stern-brocot-0.1.0.0: test/Main.hs

{-# LANGUAGE MultiParamTypeClasses #-}

module Main where

import Data.Universe.Class
import Test.SmallCheck
import Test.SmallCheck.Series
import Test.Tasty
import Test.Tasty.SmallCheck

import Numeric.Rational.Positive

main :: IO ()
main = defaultMain $
    testGroup ""
    [testProperty "+-associative" $ \ a b c -> (a + b) + (c :: Qp) == a + (b + c),
     testProperty "+-commutative" $ \ a b -> a + b == (b + a :: Qp),
     testProperty "*-associative" $ \ a b c -> (a * b) * (c :: Qp) == a * (b * c),
     testProperty "*-commutative" $ \ a b -> a * b == (b * a :: Qp),
     testProperty "*-identity" $ \ a -> a * 1 == a && 1 * a == (a :: Qp),
     testProperty "+-distributive" $ \ a b c -> a * (b + c) == (a * b + a * c :: Qp)]

instance Monad m => Serial m Qp where series = generate $ \ d -> take (2^(d+1)-1) universe