def METHOD_NAME(self):
    rv = self._invite_and_register("some@email.com", key_matches=False)
    users = User.objects.filter(email="some@email.com")
    self.assertTrue(users.exists())
    new_user = users[0]
    # The activation key did not match the invite key, so the user should
    # not be activated (yet)
    self.assertFalse(new_user.is_active)
    self.assertIsNone(new_user.get_instance_user(self.instance))
    success_url = rv.get_success_url(new_user)
    self.assertEqual(success_url, 'registration_complete')
    # We should get an activation email, and no others, because the emails
    # did not match
    self.assertEquals(len(mail.outbox), 1)
    msg = mail.outbox[0]
    self.assertEquals(tuple(msg.to), (new_user.email,))