Happy to announce the release of a new, tiny property-based test framework: Microspec. Microspec has a clean RSpec/HSpec-style API, depends only on base and QuickCheck, runs unit and property-based tests, and is well under 500 lines of code. If you'd like to add tests to your code but don't like increasing the amount of code you depend on, give Microspec a try: https://hackage.haskell.org/package/microspec Happy hacking! Tom