I just released a new end-to-end testing API and visual test viewer for elm-pages Route Modules. It lets you drive your full-stack Elm application in pure Elm tests, stubbing out non-deterministic interactions with the outside world, while emulating the full-stack framework behavior like form submissions, BackendTask resolution lifecycle, etc.
I think this is a game-changer for maintaining real-world applications with elm-pages, and it is one of the superpowers that Elm’s unlocks for Elm-based frameworks. I hope you enjoy!