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- /*=============================================================================
- Copyright (c) 2017 Paul Fultz II
- always.cpp
- Distributed under the Boost Software License, Version 1.0. (See accompanying
- file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
- ==============================================================================*/
- #include <boost/hof/always.hpp>
- #include <boost/hof/function.hpp>
- #include <memory>
- #include "test.hpp"
- BOOST_HOF_TEST_CASE()
- {
- static const int ten = 10;
- BOOST_HOF_STATIC_TEST_CHECK(boost::hof::always(ten)(1,2,3,4,5) == 10);
- BOOST_HOF_TEST_CHECK( boost::hof::always(ten)(1,2,3,4,5) == 10 );
-
- int i = 10;
- BOOST_HOF_TEST_CHECK( boost::hof::always(std::ref(i))(1,2,3,4,5) == 10 );
- BOOST_HOF_TEST_CHECK( &boost::hof::always(std::ref(i))(1,2,3,4,5) == &i );
- boost::hof::always()(1, 2);
- static_assert(std::is_same<decltype(boost::hof::always()(1, 2)), BOOST_HOF_ALWAYS_VOID_RETURN>::value, "Failed");
- }
- BOOST_HOF_TEST_CASE()
- {
- int i = 10;
- BOOST_HOF_TEST_CHECK( boost::hof::always_ref(i)(1,2,3,4,5) == 10 );
- BOOST_HOF_TEST_CHECK( &boost::hof::always_ref(i)(1,2,3,4,5) == &i );
- }
- BOOST_HOF_STATIC_FUNCTION(gten) = boost::hof::always(std::integral_constant<int, 10>{});
- BOOST_HOF_TEST_CASE()
- {
- BOOST_HOF_STATIC_TEST_CHECK(gten(1,2,3,4,5) == 10);
- BOOST_HOF_TEST_CHECK(gten(1,2,3,4,5) == 10);
- }
- BOOST_HOF_TEST_CASE()
- {
- auto f = boost::hof::always(10);
- STATIC_ASSERT_NOT_DEFAULT_CONSTRUCTIBLE(decltype(f));
- BOOST_HOF_TEST_CHECK(f(1,2,3,4,5) == 10);
- }
- struct copy_throws
- {
- copy_throws() {}
- copy_throws(copy_throws const&) {}
- copy_throws(copy_throws&&) noexcept {}
- };
- BOOST_HOF_TEST_CASE()
- {
- static_assert(noexcept(boost::hof::always()()), "noexcept always");
- static_assert(noexcept(boost::hof::always(1)()), "noexcept always");
- static_assert(!noexcept(boost::hof::always(copy_throws{})()), "noexcept always");
- copy_throws ct{};
- static_assert(!noexcept(boost::hof::always(ct)()), "noexcept always");
- static_assert(noexcept(boost::hof::always(std::ref(ct))()) == BOOST_HOF_IS_NOTHROW_COPY_CONSTRUCTIBLE(std::reference_wrapper<copy_throws>), "noexcept always");
- auto ctf = boost::hof::always(copy_throws{});
- static_assert(!noexcept(ctf()), "noexcept always");
- }
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