public void RoundtripFirstDay_Iso7()
{
// In the Gregorian calendar with a minimum of 7 days in the first
// week, Tuesday January 1st -9998 is in week year -9999. We should be able to
// round-trip.
var rule = RegularWeekYearRule.ForMinDaysInFirstWeek(7);
var date = new LocalDate(-9998, 1, 1);
Assert.AreEqual(date, rule.GetLocalDate(
rule.GetWeekYear(date),
rule.GetWeekOfWeekYear(date),
date.IsoDayOfWeek));
}
public void RoundtripLastDay_Iso1()
{
// In the Gregorian calendar with a minimum of 1 day in the first
// week, Friday December 31st 9999 is in week year 10000. We should be able to
// round-trip.
var rule = RegularWeekYearRule.ForMinDaysInFirstWeek(1);
var date = new LocalDate(9999, 12, 31);
Assert.AreEqual(date, rule.GetLocalDate(
rule.GetWeekYear(date),
rule.GetWeekOfWeekYear(date),
date.IsoDayOfWeek));
}
public void Gregorian(int year, IsoDayOfWeek firstDayOfYear, int maxMinDaysInFirstWeekForSameWeekYear)
{
var startOfCalendarYear = new LocalDate(year, 1, 1);
Assert.AreEqual(firstDayOfYear, startOfCalendarYear.IsoDayOfWeek);
// Rules which put the first day of the calendar year into the same week year
for (int i = 1; i <= maxMinDaysInFirstWeekForSameWeekYear; i++)
{
var rule = RegularWeekYearRule.ForMinDaysInFirstWeek(i);
Assert.AreEqual(year, rule.GetWeekYear(startOfCalendarYear));
Assert.AreEqual(1, rule.GetWeekOfWeekYear(startOfCalendarYear));
}
// Rules which put the first day of the calendar year into the previous week year
for (int i = maxMinDaysInFirstWeekForSameWeekYear + 1; i <= 7; i++)
{
var rule = RegularWeekYearRule.ForMinDaysInFirstWeek(i);
Assert.AreEqual(year - 1, rule.GetWeekYear(startOfCalendarYear));
Assert.AreEqual(rule.GetWeeksInWeekYear(year - 1), rule.GetWeekOfWeekYear(startOfCalendarYear));
}
}
