def METHOD_NAME(self, redirect_for_login):
    login_url = 'https://example.com/fxalogin'
    redirect_for_login.return_value = HttpResponseRedirect(login_url)
    # if django admin passes on a next param, check we use it.
    url = reverse('admin:login') + '?next=/en-US/admin/models/addon/'
    response = self.client.get(url)
    # redirect to the correct page
    self.assert3xx(response, '/en-US/admin/models/addon/')
    # Same with an "is_staff" user.
    user = user_factory(email='someone@mozilla.com')
    self.client.force_login(user)
    response = self.client.get(url)
    self.assert3xx(response, '/en-US/admin/models/addon/')