code: def test_redis_connection(self):
      db = Database(protocol=3)
      db.ping()
  
file_path: mindsdb/tests/integration_tests/flows/test_ml_task_queue.py
imports: import json
  import pytest
  from walrus import Database
  from mindsdb.api.executor.data_types.response_type import RESPONSE_TYPE
  from mindsdb.utilities.ml_task_queue.const import TASKS_STREAM_NAME
  from .http_test_helpers import HTTPHelperMixin
label_desc: Use image node_id 1 for calling the TestMLTaskQueue obj's underlying member method code with example usage: obj.test_redis_connection() without return types