Hey, Eric —
Niffy, as far as I can tell from the commit log, wasn’t released before we built this. But, it looks very cool and seems to abstract away a lot of the incidental complexity associated with a setup like this.
It looks like in our case, using niffy would have involved spinning up some local webservers to serve the expected and actual outcomes to compare against. In this particular case, it’s nice that we can drop that requirement by rolling our own.