🧪Add tests

[zenangst]

Yeah, I think a lot of the tests that we used to have... are broken (hard).
There is work to be done here in order to get a bit of testing into the app.
But don't worry, I've been using and testing the app for... well years now.
That is not an excuse for not having unit tests, we really should.

Anyways, we should add tests 🤡