old_contents: from django.core.management import call_command
  from django.test import TestCase
  
  
  class ServerTest(TestCase):
      def test_update_game_info(self):
          call_command('update_game_info')
  
new_contents: from django.core.management import call_command
  from django.test import TestCase
  from game_info.models import Server
  
  
  class ServerTest(TestCase):
      def create_server(self, title="Test Server", host="example.org", port=27015):
          return Server.objects.create(title=title, host=host, port=port)
  
      def test_update_game_info(self):
          self.create_server().save()
          call_command('update_game_info')
  
subject: Fix testing on update_game_info management command