1// Copyright Louis Dionne 2013-2022
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/bool.hpp>
6#include <boost/hana/equal.hpp>
7#include <boost/hana/ext/std/tuple.hpp>
8#include <boost/hana/functional/always.hpp>
9#include <boost/hana/tuple.hpp>
10
11#include <laws/applicative.hpp>
12#include <laws/base.hpp>
13#include <laws/functor.hpp>
14#include <laws/monad.hpp>
15#include <laws/monad_plus.hpp>
16
17#include <tuple>
18namespace hana = boost::hana;
19using hana::test::ct_eq;
20
21
22int main() {
23 auto tuples = hana::make_tuple(
24 std::make_tuple()
25 , std::make_tuple(ct_eq<0>{})
26 , std::make_tuple(ct_eq<0>{}, ct_eq<1>{})
27 , std::make_tuple(ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{})
28 , std::make_tuple(ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{}, ct_eq<4>{})
29 );
30
31 auto values = hana::make_tuple(ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{});
32
33 auto nested_tuples = hana::make_tuple(
34 std::make_tuple()
35 , std::make_tuple(
36 std::make_tuple(ct_eq<0>{}))
37 , std::make_tuple(
38 std::make_tuple(ct_eq<0>{}),
39 std::make_tuple(ct_eq<1>{}, ct_eq<2>{}))
40 , std::make_tuple(
41 std::make_tuple(ct_eq<0>{}),
42 std::make_tuple(ct_eq<1>{}, ct_eq<2>{}),
43 std::make_tuple(ct_eq<3>{}, ct_eq<4>{}))
44 );
45
46 auto predicates = hana::make_tuple(
47 hana::equal.to(ct_eq<0>{}), hana::equal.to(ct_eq<1>{}), hana::equal.to(ct_eq<2>{}),
48 hana::always(hana::false_c), hana::always(hana::true_c)
49 );
50
51 hana::test::TestFunctor<hana::ext::std::tuple_tag>{tuples, values};
52 hana::test::TestApplicative<hana::ext::std::tuple_tag>{tuples};
53 hana::test::TestMonad<hana::ext::std::tuple_tag>{tuples, nested_tuples};
54 hana::test::TestMonadPlus<hana::ext::std::tuple_tag>{tuples, predicates, values};
55}
56

source code of boost/libs/hana/test/ext/std/tuple/laws.functor.cpp