1 /*
   2  * Copyright (c) 2012, 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.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 /*
  27  * Copyright (c) 2008-2012, Stephen Colebourne & Michael Nascimento Santos
  28  *
  29  * All rights reserved.
  30  *
  31  * Redistribution and use in source and binary forms, with or without
  32  * modification, are permitted provided that the following conditions are met:
  33  *
  34  *  * Redistributions of source code must retain the above copyright notice,
  35  *    this list of conditions and the following disclaimer.
  36  *
  37  *  * Redistributions in binary form must reproduce the above copyright notice,
  38  *    this list of conditions and the following disclaimer in the documentation
  39  *    and/or other materials provided with the distribution.
  40  *
  41  *  * Neither the name of JSR-310 nor the names of its contributors
  42  *    may be used to endorse or promote products derived from this software
  43  *    without specific prior written permission.
  44  *
  45  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  46  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  47  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  48  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
  49  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  50  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  51  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  52  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  53  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  54  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  55  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  56  */
  57 package tck.java.time.temporal;
  58 
  59 import static java.time.temporal.ChronoField.DAY_OF_MONTH;
  60 import static java.time.temporal.ChronoField.DAY_OF_WEEK;
  61 import static java.time.temporal.ChronoField.DAY_OF_YEAR;
  62 import static java.time.temporal.ChronoField.MONTH_OF_YEAR;
  63 import static java.time.temporal.ChronoField.YEAR;
  64 
  65 import static org.testng.Assert.assertEquals;
  66 import static org.testng.Assert.assertSame;
  67 
  68 import java.io.IOException;
  69 import java.time.DayOfWeek;
  70 import java.time.LocalDate;
  71 import java.time.format.DateTimeFormatter;
  72 import java.time.format.DateTimeFormatterBuilder;
  73 import java.time.temporal.ChronoUnit;
  74 import java.time.temporal.JulianFields;
  75 import java.time.temporal.TemporalField;
  76 import java.time.temporal.ValueRange;
  77 import java.time.temporal.WeekFields;
  78 
  79 import org.testng.annotations.DataProvider;
  80 import org.testng.annotations.Test;
  81 import tck.java.time.AbstractTCKTest;
  82 
  83 /**
  84  * Test WeekFields.
  85  */
  86 @Test
  87 public class TCKWeekFields extends AbstractTCKTest {
  88 
  89     @Test(dataProvider="weekFields")
  90     public void test_of_DayOfWeek_int_singleton(DayOfWeek firstDayOfWeek, int minDays) {
  91         WeekFields week = WeekFields.of(firstDayOfWeek, minDays);
  92         assertEquals(week.getFirstDayOfWeek(), firstDayOfWeek, "Incorrect firstDayOfWeek");
  93         assertEquals(week.getMinimalDaysInFirstWeek(), minDays, "Incorrect MinimalDaysInFirstWeek");
  94         assertSame(WeekFields.of(firstDayOfWeek, minDays), week);
  95     }
  96 
  97     //-----------------------------------------------------------------------
  98     @Test(dataProvider="weekFields")
  99     public void test_basics(DayOfWeek firstDayOfWeek, int minDays) {
 100         WeekFields week = WeekFields.of(firstDayOfWeek, minDays);
 101         assertEquals(week.dayOfWeek().isDateBased(), true);
 102         assertEquals(week.dayOfWeek().isTimeBased(), false);
 103 
 104         assertEquals(week.weekOfMonth().isDateBased(), true);
 105         assertEquals(week.weekOfMonth().isTimeBased(), false);
 106 
 107         assertEquals(week.weekOfYear().isDateBased(), true);
 108         assertEquals(week.weekOfYear().isTimeBased(), false);
 109 
 110         assertEquals(week.weekOfWeekBasedYear().isDateBased(), true);
 111         assertEquals(week.weekOfWeekBasedYear().isTimeBased(), false);
 112 
 113         assertEquals(week.weekBasedYear().isDateBased(), true);
 114         assertEquals(week.weekBasedYear().isTimeBased(), false);
 115     }
 116 
 117     //-----------------------------------------------------------------------
 118     @Test
 119     public void test_dayOfWeekField_simpleGet() {
 120         LocalDate date = LocalDate.of(2000, 1, 10);  // Known to be ISO Monday
 121         assertEquals(date.get(WeekFields.ISO.dayOfWeek()), 1);
 122         assertEquals(date.get(WeekFields.of(DayOfWeek.MONDAY, 1).dayOfWeek()), 1);
 123         assertEquals(date.get(WeekFields.of(DayOfWeek.MONDAY, 7).dayOfWeek()), 1);
 124         assertEquals(date.get(WeekFields.SUNDAY_START.dayOfWeek()), 2);
 125         assertEquals(date.get(WeekFields.of(DayOfWeek.SUNDAY, 1).dayOfWeek()), 2);
 126         assertEquals(date.get(WeekFields.of(DayOfWeek.SUNDAY, 7).dayOfWeek()), 2);
 127         assertEquals(date.get(WeekFields.of(DayOfWeek.SATURDAY, 1).dayOfWeek()), 3);
 128         assertEquals(date.get(WeekFields.of(DayOfWeek.FRIDAY, 1).dayOfWeek()), 4);
 129         assertEquals(date.get(WeekFields.of(DayOfWeek.TUESDAY, 1).dayOfWeek()), 7);
