Expand tests for the apiserver

Currently just some basic GET queries are tested, this should be expanded to at least perform a simple right and wrong query on every function, to catch glaring bugs. Finer testing can should be added soon after.

mentioned in merge request !1 (merged)

During the code reading i pushed this a little bit. We have now more less tests for every module.

What bothers me a little bit is the dependency management. I would like to have a possibility to define my own settings for testing (currently they are apiserver/config.env). They can be overwritten by env variables (which is very good), but not easily from code. What makes clean up after the test a little bit tedious. For userdb the problem is circumvented by dependency-injection, perhaps we should seek similar solution for storage? (just an idea).

Probably for integration tests we will use env variables so there is no problem.

closed