code: def __init__(self, extra_dejson=None, *args, **kwargs):
      self.extra_dejson = extra_dejson
      self.get_records = MagicMock(return_value=[["test_record"]])
  
      output = kwargs.get("output", ["" for _ in range(10)])
      self.readline = MagicMock(
          side_effect=[line.encode() for line in output]
      )
  
imports: from __future__ import annotations
  from datetime import datetime
  from unittest.mock import MagicMock
  from airflow.models.dag import DAG
  from airflow.providers.apache.hive.hooks.hive import HiveCliHook, HiveMetastoreHook, HiveServer2Hook
  from airflow.providers.mysql.hooks.mysql import MySqlHook
label_desc: Use image node_id 1 to create a new MockDBConnection object  with example: obj = MockDBConnection(extra_dejson)