{-# LANGUAGE CPP, DeriveGeneric, OverloadedStrings, ScopedTypeVariables #-} module UnitTests (ioTests, tests) where import Control.Monad (forM) import Data.Aeson (decode, eitherDecode, encode, genericToJSON, genericToEncoding) import Data.Aeson.Encode (encodeToTextBuilder) import Data.Aeson.Types (ToJSON(..), Value, camelTo, camelTo2, defaultOptions) import Data.Char (toUpper) import Data.Time (UTCTime) import Data.Time.Format (parseTime) import GHC.Generics (Generic) import Test.Framework (Test, testGroup) import Test.Framework.Providers.HUnit (testCase) import Test.HUnit (Assertion, assertFailure, assertEqual) import qualified Data.ByteString.Lazy.Char8 as L import qualified Data.Text.Lazy.Builder as TLB import qualified Data.Text.Lazy.Encoding as TLE import qualified Data.Text.Lazy as LT import qualified Data.Text.Lazy.Encoding as LT #if MIN_VERSION_time(1,5,0) import Data.Time.Format (defaultTimeLocale) #else import System.Locale (defaultTimeLocale) #endif tests :: Test tests = testGroup "unit" [ testGroup "camelCase" [ testCase "camelTo" $ roundTripCamel "aName" , testCase "camelTo" $ roundTripCamel "another" , testCase "camelTo" $ roundTripCamel "someOtherName" , testCase "camelTo" $ assertEqual "" "camel_apicase" (camelTo '_' "CamelAPICase") , testCase "camelTo2" $ roundTripCamel2 "aName" , testCase "camelTo2" $ roundTripCamel2 "another" , testCase "camelTo2" $ roundTripCamel2 "someOtherName" , testCase "camelTo2" $ assertEqual "" "camel_api_case" (camelTo2 '_' "CamelAPICase") ] , testGroup "encoding" [ testCase "goodProducer" $ goodProducer ] , testGroup "utctime" [ testCase "good" $ utcTimeGood , testCase "bad" $ utcTimeBad ] ] roundTripCamel :: String -> Assertion roundTripCamel name = assertEqual "" name (camelFrom '_' $ camelTo '_' name) roundTripCamel2 :: String -> Assertion roundTripCamel2 name = assertEqual "" name (camelFrom '_' $ camelTo2 '_' name) camelFrom :: Char -> String -> String camelFrom c s = let (p:ps) = split c s in concat $ p : map capitalize ps where split c s = map L.unpack $ L.split c $ L.pack s capitalize t = toUpper (head t) : tail t data Wibble = Wibble { wibbleString :: String , wibbleInt :: Int } deriving (Generic, Show) instance ToJSON Wibble where toJSON = genericToJSON defaultOptions toEncoding = genericToEncoding defaultOptions -- Test that if we put a bomb in a data structure, but only demand -- part of it via lazy encoding, we do not unexpectedly fail. goodProducer :: Assertion goodProducer = assertEqual "partial encoding should not explode on undefined" '{' (L.head (encode wibble)) where wibble = Wibble { wibbleString = replicate 4030 'a' , wibbleInt = undefined } -- Test decoding various UTC time formats -- -- Note: the incomplete pattern matches for UTCTimes are completely -- intentional. The test expects these parses to succeed. If the -- pattern matches fails, there's a bug in either the test or in aeson -- and needs to be investigated. utcTimeGood :: Assertion utcTimeGood = do let ts1 = "2015-01-01T12:13:00.00Z" :: LT.Text let ts2 = "2015-01-01T12:13:00Z" :: LT.Text -- 'T' between date and time is not required, can be space let ts3 = "2015-01-03 12:13:00.00Z" :: LT.Text let ts4 = "2015-01-03 12:13:00.125Z" :: LT.Text let (Just (t1 :: UTCTime)) = parseWithAeson ts1 let (Just (t2 :: UTCTime)) = parseWithAeson ts2 let (Just (t3 :: UTCTime)) = parseWithAeson ts3 let (Just (t4 :: UTCTime)) = parseWithAeson ts4 assertEqual "utctime" (parseWithRead "%FT%T%QZ" ts1) t1 assertEqual "utctime" (parseWithRead "%FT%T%QZ" ts2) t2 assertEqual "utctime" (parseWithRead "%F %T%QZ" ts3) t3 assertEqual "utctime" (parseWithRead "%F %T%QZ" ts4) t4 -- Time zones. Both +HHMM and +HH:MM are allowed for timezone -- offset, and MM may be omitted. let ts5 = "2015-01-01T12:30:00.00+00" :: LT.Text let ts6 = "2015-01-01T12:30:00.00+01:15" :: LT.Text let ts7 = "2015-01-01T12:30:00.00-02" :: LT.Text let ts8 = "2015-01-01T22:00:00.00-03" :: LT.Text let ts9 = "2015-01-01T22:00:00.00-04:30" :: LT.Text let (Just (t5 :: UTCTime)) = parseWithAeson ts5 let (Just (t6 :: UTCTime)) = parseWithAeson ts6 let (Just (t7 :: UTCTime)) = parseWithAeson ts7 let (Just (t8 :: UTCTime)) = parseWithAeson ts8 let (Just (t9 :: UTCTime)) = parseWithAeson ts9 assertEqual "utctime" (parseWithRead "%FT%T%QZ" "2015-01-01T12:30:00.00Z") t5 assertEqual "utctime" (parseWithRead "%FT%T%QZ" "2015-01-01T11:15:00.00Z") t6 assertEqual "utctime" (parseWithRead "%FT%T%QZ" "2015-01-01T14:30:00Z") t7 -- ts8 wraps around to the next day in UTC assertEqual "utctime" (parseWithRead "%FT%T%QZ" "2015-01-02T01:00:00Z") t8 assertEqual "utctime" (parseWithRead "%FT%T%QZ" "2015-01-02T02:30:00Z") t9 where parseWithRead :: String -> LT.Text -> UTCTime parseWithRead f s = case parseTime defaultTimeLocale f . LT.unpack $ s of Nothing -> error "parseTime input malformed" Just t -> t parseWithAeson :: LT.Text -> Maybe UTCTime parseWithAeson s = decode . LT.encodeUtf8 $ (LT.concat ["\"", s, "\""]) -- Test that a few non-timezone qualified timestamp formats get -- rejected if decoding to UTCTime. utcTimeBad :: Assertion utcTimeBad = do verifyFailParse "2000-01-01T12:13:00" -- missing Zulu time not allowed (some TZ required) verifyFailParse "2000-01-01 12:13:00" -- missing Zulu time not allowed (some TZ required) verifyFailParse "2000-01-01" -- date only not OK verifyFailParse "2000-01-01Z" -- date only not OK verifyFailParse "2015-01-01T12:30:00.00+00Z" -- no Zulu if offset given verifyFailParse "2015-01-01T12:30:00.00+00:00Z" -- no Zulu if offset given verifyFailParse "2015-01-03 12:13:00.Z" -- decimal at the end but no digits where verifyFailParse (s :: LT.Text) = let (dec :: Maybe UTCTime) = decode . LT.encodeUtf8 $ (LT.concat ["\"", s, "\""]) in assertEqual "verify failure" Nothing dec ------------------------------------------------------------------------------ -- Comparison between bytestring and text encoders ------------------------------------------------------------------------------ ioTests :: IO [Test] ioTests = do enc <- encoderComparisonTests return [enc] encoderComparisonTests :: IO Test encoderComparisonTests = do encoderTests <- forM testFiles $ \file0 -> do let file = "benchmarks/json-data/" ++ file0 return $ testCase file $ do inp <- L.readFile file case eitherDecode inp of Left err -> assertFailure $ "Decoding failure: " ++ err Right val -> assertEqual "" (encode val) (encodeViaText val) return $ testGroup "encoders" encoderTests where encodeViaText :: Value -> L.ByteString encodeViaText = TLE.encodeUtf8 . TLB.toLazyText . encodeToTextBuilder . toJSON testFiles = [ "example.json" , "integers.json" , "jp100.json" , "numbers.json" , "twitter10.json" , "twitter20.json" , "geometry.json" , "jp10.json" , "jp50.json" , "twitter1.json" , "twitter100.json" , "twitter50.json" ]