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48 lines
1.6 KiB
C++
48 lines
1.6 KiB
C++
#include <boost/fit/arg.hpp>
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#include <boost/fit/is_callable.hpp>
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#include <type_traits>
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#include "test.hpp"
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BOOST_FIT_TEST_CASE()
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{
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BOOST_FIT_STATIC_TEST_CHECK(boost::fit::arg_c<3>(1,2,3,4,5) == 3);
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BOOST_FIT_TEST_CHECK( boost::fit::arg_c<3>(1,2,3,4,5) == 3 );
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}
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BOOST_FIT_TEST_CASE()
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{
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BOOST_FIT_STATIC_TEST_CHECK(boost::fit::arg(std::integral_constant<int, 3>())(1,2,3,4,5) == 3);
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BOOST_FIT_TEST_CHECK( boost::fit::arg(std::integral_constant<int, 3>())(1,2,3,4,5) == 3 );
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}
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BOOST_FIT_TEST_CASE()
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{
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auto at_3 = boost::fit::arg(std::integral_constant<int, 3>());
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static_assert(boost::fit::is_callable<decltype(at_3), int, int, int>::value, "Not SFINAE-friendly");
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static_assert(!boost::fit::is_callable<decltype(at_3), int, int>::value, "Not SFINAE-friendly");
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static_assert(!boost::fit::is_callable<decltype(at_3), int>::value, "Not SFINAE-friendly");
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}
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struct foo {};
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BOOST_FIT_TEST_CASE()
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{
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static_assert(!boost::fit::is_callable<decltype(boost::fit::arg), int>::value, "Not sfinae friendly");
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static_assert(!boost::fit::is_callable<decltype(boost::fit::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_FIT_HAS_NOEXCEPT_DEDUCTION
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BOOST_FIT_TEST_CASE()
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{
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static_assert(noexcept(boost::fit::arg_c<3>(1,2,3,4,5)), "noexcept arg");
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static_assert(noexcept(boost::fit::arg(std::integral_constant<int, 3>())(1,2,3,4,5)), "noexcept arg");
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static_assert(!noexcept(boost::fit::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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