code: def test_base_connector_columns_count_property(mock_connector):
      assert mock_connector.columns_count == 5
  
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 7 for calling a global function with example usage: test_base_connector_columns_count_property(mock_connector) without return types