def test_black_piece_cannot_move_northwest(self):
piece = Piece("black", 10)
assert not piece.move(Direction.NW)
def test_white_piece_can_move_northwest(self):
piece = Piece("white", 10)
assert piece.move(Direction.NW)
def test_black_piece_can_move_southwest(self):
piece = Piece("black", 10)
assert piece.move(Direction.SW)
def test_white_piece_cannot_move_southwest(self):
piece = Piece("white", 10)
assert not piece.move(Direction.SW)