geval/test/Spec.hs

26 lines
843 B
Haskell

import Test.Hspec
import GEval
import qualified Test.HUnit as HU
main :: IO ()
main = hspec $ do
describe "mean square error" $ do
it "simple test" $ do
geval (defaultGEvalSpecification {gesExpectedDirectory=Just "test/mse-simple/mse-simple", gesOutDirectory="test/mse-simple/mse-simple-solution"}) `shouldReturnAlmost` 0.64549722436790
class AEq a where
(=~) :: a -> a -> Bool
instance AEq Double where
x =~ y = abs ( x - y ) < (1.0e-8 :: Double)
(@=~?) :: (Show a, AEq a) => a -> a -> HU.Assertion
(@=~?) expected actual = expected =~ actual HU.@? assertionMsg
where
assertionMsg = "Expected : " ++ show expected ++
"\nActual : " ++ show actual
shouldReturnAlmost :: (AEq a, Show a, Eq a) => IO a -> a -> Expectation
shouldReturnAlmost action expected = action >>= (@=~? expected)