Regarding Propagation.NEVER transactions in Spring - spring

Question

I have a question regarding Propagation.NEVER usage with #Transactional in the service layer. I use this on a method of service layer which calls DAO layer method which calls session.save() method of Hibernate.
As NEVER means no transaction should be present, it is executing the service layer method without any error because as there is no session. But this also means save() method which calls in service layer doesn't have a transaction, right? And if it doesn't have a transaction, it should throw an error, right? Can you please correct me why the record is getting stored even without transaction.
Service layer code is as follows:
#Service("userSer")
#Transactional
public class UserServiceImpl implements UserService{
#Autowired
private UserDao userDao;
#Transactional(propagation=Propagation.NEVER)
public void saveUser(User user) {
userDao.create(user);
}
}
DAO layer code is as follows:
#Repository("user")
public class HibernateUserDao implements UserDao{
#Autowired
private SessionFactory sessionFactory;
public Session currentSession() {
return sessionFactory.getCurrentSession();
}
public User create(User user) {
currentSession().save(user);
return user;
}
}
And I am testing from a main method as follows:
public static void main(String[] args) {
ApplicationContext context = new ClassPathXmlApplicationContext("classpath:spring-hibernate-idol.xml");
UserService service = (UserService)context.getBean("userSer");
User u1 = new User();
u1.setPassword("bsk5");
service.saveUser(u1);
System.out.println("Record created finally if this line is printed");
}
Can you please help me out in understanding this.