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67 lines
2.1 KiB
Haskell
67 lines
2.1 KiB
Haskell
-- |
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-- Module : Streamly.Test.Common
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-- Copyright : (c) 2020 Composewell Technologies
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--
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-- License : BSD-3-Clause
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-- Maintainer : streamly@composewell.com
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-- Stability : experimental
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-- Portability : GHC
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module Streamly.Test.Common
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( equals
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, listEquals
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, checkListEqual
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, chooseInt
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, chooseDouble
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) where
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import Control.Monad (when)
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import Control.Monad.IO.Class (MonadIO(..))
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import Data.List ((\\))
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import Test.QuickCheck (Property, Gen, choose, counterexample)
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import Test.QuickCheck.Monadic (PropertyM, assert, monitor, monadicIO)
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equals
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:: (Show a, Monad m)
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=> (a -> a -> Bool) -> a -> a -> PropertyM m ()
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equals eq stream list = do
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when (not $ stream `eq` list) $
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monitor
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(counterexample $
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"stream " <> show stream
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<> "\nlist " <> show list
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)
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assert (stream `eq` list)
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listEquals
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:: (Show a, Eq a, MonadIO m)
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=> ([a] -> [a] -> Bool) -> [a] -> [a] -> PropertyM m ()
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listEquals eq stream list = do
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when (not $ stream `eq` list) $ liftIO $ putStrLn $
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"stream " <> show stream
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<> "\nlist " <> show list
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<> "\nstream length " <> show (length stream)
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<> "\nlist length " <> show (length list)
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<> "\nstream \\\\ list " <> show (stream \\ list)
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<> "\nlist \\\\ stream " <> show (list \\ stream)
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when (not $ stream `eq` list) $
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monitor
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(counterexample $
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"stream " <> show stream
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<> "\nlist " <> show list
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<> "\nstream length " <> show (length stream)
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<> "\nlist length " <> show (length list)
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<> "\nstream \\\\ list " <> show (stream \\ list)
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<> "\nlist \\\\ stream " <> show (list \\ stream)
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)
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assert (stream `eq` list)
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checkListEqual :: (Show a, Eq a) => [a] -> [a] -> Property
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checkListEqual ls_1 ls_2 = monadicIO (listEquals (==) ls_1 ls_2)
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chooseInt :: (Int, Int) -> Gen Int
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chooseInt = choose
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chooseDouble :: (Double, Double) -> Gen Double
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chooseDouble = choose
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