### Relevant Articles:

- [Mockito.mock() vs @Mock vs @MockBean](http://www.baeldung.com/java-spring-mockito-mock-mockbean)
- [A Quick Guide to @TestPropertySource](https://www.baeldung.com/spring-test-property-source)
- [Guide to ReflectionTestUtils for Unit Testing](https://www.baeldung.com/spring-reflection-test-utils)