def test_king_valid_start_moves():
board = Board()
king = King(4, 4, 'w')
king.valid_moves(board)
actual = king.move_list
expected = [[3, 4], [5, 4], [4, 3], [4, 5], [5, 3], [5, 5], [3, 3], [3, 5]]
assert actual == expected
def test_king_attack():
board = Board()
king = King(4, 4, 'w')
board.board[4][4] = king
board.board[3][4] = Pawn(3, 4, 'b')
king.valid_moves(board)
actual = king.attack_list
expected = [[3, 4]]
assert actual == expected
def test_white_king_castling():
board = Board()
king = King(7, 4, 'b')
board.board[7][4] = king
board.board[7][7] = Rook(7, 7, 'w')
board.board[7][0] = Rook(7, 0, 'w')
king.valid_moves(board)
actual = king.move_list
expected = [[6, 4], [7, 3], [7, 5], [6, 3], [6, 5], [7, 6], [7, 2]]
assert actual == expected
def test_black_king_castling():
board = Board()
king = King(0, 4, 'b')
board.board[0][4] = king
board.board[0][7] = Rook(0, 7, 'b')
board.board[0][0] = Rook(0, 0, 'b')
king.valid_moves(board)
actual = king.move_list
expected = [[1, 4], [0, 3], [0, 5], [1, 3], [1, 5], [0, 6], [0, 2]]
assert actual == expected
def test_checkmate_false():
board = Board()
king = King(7, 0, 'w')
board.board[7][0] = king
print(board.board[7][0])
rook = Rook(5, 0, 'b')
board.board[5][0] = rook
king.valid_moves(board)
actual = board.checkmate_status()
expected = False
assert actual == expected
def test_white_king_cannot_castling():
board = Board()
king = King(7, 4, 'w')
board.board[7][4] = king
board.board[7][7] = Rook(7, 7, 'w')
board.board[7][6] = Knight(7, 6, 'w')
board.board[7][3] = Bishop(7, 3, 'w')
board.board[7][0] = Rook(7, 0, 'w')
king.valid_moves(board)
actual = king.move_list
expected = [[6, 4], [7, 5], [6, 3], [6, 5]]
assert actual == expected
def test_psuedo_move():
board = Board()
king = King(7, 0, 'w')
board.board[7][0] = king
queen = Queen(6, 0, 'b')
board.board[6][0] = queen
rook = Rook(5, 0, 'b')
board.board[5][0] = rook
queen.valid_moves(board)
rook.valid_moves(board)
king.valid_moves(board)
actual = king.psuedo_move([6, 0], board)
print('rook attacks', rook.attack_list)
expected = False
assert actual == expected
def test_checkmate_true():
board = Board()
king = King(7, 0, 'w')
board.board[7][0] = king
queen = Queen(6, 0, 'b')
board.board[6][0] = queen
rook = Rook(5, 0, 'b')
board.board[5][0] = rook
queen.valid_moves(board)
rook.valid_moves(board)
print('king position', queen.attack_list)
king.valid_moves(board)
actual = board.checkmate_status()
print('king attacks', king.attack_list)
print('rook attacks', rook.attack_list)
expected = True
assert actual == expected
def is_controlled_sq(self, req_pos, turn):
'''
Checks whether a square is controlled by a piece.
'turn' means controlled by piece of which colour/turn
'''
# Along knight routes (L)
knight = Knight(0)
knight.set_pos(req_pos)
# print(self.get_sq_notation(req_pos))
# print()
for move in knight.valid_moves():
# print(self.get_sq_notation(move), end=': ')
piece = self.fetch_piece(move)
# print(piece)
if piece and type(piece).__name__ == 'Knight' and piece.colour == turn:
# self.pos_of_piece_causing_check = move
# print('yeah')
del knight
return True
# Along diagonals
bishop = Bishop(0)
bishop.set_pos(req_pos)
for move in bishop.valid_moves():
piece = self.fetch_piece(move)
if piece and \
(type(piece).__name__ == 'Bishop' or
type(piece).__name__ == 'Queen') and \
piece.colour == turn and \
not piece.is_path_obstructed(self, req_pos, move):
# print('yes')
# self.pos_of_piece_causing_check = move
del bishop
# print('Obstruct')
return True
# Along ranks and files
rook = Rook(0)
rook.set_pos(req_pos)
for move in rook.valid_moves():
# print(self.get_sq_notation(move), end=": ")
piece = self.fetch_piece(move)
# print(piece)
if piece and (type(piece).__name__ == 'Rook' or
type(piece).__name__ == 'Queen') and \
piece.colour == turn and \
not piece.is_path_obstructed(self, req_pos, move):
# self.pos_of_piece_causing_check = move
# print('here')
del rook
return True
# King opposition
king = King()
king.set_pos(req_pos)
for move in king.valid_moves():
piece = self.fetch_piece(move)
if piece and type(piece).__name__ == 'King' and piece.colour == turn:
if not self.is_controlled_sq(move, self.turn):
# print('here')
# self.pos_of_piece_causing_check = move
del king
return True
# Pawns
if turn == 'White':
pawn = Pawn(colour='Black')
else:
pawn = Pawn()
pawn.set_pos(req_pos)
for move in pawn.valid_moves(self.is_flipped):
# If directly in front/back
if move[0] - req_pos[0] == 0:
continue
piece = self.fetch_piece(move)
if piece and type(piece).__name__ == 'Pawn' and piece.colour == turn:
# self.pos_of_piece_causing_check = move
del pawn
return True
del knight, bishop, rook, king, pawn
# print('Nope')
return False
