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

            bldr.YearRange(2011, 2017);
            bldr.YearIncrements(2017, 3);
        }
        public void TestRangeOfYears()
        {
            CronExpressionBuilder bldr = new CronExpressionBuilder();

            bldr.YearRange(2015, 2018);

            Assert.AreEqual("* * * ? * * 2015-2018", bldr.CronExpression);
        }