1 /*
   2  * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /*
  25  * @test
  26  * @bug 6902861
  27  * @summary Test for a workaround when WEEK_OF_YEAR and YEAR are out of sync.
  28  */
  29 
  30 import java.util.*;
  31 import static java.util.GregorianCalendar.*;
  32 
  33 public class Bug6902861 {
  34     static int errors = 0;
  35 
  36     public static void main(String [] args) {
  37         Locale loc = Locale.getDefault();
  38         try {
  39             Locale.setDefault(Locale.GERMANY);
  40             test(2010, JANUARY, 1, +1, 1);
  41             test(2010, JANUARY, 1, +2, 2);
  42             test(2010, JANUARY, 1, -1, 52);
  43             test(2010, JANUARY, 1, -2, 51);
  44             test(2008, DECEMBER, 31, +1, 1);
  45             test(2008, DECEMBER, 31, +2, 2);
  46             test(2008, DECEMBER, 31, -1, 52);
  47             test(2008, DECEMBER, 31, -2, 51);
  48             if (errors > 0) {
  49                 throw new RuntimeException("Failed");
  50             }
  51         } finally {
  52             Locale.setDefault(loc);
  53         }
  54     }
  55 
  56     static void test(int year, int month, int dayOfMonth, int amount, int expected) {
  57         String date = String.format("%04d-%02d-%02d", year, month+1, dayOfMonth);
  58         Calendar calendar = new GregorianCalendar(year, month, dayOfMonth);
  59         int week = calendar.get(WEEK_OF_YEAR); // fix the date
  60         calendar.roll(WEEK_OF_YEAR, amount);
  61         int got = calendar.get(WEEK_OF_YEAR);
  62         int y = calendar.get(YEAR);
  63         if (got != expected || y != year) {
  64             System.err.printf("%s: roll %+d: got: %d,%2d; expected: %d,%2d%n",
  65                               date, amount, y, got, year, expected);
  66             errors++;
  67         }
  68     }
  69 }