public void OneByteTest()
        {
            var challenge = new Challenge1();

            var hexText            = "49";
            var bytes              = Util.HexToBytes(hexText);
            var base64Text         = challenge.BytesToBase64(bytes);
            var expectedBase64Text = "SQ==";

            base64Text.ShouldBe(expectedBase64Text);
        }
        public void WebsiteTest()
        {
            var challenge = new Challenge1();

            var hexText = "49276d206b696c6c696e6720796f757220627261696e206c696b65206120706f69736f6e6f7573206d757368726f6f6d";

            var bytes              = Util.HexToBytes(hexText);
            var base64Text         = challenge.BytesToBase64(bytes);
            var expectedBase64Text = "SSdtIGtpbGxpbmcgeW91ciBicmFpbiBsaWtlIGEgcG9pc29ub3VzIG11c2hyb29t";

            expectedBase64Text.ShouldBe(base64Text);
        }