mirror of
https://github.com/github/semantic.git
synced 2024-12-30 10:27:45 +03:00
49 lines
2.6 KiB
Haskell
49 lines
2.6 KiB
Haskell
{-# LANGUAGE DataKinds #-}
|
|
module Data.RandomWalkSimilarity.Spec where
|
|
|
|
import Data.RandomWalkSimilarity
|
|
import Data.Record
|
|
import Diff
|
|
import Info
|
|
import Patch
|
|
import Prologue
|
|
import Syntax
|
|
import Term
|
|
import Term.Arbitrary
|
|
import Test.Hspec
|
|
import Test.Hspec.QuickCheck
|
|
import Test.QuickCheck
|
|
|
|
spec :: Spec
|
|
spec = parallel $ do
|
|
let positively = succ . abs
|
|
describe "pqGramDecorator" $ do
|
|
prop "produces grams with stems of the specified length" $
|
|
\ (term, p, q) -> pqGramDecorator (rhead . headF) (positively p) (positively q) (toTerm term :: Term Text (Record '[Text])) `shouldSatisfy` all ((== (positively p)) . length . stem . rhead)
|
|
|
|
prop "produces grams with bases of the specified width" $
|
|
\ (term, p, q) -> pqGramDecorator (rhead . headF) (positively p) (positively q) (toTerm term :: Term Text (Record '[Text])) `shouldSatisfy` all ((== (positively q)) . length . base . rhead)
|
|
|
|
describe "featureVectorDecorator" $ do
|
|
prop "produces a vector of the specified dimension" $
|
|
\ (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)
|
|
|
|
describe "rws" $ do
|
|
let compare a b = if ((==) `on` category . extract) a b then Just (pure (Replace a b)) else Nothing
|
|
let toTerm' = featureVectorDecorator (category . headF) 2 2 15 . toTerm
|
|
prop "produces correct diffs" . forAll (scale (`div` 4) arbitrary) $
|
|
\ (as, bs) -> let tas = toTerm' <$> (as :: [ArbitraryTerm Text (Record '[Category])])
|
|
tbs = toTerm' <$> (bs :: [ArbitraryTerm Text (Record '[Category])])
|
|
root = cofree . ((Program .: RNil) :<) . Indexed
|
|
diff = free (Free (pure (Program .: RNil) :< Indexed (stripDiff <$> rws compare tas tbs))) in
|
|
(beforeTerm diff, afterTerm diff) `shouldBe` (Just (root (stripTerm <$> tas)), Just (root (stripTerm <$> tbs)))
|
|
|
|
let toTerm'' c (ArbitraryTerm r f) = toTerm' (ArbitraryTerm (setCategory r c) f)
|
|
prop "produces unbiased deletions" $
|
|
\ a b c -> let (a', b') = (toTerm'' c a, toTerm'' c (b :: ArbitraryTerm Text (Record '[Category]))) in
|
|
fmap stripDiff (rws compare [ a', b' ] [ a' ]) `shouldBe` fmap stripDiff (reverse (rws compare [ b', a' ] [ a' ]))
|
|
|
|
prop "produces unbiased insertions" $
|
|
\ a b c -> let (a', b') = (toTerm'' c a, toTerm'' c (b :: ArbitraryTerm Text (Record '[Category]))) in
|
|
fmap stripDiff (rws compare [ a' ] [ a', b' ]) `shouldBe` fmap stripDiff (reverse (rws compare [ a' ] [ b', a' ]))
|