def _rook_moves(self, square: Square) -> List[List[Square]]:
moves = []
original = self.get_square(square=square)
color = original.piece.color
for func in (Square.up, Square.down, Square.left, Square.right):
line = []
square = original
while True:
square = self.get_square(square=func(square))
if square == Square('00'):
break
if not square.piece and square != Square('00'):
line.append(square)
elif square.piece.color is not color:
line.append(square)
break
else:
break
if len(line) >= 1:
moves.append(line.copy())
return moves
def _bishop_moves(self, square: Square) -> List[List[Square]]:
moves = []
original = self.get_square(square=square)
color = original.piece.color
for func1 in (Square.up, Square.down):
for func2 in (Square.left, Square.right):
diagonal = []
square = original
while True:
square = self.get_square(square=func2(func1(square)))
if square == Square('00'):
break
if not square.piece and square != Square('00'):
diagonal.append(square)
elif square.piece.color is not color:
diagonal.append(square)
break
else:
break
if len(diagonal) >= 1:
moves.append(diagonal.copy())
return moves
def test_king_moves(self):
self.set_test_position_1()
# white king
self.assertEqual(self.board._king_moves(Square('g1')),
[[Square('g2')], [Square('h1')], [Square('f1')]])
# black king
self.assertEqual(self.board._king_moves(Square('g8')),
[[Square('h8')]])
def test_not_in_check(self):
self.board.set_board_state([
'........', '.....B..', '.K.k....', 'r.......', '........',
'........', '........', '........'
])
self.assertRaises(
InvalidNotationError,
lambda: Move(self.board, Color.BLACK, Square('b6'), Square('c6')))
self.assertRaises(
InvalidNotationError,
lambda: Move(self.board, Color.WHITE, Square('d6'), Square('c6')))
self.assertRaises(
InvalidNotationError,
lambda: Move(self.board, Color.WHITE, Square('d6'), Square('e6')))
self.assertRaises(
InvalidNotationError,
lambda: Move(self.board, Color.BLACK, Square('b6'), Square('b5')))
def _king_moves(self, square: Square) -> List[List[Square]]:
original = self.get_square(square=square)
color = original.piece.color
moves = [
self.get_square(square=original.up().left()),
self.get_square(square=original.up()),
self.get_square(square=original.up().right()),
self.get_square(square=original.right()),
self.get_square(square=original.right().down()),
self.get_square(square=original.down()),
self.get_square(square=original.down().left()),
self.get_square(square=original.left())
]
possible_moves = []
for move in moves:
if move != Square('00') and (not move.piece or move.piece.color is not color):
possible_moves.append([move])
return possible_moves
def test_en_passant(self):
self.board.set_board_state([
'........', '........', '........', '..Pp....', '.....PpP',
'........', '........', '........'
])
m1 = Move(self.board,
Color.WHITE,
Square('d5'),
Square('c6'),
en_passant=True)
m2 = Move(self.board,
Color.BLACK,
Square('f4'),
Square('g3'),
en_passant=True)
m3 = Move(self.board,
Color.BLACK,
Square('h4'),
Square('g3'),
en_passant=True)
self.assertEqual(m1.piece_captured, Piece(PieceType.PAWN, Color.BLACK))
self.assertEqual(m2.piece_captured, Piece(PieceType.PAWN, Color.WHITE))
self.assertEqual(m3.piece_captured, Piece(PieceType.PAWN, Color.WHITE))
def setUp(self):
self.square = Square('a1')
def test_rook_moves(self):
self.set_test_position_1()
# white rooks
self.assertEqual(self.board._rook_moves(Square('b1')),
[[Square('a1')], [Square('c1')]])
self.assertEqual(self.board._rook_moves(Square('e1')),
[[Square('e2'), Square('e3')], [Square('f1')]])
# black rooks
self.assertEqual(self.board._rook_moves(Square('a8')),
[[Square('b8'), Square('c8')]])
self.assertEqual(self.board._rook_moves(Square('f8')),
[[Square('e8')]])
def test_right(self):
self.assertEqual(self.square.right(), Square('b1'))
self.assertEqual(Square('b1').right(), Square('c1'))
self.assertEqual(Square('c1').right(), Square('d1'))
self.assertEqual(Square('d1').right(), Square('e1'))
self.assertEqual(Square('e1').right(), Square('f1'))
self.assertEqual(Square('f1').right(), Square('g1'))
self.assertEqual(Square('g1').right(), Square('h1'))
self.assertEqual(Square('h1').right(), Square('00'))
def test_down(self):
