public void ValidMathFloor()
        {
            Hack hack = new Hack();
            var  mock = new Mock <Hack>();

            mock.Setup(m => m.MathFloorExample(2.7));

            Assert.That(() => hack.MathFloorExample(2.7), Is.EqualTo(2));
        }
        public void ValidMathAbs()
        {
            var hack = new Hack();

            Assert.That(() => hack.MathAbsExample(-5), Is.EqualTo(5));
        }