public async Task<IdentityResult> AddToRole(AddToRoleViewModel userModel = null, string role = null,
            UserViewModel userViewModel = null)
        {
            if (userModel != null)
            {
                var user = await _userManager.FindByEmailAsync(userModel.Email);
                return await _userManager.AddToRoleAsync(user, userModel.RoleName);
            }
            else return await _userManager.AddToRoleAsync(userViewModel, role);
        }services.AddDbContext<ApplicationContext>(
                    options => {
                        options.UseNpgsql(configuration.GetConnectionString("DefaultConnection"),
                b => b.MigrationsAssembly("Libraly.Data")
            );
                        options.UseQueryTrackingBehavior(QueryTrackingBehavior.NoTracking);
                    }
                    )public class RegisterViewModel
    {
        //обязательные поля
        [Required(ErrorMessage = "Пустое поле")]
        public string FirstName { get; set; }
        [Required(ErrorMessage = "Пустое поле")]
        public string FullName { get; set; }
}RegisterViewModel fakeUser = new RegisterViewModel();
            
            fakeUser.Password = null;
            fakeUser.UserName = null;
            fakeUser.Email = null;public void CheckAddUser()
        {
            SetingUsers();
            
            var moc = new Mock<IUserService>();
            moc.Setup(c => c.Create(It.IsAny<RegisterViewModel>()) );
            
            var userController = new TestController(moc.Object);
            var result = userController.Create(fakeUser);
//должен вернуть ошибку
           
        }public async Task<ActionResult> Create(RegisterViewModel user)
        {
           // ModelState.AddModelError("swe","ssssss");
  
            if (ModelState.IsValid)
            {
                var result = await _userService.Create(user);
                return Ok(user);
            }
            else
            {
                return BadRequest(ModelState);
            }
        }public class ApplicationContextFactory:IDesignTimeDbContextFactory
{
public ApplicationContext CreateDbContext(string[] args)
{
var optionsBuilder = new DbContextOptionsBuilder();
optionsBuilder.UseNpgsql(b => b.MigrationsAssembly("Libraly.Data"));
return new ApplicationContext(optionsBuilder.Options);
}
}