Implement a test suite for E2E testing and write some initial tests

[developerrowan]

Inevitably, TheRun will continue to grow. Refactors are sure to come within the next half-year, but they won't be the last.

It would then be prudent to implement, and begin writing tests with, a testing framework. This way, we can ensure frontend functionality does not become corrupted throughout (inevitable) refactors.

Vercel provides wonderful documentation on doing it.
https://nextjs.org/docs/pages/building-your-application/optimizing/testing

But we don't need to just set up the suite - setting precedent by writing some good, initial tests is of paramount importance.

[therungg]

Agreed. I used Cypress a lot, but never really bothered to implement it for this frontend. I have extensive testing in the backend, and it would be good to have at least some for the crucial processes in the frontend as well.

[developerrowan]

e2e testing may be tricker than expected, for now closing this. It can be re-opened when we're more comfortable approaching this topic.