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37 lines
1.3 KiB
Haskell
37 lines
1.3 KiB
Haskell
module TermSpec where
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import ArbitraryTerm
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import Data.String
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import Data.Text.Arbitrary ()
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import Diff
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import Diff.Arbitrary
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import Interpreter
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import Prologue
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import Term.Arbitrary
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import Test.Hspec
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import Test.Hspec.QuickCheck
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import Test.QuickCheck
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spec :: Spec
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spec = parallel $ do
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describe "Term" $ do
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prop "equality is reflexive" $
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\ a -> toTerm a == toTerm (a :: ArbitraryTerm String ())
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describe "ArbitraryTerm" $
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prop "generates terms of a specific size" $ forAll ((arbitrary >>= \ n -> (,) n <$> termOfSize n) `suchThat` ((> 0) . fst)) $
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\ (n, term) -> arbitraryTermSize (term :: ArbitraryTerm String ()) `shouldBe` n
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describe "ArbitraryDiff" $
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prop "generates diffs of a specific size" $ forAll ((arbitrary >>= \ n -> (,) n <$> diffOfSize n) `suchThat` ((> 0) . fst)) $
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\ (n, diff) -> arbitraryDiffSize (diff :: ArbitraryDiff String ()) `shouldBe` n
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describe "Diff" $ do
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prop "equality is reflexive" $
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\ a b -> let diff = diffTerms (free . Free) (==) diffCost (toTerm a) (toTerm (b :: ArbitraryTerm String CategorySet)) in
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diff == diff
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prop "equal terms produce identity diffs" $
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\ a -> let term = toTerm (a :: ArbitraryTerm String CategorySet) in
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diffCost (diffTerms (free . Free) (==) diffCost term term) == 0
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