{-# OPTIONS_GHC -fno-warn-orphans #-}
{-
	Copyright (C) 2018 Dr. Alistair Ward

	This file is part of BishBosh.

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

	BishBosh 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 General Public License for more details.

	You should have received a copy of the GNU General Public License
	along with BishBosh.  If not, see <http://www.gnu.org/licenses/>.
-}
{- |
 [@AUTHOR@]	Dr. Alistair Ward

 [@DESCRIPTION@]	Implements 'Test.QuickCheck.Arbitrary' & defines /QuickCheck/-properties.
-}

module BishBosh.Test.QuickCheck.ContextualNotation.QualifiedMoveForest(
-- * Types
-- ** Type-synonyms
	QualifiedMoveForest,
-- * Constants
	results
) where

import			BishBosh.Test.QuickCheck.ContextualNotation.PGN()
import			Control.Arrow((&&&))
import qualified	BishBosh.ContextualNotation.QualifiedMoveForest	as ContextualNotation.QualifiedMoveForest
import qualified	BishBosh.Model.Game				as Model.Game
import qualified	BishBosh.Model.GameTree				as Model.GameTree
import qualified	BishBosh.Property.Null				as Property.Null
import qualified	BishBosh.State.Board				as State.Board
import qualified	BishBosh.Type.Length				as Type.Length
import qualified	Data.Foldable
import qualified	Data.Tree
import qualified	Test.QuickCheck
import			Test.QuickCheck((==>))

instance (
	Enum	x,
	Enum	y,
	Ord	x,
	Ord	y,
	Show	x,
	Show	y
 ) => Test.QuickCheck.Arbitrary (ContextualNotation.QualifiedMoveForest.QualifiedMoveForest x y) where
	{-# SPECIALISE instance Test.QuickCheck.Arbitrary QualifiedMoveForest #-}
	arbitrary	= fmap ContextualNotation.QualifiedMoveForest.fromPGNDatabase Test.QuickCheck.arbitrary

-- | Defines a concrete type for testing.
type QualifiedMoveForest	= ContextualNotation.QualifiedMoveForest.QualifiedMoveForest Type.Length.X Type.Length.Y

-- | The constant test-results for this data-type.
results :: IO [Test.QuickCheck.Result]
results	= sequence [
	let
		f :: QualifiedMoveForest -> Test.QuickCheck.Property
		f = Test.QuickCheck.label "QualifiedMoveForest.prop_findMinimumPieces" . uncurry (==) . (
			ContextualNotation.QualifiedMoveForest.findMinimumPieces &&& Data.Foldable.minimum . fmap (
				State.Board.getNPieces . Model.Game.getBoard
			) . Model.GameTree.deconstruct . ContextualNotation.QualifiedMoveForest.toGameTree
		 )
	in Test.QuickCheck.quickCheckWithResult Test.QuickCheck.stdArgs { Test.QuickCheck.maxSuccess = 256 } f,
	let
		f :: QualifiedMoveForest -> Test.QuickCheck.Property
		f qualifiedMoveForest	= not (Property.Null.isNull qualifiedMoveForest) ==> Test.QuickCheck.label "QualifiedMoveForest.prop_count" . uncurry (==) $ (
			snd {-nPositions-} . ContextualNotation.QualifiedMoveForest.count &&& fromIntegral . length . tail {-remove the apex-} . Data.Tree.flatten . Model.GameTree.deconstruct . ContextualNotation.QualifiedMoveForest.toGameTree
		 ) qualifiedMoveForest
	in Test.QuickCheck.quickCheckWithResult Test.QuickCheck.stdArgs { Test.QuickCheck.maxSuccess = 256 } f
 ]