restructuring

- renamed newSalt to newPWSalt
- added PWSalt type
- general style cleanup

src/Password.hs

@@ -26,7 +26,7 @@ License along with this program.  If not, see
 
 module Password (
   -- * Data Types
-  PWDatabase, PWData(..), PWPolicy (..),
+  PWDatabase, PWData(..), PWPolicy (..), PWSalt,
   -- ** Lenses
   -- $lenses
   -- *** PWData
@@ -34,7 +34,7 @@ module Password (
   -- *** PWPolicy
   pwLength, pwUpper, pwLower, pwDigits, pwSpecial,
   -- ** Default Instances
-  newPWData, newPWPolicy, newSalt,
+  newPWData, newPWPolicy, newPWSalt,
   -- * Functions
   validatePWPolicy
   ) where
@@ -72,6 +72,9 @@ data PWPolicy = PWPolicy
   -- if @"Nothing"@)
   } deriving (Eq, Show)
 
+-- | the "salt" used to generate a password
+type PWSalt = B.ByteString
+
 -- $lenses The following functions are automatically generated by
 -- @makeLenses@. See the
 -- [lens](http://hackage.haskell.org/package/lens) package for further
@@ -80,10 +83,6 @@ data PWPolicy = PWPolicy
 makeLenses ''PWPolicy
 makeLenses ''PWData
 
--- | default password policy
-newPWPolicy :: PWPolicy
-newPWPolicy = PWPolicy 16 0 0 0 (Just 0)
-
 -- | builds a new @'PWData'@
 newPWData
   :: RandomGen g
@@ -93,16 +92,20 @@ newPWData
   -- ^ the result and new random generator
 newPWData g = (result, g') where
   result = PWData newPWPolicy salt
-  (salt, g') = newSalt g
+  (salt, g') = newPWSalt g
+
+-- | default password policy
+newPWPolicy :: PWPolicy
+newPWPolicy = PWPolicy 16 0 0 0 (Just 0)
 
 -- | builds a new salt
-newSalt
+newPWSalt
   :: RandomGen g
   => g
   -- ^ the random generator to use
-  -> (B.ByteString, g)
-  -- ^ the result and new random number generator
-newSalt g = (result, g2) where
+  -> (PWSalt, g)
+  -- ^ the result and new random generator
+newPWSalt g = (result, g2) where
   result = B.pack $ take 256 $ randoms g1
   (g1, g2) = split g
 

test/Spec.hs

@@ -27,8 +27,8 @@ import System.Exit (exitFailure)
 import Test.HUnit (errors, failures, runTestTT, Test(TestList))
 
 import qualified Spec.NewPWData as NewPWData
-import qualified Spec.NewSalt as NewSalt
-import qualified Spec.PWPolicy as PWPolicy
+import qualified Spec.NewPWPolicy as NewPWPolicy
+import qualified Spec.NewPWSalt as NewPWSalt
 import qualified Spec.ValidatePWPolicy as ValidatePWPolicy
 
 main = do
@@ -37,10 +37,10 @@ main = do
     exitFailure
 
 tests = TestList
-  [ PWPolicy.tests
+  [ NewPWData.tests
+  , NewPWPolicy.tests
+  , NewPWSalt.tests
   , ValidatePWPolicy.tests
-  , NewSalt.tests
-  , NewPWData.tests
   ]
 
 --jl

test/Spec/NewPWData.hs

@@ -35,7 +35,7 @@ tests = TestLabel "newPData" $ TestList
 
 testSalt x = TestLabel "pwSalt" $
   x^.pwSalt ~?= salt where
-    (salt, _) = newSalt g
+    (salt, _) = newPWSalt g
 
 testPolicy x = TestLabel "pwPolicy" $
   x^.pwPolicy ~?= newPWPolicy

test/Spec/NewPWPolicy.hs

@@ -20,7 +20,7 @@ License along with this program.  If not, see
 
 -}
 
-module Spec.PWPolicy (tests) where
+module Spec.NewPWPolicy (tests) where
 
 import Control.Lens ((^.))
 import Test.HUnit (Test(..), (~?=))

test/Spec/NewPWSalt.hs

@@ -20,7 +20,7 @@ License along with this program.  If not, see
 
 -}
 
-module Spec.NewSalt (tests) where
+module Spec.NewPWSalt (tests) where
 
 import qualified Data.ByteString as B
 import System.Random (mkStdGen)
@@ -28,12 +28,12 @@ import Test.HUnit (Test(..), assertBool, (~?=))
 
 import Password
 
-tests = TestLabel "newSalt" $ TestList
+tests = TestLabel "newPWSalt" $ TestList
   [ testLength salt
   , testDiff salt salt'
   ] where
-    (salt, g') = newSalt g
-    (salt', _) = newSalt g'
+    (salt, g') = newPWSalt g
+    (salt', _) = newPWSalt g'
     g = mkStdGen 1
 
 testLength x = TestLabel "salt length" $ B.length x ~?= 256