Start writing some frontend tests

[razzeee]

Probably using https://nextjs.org/docs/testing#jest-and-react-testing-library

[Claudio-code]

@razzeee What are the main components of the frontend that should be tested more?

[razzeee]

Btw, I would probably look at playwright and not cypress, but it's been a while.

I'm actually not too sure, I can't think of anything specific, that keeps breaking, but tests usually help you anyway. I would guess, that the logged in part would have the most value, but it's probably also the hardest to do.

[Claudio-code]

So the login tests should focus on the ProviderLink component that redirects to the provider's login route, right?

[Claudio-code]

@razzeee maded one pr with some tests to login, i try remove duplicate code and organize tests but i not have much experience with jest if you can review