make gameWon and gameTied return Maybe Bool instead of Bool

src/Mtlstats/Actions.hs

@@ -30,6 +30,7 @@ module Mtlstats.Actions
   , overtimeCheck
   ) where
 
+import Data.Maybe (fromMaybe)
 import Lens.Micro (over, (^.), (&), (.~), (?~), (%~))
 
 import Mtlstats.Types
@@ -63,10 +64,10 @@ removeChar = inputBuffer %~ \case
 -- | Determines whether or not to perform a check for overtime
 overtimeCheck :: ProgState -> ProgState
 overtimeCheck s
-  | gameTied (s^.progMode.gameStateL) =
+  | fromMaybe False $ gameTied $ s^.progMode.gameStateL =
     s & progMode.gameStateL
     %~ (homeScore .~ Nothing)
     .  (awayScore .~ Nothing)
-  | gameWon (s^.progMode.gameStateL) =
+  | fromMaybe False $ gameWon $ s^.progMode.gameStateL =
     s & progMode.gameStateL.overtimeFlag ?~ False
   | otherwise  = s

src/Mtlstats/Types.hs

@@ -493,17 +493,13 @@ otherScore s = case s ^. gameType of
   Just AwayGame -> s ^. homeScore
   Nothing       -> Nothing
 
--- | Checks if the game was won (returns 'False' if unknown)
-gameWon :: GameState -> Bool
-gameWon gs = case (,) <$> teamScore gs <*> otherScore gs of
-  Just (team, other) -> team > other
-  Nothing            -> False
+-- | Checks if the game was won
+gameWon :: GameState -> Maybe Bool
+gameWon gs = (>) <$> teamScore gs <*> otherScore gs
 
--- | Checks if the game has tied (retuns 'False' if unknown)
-gameTied :: GameState -> Bool
-gameTied gs = case (,) <$> gs^.homeScore <*> gs^.awayScore of
-  Just (home, away) -> home == away
-  Nothing           -> False
+-- | Checks if the game has tied
+gameTied :: GameState -> Maybe Bool
+gameTied gs = (==) <$> gs^.homeScore <*> gs^.awayScore
 
 -- | Calculates a player's points
 pPoints :: PlayerStats -> Int

test/TypesSpec.hs

@@ -259,20 +259,21 @@ gameWonSpec = describe "gameWon" $ mapM_
       it ("should be " ++ show expected) $
         gameWon gs `shouldBe` expected)
   --  gameType,      homeScore, awayScore, expected
-  [ ( Just HomeGame, Just 1,    Just 1,    False    )
-  , ( Just HomeGame, Just 1,    Just 2,    False    )
-  , ( Just HomeGame, Just 2,    Just 1,    True     )
-  , ( Just AwayGame, Just 1,    Just 1,    False    )
-  , ( Just AwayGame, Just 1,    Just 2,    True     )
-  , ( Just AwayGame, Just 2,    Just 1,    False    )
-  , ( Nothing,       Just 1,    Just 2,    False    )
-  , ( Just HomeGame, Nothing,   Just 1,    False    )
-  , ( Just AwayGame, Nothing,   Just 1,    False    )
-  , ( Just HomeGame, Just 1,    Nothing,   False    )
-  , ( Just AwayGame, Just 1,    Nothing,   False    )
-  , ( Nothing,       Nothing,   Nothing,   False    )
+  [ ( Just HomeGame, Just 1,    Just 1,    Just False )
+  , ( Just HomeGame, Just 1,    Just 2,    Just False )
+  , ( Just HomeGame, Just 2,    Just 1,    Just True  )
+  , ( Just AwayGame, Just 1,    Just 1,    Just False )
+  , ( Just AwayGame, Just 1,    Just 2,    Just True  )
+  , ( Just AwayGame, Just 2,    Just 1,    Just False )
+  , ( Nothing,       Just 1,    Just 2,    Nothing    )
+  , ( Just HomeGame, Nothing,   Just 1,    Nothing    )
+  , ( Just AwayGame, Nothing,   Just 1,    Nothing    )
+  , ( Just HomeGame, Just 1,    Nothing,   Nothing    )
+  , ( Just AwayGame, Just 1,    Nothing,   Nothing    )
+  , ( Nothing,       Nothing,   Nothing,   Nothing    )
   ]
 
+gameTiedSpec :: Spec
 gameTiedSpec = describe "gameTied" $ mapM_
   (\(home, away, expected) -> let
     desc = "home score: " ++ show home ++
@@ -283,11 +284,11 @@ gameTiedSpec = describe "gameTied" $ mapM_
     in context desc $
       it ("should be " ++ show expected) $
         gameTied gs `shouldBe` expected)
-  [ ( Nothing, Nothing, False )
-  , ( Nothing, Just 1,  False )
-  , ( Just 1,  Nothing, False )
-  , ( Just 1,  Just 1,  True  )
-  , ( Just 1,  Just 2,  False )
+  [ ( Nothing, Nothing, Nothing    )
+  , ( Nothing, Just 1,  Nothing    )
+  , ( Just 1,  Nothing, Nothing    )
+  , ( Just 1,  Just 1,  Just True  )
+  , ( Just 1,  Just 2,  Just False )
   ]
 
 pPointsSpec :: Spec