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module UnitTests.Distribution.Client.IndexUtils.Timestamp (tests) where
import Data.Time
import Data.Time.Clock.POSIX
import Distribution.Parsec (simpleParsec)
import Distribution.Pretty (prettyShow)
import Distribution.Client.IndexUtils.Timestamp
import Test.Tasty
import Test.Tasty.QuickCheck
tests :: [TestTree]
tests =
[ testProperty "Timestamp1" prop_timestamp1
, testProperty "Timestamp2" prop_timestamp2
, testProperty "Timestamp3" prop_timestamp3
, testProperty "Timestamp4" prop_timestamp4
, testProperty "Timestamp5" prop_timestamp5
]
-- test unixtime format parsing
prop_timestamp1 :: NonNegative Int -> Bool
prop_timestamp1 (NonNegative t0) = Just t == simpleParsec ('@' : show t0)
where
t = epochTimeToTimestamp $ toEnum t0 :: Timestamp
-- test prettyShow/simpleParse roundtrip
prop_timestamp2 :: Int -> Bool
prop_timestamp2 t0 = simpleParsec (prettyShow t) == Just t
where
t = epochTimeToTimestamp $ toEnum t0 :: Timestamp
-- test prettyShow against reference impl
prop_timestamp3 :: Int -> Bool
prop_timestamp3 t0 = refDisp t == prettyShow t
where
t = epochTimeToTimestamp $ toEnum t0 :: Timestamp
refDisp =
maybe undefined (formatTime undefined "%FT%TZ")
. timestampToUTCTime
-- test utcTimeToTimestamp/timestampToUTCTime roundtrip
prop_timestamp4 :: Int -> Bool
prop_timestamp4 t0 =
(utcTimeToTimestamp <$> timestampToUTCTime t) == Just t
where
t = epochTimeToTimestamp $ toEnum t0 :: Timestamp
prop_timestamp5 :: Int -> Bool
prop_timestamp5 t0 = timestampToUTCTime t == Just ut
where
t = epochTimeToTimestamp $ toEnum t0 :: Timestamp
ut = posixSecondsToUTCTime (fromIntegral t0)
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