def test_voter_get_requests_redirected_to_index(self):
        self.client.logout()
        self.client.login(username='user0', password='voter')

        response = self.client.get(reverse('results-export'), follow=True)
        self.assertRedirects(response, reverse('index'))
def merge(left, right):
    if left is None:
        return right
    if right is None:
        return left
    if left.prio > right.prio:
        left.right = merge(left.right, right)
        left.update()
        return left
    else:
        right.left = merge(left, right.left)
        right.update()
        return right