public async void DeliverOrder_UpdateDataMethodShouldBeCalledOnlyOnce()
        {
            OrderModel expected = GetSampleOrder();
            string     sql      = $"select * from Shipment where Id={expected.Id}";

            _dbDataAccessMock
            .Setup(x => x.LoadDataAsync <OrderModel>(sql, expected.Id))
            .ReturnsAsync(expected);
            var actual = await _orderProcessor.GetOrder(expected.Id);

            DateTime deliveryDate = DateTime.Now;
            await _orderProcessor.DeliverOrder(actual.Id, deliveryDate);

            string deliveryDateFormated = deliveryDate.ToString("yyyy-MM-dd HH:MM:ss");

            sql = $"UPDATE Shipment SET DeliveryDate='{deliveryDateFormated}', State='{OrderState.Delivered}' WHERE Id='{actual.Id}'";
            _dbDataAccessMock.Verify(x => x.UpdateDataAsync <OrderModel>(sql, actual), Times.Once);
        }