How to rollback a database transaction when testing services with Spring in JUnit?

Question

I have no problem testing my DAO and services, but when I test INSERTs or UPDATEs I want to rollback the transaction and not effect my database.

Answer 1

You need to extend transaction boundaries to the boundaries of your test method. You can do it by annotating your test method (or the whole test class) as @Transactional:

@Test 
@Transactional
public void testInsert(){ 
    long id=myService.addPerson("JUNIT"); 
    assertNotNull(id); 
    if(id<1){ 
        fail(); 
    } 
} 

You can also use this approach to ensure that data was correctly written before rollback:

@Autowired SessionFactory sf;

@Test 
@Transactional
public void testInsert(){ 
    myService.addPerson("JUNIT"); 
    sf.getCurrentSession().flush();
    sf.getCurrentSession().doWork( ... check database state ... ); 
}