File: Mock.hs

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module Mock where

import           Control.Applicative
import           Data.IORef

newtype Mock = Mock (IORef Int)

newMock :: IO Mock
newMock = Mock <$> newIORef 0

mockAction :: Mock -> IO ()
mockAction (Mock ref) = modifyIORef ref succ

mockCounter  :: Mock -> IO Int
mockCounter  (Mock ref) = readIORef ref