ceph/src/boost/libs/hana/test/optional/less.cpp

   1 // Copyright Louis Dionne 2013-2017
   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 #include <boost/hana/assert.hpp>
   6 #include <boost/hana/greater.hpp>
   7 #include <boost/hana/greater_equal.hpp>
   8 #include <boost/hana/less.hpp>
   9 #include <boost/hana/less_equal.hpp>
  10 #include <boost/hana/not.hpp>
  11 #include <boost/hana/optional.hpp>
  12
  13 #include <laws/base.hpp>
  14 namespace hana = boost::hana;
  15 using hana::test::ct_ord;
  16
  17
  18 struct undefined { };
  19
  20 int main() {
  21     BOOST_HANA_CONSTANT_CHECK(hana::nothing < hana::just(undefined{}));
  22     BOOST_HANA_CONSTANT_CHECK(hana::just(ct_ord<3>{}) < hana::just(ct_ord<4>{}));
  23     BOOST_HANA_CONSTANT_CHECK(hana::just(ct_ord<3>{}) <= hana::just(ct_ord<4>{}));
  24     BOOST_HANA_CONSTANT_CHECK(hana::just(ct_ord<4>{}) > hana::just(ct_ord<3>{}));
  25     BOOST_HANA_CONSTANT_CHECK(hana::just(ct_ord<4>{}) >= hana::just(ct_ord<3>{}));
  26
  27     BOOST_HANA_CONSTANT_CHECK(hana::less(
  28         hana::nothing,
  29         hana::just(undefined{})
  30     ));
  31     BOOST_HANA_CONSTANT_CHECK(hana::not_(hana::less(
  32         hana::just(undefined{}),
  33         hana::nothing
  34     )));
  35     BOOST_HANA_CONSTANT_CHECK(hana::not_(hana::less(
  36         hana::nothing,
  37         hana::nothing
  38     )));
  39
  40     BOOST_HANA_CONSTANT_CHECK(hana::less(
  41         hana::just(ct_ord<3>{}),
  42         hana::just(ct_ord<4>{})
  43     ));
  44     BOOST_HANA_CONSTANT_CHECK(hana::not_(hana::less(
  45         hana::just(ct_ord<3>{}),
  46         hana::just(ct_ord<3>{})
  47     )));
  48     BOOST_HANA_CONSTANT_CHECK(hana::not_(hana::less(
  49         hana::just(ct_ord<4>{}),
  50         hana::just(ct_ord<3>{})
  51     )));
  52 }