System.Globalization.KoreanCalendar.IsLeapDay C# (CSharp) Method

        public override bool IsLeapDay(int year, int month, int day, int era)
        {
            return (helper.IsLeapDay(year, month, day, era));
        }

 public void PosTest4()
 {
     System.Globalization.Calendar kC = new KoreanCalendar();
     System.Globalization.Calendar gC = new GregorianCalendar();
     DateTime dateTime = gC.ToDateTime(1200, 2, 29, 0, 0, 0, 0);
     int year = dateTime.Year;
     int month = dateTime.Month;
     int day = dateTime.Day;
     int era = gC.GetEra(dateTime);
     bool expectedValue = gC.IsLeapDay(year, month, day, era);
     bool actualValue;
     actualValue = kC.IsLeapDay(year + 2333, month, day, kC.GetEra(dateTime));
     Assert.Equal(expectedValue, actualValue);
 }