PersianCalendar extends AbstractCalendar { @Override public DateTimeUnit fromIso( Date date ) { return fromIso( DateTimeUnit.fromJdkDate( date ) ); }  static Calendar getInstance(); @Override String name(); @Override DateTimeUnit toIso( DateTimeUnit dateTimeUnit ); @Override DateTimeUnit fromIso( Date date ); @Override DateTimeUnit fromIso( DateTimeUnit dateTimeUnit ); @Override DateInterval toInterval( DateTimeUnit dateTimeUnit, DateIntervalType type, int offset, int length ); @Override int daysInYear( int year ); @Override int daysInMonth( int year, int month ); @Override int weeksInYear( int year ); @Override int isoWeek( DateTimeUnit dateTimeUnit ); @Override int week( DateTimeUnit dateTimeUnit ); @Override int isoWeekday( DateTimeUnit dateTimeUnit ); @Override int weekday( DateTimeUnit dateTimeUnit ); @Override String nameOfMonth( int month ); @Override String shortNameOfMonth( int month ); @Override String nameOfDay( int day ); @Override String shortNameOfDay( int day ); @Override DateTimeUnit minusYears( DateTimeUnit dateTimeUnit, int years ); @Override DateTimeUnit minusMonths( DateTimeUnit dateTimeUnit, int months ); @Override DateTimeUnit minusWeeks( DateTimeUnit dateTimeUnit, int weeks ); @Override DateTimeUnit minusDays( DateTimeUnit dateTimeUnit, int days ); @Override DateTimeUnit plusYears( DateTimeUnit dateTimeUnit, int years ); @Override DateTimeUnit plusMonths( DateTimeUnit dateTimeUnit, int months ); @Override DateTimeUnit plusWeeks( DateTimeUnit dateTimeUnit, int weeks ); @Override DateTimeUnit plusDays( DateTimeUnit dateTimeUnit, int days ); @Override DateTimeUnit isoStartOfYear( int year );  }
@Test public void testFromIso() { assertEquals( new DateTimeUnit( 1372, 1, 1, false ), calendar.fromIso( new DateTimeUnit( 1993, 3, 21, true ) ) ); assertEquals( new DateTimeUnit( 1399, 1, 1, false ), calendar.fromIso( new DateTimeUnit( 2020, 3, 20, true ) ) ); assertEquals( new DateTimeUnit( 1383, 1, 1, false ), calendar.fromIso( new DateTimeUnit( 2004, 3, 20, true ) ) ); assertEquals( new DateTimeUnit( 1383, 1, 1, false ), calendar.fromIso( new DateTimeUnit( 1383, 1, 1, true ) ) ); }