code: def test_string_service(self):
      service = WebFeatureService(self.URI)
      source = ogc.WFSGeometrySource(self.URI, self.typename)
      assert isinstance(source.service, type(service))
      assert source.features == [self.typename]
  
imports: from unittest import mock
  from xml.etree.ElementTree import ParseError
  import numpy
  import pytest
  import cartopy.crs
  from cartopy.tests.conftest import _HAS_PYKDTREE_OR_SCIPY
  import cartopy.io.ogc_clients
  from cartopy.io.ogc_clients import _OWSLIB_AVAILABLE
label_desc: Use image node_id 1 for calling the TestWFSGeometrySource obj's underlying member method code with example usage: obj.test_string_service() without return types