code: def test_srv(self):
      hook = MongoHook(conn_id="mongo_default_with_srv")
      assert hook.uri.startswith("mongodb+srv://")
  
imports: from __future__ import annotations
  import importlib
  from typing import TYPE_CHECKING
  import pymongo
  import pytest
  from airflow.models import Connection
  from airflow.providers.mongo.hooks.mongo import MongoHook
  from airflow.utils import db
label_desc: Use image node_id 3 for calling the TestMongoHook obj's underlying member method code with example usage: obj.test_srv() without return types