docstr: Tests logout calls docker command appropriately
docstr_tok: ["Tests","logout","calls","docker","command","appropriately"]
code: def test_logout(self, mock_call):
      """
      Tests logout calls docker command appropriately
      """
      logout_dockerhub()
      assert mock_call.call_args_list == [call(["docker", "logout"])]
  
file_path: mxnet/ci/test_docker_login.py
imports: import os
  import subprocess
  import unittest
  from unittest.mock import create_autospec, patch, call, MagicMock
  import boto3
  from boto3 import client
  from botocore.stub import Stubber
  from docker_login import login_dockerhub, logout_dockerhub, main, DOCKERHUB_RETRY_SECONDS, DOCKERHUB_LOGIN_NUM_RETRIES
label_desc: Use image node_id 5 for calling the TestDockerLogin obj's underlying member method code with example usage: obj.test_logout(mock_call) without return types