55 lines
2.2 KiB
C++
55 lines
2.2 KiB
C++
/* Unit testing for outcomes
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(C) 2013-2019 Niall Douglas <http://www.nedproductions.biz/> (3 commits)
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Boost Software License - Version 1.0 - August 17th, 2003
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Permission is hereby granted, free of charge, to any person or organization
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obtaining a copy of the software and accompanying documentation covered by
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this license (the "Software") to use, reproduce, display, distribute,
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execute, and transmit the Software, and to prepare derivative works of the
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Software, and to permit third-parties to whom the Software is furnished to
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do so, all subject to the following:
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The copyright notices in the Software and this entire statement, including
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the above license grant, this restriction and the following disclaimer,
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must be included in all copies of the Software, in whole or in part, and
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all derivative works of the Software, unless such copies or derivative
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works are solely in the form of machine-executable object code generated by
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a source language processor.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
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SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
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FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
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ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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DEALINGS IN THE SOFTWARE.
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*/
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#include <boost/outcome/outcome.hpp>
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#include <boost/test/unit_test.hpp>
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#include <boost/test/unit_test_monitor.hpp>
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BOOST_OUTCOME_AUTO_TEST_CASE(works_outcome_valueorerror, "Tests that outcome constructs from ValueOrError and ValueOrNone concept inputs")
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{
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using namespace BOOST_OUTCOME_V2_NAMESPACE;
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{
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struct value_or_error
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{
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using value_type = int;
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using error_type = void;
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bool has_value() const { return true; }
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int value() const { return 78; }
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void error() const {}
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} a;
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static_assert(convert::ValueOrNone<value_or_error>, "");
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static_assert(convert::ValueOrError<value_or_error>, "");
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BOOST_CHECK((convert::value_or_error<result<long>, value_or_error>{}(a).value() == 78));
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result<long> b(a);
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BOOST_CHECK(b.has_value());
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BOOST_CHECK(b.value() == 78);
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}
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}
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