module Semantic.Spec (spec) where

import Data.Diff
import Data.Patch
import System.Exit

import SpecHelpers


spec :: Spec
spec = parallel $ do
  describe "parseBlob" $ do
    it "throws if not given a language" $ do
      runTask (parseBlob SExpressionTermRenderer methodsBlob { blobLanguage = Nothing }) `shouldThrow` (\ code -> case code of
        ExitFailure 1 -> True
        _ -> False)

    it "renders with the specified renderer" $ do
      output <- fmap toOutput . runTask $ parseBlob SExpressionTermRenderer methodsBlob
      output `shouldBe` "(Program\n  (Method\n    (Empty)\n    (Identifier)\n    ([])))\n"

  describe "diffTermPair" $ do
    it "produces an Insert when the first term is missing" $ do
      result <- runTask (diffTermPair replacing (That (termIn () [])))
      result `shouldBe` (Diff (Patch (Insert (In () []))) :: Diff [] () ())

    it "produces a Delete when the second term is missing" $ do
      result <- runTask (diffTermPair replacing (This (termIn () [])))
      result `shouldBe` (Diff (Patch (Delete (In () []))) :: Diff [] () ())

  where
    methodsBlob = Blob "def foo\nend\n" "methods.rb" (Just Ruby)