Certo, primeiramente vc precisa "logar" um usuário antes nesse "self.client" que vc está usando.
from django.contrib.auth.models import User
from django.core.urlresolvers import reverse
from django.test.client import Client
import unittest
class LoginTestCase(unittest.TestCase):
def setUp(self):
self.client = Client()
self.user = User.objects.create_user('john', '
len...@thebeatles.com', 'johnpassword')
def testLogin(self):
self.client.login(username='john', password='johnpassword')
response = self.client.get(reverse('testlogin-view'))
self.assertEqual(response.status_code, 200)