public void CustomerQueryExceptionTest()
        {
            // arrange
            var options = new DbContextOptionsBuilder <StoreApp_DbContext>()
                          .UseInMemoryDatabase(databaseName: "CustomerQueryExceptionTest")
                          .Options;
            CustomerQueries check = new CustomerQueries();

            // assert
            check.CustomerSearch("yes", "no");
        }
        /// <summary>
        /// input/output for the process of looking up customers by name with all
        /// the validation taking place along the way and finally displaying
        /// the customers meeting the search parameters.
        /// </summary>
        public void CustomerSearch()
        {
            CustomerCreation validation = new CustomerCreation();

            Console.WriteLine("Please enter a customer's partial or full first name.");
            string firstName = Console.ReadLine();

            if (firstName == "cancel")
            {
                return;
            }

            // check if valid first name
            while (firstName != "" && !validation.IsValidName(firstName))
            {
                Console.WriteLine("Invalid first name, please enter another or an empty string.");
                firstName = Console.ReadLine();
                if (firstName == "cancel")
                {
                    return;
                }
            }

            Console.WriteLine("Please enter a customer's partial or full last name.");
            string lastName = Console.ReadLine();

            if (lastName == "cancel")
            {
                return;
            }

            // check if valid last name
            while (lastName != "" && !validation.IsValidName(lastName))
            {
                Console.WriteLine("Invalid last name, please enter another or an empty string.");
                lastName = Console.ReadLine();
                if (lastName == "cancel")
                {
                    return;
                }
            }

            CustomerQueries search            = new CustomerQueries();
            var             searchedCustomers = search.CustomerSearch(firstName, lastName);

            // check if any customers have this first/last name
            if (searchedCustomers.Count() == 0)
            {
                Console.WriteLine("There are no Customers matching the search parameters");
            }
            else
            {
                // display list of customers fitting the first/last name
                Console.WriteLine($"ID\tFirst Name\tLast Name\tUsername");
                foreach (var c in searchedCustomers)
                {
                    Console.WriteLine($"{c.CustomerID}\t{c.FirstName}" +
                                      $"\t\t{c.LastName}\t\t{c.UserName}");
                }
                Console.Write("Search Complete! ");
            }
            Console.WriteLine("Press enter to return to the menu");
            Console.ReadLine();
        }