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- /* Unit testing for outcomes
- (C) 2013-2019 Niall Douglas <http://www.nedproductions.biz/> (1 commit)
- Boost Software License - Version 1.0 - August 17th, 2003
- Permission is hereby granted, free of charge, to any person or organization
- obtaining a copy of the software and accompanying documentation covered by
- this license (the "Software") to use, reproduce, display, distribute,
- execute, and transmit the Software, and to prepare derivative works of the
- Software, and to permit third-parties to whom the Software is furnished to
- do so, all subject to the following:
- The copyright notices in the Software and this entire statement, including
- the above license grant, this restriction and the following disclaimer,
- must be included in all copies of the Software, in whole or in part, and
- all derivative works of the Software, unless such copies or derivative
- works are solely in the form of machine-executable object code generated by
- a source language processor.
- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
- SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
- FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
- ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
- DEALINGS IN THE SOFTWARE.
- */
- #include <boost/outcome/outcome.hpp>
- #include <boost/outcome/try.hpp>
- #include <boost/test/unit_test.hpp>
- #include <boost/test/unit_test_monitor.hpp>
- namespace issues210
- {
- namespace outcome = BOOST_OUTCOME_V2_NAMESPACE;
- struct error
- {
- boost::system::error_code code;
- };
- // say that my custom error code type is error code compatible
- inline boost::system::error_code make_error_code(error error) noexcept { return error.code; }
- template <typename T> using custom_result = outcome::basic_result<T, error, outcome::policy::default_policy<T, error, void>>;
- // source of custom result type with error code compatible error type
- inline custom_result<int> funcA(int x) { return x; }
- // Is the custom result type explicitly constructible to an ordinary result type?
- inline outcome::result<int> funcB(int x) { return outcome::result<int>(funcA(x)); }
- // Does the custom result type TRY-convert to an ordinary result type?
- inline outcome::result<int> func1(int x)
- {
- BOOST_OUTCOME_TRY(y, funcA(x));
- return funcB(y);
- }
- // Is the custom result type explicitly constructible to an ordinary outcome type?
- inline outcome::outcome<int> funcC(int x) { return outcome::outcome<int>(funcA(x)); }
- // Does the custom result type TRY-convert to an ordinary outcome type?
- inline outcome::outcome<int> func2(int x)
- {
- BOOST_OUTCOME_TRY(y, funcA(x));
- return funcC(y);
- }
- } // namespace issues210
- BOOST_OUTCOME_AUTO_TEST_CASE(issues_0210_test, "result<int, E> with error code compatible custom E does not TRY into a result<int, boost::system::error_code> function")
- {
- BOOST_CHECK(issues210::func1(5).value() == 5);
- BOOST_CHECK(issues210::func2(5).value() == 5);
- }
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