code: def test_auth_failure_raises_error(self, mock_hvac):
      mock_client = mock.MagicMock()
      mock_hvac.Client.return_value = mock_client
      mock_client.is_authenticated.return_value = False
  
      kwargs = {
          "connections_path": "connections",
          "mount_point": "airflow",
          "auth_type": "token",
          "url": "http://127.0.0.1:8200",
          "token": "test_wrong_token",
      }
  
      with pytest.raises(
          VaultError, match="Vault Authentication Error!"
      ):
          VaultBackend(**kwargs).get_connection(conn_id="test")
  
imports: from __future__ import annotations
  from unittest import mock
  import pytest
  from hvac.exceptions import InvalidPath, VaultError
  from airflow.providers.hashicorp.secrets.vault import VaultBackend
label_desc: Use image node_id 12 for calling the TestVaultSecrets obj's underlying member method code with example usage: obj.test_auth_failure_raises_error(mock_hvac) without return types