Rollback error in using Spring DBUnit, Spring Data and embedded H2 database

Question

I've been stuck in a curios error.

I have a small DBUnit Test:

@RunWith(SpringJUnit4ClassRunner.class) 
@ContextConfiguration("classpath:spring/testApplicationContext.xml") 
@Category(Integrationtest.class)
@TestExecutionListeners({ 
    DependencyInjectionTestExecutionListener.class,
    DirtiesContextTestExecutionListener.class,
    TransactionDbUnitTestExecutionListener.class
    })
@DatabaseSetup("classpath:db/wbSchluesselwertData.xml")
public class KontaktrolleRepositoryIntegrationTest {


    @Autowired
    KontaktrolleRepository kontaktrolleRepository;

    @Autowired
    KontaktBeteiligterRepository kontaktBeteiligterRepository;

    @Autowired
    WbSchluesselwertRepository wbSchluesselwertRepository;
........
........
    @Test
    @Transactional
    public void that_Kontaktrolle_Is_Inserted_Into_DB() throws Exception {

        WbSchluesselwert wbRolle1 = wbSchluesselwertRepository.findOne(new Long(11)); 

        KontaktBeteiligter b1 = new KontaktBeteiligterBuilderAws(erzeugtAm).withName("Posteingang")
                .withStandort("Cologne").withOrganization("private").build();


        KontaktBeteiligter result = kontaktBeteiligterRepository.save(b1);

        Kontaktrolle r1 = new KontaktrolleBuilder(erzeugtAm).withBeteiligter(result).withRollenartId(wbRolle1).build();

        Kontaktrolle resultRolle = kontaktrolleRepository.save(r1);

        assertNotNull(resultRolle);
        assertNotNull(resultRolle.getKontaktrolleId());
        assertThat(resultRolle.getKontaktrolleId(), greaterThan(0L));

    }

Nothing more. First I want to search an entry which is prefilled by DBUnit (wbSchluesselwertData.xml). And after that I want to save two entries via Spring Data CrudRepository within a embedded H2 memory Database.

This datasource is wrapped by an HibernateJpaVendorAdapter and the adapter itself in a LocalContainerEntityManagerFactoryBean:

<bean id="emf"
    class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
    <property name="dataSource" ref="dataSource" />
    <property name="jpaVendorAdapter" ref="jpaVendorAdapter" />
    <property name="packagesToScan" value="de.axa.chronik.persistence.domain" />
</bean>

If I run the unit test above I got the following error:

21:21:55,808 DEBUG JpaTransactionManager:594 - Closing JPA EntityManager [org.hibernate.ejb.EntityManagerImpl@f6b9e9] after transaction
21:21:55,808 DEBUG EntityManagerFactoryUtils:338 - Closing JPA EntityManager
21:21:55,809  WARN TestContextManager:397 - Caught exception while allowing TestExecutionListener [com.github.springtestdbunit.TransactionDbUnitTestExecutionListener@4c4b3e] to process 'after' execution for test: method [public void de.axa.chronik.persistence.repository.KontaktrolleRepositoryIntegrationTest.that_Kontaktrolle_Is_Inserted_Into_DB() throws java.lang.Exception], instance [de.axa.chronik.persistence.repository.KontaktrolleRepositoryIntegrationTest@be41d5], exception [null]
org.springframework.transaction.TransactionSystemException: Could not roll back JPA transaction; nested exception is javax.persistence.PersistenceException: unexpected error when rollbacking
    at org.springframework.orm.jpa.JpaTransactionManager.doRollback(JpaTransactionManager.java:544)...............
...........
Caused by: org.hibernate.TransactionException: unable to rollback against JDBC connection
    at org.hibernate.engine.transaction.internal.jdbc.JdbcTransaction.doRollback(JdbcTransaction.java:167)
    at org.hibernate.engine.transaction.spi.AbstractTransactionImpl.rollback(AbstractTransactionImpl.java:209)
    ... 33 more
Caused by: org.h2.jdbc.JdbcSQLException: Das Objekt wurde bereits geschlossen
The object is already closed [90007-175]
    at org.h2.message.DbException.getJdbcSQLException(DbException.java:332)

So the subsequent attempt to persist the entity fails because the connection has been closed. Are there exsisting effects between hibernate persist and the use ob Spring DBUnit which I disregard?

Any help is appreciated. Many thanks in advance.

Regards, Bodo

Answer 1

Try to change your TestExecutionListeners. This setup worked for me:

@TestExecutionListeners({
    DependencyInjectionTestExecutionListener.class,
    DbUnitTestExecutionListener.class,
    TransactionalTestExecutionListener.class
})

There's no org.h2.jdbc.JdbcSQLException: The object is already closed [90007-175] error anymore, and my tests are executed inside a transaction now. BUT changes made in DbUnit's @DatabaseSetup are not rolled back when transaction ends (i.e. after each test case).

Answer 2

As you manually configure the test execution listeners, you need to register the TransactionalTestExecutionListener as otherwise transactions are not started on the test level. This will cause the transaction already being closed when the repository returns an cause exceptions like the one you see.