Increase test coverage

[sharkwouter]

Currently we're running into issues because we are not really testing much and end up making breaking changes without noticing. I think we should be working on improving this. I propose unit tests to be build for the following:

• Both types of authentication.
• Changing the settings.
• All functions which have routes.
• Tests for all endpoints to check if authentication is asked like expected.

I think this would be most of what would be needed.

[sharkwouter]

PR #76 adds tests for my functions which have routes.

[Samsagax]

This is an ongoing process and a good practice for all new code. Most of the new PRs should have them.

Is still relevant as an issue?

[sharkwouter]

I think out of the tasks set here, only one was worked on. This would be adding tests for functions which have routes. The other tasks are mainly security things.

[Samsagax]

We should add two more files then: one requesting all our paths without authenticating and another requesting all our paths authenticated.

I'll get into that