public void FindTestNotFound()
        {
            // Arrange
            var customerRepository = new CustomerRepository();

            // Act
            var result = customerRepository.GetById(1000);

            // Assert
            Assert.IsNull (result);
        }
        public void FindExistingCustomer()
        {
            // Arrange
            var customerRepository = new CustomerRepository();

            // Act
            var result = customerRepository.GetById(1);

            // Assert
            Assert.IsNotNull(result);
            Assert.AreEqual(1, result.Id);
            Assert.AreEqual("Foo", result.FirstName);
            Assert.AreEqual("Bar", result.LastName);
        }