code: def mock_config():
      return MockConfig("localhost", 5432, "test_db", "test_table")
  
imports: import pytest
  from pandasai.connectors import BaseConnector
  from pandasai.connectors.base import BaseConnectorConfig
  from pandasai.helpers import Logger
label_desc: Use image node_id 1 for calling a global function with example usage: mock_config() and returns: MockConfig