a.k.a., Writing Programs That Write Tests: Better Testing With ScalaCheck.
Install sbt, then run it:
$ sbt
From the sbt prompt, you can run tests:
sbt:essential-testing-code> test
All code should compile, but there may be some compiler warnings about unused imports or dead code, because the exercises have placeholders for you to complete.
You can also run a specific test by name:
sbt:essential-testing-code> testOnly AbsSpec