public void Set_WeekGap_ReturnTrue(int gapTime, int startTime)
        {
            string result = CronExpressionHelper.SetWeekGap(gapTime, startTime);

            var instant = GetInstant;

            instant[5] = $"{startTime}/{gapTime}";

            Assert.Equal(string.Join(" ", instant), result);
        }
        public void Set_WrongWeekGap_ReturnFalse(int gapTime, int startTime)
        {
            Action action = () => CronExpressionHelper.SetWeekGap(gapTime, startTime);

            Assert.Throws <Exception>(action);
        }