new_contents: # -*- coding: utf-8
  from __future__ import unicode_literals, absolute_import
  
  from django.contrib.auth import get_user_model
  from django.test import TestCase
  
  from social_django.models import UserSocialAuth
  
  
  class TestSocialAuthUser(TestCase):
  
      def test_user_relationship_none(self):
          """Accessing User.social_user outside of the pipeline doesn't work"""
          User = get_user_model()
          user = User.objects.create_user(username="randomtester")
          with self.assertRaises(AttributeError):
              user.social_user
  
      def test_user_existing_relationship(self):
          """Accessing User.social_user outside of the pipeline doesn't work"""
          User = get_user_model()
          user = User.objects.create_user(username="randomtester")
          UserSocialAuth.objects.create(user=user, provider='my-provider', uid='1234')
          with self.assertRaises(AttributeError):
              user.social_user
  
      def test_get_social_auth(self):
          User = get_user_model()
          user = User.objects.create_user(username="randomtester")
          user_social = UserSocialAuth.objects.create(user=user, provider='my-provider', uid='1234')
          other = UserSocialAuth.get_social_auth('my-provider', '1234')
          self.assertEqual(other, user_social)
  
      def test_get_social_auth_none(self):
          other = UserSocialAuth.get_social_auth('my-provider', '1234')
          self.assertIsNone(other)
  
subject: Write a few tests for models