{-

hamming
Copyright (C) Jonathan Lamothe <jonathan@jlamothe.net>

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as
published by the Free Software Foundation, either version 3 of the
License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
Affero General Public License for more details.

You should have received a copy of the GNU Affero General Public
License along with this program.  If not, see
<https://www.gnu.org/licenses/>.

-}

module Hamming.App.Widgets.InternalSpec (spec) where

import Lens.Micro ((&), (.~))

import Test.Hspec (Spec, context, describe, it, shouldBe)

import Hamming.App
import Hamming.App.Types
import Hamming.App.Widgets.Internal

spec :: Spec
spec = describe "Internal"
  hammingW'Spec

hammingW'Spec :: Spec
hammingW'Spec = describe "hammingW'" $ mapM_
  ( \(desc, state, expRes) -> context desc $ do
    let actRes = hammingW' state
    context "number of rows" $
      it "should be 4" $
        length actRes `shouldBe` 4
    mapM_
      ( \(rowNum, actRow, expRow) ->
        context ("row " ++ show rowNum) $ do
          context "number of columns" $
            it "should be 4" $
              length actRow `shouldBe` 4
          mapM_
            ( \(colNum, actBit, expBit) ->
              context ("column " ++ show colNum) $
                it ("should be " ++ show expBit) $
                  actBit `shouldBe` expBit
            ) $ zip3 [(0 :: Int)..] actRow expRow
      ) $ zip3 [(0 :: Int)..] actRes expRes
  )
  [ ( "all zero",  mkState 0,      allZero   )
  , ( "all one",   mkState 0xffff, allOne    )
  , ( "arbitrary", mkState 0x3c5a, arbitrary )
  ] where
  mkState c = initialState & hammingCode .~ c
  allZero =
    [ [ ( ["zero", "check"]
        , '0'
        )
      , ( ["check"]
        , '0'
        )
      , ( ["check"]
        , '0'
        )
      , ( []
        , '0'
        )
      ]
    , [ ( ["check"]
        , '0'
        )
      , ( []
        , '0'
        )
      , ( []
        , '0'
        )
      , ( []
        , '0'
        )
      ]
    , [ ( ["check"]
        , '0'
        )
      , ( []
        , '0'
        )
      , ( []
        , '0'
        )
      , ( []
        , '0'
        )
      ]
    , [ ( []
        , '0'
        )
      , ( []
        , '0'
        )
      , ( []
        , '0'
        )
      , ( []
        , '0'
        )
      ]
    ]
  allOne =
    [ [ ( ["zero", "check"]
        , '1'
        )
      , ( ["check"]
        , '1'
        )
      , ( ["check"]
        , '1'
        )
      , ( []
        , '1'
        )
      ]
    , [ ( ["check"]
        , '1'
        )
      , ( []
        , '1'
        )
      , ( []
        , '1'
        )
      , ( []
        , '1'
        )
      ]
    , [ ( ["check"]
        , '1'
        )
      , ( []
        , '1'
        )
      , ( []
        , '1'
        )
      , ( []
        , '1'
        )
      ]
    , [ ( []
        , '1'
        )
      , ( []
        , '1'
        )
      , ( []
        , '1'
        )
      , ( []
        , '1'
        )
      ]
    ]
  arbitrary =
    [ [ ( ["zero", "check"]
        , '0'
        )
      , ( ["check"]
        , '1'
        )
      , ( ["check"]
        , '0'
        )
      , ( []
        , '1'
        )
      ]
    , [ ( ["check"]
        , '1'
        )
      , ( []
        , '0'
        )
      , ( []
        , '1'
        )
      , ( []
        , '0'
        )
      ]
    , [ ( ["check"]
        , '0'
        )
      , ( []
        , '0'
        )
      , ( []
        , '1'
        )
      , ( []
        , '1'
        )
      ]
    , [ ( []
        , '1'
        )
      , ( []
        , '1'
        )
      , ( []
        , '0'
        )
      , ( []
        , '0'
        )
      ]
    ]

--jl