public async Task Add_Doctor_ReturnAdedDoctor(Doctor doctor,
                                                      User user,
                                                      [Frozen] Mock <IUserService> _userServiceMock,
                                                      [Frozen] Mock <IRepositoryWrapper> _repositoryMock,
                                                      [Frozen] Mock <RoleManager <IdentityRole> > _roleManagerMock,
                                                      [Frozen] IdentityRole role)
        {
            // Arrange
            _repositoryMock.Setup(x => x.DoctorRepository
                                  .Add(doctor));
            _userServiceMock.Setup(x => x.CreateUserAsync(user, role))
            .ReturnsAsync((true, doctor.UserId));
            _repositoryMock.Setup(d => d.DoctorRepository.GetFirstOrDefaultAsync(d => d.Id == doctor.Id,
                                                                                 It.IsAny <Func <IQueryable <Doctor>, IIncludableQueryable <Doctor,
                                                                                                                                            object> > >(), false))
            .ReturnsAsync(doctor);

            var _doctorService = new DoctorService(_repositoryMock.Object, _userServiceMock.Object, _roleManagerMock.Object);

            // Act
            var actual = await _doctorService.AddDoctorAsync(doctor, user);

            // Assert
            Assert.Equal(doctor, actual);
        }