Building tooling like this seems a no-brainer as far as language uptake is concerned. Testing libraries offer a low friction, low risk way to introduce new JVM

Building tooling like this seems a no-brainer as far as language uptake is concerned. Testing libraries offer a low friction, low risk way to introduce new JVM based languages to an existing project. Scalatest was certainly Scala's "foot in the door" for the last project where we managed to sell the switch from Java to Scala. On a related note: I would really like to see an in depth comparison between Scala and Kotlin. The two seem idealogically and syntactically similar.