test/java/time/test/java/time/chrono/TestJapaneseChronoImpl.java

*** 59,74 ****
--- 59,77 ----
  import static org.testng.Assert.assertEquals;
  
  import java.time.LocalDate;
  import java.time.LocalTime;
  import java.time.OffsetDateTime;
+ import java.time.ZonedDateTime;
  import java.time.ZoneOffset;
  import java.time.chrono.JapaneseChronology;
+ import java.time.chrono.JapaneseEra;
  import java.time.chrono.JapaneseDate;
  import java.time.temporal.ChronoField;
  import java.time.temporal.ChronoUnit;
  import java.util.Calendar;
+ import java.util.GregorianCalendar;
  import java.util.Locale;
  import java.util.TimeZone;
  
  import org.testng.annotations.DataProvider;
  import org.testng.annotations.Test;
*** 83,93 ****
       * Range of years to check consistency with java.util.Calendar
       */
      @DataProvider(name="RangeVersusCalendar")
      Object[][] provider_rangeVersusCalendar() {
          return new Object[][] {
!             {LocalDate.of(1868, 1, 1), LocalDate.of(2100, 1, 1)},
          };
      }
  
      //-----------------------------------------------------------------------
      // Verify  Japanese Calendar matches java.util.Calendar for range
--- 86,96 ----
       * Range of years to check consistency with java.util.Calendar
       */
      @DataProvider(name="RangeVersusCalendar")
      Object[][] provider_rangeVersusCalendar() {
          return new Object[][] {
!             {LocalDate.of(1873, 1, 1), LocalDate.of(2100, 1, 1)},
          };
      }
  
      //-----------------------------------------------------------------------
      // Verify  Japanese Calendar matches java.util.Calendar for range
*** 116,121 ****
--- 119,152 ----
              jDate = jDate.plus(1, ChronoUnit.DAYS);
              cal.add(Calendar.DAY_OF_MONTH, 1);
          }
      }
  
+     //-----------------------------------------------------------------------
+     // Verify  Japanese Calendar matches java.util.Calendar for number of days
+     // in years 1 and 2.
+     //-----------------------------------------------------------------------
+     @Test
+     public void test_dayOfYearVsCalendar() {
+         Locale locale = Locale.forLanguageTag("ja-JP-u-ca-japanese");
+         Calendar cal = java.util.Calendar.getInstance(locale);
+ 
+         for (JapaneseEra era : JapaneseEra.values()) {
+             for (int year : new int[] {6, 7}) {
+                 JapaneseDate jd = JapaneseChronology.INSTANCE.dateYearDay(era, year, 1);
+                 OffsetDateTime jodt = OffsetDateTime.of(LocalDate.from(jd), LocalTime.MIN, ZoneOffset.UTC);
+                 long millis = jodt.toInstant().toEpochMilli();
+                 cal.setTimeZone(TimeZone.getTimeZone("GMT+00"));
+                 cal.setTimeInMillis(millis);
+ 
+                 assertEquals(jd.get(ChronoField.DAY_OF_YEAR), cal.get(Calendar.DAY_OF_YEAR),
+                         "different DAY_OF_YEAR values in " + era + ", year: " + year);
+                 assertEquals(jd.range(ChronoField.DAY_OF_YEAR).getMaximum(), cal.getActualMaximum(Calendar.DAY_OF_YEAR),
+                         "different maximum for DAY_OF_YEAR in " + era + ", year: " + year);
+                 assertEquals(jd.range(ChronoField.DAY_OF_YEAR).getMinimum(), cal.getActualMinimum(Calendar.DAY_OF_YEAR),
+                         "different minimum for DAY_OF_YEAR in " + era + ",  year: " + year);
+             }
+         }
+ 
+     }
+ 
  }