def test_verify_challenge_tx_donot_contain_managedata_operation(self): server_kp = Keypair.random() client_kp = Keypair.random() timeout = 600 network = 'TESTNET' challenge = Builder(server_kp.seed().decode(), network=network, sequence=-1, fee=100) now = int(time.time()) challenge.add_time_bounds({'minTime': now, 'maxTime': now + timeout}) challenge.append_bump_sequence_op(12, source=client_kp.address().decode()) challenge.sign() challenge_tx_server_signed = challenge.gen_xdr() transaction = Builder(client_kp.seed().decode(), network='TESTNET', sequence=0, fee=100) transaction.import_from_xdr(challenge_tx_server_signed) transaction.sign() challenge_tx = transaction.gen_xdr() with pytest.raises(InvalidSep10ChallengeError, match="Operation type should be ManageData."): Builder.verify_challenge_tx(challenge_tx, server_kp.address().decode(), 'TESTNET')