Test Login with credentials as superuser Django 1.9, Python 3.5

I've been attempting many different methods to login as superuser to test-drive admin features with Django 1.9 and Python 3.5, and all seem to have failed. I'm attempting with fixtures or with just setting is_superuser to True.

fixtures gives me this warning:

    ...C:\Users\Jordon\AppData\Local\Programs\Python\Python35-32\lib\site-packages\django\core\management\commands\loaddata.py:243: User
Warning: No fixture named 'users' found.
  warnings.warn("No fixture named '%s' found." % fixture_name)

And the line self.client.login(username='user', password='password') in the following block appears to absolutely nothing, as the next line indicates, and as a print statement verified, showing the same login page. I could perhaps try selenium on it, but I'm trying to figure out why it's not taking the login credentials.

class AdminTest(LiveServerTestCase):
    fixtures = ['users.json']

    def setUp(self):
        self.user = User(username='user', password='password')
        self.user.is_superuser = True
        self.user.is_staff = True
        self.user.save()
        self.client = Client()

    def test_login(self):

        response = self.client.get('/admin/', follow=True)
        self.assertEqual(response.status_code, 200)
        self.assertTrue('Log in' in response.content.decode('utf-8'))
        self.client.login(username='user', password='password')
        response = self.client.get('/admin/', follow=True)
        self.assertTrue('Log out' in response.content.decode('utf-8'))