code: def test_get_conn(self, mock_build, mock_authorize):
      conn = self.datastore_hook.get_conn()
  
      mock_build.assert_called_once_with(
          "datastore",
          "v1",
          http=mock_authorize.return_value,
          cache_discovery=False,
      )
      assert conn == mock_build.return_value
      assert conn == self.datastore_hook.connection
  
imports: from __future__ import annotations
  from unittest import mock
  from unittest.mock import call, patch
  import pytest
  from airflow.exceptions import AirflowException
  from airflow.providers.google.cloud.hooks.datastore import DatastoreHook
label_desc: Use image node_id 3 for calling the TestDatastoreHook obj's underlying member method code with example usage: obj.test_get_conn(mock_build, mock_authorize) without return types