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Diffstat (limited to '')
-rw-r--r-- | src/boost/libs/hana/test/_include/auto/drop_back.hpp | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/src/boost/libs/hana/test/_include/auto/drop_back.hpp b/src/boost/libs/hana/test/_include/auto/drop_back.hpp new file mode 100644 index 000000000..e3ea42e0c --- /dev/null +++ b/src/boost/libs/hana/test/_include/auto/drop_back.hpp @@ -0,0 +1,99 @@ +// 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_DROP_BACK_HPP +#define BOOST_HANA_TEST_AUTO_DROP_BACK_HPP + +#include <boost/hana/assert.hpp> +#include <boost/hana/drop_back.hpp> +#include <boost/hana/equal.hpp> +#include <boost/hana/integral_constant.hpp> + +#include <laws/base.hpp> +#include "test_case.hpp" + + +TestCase test_drop_back{[]{ + namespace hana = boost::hana; + using hana::test::ct_eq; + + BOOST_HANA_CONSTANT_CHECK(hana::equal( + hana::drop_back(MAKE_TUPLE(), hana::size_c<0>), + MAKE_TUPLE() + )); + BOOST_HANA_CONSTANT_CHECK(hana::equal( + hana::drop_back(MAKE_TUPLE(), hana::size_c<1>), + MAKE_TUPLE() + )); + BOOST_HANA_CONSTANT_CHECK(hana::equal( + hana::drop_back(MAKE_TUPLE(), hana::size_c<2>), + MAKE_TUPLE() + )); + + BOOST_HANA_CONSTANT_CHECK(hana::equal( + hana::drop_back(MAKE_TUPLE(ct_eq<0>{}), hana::size_c<0>), + MAKE_TUPLE(ct_eq<0>{}) + )); + BOOST_HANA_CONSTANT_CHECK(hana::equal( + hana::drop_back(MAKE_TUPLE(ct_eq<0>{}), hana::size_c<1>), + MAKE_TUPLE() + )); + BOOST_HANA_CONSTANT_CHECK(hana::equal( + hana::drop_back(MAKE_TUPLE(ct_eq<0>{}), hana::size_c<2>), + MAKE_TUPLE() + )); + + BOOST_HANA_CONSTANT_CHECK(hana::equal( + hana::drop_back(MAKE_TUPLE(ct_eq<0>{}, ct_eq<1>{}), hana::size_c<0>), + MAKE_TUPLE(ct_eq<0>{}, ct_eq<1>{}) + )); + BOOST_HANA_CONSTANT_CHECK(hana::equal( + hana::drop_back(MAKE_TUPLE(ct_eq<0>{}, ct_eq<1>{}), hana::size_c<1>), + MAKE_TUPLE(ct_eq<0>{}) + )); + BOOST_HANA_CONSTANT_CHECK(hana::equal( + hana::drop_back(MAKE_TUPLE(ct_eq<0>{}, ct_eq<1>{}), hana::size_c<2>), + MAKE_TUPLE() + )); + + BOOST_HANA_CONSTANT_CHECK(hana::equal( + hana::drop_back(MAKE_TUPLE(ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{}), hana::size_c<0>), + MAKE_TUPLE(ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{}) + )); + BOOST_HANA_CONSTANT_CHECK(hana::equal( + hana::drop_back(MAKE_TUPLE(ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{}), hana::size_c<1>), + MAKE_TUPLE(ct_eq<0>{}, ct_eq<1>{}) + )); + BOOST_HANA_CONSTANT_CHECK(hana::equal( + hana::drop_back(MAKE_TUPLE(ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{}), hana::size_c<2>), + MAKE_TUPLE(ct_eq<0>{}) + )); + BOOST_HANA_CONSTANT_CHECK(hana::equal( + hana::drop_back(MAKE_TUPLE(ct_eq<0>{}, ct_eq<1>{}, ct_eq<2>{}), hana::size_c<3>), + MAKE_TUPLE() + )); + + // make sure hana::drop_back(xs) == hana::drop_back(xs, hana::size_c<1>) + BOOST_HANA_CHECK(hana::equal( + hana::drop_back(MAKE_TUPLE()), + hana::drop_back(MAKE_TUPLE(), hana::size_c<1>) + )); + + BOOST_HANA_CHECK(hana::equal( + hana::drop_back(MAKE_TUPLE(ct_eq<0>{})), + hana::drop_back(MAKE_TUPLE(ct_eq<0>{}), hana::size_c<1>) + )); + + BOOST_HANA_CHECK(hana::equal( + hana::drop_back(MAKE_TUPLE(ct_eq<0>{}, ct_eq<1>{})), + hana::drop_back(MAKE_TUPLE(ct_eq<0>{}, ct_eq<1>{}), hana::size_c<1>) + )); + + BOOST_HANA_CHECK(hana::equal( + hana::drop_back(MAKE_TUPLE(ct_eq<0>{}, ct_eq<2>{})), + hana::drop_back(MAKE_TUPLE(ct_eq<0>{}, ct_eq<2>{}), hana::size_c<1>) + )); +}}; + +#endif // !BOOST_HANA_TEST_AUTO_DROP_BACK_HPP |