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hana/test/ext/std/tuple/functor/fmap.cpp
2014-08-05 10:37:54 -04:00

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/*
@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/tuple.hpp>
#include <boost/hana/detail/assert.hpp>
#include <boost/hana/detail/constexpr.hpp>
#include <boost/hana/integral.hpp>
#include <tuple>
using namespace boost::hana;
BOOST_HANA_CONSTEXPR_LAMBDA auto f = [](auto i) { return i + int_<1>; };
int main() {
BOOST_HANA_CONSTEXPR_ASSERT(fmap(f, std::make_tuple()) == std::make_tuple());
BOOST_HANA_CONSTEXPR_ASSERT(fmap(f, std::make_tuple(int_<1>)) == std::make_tuple(f(int_<1>)));
BOOST_HANA_CONSTEXPR_ASSERT(fmap(f, std::make_tuple(int_<1>, int_<2>)) == std::make_tuple(f(int_<1>), f(int_<2>)));
BOOST_HANA_CONSTEXPR_ASSERT(fmap(f, std::make_tuple(int_<1>, int_<2>, int_<3>)) == std::make_tuple(f(int_<1>), f(int_<2>), f(int_<3>)));
}