Injected service doesn't know persisted entity

I am trying to implement a litte integration test using Arquillian and Wildfly 8.2.

The persisting in the test and querying after it works, but not for the injected service.

My test class:

@RunWith(Arquillian.class)
public class VoteServiceTest {
  @Inject
  private VoteRepository voteRepository;

  @Inject
  private EntityManager entityManager;

  @Before
  public void createEntityManager() {
    entityManager.persist(user);
    entityManager.persist(vote);
  }

  @Test
  public void userHasVoted() {
    Assert.assertTrue(entityManager.find(User.class, 1L) != null);
    Assert.assertTrue(voteRepository.findAll().size() == 1);
  }

  @Deployment
  public static JavaArchive createDeployment() {
    return ShrinkWrap.create(JavaArchive.class).addPackages(true, "de/...")
            .addAsResource("META-INF/persistence.xml", "META-INF/persistence.xml")
        .addAsManifestResource(EmptyAsset.INSTANCE, "beans.xml");
  }
}

Injected repository which is missing the entity:

public class VoteRepository implements Serializable {
  @Inject
  protected EntityManager entityManager;

  public List<Vote> findAll() {
    return entityManager.createNamedQuery("Vote.findAll").getResultList();
  }

persistence.xml:

<persistence ...>
    <persistence-unit name="test" transaction-type="RESOURCE_LOCAL">
        <class>de....Vote</class>
        <class>de....User</class>
        <properties>
            <property name="hibernate.hbm2ddl.auto" value="create"/>
            <property name="hibernate.dialect" value="org.hibernate.dialect.HSQLDialect"/>
            <property name="hibernate.connection.driver_class" value="org.hsqldb.jdbcDriver"/>
            <property name="hibernate.connection.url" value="jdbc:hsqldb:mem:test"/>
            <property name="hibernate.show_sql" value="true"/>
        </properties>
    </persistence-unit>
</persistence>

What did I miss?