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   * version 2 for more details (a copy is included in the LICENSE file that
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  /*
   * @test
   * @bug 4267450
   * @summary Unit test for week date support
   */
  
  import java.text.*;
  import java.util.*;
  import static java.util.GregorianCalendar.*;
  
  public class WeekDateTest {
  
      // Week dates are in the ISO numbering for day-of-week.
      static int[][][] data = {
          // Calendar year-date, Week year-date
          {{ 2005, 01, 01}, { 2004, 53, 6}},
          {{ 2005, 01, 02}, { 2004, 53, 7}},
          {{ 2005, 12, 31}, { 2005, 52, 6}},
          {{ 2007, 01, 01}, { 2007, 01, 1}},
          {{ 2007, 12, 30}, { 2007, 52, 7}},
          {{ 2007, 12, 31}, { 2008, 01, 1}},
          {{ 2008, 01, 01}, { 2008, 01, 2}},
          {{ 2008, 12, 29}, { 2009, 01, 1}},
          {{ 2008, 12, 31}, { 2009, 01, 3}},
          {{ 2009, 01, 01}, { 2009, 01, 4}},
          {{ 2009, 12, 31}, { 2009, 53, 4}},
          {{ 2010, 01, 03}, { 2009, 53, 7}},
          {{ 2009, 12, 31}, { 2009, 53, 4}},
          {{ 2010, 01, 01}, { 2009, 53, 5}},
          {{ 2010, 01, 02}, { 2009, 53, 6}},
          {{ 2010, 01, 03}, { 2009, 53, 7}},
          {{ 2008, 12, 28}, { 2008, 52, 7}},
          {{ 2008, 12, 29}, { 2009, 01, 1}},
          {{ 2008, 12, 30}, { 2009, 01, 2}},
          {{ 2008, 12, 31}, { 2009, 01, 3}},
          {{ 2009, 01, 01}, { 2009, 01, 4}}
      };
  
      // Data for leniency test
      static final int[][][] leniencyData = {
          {{ 2008, 12, 28}, { 2009,  0, 7}},
          {{ 2008, 12, 21}, { 2009, -1, 7}},
          {{ 2009,  1,  4}, { 2008, 53, 7}},
      };
  
      static final int[][] invalidData = {
          { 2010, -1,  1},
          { 2010, 00,  1},
          { 2010, 55,  1},
          { 2010, 03,  0},
          { 2010, 04,  8},
          { 2010, 04, 19},
          { 2010, 05, -1},
      };
  
      public static void main(String[] args) {
          GregorianCalendar cal = newCalendar();
          for (int[][] dates : data) {
              int[] expected = dates[0];
              int[] weekDate = dates[1];
              // Convert ISO 8601 day-of-week to Calendar.DAY_OF_WEEK.
              int dayOfWeek = getCalendarDayOfWeek(weekDate[2]);
  
              cal.clear();
              cal.setWeekDate(weekDate[0], weekDate[1], dayOfWeek);
              if (cal.get(YEAR) != expected[0]
                  || cal.get(MONTH)+1 != expected[1]
                  || cal.get(DAY_OF_MONTH) != expected[2]) {
                  String s = String.format("got=%4d-%02d-%02d, expected=%4d-%02d-%02d",
                                 cal.get(YEAR), cal.get(MONTH)+1, cal.get(DAY_OF_MONTH),
                                 expected[0], expected[1], expected[2]);
                  throw new RuntimeException(s);
              }
              if (cal.getWeekYear() != weekDate[0]
                  || cal.get(WEEK_OF_YEAR) != weekDate[1]
                  || cal.get(DAY_OF_WEEK) != dayOfWeek) {
                 String s = String.format(
                     "got=%4d-W%02d-%d, expected=%4d-W%02d-%d (not ISO day-of-week)",
                     cal.getWeekYear(), cal.get(WEEK_OF_YEAR), cal.get(DAY_OF_WEEK),
                     weekDate[0], weekDate[1], dayOfWeek);
                 throw new RuntimeException(s);
             }
         }
 
         // Test getWeeksInWeekYear().
         // If we avoid the first week of January and the last week of
         // December, getWeeksInWeekYear() and
         // getActualMaximum(WEEK_OF_YEAR) values should be the same.
         for (int year = 2000; year <= 2100; year++) {
             cal.clear();
             cal.set(year, JUNE, 1);
             int n = cal.getWeeksInWeekYear();
             if (n != cal.getActualMaximum(WEEK_OF_YEAR)) {
                 String s = String.format("getWeeksInWeekYear() = %d, "
                                          + "getActualMaximum(WEEK_OF_YEAR) = %d%n",
                                          n, cal.getActualMaximum(WEEK_OF_YEAR));
                 throw new RuntimeException(s);
             }
 
             cal.setWeekDate(cal.getWeekYear(), 1, MONDAY);
             if (cal.getWeeksInWeekYear() != n) {
                 String s = String.format("first day: got %d, expected %d%n",
                                          cal.getWeeksInWeekYear(), n);
                 throw new RuntimeException(s);
             }
 
             cal.setWeekDate(cal.getWeekYear(), n, SUNDAY);
             if (cal.getWeeksInWeekYear() != n) {
                 String s = String.format("last day: got %d, expected %d%n",
                                          cal.getWeeksInWeekYear(), n);
                 throw new RuntimeException(s);
             }
         }
 
         // Test lenient mode with out of range values.
         for (int[][] dates : leniencyData) {
             int[] expected = dates[0];
             int[] weekDate = dates[1];
             // Convert ISO 8601 day-of-week to Calendar.DAY_OF_WEEK.
             int dayOfWeek = getCalendarDayOfWeek(weekDate[2]);
 
             cal.clear();
             cal.setWeekDate(weekDate[0], weekDate[1], dayOfWeek);
             if (cal.get(YEAR) != expected[0]
                 || cal.get(MONTH)+1 != expected[1]
                 || cal.get(DAY_OF_MONTH) != expected[2]) {
                 String s = String.format("got=%4d-%02d-%02d, expected=%4d-%02d-%02d",
                                cal.get(YEAR), cal.get(MONTH)+1, cal.get(DAY_OF_MONTH),
                                expected[0], expected[1], expected[2]);
                 throw new RuntimeException(s);
             }
         }
 
         // Test non-lenient mode
         cal.setLenient(false);
         for (int[] date : invalidData) {
             cal.clear();
             try {
                 // Use the raw dayOfWeek value as invalid data
                 cal.setWeekDate(date[0], date[1], date[2]);
                 String s = String.format("didn't throw an IllegalArgumentException with"
                                          + " %d, %d, %d",date[0], date[1], date[2]);
                 throw new RuntimeException(s);
             } catch (IllegalArgumentException e) {
                 // OK
             }
         }
     }
 
     private static GregorianCalendar newCalendar() {
         // Use GMT to avoid any surprises related DST transitions.
         GregorianCalendar cal = new GregorianCalendar(TimeZone.getTimeZone("GMT"));
         if (!cal.isWeekDateSupported()) {
             throw new RuntimeException("Week dates not supported");
         }
         // Setup the ISO 8601 compatible parameters
         cal.setFirstDayOfWeek(MONDAY);
         cal.setMinimalDaysInFirstWeek(4);
         return cal;
     }
 
     private static int getCalendarDayOfWeek(int isoDayOfWeek) {
         return (isoDayOfWeek == 7) ? SUNDAY : isoDayOfWeek + 1;
     }
 }