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- // 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)
- #ifndef BOOST_HANA_TEST_AUTO_LENGTH_HPP
- #define BOOST_HANA_TEST_AUTO_LENGTH_HPP
- #include <boost/hana/assert.hpp>
- #include <boost/hana/equal.hpp>
- #include <boost/hana/integral_constant.hpp>
- #include <boost/hana/length.hpp>
- #include "test_case.hpp"
- namespace _test_length_detail { template <int> struct undefined { }; }
- TestCase test_length{[]{
- namespace hana = boost::hana;
- using _test_length_detail::undefined;
- BOOST_HANA_CONSTANT_CHECK(hana::equal(
- hana::length(MAKE_TUPLE()),
- hana::size_c<0>
- ));
- BOOST_HANA_CONSTANT_CHECK(hana::equal(
- hana::length(MAKE_TUPLE(undefined<1>{})),
- hana::size_c<1>
- ));
- BOOST_HANA_CONSTANT_CHECK(hana::equal(
- hana::length(MAKE_TUPLE(undefined<1>{}, undefined<2>{})),
- hana::size_c<2>
- ));
- BOOST_HANA_CONSTANT_CHECK(hana::equal(
- hana::length(MAKE_TUPLE(undefined<1>{}, undefined<2>{}, undefined<3>{})),
- hana::size_c<3>
- ));
- BOOST_HANA_CONSTANT_CHECK(hana::equal(
- hana::length(MAKE_TUPLE(undefined<1>{}, undefined<2>{}, undefined<3>{}, undefined<4>{}, undefined<5>{}, undefined<6>{})),
- hana::size_c<6>
- ));
- }};
- #endif // !BOOST_HANA_TEST_AUTO_LENGTH_HPP
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