Difference between @Mock and @InjectMocks

Question

What is the difference between @Mock and @InjectMocks in Mockito framework?

Answer 1

@Mock makes a mock. @InjectMocks generates an example of the class and injects the mocks that are designed with the @Mock (or @Spy) annotations within this case.

See that you must practice @RunWith(MockitoJUnitRunner.class) or Mockito.initMocks(this) to initialize certain mocks and inject them.

@RunWith(MockitoJUnitRunner.class)

public class SomeManagerTest {

    @InjectMocks

    private SomeManager someManager;

    @Mock

    private SomeDependency someDependency; // this will be injected into someManager

     //tests...

}