code: def test_protocol_via_use_tls(
      self, mock_hvac, mock_get_connection, use_tls, expected_url
  ):
      mock_client = mock.MagicMock()
      mock_hvac.Client.return_value = mock_client
      mock_connection = self.get_mock_connection(conn_type="vault")
      mock_get_connection.return_value = mock_connection
  
      connection_dict = {"use_tls": use_tls}
  
      mock_connection.extra_dejson.get.side_effect = connection_dict.get
      kwargs = {
          "vault_conn_id": "vault_conn_id",
          "auth_type": "approle",
          "kv_engine_version": 2,
          "session": None,
      }
  
      test_hook = VaultHook(**kwargs)
      mock_get_connection.assert_called_with("vault_conn_id")
      test_client = test_hook.get_conn()
      mock_hvac.Client.assert_called_with(
          url=expected_url, session=None
      )
      test_client.auth.approle.login.assert_called_with(
          role_id="user", secret_id="pass"
      )
      test_client.is_authenticated.assert_called_with()
      assert 2 == test_hook.vault_client.kv_engine_version
  
imports: from __future__ import annotations
  import re
  from unittest import mock
  from unittest.mock import PropertyMock, mock_open, patch
  import pytest
  from hvac.exceptions import VaultError
  from airflow.configuration import AirflowConfigParser
  from airflow.exceptions import AirflowConfigException
  from airflow.providers.hashicorp.hooks.vault import VaultHook
  from tests.test_utils.config import conf_vars
label_desc: Use image node_id 9 for calling the TestVaultHook obj's underlying member method code with example usage: obj.test_protocol_via_use_tls(mock_hvac, mock_get_connection, use_tls, expected_url) without return types