public void TestSpecificYear()
        {
            CronExpressionBuilder bldr = new CronExpressionBuilder();

            bldr.Year(2015);

            Assert.AreEqual("* * * ? * * 2015", bldr.CronExpression);
        }
        public void TestMultipleYearEmptyList()
        {
            CronExpressionBuilder bldr = new CronExpressionBuilder();

            List<int> desiredYears = new List<int>();

            bldr.Year(desiredYears);
        }
        public void TestMultipleYearsWithOneInvalid()
        {
            CronExpressionBuilder bldr = new CronExpressionBuilder();

            List<int> desiredYears = new List<int>();
            desiredYears.Add(101);
            desiredYears.Add(1981);

            bldr.Year(desiredYears);
        }
        public void TestMultipleYears()
        {
            CronExpressionBuilder bldr = new CronExpressionBuilder();

            List<int> desiredYears = new List<int>();
            desiredYears.Add(2015);
            desiredYears.Add(2016);

            bldr.Year(desiredYears);

            Assert.AreEqual("* * * ? * * 2015,2016", bldr.CronExpression);
        }