Updated pattern for Python abstract visitor test

python/tests/operation_visitor/test_abstract_operation_visitor.py

@@ -14,16 +14,13 @@ def test_abstract_operation_visitor():
         visitor = MyOperationVisitor()
     except TypeError as ex:
         assert str(ex) == (
-            "Can't instantiate abstract class MyOperationVisitor with abstract methods "
-            "account_create, account_create_with_delegation, account_update, account_update2, "
-            "account_witness_proxy, account_witness_vote, cancel_transfer_from_savings, "
-            "change_recovery_account, claim_account, claim_reward_balance, collateralized_convert, "
-            "comment, comment_options, convert, create_claimed_account, create_proposal, custom, "
-            "custom_json, decline_voting_rights, delegate_vesting_shares, delete_comment, escrow_approve, "
-            "escrow_dispute, escrow_release, escrow_transfer, feed_publish, limit_order_cancel, "
-            "limit_order_create, limit_order_create2, pow, pow2, recover_account, recurrent_transfer, "
-            "remove_proposal, request_account_recovery, set_withdraw_vesting_route, transfer, "
-            "transfer_from_savings, transfer_to_savings, transfer_to_vesting, update_proposal, "
-            "update_proposal_votes, withdraw_vesting, witness_block_approve, witness_set_properties, "
-            "witness_update"
+          "Can't instantiate abstract class MyOperationVisitor without an implementation for abstract methods"
+          " 'account_create', 'account_create_with_delegation', 'account_update', 'account_update2', 'account_witness_proxy',"
+          " 'account_witness_vote', 'cancel_transfer_from_savings', 'change_recovery_account', 'claim_account', 'claim_reward_balance',"
+          " 'collateralized_convert', 'comment', 'comment_options', 'convert', 'create_claimed_account', 'create_proposal', 'custom',"
+          " 'custom_json', 'decline_voting_rights', 'delegate_vesting_shares', 'delete_comment', 'escrow_approve', 'escrow_dispute',"
+          " 'escrow_release', 'escrow_transfer', 'feed_publish', 'limit_order_cancel', 'limit_order_create', 'limit_order_create2',"
+          " 'pow', 'pow2', 'recover_account', 'recurrent_transfer', 'remove_proposal', 'request_account_recovery',"
+          " 'set_withdraw_vesting_route', 'transfer', 'transfer_from_savings', 'transfer_to_savings', 'transfer_to_vesting', 'update_proposal',"
+          " 'update_proposal_votes', 'withdraw_vesting', 'witness_block_approve', 'witness_set_properties', 'witness_update'"
         )