'``POST`` to remove multiple messages'

def test_valid_message_remove_multiple(self):

    client = self.client.login(username='john', password='blowfish')
    response = self.client.post(reverse('userena_umessages_remove'), data={'message_pks': [1, 2]})
    self.assertRedirects(response, reverse('userena_umessages_list'))
    msg_list = Message.objects.filter(pk__in=['1', '2'], sender_deleted_at__isnull=False)
    self.assertEqual(msg_list.count(), 2)
