propellor (0.3.0) unstable; urgency=medium

  * ipv6to4: Ensure interface is brought up automatically on boot.
  * Enabling unattended upgrades now ensures that cron is installed and
    running to perform them.
  * Properties can be scheduled to only be checked after a given time period.
  * Fix bootstrapping of dependencies.
  * Fix compilation on Debian stable.
  * Include security updates in sources.list for stable and testing.
  * Use ssh connection caching, especially when bootstrapping.
  * Properties now run in a Propellor monad, which provides access to
    attributes of the host.

# imported from the archive

1 files changed, 52 insertions, 0 deletions

diff --git a/Utility/QuickCheck.hs b/Utility/QuickCheck.hs
new file mode 100644
index 00000000..7f7234c7
--- /dev/null
+++ b/Utility/QuickCheck.hs
@@ -0,0 +1,52 @@
+{- QuickCheck with additional instances
+ -
+ - Copyright 2012-2014 Joey Hess <joey@kitenet.net>
+ -
+ - Licensed under the GNU GPL version 3 or higher.
+ -}
+
+{-# OPTIONS_GHC -fno-warn-orphans #-}
+{-# LANGUAGE TypeSynonymInstances #-}
+
+module Utility.QuickCheck
+	( module X
+	, module Utility.QuickCheck
+	) where
+
+import Test.QuickCheck as X
+import Data.Time.Clock.POSIX
+import System.Posix.Types
+import qualified Data.Map as M
+import qualified Data.Set as S
+import Control.Applicative
+
+instance (Arbitrary k, Arbitrary v, Eq k, Ord k) => Arbitrary (M.Map k v) where
+	arbitrary = M.fromList <$> arbitrary
+
+instance (Arbitrary v, Eq v, Ord v) => Arbitrary (S.Set v) where
+	arbitrary = S.fromList <$> arbitrary
+
+{- Times before the epoch are excluded. -}
+instance Arbitrary POSIXTime where
+	arbitrary = fromInteger <$> nonNegative arbitrarySizedIntegral
+
+instance Arbitrary EpochTime where
+	arbitrary = fromInteger <$> nonNegative arbitrarySizedIntegral
+
+{- Pids are never negative, or 0. -}
+instance Arbitrary ProcessID where
+	arbitrary = arbitrarySizedBoundedIntegral `suchThat` (> 0)
+
+{- Inodes are never negative. -}
+instance Arbitrary FileID where
+	arbitrary = nonNegative arbitrarySizedIntegral
+
+{- File sizes are never negative. -}
+instance Arbitrary FileOffset where
+	arbitrary = nonNegative arbitrarySizedIntegral
+
+nonNegative :: (Num a, Ord a) => Gen a -> Gen a
+nonNegative g = g `suchThat` (>= 0)
+
+positive :: (Num a, Ord a) => Gen a -> Gen a
+positive g = g `suchThat` (> 0)