{-

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.ActionsSpec (spec) where

import Lens.Micro ((&), (.~))
import Test.Hspec (Spec, context, describe, it, shouldBe)

import Hamming.App.Actions
import Hamming.App.Types

spec :: Spec
spec = describe "Actions" $ do
  moveUpSpec
  moveDownSpec
  moveLeftSpec
  moveRightSpec
  flipBitSpec

moveUpSpec :: Spec
moveUpSpec = describe "moveUp" $ mapM_
  ( \(desc, state, expected) -> context desc $ let
    actual = moveUp state
    in it ("should be " ++ show expected) $
      actual `shouldBe` expected
  )
  [ ( "at the top", atTop,     atTop   )
  , ( "elsewhere",  elsewhere, movedUp )
  ] where
  atTop     = initialEditor & colNum .~ 1
  elsewhere = atTop & rowNum .~ 2
  movedUp   = atTop & rowNum .~ 1

moveDownSpec :: Spec
moveDownSpec = describe "moveDown" $ mapM_
  ( \(desc, state, expected) -> context desc $ let
    actual = moveDown state
    in it ("should be " ++ show expected) $
      actual `shouldBe` expected
  )
  [ ( "at the bottom", atBottom,  atBottom  )
  , ( "elsewhere",     elsewhere, movedDown )
  ] where
  atBottom = initialEditor
    & colNum .~ 1
    & rowNum .~ 3
  elsewhere = initialEditor
    & colNum .~ 1
    & rowNum .~ 1
  movedDown = initialEditor
    & colNum .~ 1
    & rowNum .~ 2

moveLeftSpec :: Spec
moveLeftSpec = describe "moveLeft" $ mapM_
  ( \(desc, state, expected) -> context desc $ let
    actual = moveLeft state
    in it ("should be " ++ show expected) $
      actual `shouldBe` expected
  )
  [ ( "at left",   atLeft,    atLeft    )
  , ( "elsewhere", elsewhere, movedLeft )
  ] where
  atLeft    = initialEditor & rowNum .~ 1
  elsewhere = atLeft & colNum .~ 2
  movedLeft = atLeft & colNum .~ 1

moveRightSpec :: Spec
moveRightSpec = describe "moveRight" $ mapM_
  ( \(desc, state, expected) -> context desc $ let
    actual = moveRight state
    in it ("should be " ++ show expected) $
      actual `shouldBe` expected
  )
  [ ( "at right",  atRight,   atRight    )
  , ( "elsewhere", elsewhere, movedRight )
  ] where
  atRight = initialEditor
    & rowNum .~ 1
    & colNum .~ 3
  elsewhere = initialEditor
    & rowNum .~ 1
    & colNum .~ 1
  movedRight = initialEditor
    & rowNum .~ 1
    & colNum .~ 2

flipBitSpec :: Spec
flipBitSpec = describe "flipBit" $ mapM_
  ( \(desc, state, expected) -> context desc $ let
    actual = flipBit state
    in it ("should be " ++ show expected) $
      actual `shouldBe` expected
  )
  [ ( "turn on",       unflipped, flipped   )
  , ( "turn off",      flipped,   unflipped )
  , ( "non-edit mode", nonEdit,   nonEdit   )
  ] where
  nonEdit = initialState & hammingCode .~ 0x3c5a
  unflipped = nonEdit & appMode .~ EditMode
    ( initialEditor
    & rowNum .~ 1
    & colNum .~ 3
    )
  flipped = unflipped & hammingCode .~ 0x3cda

--jl