brew install haskell-platform
cd cis194
cabal install hspec
cabal configure --enable-test
cabal build
cabal test

cabal configure --enable-tests && cabal build && cabal test

:m +Test.QuickCheck
:l src/Cis194/Hw/Week1.hs 

-- define a fx that generates data
let negInts = choose(-10000000, -1)

-- define a Property that runs function and asserts something about result
let toDigitsEmpty x = (toDigits x) == []

-- run QuickCheck to validate property
quickCheck (forAll negInts toDigitsEmpty)