- fix checkstyle errors
- tests do not run in order, so each one has to do its own assertions separately from what others did
- the uid of an entity in the database needn't be the same of the one created in-memory, since the uid gets assigned upon inserting in the database
- some database functions return a `Completable` that doesn't do anything until it is subscribed to or awaited, so I added `.awaitBlocking()` where needed
- the data of an entity in-memory does not get updated automatically when the corresponding entity in the database is changed, so some tests have been removed
- `manager.insertSubscription` only inserts recent streams, so they need to have a date set on them (I also made related items hardcoded and not dependent on what the channel is currently doing)
How fast a tests is executed on a shared CI pipeline is not predictable as the build might be throttled because other builds are running.
Therefore adding extremely short timeouts inside the tests - where they can't be changed - is a bad idea.
Removed them for now.
* Replace JUnit asserts with AssertJ in HistoryRecordManagerTest
They provide a wider range of assertions, which allow for more detailed error messages.
Also convert SearchHistoryEntry to kotlin data class for better error messages, since toString() is implemented.
Co-authored-by: Mohammed Anas <triallax@tutanota.com>
