code: def setUpClass(cls):
      connection_data = {
          "host": "localhost",
          "port": "9000",
          "user": "root",
          "password": "pass",
          "database": "test_data",
      }
      cls.handler = ClickHouseHandler(
          "test_clickhouse_handler", connection_data
      )
  
file_path: mindsdb/mindsdb/integrations/handlers/clickhouse_handler/tests/test_clickhouse_handler.py
imports: import unittest
  from mindsdb.integrations.handlers.clickhouse_handler.clickhouse_handler import ClickHouseHandler
  from mindsdb.api.executor.data_types.response_type import RESPONSE_TYPE
label_desc: Use image node_id 1 for calling the PostgresHandlerTest obj's underlying member method code with example usage: obj.setUpClass(cls) without return types