mp11/test/mp_front.cpp
2017-03-15 21:23:15 +02:00

44 lines
1.3 KiB
C++

// Copyright 2015 Peter Dimov.
//
// Distributed under the Boost Software License, Version 1.0.
//
// See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt
#include <boost/core/lightweight_test_trait.hpp>
#include <boost/mp11/list.hpp>
#include <type_traits>
#include <tuple>
#include <utility>
int main()
{
using boost::mp11::mp_list;
using boost::mp11::mp_front;
using boost::mp11::mp_first;
using L1 = mp_list<void>;
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_front<L1>, void>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_first<L1>, void>));
using L2 = mp_list<int[], void, float>;
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_front<L2>, int[]>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_first<L2>, int[]>));
using L3 = std::tuple<int>;
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_front<L3>, int>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_first<L3>, int>));
using L4 = std::pair<char, double>;
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_front<L4>, char>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_first<L4>, char>));
using L5 = std::add_const<void()>;
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_front<L5>, void()>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_first<L5>, void()>));
return boost::report_errors();
}