public void NegTest2()
{
System.Globalization.Calendar tc = new TaiwanCalendar();
Random rand = new Random(-55);
int year = tc.MinSupportedDateTime.Year - rand.Next(1, Int32.MaxValue);
int month = rand.Next(1, 13);
int day = rand.Next(1, 28);
int era = Calendar.CurrentEra;
Assert.Throws<ArgumentOutOfRangeException>(() =>
{
tc.IsLeapDay(year, month, day, era);
});
}