public void FindNextBiggerNumber_10_minus1return()
        {
            int         expected    = -1;
            NumberClass numberClass = new NumberClass();
            int         actual      = numberClass.FindNextBiggerNumber(10);

            Assert.AreEqual(expected, actual);
        }
        public void FindNextBiggerNumber_3456432_3462345return()
        {
            int         expected    = 3462345;
            NumberClass numberClass = new NumberClass();
            int         actual      = numberClass.FindNextBiggerNumber(3456432);

            Assert.AreEqual(expected, actual);
        }
        public void FindNextBiggerNumber_2017_2071return()
        {
            int         expected    = 2071;
            NumberClass numberClass = new NumberClass();
            int         actual      = numberClass.FindNextBiggerNumber(2017);

            Assert.AreEqual(expected, actual);
        }
        public void FindNextBiggerNumber_144_414return()
        {
            int         expected    = 414;
            NumberClass numberClass = new NumberClass();
            int         actual      = numberClass.FindNextBiggerNumber(144);

            Assert.AreEqual(expected, actual);
        }
        public void FindNextBiggerNumber_513_531return()
        {
            int         expected    = 531;
            NumberClass numberClass = new NumberClass();
            int         actual      = numberClass.FindNextBiggerNumber(513);

            Assert.AreEqual(expected, actual);
        }