tests.py

    def test_mobile_update_customer(self):
        user = User.objects.create(username='warhead')
        from django.test import Client
        client = Client()
        client.force_login(user=user)
        mommy.make(Customer, family_name='IBM', created_user=self.soken_staff, updated_user=self.soken_staff)
        data = {
            "family_name": "C0D1UM"
        }
        customer = Customer.objects.first()
        res = client.patch(reverse('api:customer-detail', kwargs={'pk': customer.id}), data=data, content_type='application/json')
        self.assertEqual(200, res.status_code)
        customer.refresh_from_db()
        self.assertEqual('C0D1UM', customer.family_name)
        self.assertEqual('spearhead', customer.created_user.username)
        self.assertEqual('warhead', customer.updated_user.username)