code: def test_yaml_file_should_load_connection(
      self, file_content, expected_attrs_dict
  ):
      with mock_local_file(file_content):
          connections_by_conn_id = (
              local_filesystem.load_connections_dict("a.yaml")
          )
          for conn_id, connection in connections_by_conn_id.items():
              expected_attrs = expected_attrs_dict[conn_id]
              actual_attrs = {
                  k: getattr(connection, k)
                  for k in expected_attrs.keys()
              }
              assert actual_attrs == expected_attrs
  
imports: from __future__ import annotations
  import json
  import os
  import re
  from contextlib import contextmanager
  from unittest import mock
  import pytest
  from airflow.configuration import ensure_secrets_loaded
  from airflow.exceptions import AirflowException, AirflowFileParseException, ConnectionNotUnique
  from airflow.models import Variable
  from airflow.secrets import local_filesystem
  from airflow.secrets.local_filesystem import LocalFilesystemBackend
  from tests.test_utils.config import conf_vars
label_desc: Use image node_id 7 for calling the TestLoadConnection obj's underlying member method code with example usage: obj.test_yaml_file_should_load_connection(file_content, expected_attrs_dict) without return types