{-# OPTIONS_GHC -fno-warn-incomplete-patterns #-}

module HaskellWorks.Data.RankSelect.CsPoppy.InternalSpec (spec) where

import HaskellWorks.Data.Bits.BitWise
import HaskellWorks.Data.RankSelect.CsPoppy.Internal
import HaskellWorks.Hspec.Hedgehog
import Hedgehog
import Prelude                                        hiding (length)
import Test.Hspec

import qualified Hedgehog.Gen              as G
import qualified Hedgehog.Range            as R

{-# ANN module ("HLint: ignore Redundant do" :: String) #-}
{-# ANN module ("HLint: ignore Reduce duplication"  :: String) #-}

spec :: Spec
spec = describe "HaskellWorks.Data.RankSelect.CsInterleavedSpec" $ do
  describe "Interleaved Level 1 & 2" $ do
    it "have all its fields isolated" $ require $ property $ do
      vx <- forAll $ G.word64 R.constantBounded
      va <- forAll $ G.word64 R.constantBounded
      vb <- forAll $ G.word64 R.constantBounded
      vc <- forAll $ G.word64 R.constantBounded
      let actual =  putCsiX vx .
                    putCsiA va .
                    putCsiB vb .
                    putCsiC vc $ CsInterleaved 0
      getCsiX (putCsiX vx actual) === (vx .&. 0xffffffff)
      getCsiA (putCsiA va actual) === (va .&. 0x3ff)
      getCsiB (putCsiB vb actual) === (vb .&. 0x3ff)
      getCsiC (putCsiC vc actual) === (vc .&. 0x3ff)
    it "have all its fields isolated" $ require $ property $ do
      vx <- forAll $ G.word64 R.constantBounded
      va <- forAll $ G.word64 R.constantBounded
      vb <- forAll $ G.word64 R.constantBounded
      vc <- forAll $ G.word64 R.constantBounded
      getCsiX (putCsiX vx (CsInterleaved 0)) === (vx .&. 0xffffffff)
      getCsiA (putCsiA va (CsInterleaved 0)) === (va .&. 0x3ff)
      getCsiB (putCsiB vb (CsInterleaved 0)) === (vb .&. 0x3ff)
      getCsiC (putCsiC vc (CsInterleaved 0)) === (vc .&. 0x3ff)