def test_assign(self, position, piece, board_old, board_new):
tateti = TaTeTi(board_old)
tateti.assign(position, piece)
self.assertEqual(tateti.board, board_new)
def test_assign_invalid(self, board, position, piece):
tateti = TaTeTi(board)
with self.assertRaises(Exception):
tateti.assign(position + 1, piece)