public void NumberToCodeTest()
        {
            var promoGen = new PromoCardGeneratorMock (testKey1, 6);

            string codeGenerated = promoGen.GenerateCode (number);

            Assert.AreEqual (code, codeGenerated);
        }
        public void CodeToNumberTest()
        {
            var promoGen = new PromoCardGeneratorMock (testKey1, 6);

            int numberFromCode = promoGen.ExtractNumber (code);

            Assert.AreEqual (number, numberFromCode);
        }
 public void UniqueCharactersError()
 {
     var promoGen = new PromoCardGeneratorMock ("ABCDEFGHIJKLMNOA", 6);
 }
 public void MinimunCharactersError()
 {
     var promoGen = new PromoCardGeneratorMock ("A", 6);
 }