### Question:
App { public static void main(final String[] args) throws Exception { final var inMemoryDao = new InMemoryCustomerDao(); performOperationsUsing(inMemoryDao); final var dataSource = createDataSource(); createSchema(dataSource); final var dbDao = new DbCustomerDao(dataSource); performOperationsUsing(dbDao); deleteSchema(dataSource); }  static void main(final String[] args); static List<Customer> generateSampleCustomers();  }### Answer:
@Test void shouldExecuteDaoWithoutException() { assertDoesNotThrow(() -> App.main(new String[]{})); }