hana/test/ext/std/integer_sequence/comparable.cpp

/*
@copyright Louis Dionne 2014
Distributed under the Boost Software License, Version 1.0.
(See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
 */

#include <boost/hana/ext/std/integer_sequence.hpp>

#include <boost/hana/comparable/detail/laws.hpp>
#include <boost/hana/detail/assert.hpp>
#include <boost/hana/list/instance.hpp>

#include <utility>
using namespace boost::hana;


template <typename T, typename U>
void test() {
    // equal
    {
        BOOST_HANA_CONSTANT_ASSERT(equal(std::integer_sequence<T>{}, std::integer_sequence<U>{}));
        BOOST_HANA_CONSTANT_ASSERT(!equal(std::integer_sequence<T, 0>{}, std::integer_sequence<U>{}));
        BOOST_HANA_CONSTANT_ASSERT(!equal(std::integer_sequence<T>{}, std::integer_sequence<U, 0>{}));

        BOOST_HANA_CONSTANT_ASSERT(equal(std::integer_sequence<T, 0>{}, std::integer_sequence<U, 0>{}));
        BOOST_HANA_CONSTANT_ASSERT(!equal(std::integer_sequence<T, 0>{}, std::integer_sequence<U, 0, 1>{}));
        BOOST_HANA_CONSTANT_ASSERT(!equal(std::integer_sequence<T, 0, 2>{}, std::integer_sequence<U, 0, 1>{}));

        BOOST_HANA_CONSTANT_ASSERT(equal(std::integer_sequence<T, 0, 1, 2, 3>{}, std::integer_sequence<U, 0, 1, 2, 3>{}));
        BOOST_HANA_CONSTANT_ASSERT(!equal(std::integer_sequence<T, 0, 1, 2, 3, 5>{}, std::integer_sequence<U, 0, 1, 2, 3>{}));
    }

    // laws
    {
        BOOST_HANA_CONSTANT_ASSERT(
            Comparable::laws::check(
                list(
                    std::integer_sequence<T>{},
                    std::integer_sequence<U>{},

                    std::integer_sequence<T, 0>{},
                    std::integer_sequence<U, 0>{},

                    std::integer_sequence<T, 0, 1>{},
                    std::integer_sequence<U, 0, 1>{},

                    std::integer_sequence<T, 1, 0, 2>{},
                    std::integer_sequence<U, 1, 0, 2>{}
                )
            )
        );
    }
}

int main() {
    test<int, char>();
    test<int, int>();
    test<int, long>();
    test<int, unsigned long>();
}