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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/core/to.hpp> | |
7 | #include <boost/hana/equal.hpp> | |
8 | #include <boost/hana/for_each.hpp> | |
9 | #include <boost/hana/not.hpp> | |
10 | #include <boost/hana/not_equal.hpp> // for operator != | |
11 | #include <boost/hana/permutations.hpp> | |
12 | #include <boost/hana/set.hpp> | |
13 | #include <boost/hana/tuple.hpp> | |
14 | ||
15 | #include <laws/base.hpp> | |
16 | namespace hana = boost::hana; | |
17 | using hana::test::ct_eq; | |
18 | ||
19 | ||
20 | int main() { | |
21 | auto check = [](auto ...keys) { | |
22 | auto keys_set = hana::make_set(keys...); | |
23 | auto keys_tuple = hana::make_tuple(keys...); | |
24 | auto possible_arrangements = hana::permutations(keys_tuple); | |
25 | ||
26 | hana::for_each(possible_arrangements, [&](auto perm) { | |
27 | BOOST_HANA_CONSTANT_CHECK(hana::equal( | |
28 | hana::to_set(perm), | |
29 | keys_set | |
30 | )); | |
31 | }); | |
32 | ||
33 | BOOST_HANA_CONSTANT_CHECK(hana::not_(hana::equal( | |
34 | keys_set, | |
35 | hana::make_set(keys..., ct_eq<999>{}) | |
36 | ))); | |
37 | }; | |
38 | ||
39 | check(); | |
40 | check(ct_eq<0>{}); | |
41 | check(ct_eq<0>{}, ct_eq<1>{}); | |
42 | check(ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{}); | |
43 | ||
44 | // check operators | |
45 | BOOST_HANA_CONSTANT_CHECK( | |
46 | hana::make_set(ct_eq<0>{}) | |
47 | == | |
48 | hana::make_set(ct_eq<0>{}) | |
49 | ); | |
50 | ||
51 | BOOST_HANA_CONSTANT_CHECK( | |
52 | hana::make_set(ct_eq<0>{}) | |
53 | != | |
54 | hana::make_set(ct_eq<1>{}) | |
55 | ); | |
56 | } |