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101 lines
4.7 KiB
Haskell
101 lines
4.7 KiB
Haskell
{-# LANGUAGE DataKinds, FlexibleContexts, GeneralizedNewtypeDeriving #-}
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module CorpusSpec where
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import Category
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import Control.DeepSeq
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import Data.Functor.Both
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import Data.List (union)
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import Data.Record
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import qualified Data.Text as T
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import qualified Data.Vector as Vector
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import Diffing
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import GHC.Show (Show(..))
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import Info
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import Prologue hiding (fst, snd, lookup)
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import Renderer
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import qualified Renderer.JSON as J
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import qualified Renderer.Patch as P
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import qualified Renderer.Split as Split
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import qualified Source as S
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import System.FilePath
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import System.FilePath.Glob
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import Test.Hspec
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import Unsafe (unsafeFromJust)
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spec :: Spec
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spec = parallel $ do
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describe "crashers crash" . runTestsIn "test/crashers-todo/" $ \ a b ->
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a `deepseq` pure (a == b) `shouldThrow` anyException
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describe "crashers should not crash" $ runTestsIn "test/crashers/" shouldBe
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describe "todos are incorrect" $ runTestsIn "test/diffs-todo/" shouldNotBe
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describe "should produce the correct diff" $ runTestsIn "test/diffs/" shouldBe
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it "lists example fixtures" $ do
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examples "test/crashers/" `shouldNotReturn` []
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examples "test/diffs/" `shouldNotReturn` []
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where
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runTestsIn :: FilePath -> (Maybe Verbatim -> Maybe Verbatim -> Expectation) -> SpecWith ()
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runTestsIn directory matcher = do
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paths <- runIO $ examples directory
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let tests = correctTests =<< paths
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traverse_ (\ (formatName, renderer, paths, output) ->
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it (maybe "/dev/null" normalizeName (uncurry (<|>) (runJoin paths)) ++ " (" ++ formatName ++ ")") $ testDiff renderer paths output matcher) tests
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correctTests paths@(_, _, Nothing, Nothing, Nothing) = testsForPaths paths
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correctTests paths = filter (\(_, _, _, output) -> isJust output) $ testsForPaths paths
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testsForPaths (aPath, bPath, json, patch, split) = [ ("json", J.json, paths, json), ("patch", P.patch, paths, patch), ("split", Split.split, paths, split) ]
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where paths = both aPath bPath
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-- | Return all the examples from the given directory. Examples are expected to
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-- | have the form "foo.A.js", "foo.B.js", "foo.patch.js". Diffs are not
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-- | required as the test may be verifying that the inputs don't crash.
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examples :: FilePath -> IO [(Maybe FilePath, Maybe FilePath, Maybe FilePath, Maybe FilePath, Maybe FilePath)]
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examples directory = do
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as <- globFor "*.A.*"
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bs <- globFor "*.B.*"
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jsons <- globFor "*.json.*"
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patches <- globFor "*.patch.*"
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splits <- globFor "*.split.*"
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let lookupName name = (lookupNormalized name as, lookupNormalized name bs, lookupNormalized name jsons, lookupNormalized name patches, lookupNormalized name splits)
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let keys = (normalizeName <$> as) `union` (normalizeName <$> bs)
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pure $ lookupName <$> keys
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where
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lookupNormalized name = find $ (== name) . normalizeName
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globFor :: FilePath -> IO [FilePath]
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globFor p = globDir1 (compile p) directory
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-- | Given a test name like "foo.A.js", return "foo.js".
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normalizeName :: FilePath -> FilePath
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normalizeName path = addExtension (dropExtension $ dropExtension path) (takeExtension path)
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-- | Given file paths for A, B, and, optionally, a diff, return whether diffing
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-- | the files will produce the diff. If no diff is provided, then the result
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-- | is true, but the diff will still be calculated.
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testDiff :: Renderer (Record '[Vector.Vector Double, Cost, Range, Category]) -> Both (Maybe FilePath) -> Maybe FilePath -> (Maybe Verbatim -> Maybe Verbatim -> Expectation) -> Expectation
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testDiff renderer paths diff matcher = do
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sources <- traverse (traverse readAndTranscodeFile) paths
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actual <- fmap Verbatim <$> traverse ((pure . concatOutputs . pure) <=< diffFiles' sources) parser
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case diff of
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Nothing -> matcher actual actual
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Just file -> do
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expected <- Verbatim <$> readFile file
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matcher actual (Just expected)
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where diffFiles' sources parser = diffFiles parser renderer (sourceBlobs sources paths)
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parser = parserForFilepath <$> runBothWith (<|>) paths
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sourceBlobs :: Both (Maybe (S.Source Char)) -> Both (Maybe FilePath) -> Both S.SourceBlob
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sourceBlobs sources paths = case runJoin paths of
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(Nothing, Nothing) -> Join (S.emptySourceBlob "", S.emptySourceBlob "")
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(Nothing, Just filepath) -> Join (S.emptySourceBlob "", S.sourceBlob (unsafeFromJust $ snd sources) filepath)
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(Just filepath, Nothing) -> Join (S.sourceBlob (unsafeFromJust $ fst sources) filepath, S.emptySourceBlob "")
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(Just path1, Just path2) -> Join (S.sourceBlob (unsafeFromJust $ fst sources) path1, S.sourceBlob (unsafeFromJust $ snd sources) path2)
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-- | A wrapper around `Text` with a more readable `Show` instance.
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newtype Verbatim = Verbatim Text
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deriving (Eq, NFData)
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instance Show Verbatim where
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showsPrec _ (Verbatim text) = ('\n':) . (T.unpack text ++)
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