Running in @QuarkusTest fails with ContextNotActiveException

[tomsontom]

I've a base class like this:

public abstract class BaseReadonlyHandler extends BaseHandler {

    public BaseReadonlyHandler(EntityManager em) {
        super(em);
        // Fails with @QuarkusTest
        this.em.unwrap(Session.class).setDefaultReadOnly(true);
    }
}

@Singleton
public class MyHandler {
  @Inject
  public MyHandler(EntityManager em) {
    super(em);
  }

  // ...
}

Starting quarkus in Dev-Mode all is fine but when trying to write a JUnit-Tests like this:

@QuarkusTest
public class MyHandlerTest {
  @Inject
  public MyHandler handler;
}

leading to the following exception

Caused by: jakarta.enterprise.context.ContextNotActiveException: Cannot use the EntityManager/Session because neither a transaction nor a CDI request context is active. Consider adding @Transactional to your method to automatically activate a transaction, or @ActivateRequestContext if you have valid reasons not to use transactions.
        at io.quarkus.hibernate.orm.runtime.session.TransactionScopedSession.acquireSession(TransactionScopedSession.java:107)
        at io.quarkus.hibernate.orm.runtime.session.TransactionScopedSession.setDefaultReadOnly(TransactionScopedSession.java:671)
        at org.hibernate.engine.spi.SessionLazyDelegator.setDefaultReadOnly(SessionLazyDelegator.java:157)

Is there anything I can do? My current workaround is to put the EM into-Readonly-Model upon first access, which is not too bad but it feels wrong to just make the tests succeed.