public void AddNewProviderAccountTest()
        {
            // Arrange
            var helper  = new TestHelper();
            var options = new DbContextOptionsBuilder <AccountDbContext>()
                          .UseInMemoryDatabase("AddNewProviderAccountTest")
                          .Options;

            using var actContext = new AccountDbContext(options);
            var newProvider = helper.Providers[0];
            var actRepo     = new GenericRepository(actContext, new Mapper());

            // Act
            actRepo.AddProviderAccountAsync(newProvider);
            actContext.SaveChanges();

            // Assert
            using var assertContext = new AccountDbContext(options);
            var assertProvider = assertContext.ProviderAccount.FirstOrDefault(p => p.ProviderId == newProvider.ProviderId);

            Assert.NotNull(assertProvider);
        }