public void ListDocumentsValid()
        {
            var store = new DocumentStore { ConnectionStringName = AppSettings.DataBaseName };
            store.Initialize();
            var repo = new ValidationRepository(store);

            var customer = new Customer
            {
                City = "Almaville",
                EMail = "*****@*****.**",
                Name = "Customer, Anna",
                Number = "34",
                Street = "Lohengrin",
            };

            customer.Orders.Add(new Order { Amount = 23, Name = "Order 1" });
            customer.Orders.Add(new Order { Amount = 245, Name = "Order 2" });
            customer.Orders.Add(new Order { Amount = 5, Name = "Order 3" });
            customer.Orders.Add(new Order { Amount = 5476, Name = "Order 4" });
            repo.SaveDocument(customer);

            var customer2 = new Customer
            {
                City = "Almaville",
                EMail = "*****@*****.**",
                Name = "Customer, Anna",
                Number = "34",
                Street = "Lohengrin",
            };

            customer2.Orders.Add(new Order { Amount = 23, Name = "Order 1" });
            customer2.Orders.Add(new Order { Amount = 245, Name = "Order 2" });
            customer2.Orders.Add(new Order { Amount = 5, Name = "Order 3" });
            customer2.Orders.Add(new Order { Amount = 5476, Name = "Order 4" });
            repo.SaveDocument(customer2);

            var listDocuments = repo.ListDocuments<Customer>();

            Assert.IsNotNull(listDocuments);
        }