Setting up a simple test with Cabal

With the Cabal build and packaging system for Haskell, add a simple test program to your build with a couple of easy steps. First, add the following to your project's cabal file: Build-Type: Custom ... flag test description: Build test program. default: False Executable test hs-source-dirs: src, test other-modules: MyModule1, MyModule2 main-is: Main.hs build-depends: base if !flag(test) buildable: