System.Globalization.TaiwanCalendar.GetDayOfYear C# (CSharp) Method

        public override int GetDayOfYear(DateTime time)
        {
            return (helper.GetDayOfYear(time));
        }

        public void PosTest1()
        {
            System.Globalization.Calendar tc = new TaiwanCalendar();
            Random rand = new Random(-55);
            int year = rand.Next(tc.MinSupportedDateTime.Year, tc.MaxSupportedDateTime.Year - 1911);
            int month = rand.Next(1, 12);
            int day;
            if (tc.IsLeapYear(year))
            {
                day = rand.Next(1, _DAYS_PER_MONTHS_IN_LEAP_YEAR[month] + 1);
            }
            else
            {
                day = rand.Next(1, _DAYS_PER_MONTHS_IN_NO_LEAP_YEAR[month] + 1);
            }

            DateTime dt = new DateTime(year, month, day);
            int actualDay = getDayOfYear(dt);
            Assert.Equal(tc.GetDayOfYear(dt), actualDay);
        }