public void StringReverseTest()
        {
            string a        = "abcd";
            string expected = "dcba";

            string reversed = DoubleExtensionsClass.StringReverse(a);

            Assert.That(reversed, Is.EqualTo(expected));
        }
        public void ToBinTest(double num, string expected)
        {
            string bin = DoubleExtensionsClass.ToBin(num);

            Assert.That(bin, Is.EqualTo(expected));
        }