make_tuple(
25 std::integral_constant<int, -10>{},
26 std::integral_constant<int, -2>{},
27 std::integral_constant<int, 0>{},
28 std::integral_constant<int, 1>{},
29 std::integral_constant<int, 3>{}
30 ),
31 hana::tuple_t<int, long, long long>
32 };
33 }
34