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b32b8144 | 1 | // Copyright Louis Dionne 2013-2017 |
7c673cae FG |
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/flatten.hpp> | |
8 | #include <boost/hana/optional.hpp> | |
9 | ||
10 | #include <laws/base.hpp> | |
11 | namespace hana = boost::hana; | |
12 | using hana::test::ct_eq; | |
13 | ||
14 | ||
15 | int main() { | |
16 | BOOST_HANA_CONSTANT_CHECK(hana::equal( | |
17 | hana::flatten(hana::nothing), | |
18 | hana::nothing | |
19 | )); | |
20 | BOOST_HANA_CONSTANT_CHECK(hana::equal( | |
21 | hana::flatten(hana::just(hana::nothing)), | |
22 | hana::nothing | |
23 | )); | |
24 | BOOST_HANA_CONSTANT_CHECK(hana::equal( | |
25 | hana::flatten(hana::just(hana::just(ct_eq<4>{}))), | |
26 | hana::just(ct_eq<4>{}) | |
27 | )); | |
28 | } |