code: def test_sqlalchemy_scheme_default(self):
      hook = self.get_hook()
      uri = hook.get_uri()
      assert urlsplit(uri).scheme == "mssql+pyodbc"
  
imports: from __future__ import annotations
  import json
  import logging
  from dataclasses import dataclass
  from unittest import mock
  from unittest.mock import patch
  from urllib.parse import quote_plus, urlsplit
  import pyodbc
  import pytest
  from airflow.models import Connection
  from airflow.providers.odbc.hooks.odbc import OdbcHook
label_desc: Use image node_id 20 for calling the TestOdbcHook obj's underlying member method code with example usage: obj.test_sqlalchemy_scheme_default() without return types