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);
}