public void test_weekOfMonth_buildDate_sun7() {
// July 2011 starts on a Friday
// Fri/Sat 1st/2nd are week 0
WeekRules wr = WeekRules.of(SUNDAY, 7);
for (int i = 1; i <= 31; i++) {
int w = MathUtils.floorDiv(i - 3, 7) + 1;
int d = MathUtils.floorMod(i - 3, 7) + 1;
CalendricalEngine engine =
CalendricalEngine.merge(
YearMonth.of(2011, JULY), wr.weekOfMonth().field(w), wr.dayOfWeek().field(d));
assertEquals(engine.derive(LocalDate.rule()), LocalDate.of(2011, JULY, i));
}
}
public void test_weekOfMonth_getValue_sun7() {
// July 2011 starts on a Friday
// Fri/Sat 1st/2nd are week 0
DateTimeRule rule = WeekRules.of(SUNDAY, 7).weekOfMonth();
for (int i = 1; i <= 31; i++) {
int w = MathUtils.floorDiv(i - 3, 7) + 1; // 3rd is start of week 1
assertEquals(rule.getValue(LocalDate.of(2011, 7, i)), rule.field(w));
}
}
/**
* Calculates the week of week-based-year.
*
* @param date the date to use, not null
* @return the week
*/
static int getWeekOfWeekBasedYearFromDate(LocalDate date) {
int wby = getWeekBasedYearFromDate(date);
LocalDate yearStart = LocalDate.of(wby, MonthOfYear.JANUARY, 4);
return MathUtils.safeToInt(
(date.toModifiedJulianDay()
- yearStart.toModifiedJulianDay()
+ yearStart.getDayOfWeek().getValue()
- 1)
/ 7
+ 1);
}
/**
* Gets the length of this week-based-year in weeks.
*
* @return the length of this week-based-year in weeks, either 52 or 53
*/
public int lengthInWeeks() {
// TODO: optimize
LocalDate start = LocalDate.of(weekyear, MonthOfYear.JANUARY, 4);
LocalDate end = LocalDate.of(weekyear, MonthOfYear.DECEMBER, 28);
long weeksAsLong =
(end.toModifiedJulianDay()
+ (8 - end.getDayOfWeek().getValue())
- start.toModifiedJulianDay()
+ start.getDayOfWeek().getValue()
- 1)
/ 7;
return MathUtils.safeToInt(weeksAsLong);
}
/**
* Sets the calendrical being output.
*
* @param calendrical the calendrical, not null
*/
public void setCalendrical(Calendrical calendrical) {
MathUtils.checkNotNull(calendrical, "Calendrical must not be null");
this.calendrical = calendrical;
}
/**
* Sets the formatting symbols.
*
* <p>The symbols control the localization of numeric output.
*
* @param symbols the formatting symbols, not null
*/
public void setSymbols(DateTimeFormatSymbols symbols) {
MathUtils.checkNotNull(symbols, "DateTimeFormatSymbols must not be null");
this.symbols = symbols;
}
/**
* Sets the locale.
*
* <p>This locale is used to control localization in the print output except where localization is
* controlled by the symbols.
*
* @param locale the locale, not null
*/
public void setLocale(Locale locale) {
MathUtils.checkNotNull(locale, "Locale must not be null");
this.locale = locale;
}