54 lines
2.0 KiB
C++
54 lines
2.0 KiB
C++
/*=============================================================================
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Copyright (c) 2017 Paul Fultz II
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arg.cpp
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Distributed under the Boost Software License, Version 1.0. (See accompanying
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file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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==============================================================================*/
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#include <boost/hof/arg.hpp>
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#include <boost/hof/is_invocable.hpp>
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#include <type_traits>
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#include "test.hpp"
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BOOST_HOF_TEST_CASE()
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{
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BOOST_HOF_STATIC_TEST_CHECK(boost::hof::arg_c<3>(1,2,3,4,5) == 3);
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BOOST_HOF_TEST_CHECK( boost::hof::arg_c<3>(1,2,3,4,5) == 3 );
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}
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BOOST_HOF_TEST_CASE()
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{
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BOOST_HOF_STATIC_TEST_CHECK(boost::hof::arg(std::integral_constant<int, 3>())(1,2,3,4,5) == 3);
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BOOST_HOF_TEST_CHECK( boost::hof::arg(std::integral_constant<int, 3>())(1,2,3,4,5) == 3 );
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}
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BOOST_HOF_TEST_CASE()
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{
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auto at_3 = boost::hof::arg(std::integral_constant<int, 3>());
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static_assert(boost::hof::is_invocable<decltype(at_3), int, int, int>::value, "Not SFINAE-friendly");
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static_assert(!boost::hof::is_invocable<decltype(at_3), int, int>::value, "Not SFINAE-friendly");
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static_assert(!boost::hof::is_invocable<decltype(at_3), int>::value, "Not SFINAE-friendly");
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}
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struct foo {};
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BOOST_HOF_TEST_CASE()
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{
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static_assert(!boost::hof::is_invocable<decltype(boost::hof::arg), int>::value, "Not sfinae friendly");
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static_assert(!boost::hof::is_invocable<decltype(boost::hof::arg), foo>::value, "Not sfinae friendly");
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}
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struct copy_throws
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{
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copy_throws() {}
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copy_throws(copy_throws const&) {}
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copy_throws(copy_throws&&) noexcept {}
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};
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#if BOOST_HOF_HAS_NOEXCEPT_DEDUCTION
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BOOST_HOF_TEST_CASE()
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{
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static_assert(noexcept(boost::hof::arg_c<3>(1,2,3,4,5)), "noexcept arg");
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static_assert(noexcept(boost::hof::arg(std::integral_constant<int, 3>())(1,2,3,4,5)), "noexcept arg");
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static_assert(!noexcept(boost::hof::arg(std::integral_constant<int, 3>())(1,2,copy_throws{},4,5)), "noexcept arg");
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}
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#endif
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