public async Task Create_New_User()
        {
            UserManagerMock.SetupSequence(m => m.FindByEmailAsync(It.IsAny <string>()))
            .ReturnsAsync(value: null).ReturnsAsync(new IdentityUser());

            UserManagerMock.Setup(m => m.CreateAsync(It.IsAny <IdentityUser>(), It.IsAny <string>()))
            .ReturnsAsync(IdentityResult.Success);

            UnitOfWorkMock.Setup(um => um.Customers.AddItem(It.IsAny <Customer>())).Verifiable();
            UnitOfWorkMock.Setup(um => um.SaveChanges()).Verifiable();
            var target = new UserController(UserManagerMock.Object, null, null, null, UnitOfWorkMock.Object, null);

            var resultAction = await target.Create(new UserInfoViewModel()
            {
                Customer = new Customer(),
                Email    = "*****@*****.**",
                Password = "******",
                IsAdmin  = false
            }) as RedirectToActionResult;

            Assert.NotNull(resultAction);
            UnitOfWorkMock.Verify(e => e.SaveChanges());
            UnitOfWorkMock.Verify(e => e.Customers.AddItem(It.IsAny <Customer>()));
        }