bump version to 15.2.11-pve1

[ceph.git] / ceph / src / boost / libs / outcome / test / tests / value-or-error.cpp

/* Unit testing for outcomes
(C) 2013-2019 Niall Douglas <http://www.nedproductions.biz/> (3 commits)


Boost Software License - Version 1.0 - August 17th, 2003

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*/

#include <boost/outcome/outcome.hpp>
#include <boost/test/unit_test.hpp>
#include <boost/test/unit_test_monitor.hpp>

BOOST_OUTCOME_AUTO_TEST_CASE(works_outcome_valueorerror, "Tests that outcome constructs from ValueOrError and ValueOrNone concept inputs")
{
  using namespace BOOST_OUTCOME_V2_NAMESPACE;
  {
    struct value_or_error
    {
      using value_type = int;
      using error_type = void;
      bool has_value() const { return true; }
      int value() const { return 78; }
      void error() const {}
    } a;
    static_assert(convert::ValueOrNone<value_or_error>, "");
    static_assert(convert::ValueOrError<value_or_error>, "");
    BOOST_CHECK((convert::value_or_error<result<long>, value_or_error>{}(a).value() == 78));

    result<long> b(a);
    BOOST_CHECK(b.has_value());
    BOOST_CHECK(b.value() == 78);
  }
}