Can SwitchYardTestKit be used to test EJBs, or can Arquillian test SwitchYard Services?

Issue

• Beans are annotated to be both SwitchYard Services and EJBs. Can SwitchYardTestKit be used to test both aspects? Can Arquillian?
• We wrote unit tests for a SwitchYard project using SwithYardRunner, but a remote EJB reference does not get initialised by the framework (we are using an @EJB annotation) and we cannot get hold of the SwitchYard bean instance to manually set a mock.

@Service(SampleService.class)
public class SampleServiceImpl implements SampleService {
    @EJB(lookup = "...")
    private AnotherRemoteService reemoteService;

• How are unit tests written in this situation?