new_contents: from django.test import TestCase
  
  from rockit.core import holders
  from rockit.core import tasks
  
  class TaskSettingsTestCase(TestCase):
  
      def test_it_should_be_able_to_call_task(self):
          holder = holders.SettingsHolder()
          holder = tasks.settings(holder)
  
          self.assertNotEqual(0, len(holder.get_content()))
  
subject: Add unit test for task settings