[alexbanks]

> Wanna underline here that system tests are slow, unit tests are fast.

System tests are slow but, in my experience, are far far far more valuable medium and long term. Unit tests are fast and relatively unhelpful.

[hderms]

Imo the value of unit tests is partially a record for others to see "hey look, this thing has a lot of it's bases covered".

Especially if you're building a component that is intended to be reused all over the place, would anyone have confidence in reusing it if it wasn't at least tested in isolation?