Mocking for Unit Test using Mockito

Mocking for Unit Test using Mockito

Transcript

1. MOCKING FOR UNIT TEST USING MOCKITO
2. MOCKING FOR UNIT TEST USING MOCKITO EKO KURNIAWAN KHANNEDY ▸ Principal R&D Engineer at Blibli.com ▸ Part of R&D Team at Blibli.com ▸ eko.k.khannedy@gdn-commerce.com
3. MOCKING FOR UNIT TEST USING MOCKITO AGENDA ▸ Mocking ▸ Stubbing ▸ Verification ▸ Capturing
4. MOCKING MOCKING FOR UNIT TEST
5. MOCKING IS CREATING OBJECTS THAT MIMIC THE BEHAVIOR OF REAL OBJECTS What is Mocking? MOCKING FOR UNIT TEST USING MOCKITO
7. MOCKING FOR UNIT TEST USING MOCKITO MOCKING USING MOCKITO import static org.mockito.Mockito.*; HttpServletRequest request = mock(HttpServletRequest.class);
8. MOCKING FOR UNIT TEST USING MOCKITO MOCKING USING MOCKITO JUNIT RULE @Rule
 public MockitoRule mockitoRule = MockitoJUnit.rule(); @Mock
 private HttpServletRequest request;
9. MOCKING FOR UNIT TEST USING MOCKITO INJECTING MOCK WITH MOCKITO @Rule
 public MockitoRule mockitoRule = MockitoJUnit.rule(); @Mock
 private HttpServletRequest request; @InjectMocks
 private MyController controller;
10. STUBBING MOCKING FOR UNIT TEST
11. ADD BEHAVIOR TO MOCKING OBJECT What is Stubbing? MOCKING FOR UNIT TEST USING MOCKITO
12. MOCKING FOR UNIT TEST USING MOCKITO STUBBING USING MOCKITO when(request.getParameter("name")).thenReturn(...); assertEquals(..., request.getParameter("name")); when(request.getParameter("error")).thenThrown(...); request.getParameter("error"); // throw exception when(request.getParameter("return")).thenAnswer(...);
13. VERIFICATION MOCKING FOR UNIT TEST
14. VERIFY INTERACTION TO MOCKING OBJECT What is Verification? MOCKING FOR UNIT TEST USING MOCKITO
15. MOCKING FOR UNIT TEST USING MOCKITO STUBING USING MOCKITO verify(request).getParameter("name"); verify(request, times(2)).getParameter("..."); verifyNoMoreInteractions(request);
16. CAPTURING MOCKING FOR UNIT TEST
17. CAPTURING VALUE THAT INTERACT WITH MOCKING OBJECT What is Capturing? MOCKING FOR UNIT TEST USING MOCKITO
18. MOCKING FOR UNIT TEST USING MOCKITO CAPTURING USING MOCKITO JUNIT RULE @Captor
 private ArgumentCaptor<Merchant> merchantCaptor;
19. MOCKING FOR UNIT TEST USING MOCKITO GET VALUE FROM CAPTOR verify(merchantRepository).save(merchantCaptor.capture()); Merchant merchant = merchantCaptor.getValue();
20. DEMO
21. MOCKING FOR UNIT TEST USING MOCKITO REFERENCES ▸ https://github.com/mockito/mockito/wiki ▸ https://docs.spring.io/spring-boot/docs/current/reference/html/boot-features- testing.html