refactor tests

[renedupont]

relates to #638

I actually started only out to get rid of the @InjectMock in the test but somehow ended up in refactoring more than that:

• removed in a handful of service tests classes the usage of SpringBootTest, DirtiesContext, MockBean and Autowired annotations to only use InjectMocks and Mock because it is way faster and sufficient.
• moved identical code of base- and crowd auth test config into its own auth config class and added IODSAuthnzAdapter mock bean and EhCache bean to it
• Replaced manual creation of MockMvc by using @AutoConfigureMockMvc in every class except the ones that require to run without spring security
• applied some Java8+ ways of coding, removed dead/unnecessary code, ...

[stitakis]

@renedupont fyi... MailAdapterTest is failing in my dev env when I run all tests together. Something related to a missing dependency. I'm trying to figure out, what is the root of the problem.

[stitakis]

@renedupont this unit test is failing

MailAdapterTest > notifyUsersAboutProjectMailEnabled() FAILED
    org.mockito.exceptions.verification.WantedButNotInvoked at MailAdapterTest.java:55
2021-01-20 21:49:50 INFO  o.s.s.c.ThreadPoolTaskExecutor - Shutting down ExecutorService 'applicationTaskExecutor'
2021-01-20 21:49:50 INFO  o.s.c.e.EhCacheManagerFactoryBean - Shutting down EhCache CacheManager

[renedupont]

@stitakis I know, it is not failing locally, therefore I have a hard time fixing it 😄 , but I have an idea what the issue is (lambda expression) and will try to fix the test.