old_contents: from django.test import TestCase
  from grd.models import Event
  
  
  class EventTest(TestCase):
      fixtures = ['agents.json', 'devices.json', 'events.json', 'users.json']
      
      def test_event_representation(self):
          for event in Event.objects.all():
              self.assertIsNotNone(repr(event))
  
  
new_contents: from django.test import TestCase
  from grd.models import Event
  
  
  class EventTest(TestCase):
      fixtures = ['agents.json', 'devices.json', 'events.json', 'users.json']
      
      def test_event_representation(self):
          for event in Event.objects.all():
              self.assertIsNotNone(repr(event))
  
subject: remove final blank line.