How to mock another service used in a class you are testing when using spring

mocking_anotherservice_with_spring.java

// http://stackoverflow.com/questions/2457239/injecting-mockito-mocks-into-a-spring-bean

// Given this service somewhere
@Service
public class MyService {
    @Autowired
    private MyDAO myDAO;

    public void someMethod() throws SomeExecption {
      
    }
}

// note tthat my context configuration was a little different
@ContextConfiguration(classes = { MvcConfiguration.class })
@RunWith(SpringJUnit4ClassRunner.class)
public class MyServiceTest {
    @Autowired
    private MyService myService;

    private MyDAO myDAOMock;

    @Before
    public void before() {
        myDAOMock = Mockito.mock(MyDAO.class);
        ReflectionTestUtils.setField(myService, "myDAO", myDAOMock);
    }

    // etc
    @Test
    public void atest() {
      doThrow(new SomeException()).when(myDAOMock).someMethod();
    }
}