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37 lines
1.1 KiB
Haskell
37 lines
1.1 KiB
Haskell
{-# LANGUAGE DataKinds #-}
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module DiffSpec where
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import Category
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import Control.Comonad.Trans.Cofree (headF)
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import Data.Functor.Both
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import Data.Functor.Listable
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import RWS
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import Diff
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import Info
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import Interpreter
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import SpecHelpers
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import Term
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import Test.Hspec
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import Test.Hspec.LeanCheck
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spec :: Spec
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spec = parallel $ do
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let decorate = defaultFeatureVectorDecorator (category . headF)
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prop "equality is reflexive" $
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\ a -> let diff = unListableDiff a :: SyntaxDiff '[Category] in
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diff `shouldBe` diff
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prop "equal terms produce identity diffs" $
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\ a -> let term = decorate (unListableF a :: SyntaxTerm '[Category]) in
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diffCost (diffTerms (pure term)) `shouldBe` 0
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describe "beforeTerm" $ do
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prop "recovers the before term" $
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\ a b -> let diff = diffTerms (unListableF <$> both a b :: Both (SyntaxTerm '[Category])) in
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beforeTerm diff `shouldBe` Just (unListableF a)
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describe "afterTerm" $ do
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prop "recovers the after term" $
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\ a b -> let diff = diffTerms (unListableF <$> both a b :: Both (SyntaxTerm '[Category])) in
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afterTerm diff `shouldBe` Just (unListableF b)
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