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/functional/always.hpp>
8#include <boost/hana/tuple.hpp>
9
10#include <laws/applicative.hpp>
11#include <laws/base.hpp>
12#include <laws/functor.hpp>
13#include <laws/monad.hpp>
14#include <laws/monad_plus.hpp>
15namespace hana = boost::hana;
16using hana::test::ct_eq;
17
18
19int main() {
20 auto eq_tuples = hana::make_tuple(
21 hana::make_tuple()
22 , hana::make_tuple(ct_eq<0>{})
23 , hana::make_tuple(ct_eq<0>{}, ct_eq<1>{})
24 , hana::make_tuple(ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{})
25 , hana::make_tuple(ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{})
26 , hana::make_tuple(ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{}, ct_eq<4>{})
27 , hana::make_tuple(ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{}, ct_eq<3>{}, ct_eq<4>{}, ct_eq<5>{})
28 );
29
30 auto eq_values = hana::make_tuple(
31 ct_eq<0>{},
32 ct_eq<2>{},
33 ct_eq<4>{}
34 );
35
36 auto predicates = hana::make_tuple(
37 hana::equal.to(ct_eq<0>{}),
38 hana::equal.to(ct_eq<2>{}),
39 hana::equal.to(ct_eq<4>{}),
40 hana::always(hana::true_c),
41 hana::always(hana::false_c)
42 );
43
44 auto nested_eqs = hana::make_tuple(
45 hana::make_tuple()
46 , hana::make_tuple(
47 hana::make_tuple(ct_eq<0>{})
48 )
49 , hana::make_tuple(
50 hana::make_tuple(ct_eq<0>{}),
51 hana::make_tuple(ct_eq<1>{}, ct_eq<2>{})
52 )
53 , hana::make_tuple(
54 hana::make_tuple(ct_eq<0>{}),
55 hana::make_tuple(ct_eq<1>{}, ct_eq<2>{}),
56 hana::make_tuple(ct_eq<3>{}, ct_eq<4>{})
57 )
58 );
59
60 hana::test::TestFunctor<hana::tuple_tag>{eq_tuples, eq_values};
61 hana::test::TestApplicative<hana::tuple_tag>{eq_tuples};
62 hana::test::TestMonad<hana::tuple_tag>{eq_tuples, nested_eqs};
63 hana::test::TestMonadPlus<hana::tuple_tag>{eq_tuples, predicates, eq_values};
64}
65

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