update ceph source to reef 18.1.2

[ceph.git] / ceph / src / boost / libs / outcome / test / tests / issue0061.cpp

/* Unit testing for outcomes
(C) 2013-2022 Niall Douglas <http://www.nedproductions.biz/> (6 commits)


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
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Software, and to permit third-parties to whom the Software is furnished to
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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
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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
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*/

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

BOOST_OUTCOME_AUTO_TEST_CASE(issues_0061_result, "result<T1, E1> does not compare to incompatible result<T2, E2>")
{
  using namespace BOOST_OUTCOME_V2_NAMESPACE;
  struct udt1
  {
    const char *_v{nullptr};
    udt1() = default;
    constexpr udt1(const char *v) noexcept : _v(v) {}  // NOLINT
    udt1(udt1 &&o) = delete;
    udt1(const udt1 &) = delete;
    udt1 &operator=(udt1 &&o) = delete;
    udt1 &operator=(const udt1 &) = delete;
    ~udt1() = default;
    constexpr const char *operator*() const noexcept { return _v; }
  };
  struct udt2
  {
    const char *_v{nullptr};
    udt2() = default;
    constexpr explicit udt2(const char *v) noexcept : _v(v) {}
    udt2(udt2 &&o) = delete;
    udt2(const udt2 &) = delete;
    udt2 &operator=(udt2 &&o) = delete;
    udt2 &operator=(const udt2 &) = delete;
    ~udt2() = default;
    constexpr const char *operator*() const noexcept { return _v; }
    bool operator==(const udt1 &o) const noexcept { return _v == *o; }
    bool operator!=(const udt1 &o) const noexcept { return _v != *o; }
  };
  using result1 = result<int, udt1>;
  using result2 = result<int, udt2>;

  result1 a(5);
  result2 b(5);
  BOOST_CHECK(b == a);     // udt2 will compare to udt1
  BOOST_CHECK(!(b != a));  // udt2 will compare to udt1

  result<void> c = success();
  result<void> d = success();
  BOOST_CHECK(c == d);
  BOOST_CHECK(!(c != d));

  BOOST_CHECK(a == success());
  BOOST_CHECK(success() == a);
  BOOST_CHECK(b != failure("foo"));
  BOOST_CHECK(failure("foo") != b);
}

BOOST_OUTCOME_AUTO_TEST_CASE(issues_0061_outcome, "outcome<T1, E1, P1> does not compare to incompatible outcome<T2, E2, P2>")
{
  using namespace BOOST_OUTCOME_V2_NAMESPACE;
  struct udt1
  {
    const char *_v{nullptr};
    udt1() = default;
    constexpr udt1(const char *v) noexcept : _v(v) {}  // NOLINT
    udt1(udt1 &&o) = delete;
    udt1(const udt1 &) = delete;
    udt1 &operator=(udt1 &&o) = delete;
    udt1 &operator=(const udt1 &) = delete;
    ~udt1() = default;
    constexpr const char *operator*() const noexcept { return _v; }
  };
  struct udt2
  {
    const char *_v{nullptr};
    udt2() = default;
    constexpr explicit udt2(const char *v) noexcept : _v(v) {}
    udt2(udt2 &&o) = delete;
    udt2(const udt2 &) = delete;
    udt2 &operator=(udt2 &&o) = delete;
    udt2 &operator=(const udt2 &) = delete;
    ~udt2() = default;
    constexpr const char *operator*() const noexcept { return _v; }
    bool operator==(const udt1 &o) const noexcept { return _v == *o; }
    bool operator!=(const udt1 &o) const noexcept { return _v != *o; }
  };
  using outcome1 = outcome<int, udt1>;
  using outcome2 = outcome<int, udt2>;

  outcome1 a(5), _a(6);
  outcome2 b(5);
  BOOST_CHECK(b == a);     // udt2 will compare to udt1
  BOOST_CHECK(!(b != a));  // udt2 will compare to udt1

  outcome<void> c = success();
  outcome<void> d = success();
  BOOST_CHECK(c == d);
  BOOST_CHECK(!(c != d));

  BOOST_CHECK(a == success());
  BOOST_CHECK(success() == a);
  BOOST_CHECK(b != failure("foo"));
  BOOST_CHECK(failure("foo") != b);
}