RegistrationExampleServiceTest.java

public class RegistrationExampleServiceTest {

    @Rule
    public DBITestRule database = new DBITestRule();

    @Test(expected = RegistrationException.class)
    public void testUserRegistration() throws RegistrationException {
        UserDAO userDAO = database.getDbi().onDemand(UserDAO.class);
        RegistrationExampleService service = database.getDbi().onDemand(RegistrationExampleService.class);

        User user = new User("test@email.com", "password");
        userDAO.insert(user);

        service.createUser("google.com", "test@email.com", "pass");
    }

}