App { public static void main(String[] args) { CustomerDaoImpl customerDao = new CustomerDaoImpl(generateSampleCustomers()); System.out.println("customerDao.getAllCustomers(): " + customerDao.getAllCustomers()); System.out.println("customerDao.getCusterById(2): " + customerDao.getCusterById(2)); Customer customer = new Customer(4, "Dan", "Danson"); customerDao.addCustomer(customer); System.out.println("customerDao.getAllCustomers(): " + customerDao.getAllCustomers()); customer.setFirstName("Daniel"); customer.setLastName("Danielson"); customerDao.updateCustomer(customer); System.out.println("customerDao.getAllCustomers(): " + customerDao.getAllCustomers()); customerDao.deleteCustomer(customer); System.out.println("customerDao.getAllCustomers(): " + customerDao.getAllCustomers()); }  static void main(String[] args); static List<Customer> generateSampleCustomers();  }
@Test public void test() { String[] args = {}; App.main(args); }