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51 lines
2.7 KiB
Haskell
51 lines
2.7 KiB
Haskell
{-# LANGUAGE DataKinds #-}
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module Data.RandomWalkSimilarity.Spec where
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import Data.RandomWalkSimilarity
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import Data.Record
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import Diff
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import Info
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import Patch
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import Prologue
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import Syntax
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import Term
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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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let positively = succ . abs
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describe "pqGramDecorator" $ do
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prop "produces grams with stems of the specified length" $
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\ (term, p, q) -> pqGramDecorator (rhead . headF) (positively p) (positively q) (toTerm term :: Term Text (Record '[Text])) `shouldSatisfy` all ((== (positively p)) . length . stem . rhead)
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prop "produces grams with bases of the specified width" $
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\ (term, p, q) -> pqGramDecorator (rhead . headF) (positively p) (positively q) (toTerm term :: Term Text (Record '[Text])) `shouldSatisfy` all ((== (positively q)) . length . base . rhead)
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describe "featureVectorDecorator" $ do
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prop "produces a vector of the specified dimension" $
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\ (term, p, q, d) -> featureVectorDecorator (rhead . headF) (positively p) (positively q) (positively d) (toTerm term :: Term Text (Record '[Text])) `shouldSatisfy` all ((== (positively d)) . length . rhead)
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describe "rws" $ do
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let compare a b = if ((==) `on` category . extract) a b then Just (pure (Replace a b)) else Nothing
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let toTerm' = featureVectorDecorator (category . headF) 2 2 15 . toTerm
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prop "produces correct diffs" . forAll (scale (`div` 4) arbitrary) $
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\ (as, bs) -> let tas = toTerm' <$> (as :: [ArbitraryTerm Text (Record '[Category])])
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tbs = toTerm' <$> (bs :: [ArbitraryTerm Text (Record '[Category])])
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root = cofree . ((Program .: RNil) :<) . Indexed
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diff = free (Free (pure (Program .: RNil) :< Indexed (stripDiff <$> rws compare tas tbs))) in
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(beforeTerm diff, afterTerm diff) `shouldBe` (Just (root (stripTerm <$> tas)), Just (root (stripTerm <$> tbs)))
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-- let toTerm'' c (ArbitraryTerm r f) = toTerm' (ArbitraryTerm (setCategory r c) f)
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prop "produces unbiased deletions" $
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pendingWith "rws is biased in favour of earlier elements"
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-- \ a b c -> let (a', b') = (toTerm'' c a, toTerm'' c (b :: ArbitraryTerm Text (Record '[Category]))) in
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-- fmap stripDiff (rws compare [ a', b' ] [ a' ]) `shouldBe` fmap stripDiff (reverse (rws compare [ b', a' ] [ a' ]))
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prop "produces unbiased insertions" $
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pendingWith "rws is biased in favour of earlier elements"
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-- \ a b c -> let (a', b') = (toTerm'' c a, toTerm'' c (b :: ArbitraryTerm Text (Record '[Category]))) in
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-- fmap stripDiff (rws compare [ a' ] [ a', b' ]) `shouldBe` fmap stripDiff (reverse (rws compare [ a' ] [ b', a' ]))
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