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86 lines
3.8 KiB
Haskell
86 lines
3.8 KiB
Haskell
module CorpusSpec where
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import Diffing
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import Renderer
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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 Control.DeepSeq
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import Data.Functor.Both
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import qualified Data.ByteString.Char8 as B1
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import Data.List as List
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import Data.Map as Map
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import Data.Maybe
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import Data.Set as Set
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import qualified Data.Text as T
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import qualified Data.Text.Lazy as TL
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import Prelude hiding (fst, snd)
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import qualified Prelude
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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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spec :: Spec
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spec = parallel $ do
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describe "crashers crash" $ runTestsIn "test/crashers-todo/" $ \ a b -> a `deepseq` return (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 :: String -> (String -> String -> 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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mapM_ (\ (formatName, renderer, paths, output) -> it (normalizeName (fst paths) ++ " (" ++ formatName ++ ")") $ testDiff renderer paths output matcher) tests
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correctTests :: (Both FilePath, Maybe FilePath, Maybe FilePath) -> [(String, Renderer a String, Both FilePath, Maybe FilePath)]
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correctTests paths@(_, Nothing, Nothing) = testsForPaths paths
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correctTests paths = List.filter (\(_, _, _, output) -> isJust output) $ testsForPaths paths
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testsForPaths :: (Both FilePath, Maybe FilePath, Maybe FilePath) -> [(String, Renderer a String, Both FilePath, Maybe FilePath)]
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testsForPaths (paths, patch, split) = [ ("patch", P.patch, paths, patch), ("split", testSplit, paths, split) ]
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testSplit :: Renderer a String
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testSplit diff sources = TL.unpack $ Split.split diff sources
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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 [(Both FilePath, Maybe FilePath, Maybe FilePath)]
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examples directory = do
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as <- toDict <$> globFor "*.A.*"
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bs <- toDict <$> globFor "*.B.*"
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patches <- toDict <$> globFor "*.patch.*"
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splits <- toDict <$> globFor "*.split.*"
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let keys = Set.unions $ keysSet <$> [as, bs]
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return $ (\name -> (Both (as ! name, bs ! name), Map.lookup name patches, Map.lookup name splits)) <$> sort (Set.toList keys)
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where
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globFor :: String -> IO [FilePath]
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globFor p = globDir1 (compile p) directory
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toDict list = Map.fromList ((normalizeName <$> list) `Prelude.zip` list)
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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 T.Text String -> Both FilePath -> Maybe FilePath -> (String -> String -> Expectation) -> Expectation
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testDiff renderer paths diff matcher = do
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let parser = parserForFilepath (fst paths)
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sources <- sequence $ readAndTranscodeFile <$> paths
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let sourceBlobs = Both (S.SourceBlob, S.SourceBlob) <*> sources <*> pure mempty <*> paths
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actual <- diffFiles parser renderer sourceBlobs
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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 <- readFile file
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matcher actual expected
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