anchor.diff:                                 fun get_oracle_register/1,
                                  fun aeo_register_tx:new/1, MinerPubkey),
   
  -    % in order to test a positive case for oracle_query_tx we first need an
  -    % actual Oracle on the chain
  +    % in order to test a positive case for oracle_extend_tx and
  +    % oracle_query_tx we first need an actual Oracle on the chain
   
       {ok, 200, #{<<"tx">> := RegisterTx}} = get_oracle_register(RegEncoded),
       sign_and_post_tx(RegisterTx),
  
positive.code:     aecore_suite_utils:mine_blocks(aecore_suite_utils:node_name(?NODE), 5),
      ct:log("Oracle registered nonce is ~p", [rpc(aec_next_nonce, pick_for_account, [MinerPubkey])]),
      {ok, []} = rpc(aec_tx_pool, peek, [infinity]), % empty
  
      % oracle_query_tx positive test
      QueryEncoded = #{sender => MinerAddress,
  
negative.code:     {ok, 200, #{<<"pub_key">> := MinerAddress}} = get_miner_pub_key(),
      {ok, MinerPubkey} = aec_base58c:safe_decode(account_pubkey, MinerAddress),
  
      % oracle_register_tx positive test
      RegEncoded = #{account => MinerAddress,
                     query_format => <<"something">>,
                     response_format => <<"something else">>,
  