Q:

How to use @InjectMocks along with @Autowired annotation in Junit

I have a class A which is using 3 differnt classes with autowiring 
public class A () {

    @Autowired
    private B b;

    @Autowired
    private C c;

    @Autowired
    private D d;
}

While testing them, i would like to have only 2 of the classes (B & C) as mocks and have class D to be Autowired as normal running, this code is not working for me:
@RunWith(MockitoJUnitRunner.class)
public class aTest () {

    @InjectMocks
    private A a;

    @Mock
    private B b;

    @Mock
    private C c;

    @Autowired
    private D d;
}

Is it even possible to do so?

A:

It should be something like
@RunWith(SpringJUnit4ClassRunner.class)
public class aTest () {

    @Mock
    private B b;

    @Mock
    private C c;

    @Autowired
    @InjectMocks
    private A a;

}

If you want D to be Autowired dont need to do anything in your Test class. Your Autowired A should have correct instance of D.
Also i think you need to use SpringJUnit4ClassRunner for Autowiring to work, with contextConfiguration set correctly.
Because you are not using MockitoJunitRunner you need to initialize your mocks yourself using 

MockitoAnnotations.initMocks(java.lang.Object testClass)

A:

I was facing same problem and tried the answer by Sajan Chandran. It didn't work in my case because I'm using @SpringBootTest annotation to load only a subset of all my beans. The goal is not to load the beans that I'm mocking since they have lot of other dependencies and configurations. 
And I found the following variant of the solution to work for me, which is usable in normal case also. 
@RunWith(SpringRunner.class)
@SpringBootTest(classes={...classesRequired...})
public class aTest () {

    @Mock
    private B b;

    @Mock
    private C c;

    @Autowired
    @Spy
    private D d;

    @InjectMocks
    private A a;

    @Before
    public void init(){
        MockitoAnnotations.initMocks(this);
    }

}

