Mockito thenReturn returns same instance

Question

I have this in Mockito:

when(mockedMergeContext.createNewEntityOfType(IService.class)).thenReturn(new ServiceMock());
         


        

Answer 1

You might want to refactor that into different statements to understand why that happens.

Service svc = new ServiceMock();
when(mockedMergeContext.createNewEntityOfType(IService.class)).thenReturn( svc );

Do you see now why it doesn't work? :)

It's always returning the instance hold in svc, it won't re-evaluate new ServiceMock() each time that the method is invoked.