{-# LANGUAGE QuasiQuotes #-}

module TestUtils where



#include "prelude.inc"

import Test.Hspec

import NeatInterpolation

import Language.Haskell.Brittany

import Language.Haskell.Brittany.Config.Types

import System.Timeout ( timeout )

import Data.Coerce ( coerce )



roundTripEqual :: Text -> Expectation
roundTripEqual t = fmap (fmap PPTextWrapper) (parsePrintModule defaultTestConfig "TestFakeFileName.hs" t)
    `shouldReturn` Right (PPTextWrapper t)

roundTripEqualWithTimeout :: Int -> Text -> Expectation
roundTripEqualWithTimeout time t =
  timeout time (action >>= evaluate) >>= (`shouldSatisfy` Data.Maybe.isJust)
  where
    action = fmap (fmap PPTextWrapper)
                  (parsePrintModule defaultTestConfig "TestFakeFileName.hs" t)

newtype PPTextWrapper = PPTextWrapper Text
  deriving Eq

instance Show PPTextWrapper where
  show (PPTextWrapper t) = "\n" ++ Text.unpack t

defaultTestConfig :: Config
defaultTestConfig = Config
    { _conf_debug = _conf_debug staticDefaultConfig
    , _conf_layout = LayoutConfig
      { _lconfig_cols               = coerce (80 :: Int)
      , _lconfig_indentPolicy       = coerce IndentPolicyFree
      , _lconfig_indentAmount       = coerce (2 :: Int)
      , _lconfig_indentWhereSpecial = coerce True
      , _lconfig_indentListSpecial  = coerce True
      , _lconfig_importColumn       = coerce (60 :: Int)
      , _lconfig_altChooser         = coerce $ AltChooserBoundedSearch 3
      }
    , _conf_errorHandling = _conf_errorHandling staticDefaultConfig
    , _conf_forward = ForwardOptions
      { _options_ghc = Identity []
      }
    }