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

/*
@copyright Louis Dionne 2015
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/assert.hpp>
#include <boost/hana/tuple.hpp>

#include <laws/comparable.hpp>

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


using T = int;
using U = long long;

int main() {
    //////////////////////////////////////////////////////////////////////////
    // Setup for the laws below
    //////////////////////////////////////////////////////////////////////////
    auto sequences = make<Tuple>(
        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>{}
    );

    //////////////////////////////////////////////////////////////////////////
    // Comparable
    //////////////////////////////////////////////////////////////////////////
    {
        // equal
        {
            BOOST_HANA_CONSTANT_CHECK(equal(
                std::integer_sequence<T>{},
                std::integer_sequence<U>{}
            ));
            BOOST_HANA_CONSTANT_CHECK(not_(equal(
                std::integer_sequence<T, 0>{},
                std::integer_sequence<U>{}
            )));
            BOOST_HANA_CONSTANT_CHECK(not_(equal(
                std::integer_sequence<T>{},
                std::integer_sequence<U, 0>{}
            )));

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

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

        // laws
        test::TestComparable<ext::std::IntegerSequence>{sequences};
    }
}