class_docstr: Extending hook so that a mockmongo collection object can be passed in
  to get_collection()
code: def __init__(self, conn_id="mongo_default", *args, **kwargs):
      super().__init__(conn_id=conn_id, *args, **kwargs)
  
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 1 to create a new MongoHookTest object from inherited base classes: MongoHook with example: obj = MongoHookTest(conn_id)