docstr: Get Config Value from a Secret Backend
docstr_tok: ["Get","Config","Value","from","a","Secret","Backend"]
code: def test_config_from_secret_backend(self, mock_hvac):
      """Get Config Value from a Secret Backend"""
      mock_client = mock.MagicMock()
      mock_hvac.Client.return_value = mock_client
      mock_client.secrets.kv.v2.read_secret_version.return_value = {
          "request_id": "2d48a2ad-6bcb-e5b6-429d-da35fdf31f56",
          "lease_id": "",
          "renewable": False,
          "lease_duration": 0,
          "data": {
              "data": {
                  "value": "sqlite:////Users/airflow/airflow/airflow.db"
              },
              "metadata": {
                  "created_time": "2020-03-28T02:10:54.301784Z",
                  "deletion_time": "",
                  "destroyed": False,
                  "version": 1,
              },
          },
          "wrap_info": None,
          "warnings": None,
          "auth": None,
      }
  
      test_config = """[test]
      sql_alchemy_conn_secret = sql_alchemy_conn
      """
      test_config_default = """[test]
      sql_alchemy_conn = airflow
      """
  
      test_conf = AirflowConfigParser(
          default_config=test_config_default
      )
      test_conf.read_string(test_config)
      test_conf.sensitive_config_values = (
          test_conf.sensitive_config_values
          | {
              ("test", "sql_alchemy_conn"),
          }
      )
  
      assert (
          "sqlite:////Users/airflow/airflow/airflow.db"
          == test_conf.get("test", "sql_alchemy_conn")
      )
  
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 1 for calling the TestConfigurationFromSecrets obj's underlying member method code with example usage: obj.test_config_from_secret_backend(mock_hvac) without return types