CODEWITHSUNDEEP
javaspring-bootjunitmockitojunit5
Rick
Rick

Reputation: 1

Junit5 Mockito @InjecctMocks not working with MockMvc

MockMvc calling the controller but unable to creating @Autowired objects in controller class: AuthControllerTest.java

@ExtendWith(SpringExtension.class)
@ExtendWith(MockitoExtension.class)
class AuthControllerTest {

    private MockMvc mockMvc;

    @InjectMocks
    private AuthController authController;

    @BeforeEach
    void setUp() {
        mockMvc = MockMvcBuilders.standaloneSetup(authController)
                .build();
    }

    @Test
    void getToken() throws Exception{
        mockMvc.perform(post("/auth/token")
                .contentType(MediaType.APPLICATION_JSON)
                .content("{\"username\" : \"Santa Clause\", \"password\" : \"1223\" }")
                .accept(MediaType.APPLICATION_JSON))
                .andExpect(status().isOk())
                .andExpect(jsonPath("$.status").value("Success"))
                .andExpect(jsonPath("$.result").exists())
                .andExpect(jsonPath("$.result.username").exists())
                .andExpect(jsonPath("$.result.token").exists())
                .andDo(print());
    }
}

AuthController.java

@RestController
@RequestMapping("/auth")
public class AuthController extends ContextService {

    private static final Logger logger = LoggerFactory.getLogger(AuthController.class);

    @Autowired
    IAuthManagement authManagement;

    @PostMapping("/token")
    public ResponseEntity getToken(@RequestBody AuthenticationDTO data) throws UserException {
        logger.info("\nCreating a new Token for user from credentials passed. *** "+data.getUsername()+"-->"+data.getPassword()+"-->"+authManagement);
        return authManagement.getToken(data);
    }

Output:

Creating a new Token for user from credentials passed. *** Santa Clause-->1223-->null
org.springframework.web.util.NestedServletException: Request processing failed; nested exception is java.lang.NullPointerException

    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1014)
    at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:909)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:660)
    at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883)
    at org.springframework.test.web.servlet.TestDispatcherServlet.service(TestDispatcherServlet.java:72)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)

@InjectMocks is not injecting anything because authManagement is null and hence the nullPointerException. Can anyone please help me to solve the issue.

Upvotes: 0

Views: 1734

Answers (1)

codeMan
codeMan

Reputation: 5758

You need to mock IAuthManagement authManagement;

In your test class add something like this..

@Mock
IAuthManagement authManagement;

In addition to this you'll have to mock your service method too. https://www.petrikainulainen.net/programming/spring-framework/unit-testing-of-spring-mvc-controllers-normal-controllers/

In the above tutorial take a look at the test class, line 50, you'll have to do something like.. when() so that it won't return null

Upvotes: 1

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