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

   1 // Copyright Louis Dionne 2013-2016
   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/equal.hpp>
   7 #include <boost/hana/optional.hpp>
   8 #include <boost/hana/ap.hpp>
   9
  10 #include <laws/base.hpp>
  11 namespace hana = boost::hana;
  12 using hana::test::ct_eq;
  13
  14
  15 int main() {
  16     hana::test::_injection<0> f{};
  17
  18     BOOST_HANA_CONSTANT_CHECK(hana::equal(
  19         hana::ap(hana::nothing, hana::nothing),
  20         hana::nothing
  21     ));
  22     BOOST_HANA_CONSTANT_CHECK(hana::equal(
  23         hana::ap(hana::just(f), hana::nothing),
  24         hana::nothing
  25     ));
  26     BOOST_HANA_CONSTANT_CHECK(hana::equal(
  27         hana::ap(hana::nothing, hana::just(ct_eq<3>{})),
  28         hana::nothing
  29     ));
  30     BOOST_HANA_CONSTANT_CHECK(hana::equal(
  31         hana::ap(hana::just(f), hana::just(ct_eq<3>{})),
  32         hana::just(f(ct_eq<3>{}))
  33     ));
  34 }