1. It's hard to guess at the moment how a good interface to the "pure golden" part should look like.
Maybe just produce HUnit assertions, e.g.: goldenVsFile :: FilePath -> FilePath -> IO () -> Assertion That way it works with plain HUnit main = runTestTT $ TestLabel "someAction produce desired output $ goldenVsFile "ref.txt" "out.txt" someAction test-framework main = defaultMain [ testGroup "someAction" [ testCase "produces some desired output" $ goldenVsFile "ref.txt" "out.txt" someAction ] ] Hspec main = hspec $ do describe "someAction" $ do it "produces some desired output" $ do goldenVsFile "ref.txt" "out.txt" someAction and probably every other current or future Haskell test framework. Cheers, Simon