Spring Repository interface not covered

[Macadoshis]

I know interaces are not instrumented.
Then how can we validate the coverage of Spring-Data interfaces ??

ex. :

@Repository
public interface MyObjectRepository  {
    MyObject findMyObjectByCodeAndName(String code, String name);
}

public class MyObjectRepositoryTest {

    @Autowired
    private MyObjectRepository myObjectRepository  ;

    @Test
    public void myTest() {
        myObjectRepository.findMyObjectByCodeAndName("foo","bar");  
    }
}

How do you cover such test-cases ?