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Test that Interpreter produces correct diffs.

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This commit is contained in:
Rob Rix 2016-06-27 15:28:11 -04:00
parent 2de9468ed1
commit b8ba07522b
1 changed files with 8 additions and 0 deletions
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test/InterpreterSpec.hs
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@ -1,13 +1,17 @@
{-# LANGUAGE DataKinds #-}
module InterpreterSpec where
import Category
import Diff
import Data.Record
import Data.Record.Arbitrary ()
import Interpreter
import Patch
import Prologue
import Syntax
import Term.Arbitrary
import Test.Hspec
import Test.Hspec.QuickCheck
spec :: Spec
spec = parallel $ do
@ -16,3 +20,7 @@ spec = parallel $ do
let termA = cofree $ (StringLiteral .: RNil) :< Leaf "t\776"
termB = cofree $ (StringLiteral .: RNil) :< Leaf "\7831" in
diffTerms (free . Free) ((==) `on` extract) diffCost termA termB `shouldBe` free (Pure (Replace termA termB))
prop "produces correct diffs" $
\ a b -> let diff = diffTerms (free . Free) ((==) `on` extract) diffCost (toTerm a) (toTerm b) :: Diff Text (Record '[Category]) in
(beforeTerm diff, afterTerm diff) `shouldBe` (Just (toTerm a), Just (toTerm b))