При запуске юнит-теста выдаёт "KeyError: 'ls_groups'"

ls_groups = response.context['ls_groups']

['ls_groups']

Error: test_login <Deanery.tests.TestCaseGroup>
Traceback <most recent call last):
  File "D:\PRG\newtest\Deanery\tests.py", line 23, in test_login
    ls_groups = ls_groups = response.context['ls_groups']
  File "D:\Python27\lib\site-packages\django\template\context.py", line54, in _getitem_
    raise KeyError(key)
KeyError: 'ls_groups'

from django.utils import unittest
from Deanery.models import Students, Groups
from django.test.client import Client
 
 
class GroupTestCase(unittest.TestCase):
    def setUp(self):
        self.client = Client()
        self.name = Groups.objects.create(name='UTestGroupName',)
 
 
    def test_login(self):
        response = self.client.get('/login/')
        self.assertEqual(response.status_code, 200)
        print 'login code', response.status_code
        response = self.client.post('/login/', {'username': 'admin', 'password': '1'})
        self.assertEqual(response.status_code, 200)
 
        self.client.login(username='admin', password='1')
 
        response = self.client.post('/Deanery/group/add/', {'name': 'testGroup', })
        response = self.client.get('/Deanery/')
        ls_groups = response.context['ls_groups']