projects / ceph.git / blame
| Commit | Line | Data |
|---|---|---|
| b32b8144 | 1 | // Copyright Louis Dionne 2013-2017 |
| 7c673cae FG |
2 | // Distributed under the Boost Software License, Version 1.0. |
| 3 | // (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt) | |
| 4 | ||
| 5 | #ifndef BOOST_HANA_TEST_AUTO_IS_EMPTY_HPP | |
| 6 | #define BOOST_HANA_TEST_AUTO_IS_EMPTY_HPP | |
| 7 | ||
| 8 | #include <boost/hana/assert.hpp> | |
| 9 | #include <boost/hana/is_empty.hpp> | |
| 10 | #include <boost/hana/not.hpp> | |
| 11 | ||
| 12 | #include "test_case.hpp" | |
| 13 | ||
| 14 | ||
| 15 | namespace _test_is_empty_detail { template <int i> struct undefined { }; } | |
| 16 | ||
| 17 | TestCase test_is_empty{[]{ | |
| 18 | namespace hana = boost::hana; | |
| 19 | using _test_is_empty_detail::undefined; | |
| 20 | ||
| 21 | BOOST_HANA_CONSTANT_CHECK(hana::is_empty( | |
| 22 | MAKE_TUPLE() | |
| 23 | )); | |
| 24 | ||
| 25 | BOOST_HANA_CONSTANT_CHECK(hana::not_(hana::is_empty( | |
| 26 | MAKE_TUPLE(undefined<0>{}) | |
| 27 | ))); | |
| 28 | ||
| 29 | BOOST_HANA_CONSTANT_CHECK(hana::not_(hana::is_empty( | |
| 30 | MAKE_TUPLE(undefined<0>{}, undefined<1>{}) | |
| 31 | ))); | |
| 32 | ||
| 33 | BOOST_HANA_CONSTANT_CHECK(hana::not_(hana::is_empty( | |
| 34 | MAKE_TUPLE(undefined<0>{}, undefined<1>{}, undefined<2>{}) | |
| 35 | ))); | |
| 36 | ||
| 37 | BOOST_HANA_CONSTANT_CHECK(hana::not_(hana::is_empty( | |
| 38 | MAKE_TUPLE(undefined<0>{}, undefined<1>{}, undefined<2>{}, undefined<3>{}) | |
| 39 | ))); | |
| 40 | ||
| 41 | // Check with a runtime value | |
| 42 | { | |
| 43 | int i = 3; // <- runtime value | |
| 44 | BOOST_HANA_CONSTANT_CHECK(hana::not_(hana::is_empty(MAKE_TUPLE(i)))); | |
| 45 | BOOST_HANA_CONSTANT_CHECK(hana::not_(hana::is_empty(MAKE_TUPLE(i, i)))); | |
| 46 | } | |
| 47 | ||
| 48 | #ifndef MAKE_TUPLE_NO_CONSTEXPR | |
| 49 | static_assert(hana::is_empty(MAKE_TUPLE()), ""); | |
| 50 | static_assert(hana::not_(hana::is_empty(MAKE_TUPLE(undefined<0>{}))), ""); | |
| 51 | static_assert(hana::not_(hana::is_empty(MAKE_TUPLE(undefined<0>{}, undefined<1>{}))), ""); | |
| 52 | #endif | |
| 53 | }}; | |
| 54 | ||
| 55 | #endif // !BOOST_HANA_TEST_AUTO_IS_EMPTY_HPP |