| 1 | // Copyright 2023 Peter Dimov. |
|---|---|
| 2 | // Distributed under the Boost Software License, Version 1.0. |
| 3 | // https://www.boost.org/LICENSE_1_0.txt |
| 4 | |
| 5 | #include <boost/system/result.hpp> |
| 6 | #include <boost/core/lightweight_test.hpp> |
| 7 | |
| 8 | using namespace boost::system; |
| 9 | |
| 10 | // Tricky mixed construction cases |
| 11 | // https://github.com/boostorg/system/issues/104 |
| 12 | // https://brevzin.github.io//c++/2023/01/18/optional-construction/ |
| 13 | |
| 14 | int main() |
| 15 | { |
| 16 | { |
| 17 | result<int> r( make_error_code( e: errc::invalid_argument ) ); |
| 18 | result<result<int>> r2( r ); |
| 19 | |
| 20 | BOOST_TEST( r2.has_value() ) && BOOST_TEST_EQ( r2.value(), r ); |
| 21 | } |
| 22 | |
| 23 | { |
| 24 | result<int> r( 5 ); |
| 25 | result<result<int>> r2( r ); |
| 26 | |
| 27 | BOOST_TEST( r2.has_value() ) && BOOST_TEST_EQ( r2.value(), r ); |
| 28 | } |
| 29 | |
| 30 | { |
| 31 | result<int> const r( make_error_code( e: errc::invalid_argument ) ); |
| 32 | result<result<int>> r2( r ); |
| 33 | |
| 34 | BOOST_TEST( r2.has_value() ) && BOOST_TEST_EQ( r2.value(), r ); |
| 35 | } |
| 36 | |
| 37 | { |
| 38 | result<int> const r( 5 ); |
| 39 | result<result<int>> r2( r ); |
| 40 | |
| 41 | BOOST_TEST( r2.has_value() ) && BOOST_TEST_EQ( r2.value(), r ); |
| 42 | } |
| 43 | |
| 44 | { |
| 45 | result<int> r( make_error_code( e: errc::invalid_argument ) ); |
| 46 | result<result<int>> r2( std::move( r ) ); |
| 47 | |
| 48 | BOOST_TEST( r2.has_value() ) && BOOST_TEST_EQ( r2.value(), r ); |
| 49 | } |
| 50 | |
| 51 | { |
| 52 | result<int> r( 5 ); |
| 53 | result<result<int>> r2( std::move( r ) ); |
| 54 | |
| 55 | BOOST_TEST( r2.has_value() ) && BOOST_TEST_EQ( r2.value(), r ); |
| 56 | } |
| 57 | |
| 58 | return boost::report_errors(); |
| 59 | } |
| 60 |