{-
	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@]	Static tests.
-}

module BishBosh.Test.HUnit.Component.Move(
-- * Types
-- ** Type-synonyms
	Move,
-- * Constants
	testCases
) where

import qualified	BishBosh.Attribute.Direction		as Attribute.Direction
import qualified	BishBosh.Cartesian.Coordinates		as Cartesian.Coordinates
import qualified	BishBosh.Component.Move			as Component.Move
import qualified	BishBosh.Component.QualifiedMove	as Component.QualifiedMove
import qualified	BishBosh.Notation.Smith			as Notation.Smith
import qualified	BishBosh.Types				as T
import qualified	Test.HUnit
import			Test.HUnit((~?))

-- | Defines a concrete type for testing.
type Move	= Component.Move.Move T.X T.Y

-- | Check the sanity of the implementation, by validating a list of static test-cases.
testCases :: Test.HUnit.Test
testCases	= Test.HUnit.test [
	all (
		\(direction, s) -> let
			move :: Move
			move	= Component.QualifiedMove.getMove . Notation.Smith.getQualifiedMove $ read s
		in Cartesian.Coordinates.extrapolate direction (Component.Move.getSource move) == Component.Move.interpolate move
	) [
		(
			Attribute.Direction.ne,	"a1h8"
		), (
			Attribute.Direction.n,	"a1a8"
		), (
			Attribute.Direction.e,	"a1h1"
		), (
			Attribute.Direction.se,	"a8h1"
		), (
			Attribute.Direction.s,	"a8a1"
		), (
			Attribute.Direction.e,	"a8h8"
		), (
			Attribute.Direction.sw,	"h8a1"
		), (
			Attribute.Direction.s,	"h8h1"
		), (
			Attribute.Direction.w,	"h8a8"
		), (
			Attribute.Direction.nw,	"h1a8"
		), (
			Attribute.Direction.n,	"h1h8"
		), (
			Attribute.Direction.w,	"h1a1"
		)
	] ~? "'BishBosh.Cartesian.Coordinates.extrapolate' is incompatible with 'BishBosh.Component.Move.interpolate'."
 ]