def METHOD_NAME(self, mock_create):
    url = CHINA_STORAGE_ACCOUNT + "/testcontainer/extrafolder"
    blob_service, container_name, key_prefix = \
        StorageUtilities.get_blob_client_by_uri(url, Session(cloud_endpoints=AZURE_CHINA_CLOUD))
    self.assertIsNotNone(blob_service)
    self.assertEqual(container_name, "testcontainer")
    self.assertEqual(key_prefix, "extrafolder")
    self.assertTrue(CHINA_STORAGE_ENDPOINT in blob_service.primary_endpoint)
    self.assertTrue(mock_create.called_once())