code: def test_create_single_connection_client_from_url():
      client = redis.Redis.from_url(
          "redis://localhost:6379/0?", single_connection_client=True
      )
      assert client.connection is not None
  
imports: import socket
  import types
  from unittest import mock
  from unittest.mock import patch
  import pytest
  import redis
  from redis import ConnectionPool, Redis
  from redis._parsers import _HiredisParser, _RESP2Parser, _RESP3Parser
  from redis.backoff import NoBackoff
  from redis.connection import Connection, SSLConnection, UnixDomainSocketConnection, parse_url
  from redis.exceptions import ConnectionError, InvalidResponse, TimeoutError
  from redis.retry import Retry
  from redis.utils import HIREDIS_AVAILABLE
  from .conftest import skip_if_server_version_lt
  from .mocks import MockSocket
label_desc: Use image node_id 5 for calling a global function with example usage: test_create_single_connection_client_from_url() without return types