public void IndexTest()
        {
            var obiekt   = new KsiazkaController();
            var resultat = obiekt.Delete(1) as ViewResult;
            var blad1    = obiekt.Delete(2) as ViewResult;

            Assert.AreNotEqual(resultat, blad1);
        }
        public void DetailsTest()
        {
            var obj    = new KsiazkaController();
            var result = obj.Details(1) as ViewResult;
            var blad   = obj.Details(2) as ViewResult;

            Assert.AreEqual(null, blad);
        }