hana/test/ext/std/pair/first_second.cpp
2017-01-07 14:14:18 -08:00

31 lines
759 B
C++

// Copyright Louis Dionne 2013-2017
// 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/assert.hpp>
#include <boost/hana/equal.hpp>
#include <boost/hana/ext/std/pair.hpp>
#include <boost/hana/first.hpp>
#include <boost/hana/second.hpp>
#include <laws/base.hpp>
#include <utility>
namespace hana = boost::hana;
using hana::test::ct_eq;
int main() {
// first
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::first(std::make_pair(ct_eq<0>{}, ct_eq<1>{})),
ct_eq<0>{}
));
// second
BOOST_HANA_CONSTANT_CHECK(hana::equal(
hana::second(std::make_pair(ct_eq<0>{}, ct_eq<1>{})),
ct_eq<1>{}
));
}