CODEWITHSUNDEEP
junitspring-data-jpamockito
SpringUser
SpringUser

Reputation: 1439

Junit mocking error : org.mockito.exceptions.misusing.MissingMethodInvocationException

I am using spring data JPA for creating services and for unit testing I am using Junit and mockito. In following code I am trying to do junit testing for service class.

Room account mapping service class is dependent on Room Investigator mapping service class so I used mockito for mocking room Investigator mapping service class method but that method calling one more method of same class.

I tried like below but I am getting error in mockito. Can any one please tell me how I can do mocking?

TestRoomAccountMappingService class

public class TestRoomAccountMappingService {
    @MockBean
    RoomAccountMappingRepository roomAccountMapRepository;

    @Autowired
    RoomAccountMappingService roomAccountMappingService;

    @Autowired
    RoomInvestigatorMappingService roomInvestMapService;

    @Test
    public void deleteAccountMapping() {

        Integer[] RoomAllocationId= {1839};         

        //here getting error
        Mockito.when(roomInvestMapService.returnRoomWithinClusterByRoomAllocationID(1839)).thenReturn(RoomAllocationId);

        RoomAccountMapping roomAcctMap= new RoomAccountMapping();
        roomAcctMap.setnRoomAllocationId(1);

        List<RoomAccountMapping> roomList= new ArrayList<>();
        roomList.add(roomAcctMap);      

        Mockito.when(roomAccountMapRepository.findByNRoomAllocationId(1839)).thenReturn(roomList);

        Boolean actual = roomAccountMappingService.deleteAccountMapping(1839);

        assertEquals(true, actual );
    }
}

Failure Trace

org.mockito.exceptions.misusing.MissingMethodInvocationException: 
when() requires an argument which has to be 'a method call on a mock'.
For example:
    when(mock.getArticles()).thenReturn(articles);

Also, this error might show up because:
1. you stub either of: final/private/equals()/hashCode() methods.
   Those methods *cannot* be stubbed/verified.
   Mocking methods declared on non-public parent classes is not supported.
2. inside when() you don't call method on mock but on some other object.

    at com.spacestudy.service.TestRoomAccountMappingService.deleteAccountMapping(TestRoomAccountMappingService.java:39)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

Upvotes: 0

Views: 689

Answers (1)

Florian Schaetz
Florian Schaetz

Reputation: 10652

As the error message tells you...

  1. inside when() you don't call method on mock but on some other object.

This might be the case here:

Mockito.when(roomInvestMapService.returnRoomWithinClusterByRoomAllocationID(1839))...

...because:

@Autowired
RoomInvestigatorMappingService roomInvestMapService;

...is probably not a mock, since you don't use @MockBean. At least, to me, that seems currently to be the most plausible explanation.

Upvotes: 1

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