code: def test_column_hash_property(self):
      # Test column_hash property
      mock_df = Mock()
      mock_df.columns = ["Column1", "Column2"]
      self.connector.head = Mock(return_value=mock_df)
      column_hash = self.connector.column_hash
      self.assertIsNotNone(column_hash)
      self.assertEqual(
          column_hash,
          "0d045cff164deef81e24b0ed165b7c9c2789789f013902115316cde9d214fe63",
      )
  
file_path: pandas-ai/tests/connectors/test_sqlite.py
imports: import unittest
  import pandas
  from unittest.mock import Mock, patch
  from pandasai.connectors.base import SqliteConnectorConfig
  from pandasai.connectors import SqliteConnector
label_desc: Use image node_id 7 for calling the TestSqliteConnector obj's underlying member method code with example usage: obj.test_column_hash_property() without return types