Mockito.mock() 메소드로 만드는 방법

MemberService memberService = mock(MemberService.class);
StudyRepository studyRepository = mock(StudyRepository.class);

@Mock 애노테이션으로 만드는 방법

• JUnit 5 extension으로 MockitoExtension을 사용해야 한다.
• 필드
• 메소드 매개변수

@ExtendWith(MockitoExtension.class)
class StudyServiceTest {

    @Mock MemberService memberService;

    @Mock StudyRepository studyRepository;

@ExtendWith(MockitoExtension.class)
class StudyServiceTest {
    
    @Test
    void createStudyService(@Mock MemberService memberService,
                            @Mock StudyRepository studyRepository) {
        StudyService studyService = new StudyService(memberService, studyRepository);
        assertNotNull(studyService);
    }

}