This looks like a unit test for MockAnnotationProcessor.

Let's rework the coverage for the feature. I really like the test cases you have, I wouldn't add anything more. However, let's test it out via standard @Mock annotation used and get rid of MockAnnotationBuilder. You should be able to cover all cases without directly calling the MockAnnotationProcessor. You can explicitly call MockitoAnnotations.initMocks() and catch any exceptions. If needed, you can remove the 'extends TestBase'.