public void CreateSequence_View_Post()
        {
            SequenceRequest request = new SequenceRequest() { Number = 10 };
            SequenceController sut = new SequenceController();

            sut.WithCallTo(x => x.CreateSequence(request)).ShouldRedirectTo<int>(x => x.ShowResult);
        }
        public ActionResult CreateSequence(SequenceRequest model)
        {
            if (!ModelState.IsValid)
                return View(model);

            return RedirectToAction("ShowResult", new { number = model.Number });

        }