Class copy_constructible_only_test

tests/utils.h:99–130

};

class copy_constructible_only_test {
 public:
  explicit copy_constructible_only_test(std::int64_t value) : m_value(value) {}

  copy_constructible_only_test(const copy_constructible_only_test&) = default;
  copy_constructible_only_test(copy_constructible_only_test&&) = delete;
  copy_constructible_only_test& operator=(const copy_constructible_only_test&) =
      delete;
  copy_constructible_only_test& operator=(copy_constructible_only_test&&) =
      delete;

  friend std::ostream& operator<<(std::ostream& stream,
                                  const copy_constructible_only_test& value) {
    stream << value.m_value;
    return stream;
  }

  friend bool operator==(const copy_constructible_only_test& lhs,
                         const copy_constructible_only_test& rhs) {
    return lhs.m_value == rhs.m_value;
  }

  friend bool operator!=(const copy_constructible_only_test& lhs,
                         const copy_constructible_only_test& rhs) {
    return !(lhs == rhs);
  }

  std::int64_t value() const { return m_value; }

 private:
  std::int64_t m_value;
};

namespace std {
template <>