RAII-UniquePtr

struct Spy {
        explicit Spy(bool& is_deleted, int& copy_count)
                : is_deleted_(is_deleted), copy_count_(copy_count) {}

        Spy(const Spy& rhs)
                : is_deleted_(rhs.is_deleted_), copy_count_(rhs.copy_count_) {
            ++copy_count_;
        }
        ~Spy() {
            is_deleted_ = true;
        }

        bool& is_deleted_;
        int& copy_count_;
    };

void MoveConstructorOrGet() {
        {
            UniquePtr<Spy> uptr(nullptr);
            UniquePtr<Spy> uptr2(std::move(uptr));

            ASSERT_EQUAL(uptr.Get(), nullptr);
            ASSERT_EQUAL(uptr2.Get(), nullptr);
        } {
            int copy_count_ = 0;
            bool is_deleted = false;
            auto *ptr = new Spy(is_deleted, copy_count_);
            UniquePtr<Spy> uptr(ptr);
            UniquePtr<Spy> uptr2(std::move(uptr));

            ASSERT_EQUAL(uptr.Get(), nullptr);
            ASSERT_EQUAL(uptr2.Get(), ptr)
            ASSERT_EQUAL(copy_count_, 0)
        }
    }