// ----------------------------------------------------------------------- // isBefore, isAfter, isEqual // ----------------------------------------------------------------------- @Test(dataProvider = "calendars") public void test_datetime_comparisons(Chronology chrono) { List<ChronoLocalDateTime<?>> dates = new ArrayList<>(); ChronoLocalDateTime<?> date = chrono.date(LocalDate.of(1900, 1, 1)).atTime(LocalTime.MIN); // Insert dates in order, no duplicates dates.add(date.minus(100, ChronoUnit.YEARS)); dates.add(date.minus(1, ChronoUnit.YEARS)); dates.add(date.minus(1, ChronoUnit.MONTHS)); dates.add(date.minus(1, ChronoUnit.WEEKS)); dates.add(date.minus(1, ChronoUnit.DAYS)); dates.add(date.minus(1, ChronoUnit.HOURS)); dates.add(date.minus(1, ChronoUnit.MINUTES)); dates.add(date.minus(1, ChronoUnit.SECONDS)); dates.add(date.minus(1, ChronoUnit.NANOS)); dates.add(date); dates.add(date.plus(1, ChronoUnit.NANOS)); dates.add(date.plus(1, ChronoUnit.SECONDS)); dates.add(date.plus(1, ChronoUnit.MINUTES)); dates.add(date.plus(1, ChronoUnit.HOURS)); dates.add(date.plus(1, ChronoUnit.DAYS)); dates.add(date.plus(1, ChronoUnit.WEEKS)); dates.add(date.plus(1, ChronoUnit.MONTHS)); dates.add(date.plus(1, ChronoUnit.YEARS)); dates.add(date.plus(100, ChronoUnit.YEARS)); // Check these dates against the corresponding dates for every calendar for (Chronology[] clist : data_of_calendars()) { List<ChronoLocalDateTime<?>> otherDates = new ArrayList<>(); Chronology chrono2 = clist[0]; for (ChronoLocalDateTime<?> d : dates) { otherDates.add(chrono2.date(d).atTime(d.toLocalTime())); } // Now compare the sequence of original dates with the sequence of converted dates for (int i = 0; i < dates.size(); i++) { ChronoLocalDateTime<?> a = dates.get(i); for (int j = 0; j < otherDates.size(); j++) { ChronoLocalDateTime<?> b = otherDates.get(j); int cmp = ChronoLocalDateTime.DATE_TIME_COMPARATOR.compare(a, b); if (i < j) { assertTrue(cmp < 0, a + " compare " + b); assertEquals(a.isBefore(b), true, a + " isBefore " + b); assertEquals(a.isAfter(b), false, a + " isAfter " + b); assertEquals(a.isEqual(b), false, a + " isEqual " + b); } else if (i > j) { assertTrue(cmp > 0, a + " compare " + b); assertEquals(a.isBefore(b), false, a + " isBefore " + b); assertEquals(a.isAfter(b), true, a + " isAfter " + b); assertEquals(a.isEqual(b), false, a + " isEqual " + b); } else { assertTrue(cmp == 0, a + " compare " + b); assertEquals(a.isBefore(b), false, a + " isBefore " + b); assertEquals(a.isAfter(b), false, a + " isAfter " + b); assertEquals(a.isEqual(b), true, a + " isEqual " + b); } } } } }