self.assertEqual(Square('a8').down(), Square('a7'))
self.assertEqual(Square('a7').down(), Square('a6'))
self.assertEqual(Square('a6').down(), Square('a5'))
self.assertEqual(Square('a5').down(), Square('a4'))
self.assertEqual(Square('a4').down(), Square('a3'))
self.assertEqual(Square('a3').down(), Square('a2'))
self.assertEqual(Square('a2').down(), Square('a1'))
self.assertEqual(self.square.down(), Square('00'))
def test_up(self):
self.assertEqual(self.square.up(), Square('a2'))
self.assertEqual(Square('a2').up(), Square('a3'))
self.assertEqual(Square('a3').up(), Square('a4'))
self.assertEqual(Square('a4').up(), Square('a5'))
self.assertEqual(Square('a5').up(), Square('a6'))
self.assertEqual(Square('a6').up(), Square('a7'))
self.assertEqual(Square('a7').up(), Square('a8'))
self.assertEqual(Square('a8').up(), Square('00'))
def test_pawn_moves(self):
# TODO: en passant
self.set_test_position_1()
# white pawns
self.assertEqual(self.board._pawn_moves(Square('a2')),
[[Square('a3'), Square('a4')]])
self.assertEqual(self.board._pawn_moves(Square('b2')),
[[Square('b3'), Square('b4')]])
self.assertEqual(self.board._pawn_moves(Square('c3')),
[[Square('c4')], [Square('d4')]])
self.assertEqual(self.board._pawn_moves(Square('d3')), [])
self.assertEqual(self.board._pawn_moves(Square('e4')),
[[Square('e5')]])
self.assertEqual(self.board._pawn_moves(Square('f5')),
[[Square('f6')], [Square('e6')]])
self.assertEqual(self.board._pawn_moves(Square('g5')), [])
self.assertEqual(self.board._pawn_moves(Square('h2')),
[[Square('h3'), Square('h4')]])
self.assertEqual(self.board._pawn_moves(Square('c5')), [])
# black pawns
self.assertEqual(self.board._pawn_moves(Square('a7')), [])
self.assertEqual(self.board._pawn_moves(Square('b7')),
[[Square('b6')], [Square('a6')]])
self.assertEqual(self.board._pawn_moves(Square('c6')),
[[Square('b5')]])
self.assertEqual(self.board._pawn_moves(Square('d7')),
[[Square('d6'), Square('d5')]])
self.assertEqual(self.board._pawn_moves(Square('f7')),
[[Square('f6')], [Square('g6')]])
self.assertEqual(self.board._pawn_moves(Square('g7')), [])
self.assertEqual(self.board._pawn_moves(Square('h7')),
[[Square('h6'), Square('h5')], [Square('g6')]])
def test_board_construction(self):
self.assertEqual(len(self.board.squares), 8)
self.assertEqual(len(self.board.squares[0]), 8)
self.assertEqual(self.board.squares[0][0], Square('a1'))
self.assertEqual(self.board.squares[7][7], Square('h8'))
def test_queen_moves(self):
self.set_test_position_1()
# white queen
self.assertEqual(
self.board._queen_moves(Square('d1')),
[[Square('d2')], [Square('c1')],
[Square('c2'), Square('b3'),
Square('a4')],
[Square('e2'),
Square('f3'),
Square('g4'),
Square('h5')]])
# black queen
self.assertEqual(
self.board._queen_moves(Square('e6')),
[[Square('e7'), Square('e8')], [Square('e5'),
Square('e4')], [Square('d6')],
[Square('f6'), Square('g6')],
[Square('d5'),
Square('c4'),
Square('b3'),
Square('a2')], [Square('f5')]])
def clear(self):
""" This method will only be used for debugging purposes
"""
self.squares = [[Square(file + rank) for file in Square.files] for rank in Square.ranks]
def test_left(self):
self.assertEqual(Square('h8').left(), Square('g8'))
self.assertEqual(Square('g8').left(), Square('f8'))
self.assertEqual(Square('f8').left(), Square('e8'))
self.assertEqual(Square('e8').left(), Square('d8'))
self.assertEqual(Square('d8').left(), Square('c8'))
self.assertEqual(Square('c8').left(), Square('b8'))
self.assertEqual(Square('b8').left(), Square('a8'))
self.assertEqual(self.square.left(), Square('00'))
def __init__(self):
self.squares: List[List[Square]] = [[Square(file + rank) for file in Square.files] for rank in Square.ranks]
self.set_up()
def test_knight_moves(self):
self.set_test_position_1()
# white knights
self.assertEqual(self.board._knight_moves(Square('a6')),
[[Square('b8')], [Square('b4')], [Square('c7')]])
self.assertEqual(self.board._knight_moves(Square('g6')),
[[Square('f8')], [Square('h8')], [Square('f4')],
[Square('h4')], [Square('e7')], [Square('e5')]])
self.assertEqual(self.board._knight_moves(Square('f2')),
[[Square('g4')], [Square('h3')], [Square('h1')]])
# black knights
self.assertEqual(self.board._knight_moves(Square('d8')), [])