 130     }
 131 
 132     @Test
 133     public void test_dayOfWeekField_simpleSet() {
 134         LocalDate date = LocalDate.of(2000, 1, 10);  // Known to be ISO Monday
 135         assertEquals(date.with(WeekFields.ISO.dayOfWeek(), 2), LocalDate.of(2000, 1, 11));
 136         assertEquals(date.with(WeekFields.ISO.dayOfWeek(), 7), LocalDate.of(2000, 1, 16));
 137 
 138         assertEquals(date.with(WeekFields.SUNDAY_START.dayOfWeek(), 3), LocalDate.of(2000, 1, 11));
 139         assertEquals(date.with(WeekFields.SUNDAY_START.dayOfWeek(), 7), LocalDate.of(2000, 1, 15));
 140 
 141         assertEquals(date.with(WeekFields.of(DayOfWeek.SATURDAY, 1).dayOfWeek(), 4), LocalDate.of(2000, 1, 11));
 142         assertEquals(date.with(WeekFields.of(DayOfWeek.TUESDAY, 1).dayOfWeek(), 1), LocalDate.of(2000, 1, 4));
 143     }
 144 
 145     @Test(dataProvider="weekFields")
 146     public void test_dayOfWeekField(DayOfWeek firstDayOfWeek, int minDays) {
 147         LocalDate day = LocalDate.of(2000, 1, 10);  // Known to be ISO Monday
 148         WeekFields week = WeekFields.of(firstDayOfWeek, minDays);
 149         TemporalField f = week.dayOfWeek();
 150 
 151         for (int i = 1; i <= 7; i++) {
 152             assertEquals(day.get(f), (7 + day.getDayOfWeek().getValue() - firstDayOfWeek.getValue()) % 7 + 1);
 153             day = day.plusDays(1);
 154         }
 155     }
 156 
 157     @Test(dataProvider="weekFields")
 158     public void test_weekOfMonthField(DayOfWeek firstDayOfWeek, int minDays) {
 159         LocalDate day = LocalDate.of(2012, 12, 31);  // Known to be ISO Monday
 160         WeekFields week = WeekFields.of(firstDayOfWeek, minDays);
 161         TemporalField dowField = week.dayOfWeek();
 162         TemporalField womField = week.weekOfMonth();
 163 
 164         DayOfWeek isoDOW = day.getDayOfWeek();
 165         int dow = (7 + isoDOW.getValue() - firstDayOfWeek.getValue()) % 7 + 1;
 166 
 167         for (int i = 1; i <= 15; i++) {
 168             int actualDOW = day.get(dowField);
 169             int actualWOM = day.get(womField);
 170 
 171             // Verify that the combination of day of week and week of month can be used
 172             // to reconstruct the same date.
 173             LocalDate day1 = day.withDayOfMonth(1);
 174             int offset = - (day1.get(dowField) - 1);
 175 
 176             int week1 = day1.get(womField);
 177             if (week1 == 0) {
 178                 // week of the 1st is partial; start with first full week
 179                 offset += 7;
 180             }
 181 
 182             offset += actualDOW - 1;
 183             offset += (actualWOM - 1) * 7;
 184             LocalDate result = day1.plusDays(offset);
 185 
 186             assertEquals(result, day, "Incorrect dayOfWeek or weekOfMonth: "
 187                     + String.format("%s, ISO Dow: %s, offset: %s, actualDOW: %s, actualWOM: %s, expected: %s, result: %s%n",
 188                     week, day.getDayOfWeek(), offset, actualDOW, actualWOM, day, result));
 189             day = day.plusDays(1);
 190         }
 191     }
 192 
 193     @Test(dataProvider="weekFields")
 194     public void test_weekOfYearField(DayOfWeek firstDayOfWeek, int minDays) {
 195         LocalDate day = LocalDate.of(2012, 12, 31);  // Known to be ISO Monday
 196         WeekFields week = WeekFields.of(firstDayOfWeek, minDays);
 197         TemporalField dowField = week.dayOfWeek();
 198         TemporalField woyField = week.weekOfYear();
 199 
 200         DayOfWeek isoDOW = day.getDayOfWeek();
 201         int dow = (7 + isoDOW.getValue() - firstDayOfWeek.getValue()) % 7 + 1;
 202 
 203         for (int i = 1; i <= 15; i++) {
 204             int actualDOW = day.get(dowField);
 205             int actualWOY = day.get(woyField);
 206 
 207             // Verify that the combination of day of week and week of month can be used
 208             // to reconstruct the same date.
 209             LocalDate day1 = day.withDayOfYear(1);
 210             int offset = - (day1.get(dowField) - 1);
 211             int week1 = day1.get(woyField);
 212             if (week1 == 0) {
 213                 // week of the 1st is partial; start with first full week
 214                 offset += 7;
 215             }
 216             offset += actualDOW - 1;
 217             offset += (actualWOY - 1) * 7;
 218             LocalDate result = day1.plusDays(offset);
 219 
 220             assertEquals(result, day, "Incorrect dayOfWeek or weekOfYear "
 221                     + String.format("%s, ISO Dow: %s, offset: %s, actualDOW: %s, actualWOM: %s, expected: %s, result: %s%n",
 222                     week, day.getDayOfWeek(), offset, actualDOW, actualWOY, day, result));
 223             day = day.plusDays(1);
 224         }
 225     }
 226 
 227     /**
 228      * Verify that the date can be reconstructed from the DOW, WeekOfWeekBasedYear,
 229      * and WeekBasedYear for every combination of start of week
 230      * and minimal days in week.
 231      * @param firstDayOfWeek the first day of the week
 232      * @param minDays the minimum number of days in the week
 233      */
 234     @Test(dataProvider="weekFields")
 235     public void test_weekOfWeekBasedYearField(DayOfWeek firstDayOfWeek, int minDays) {
 236         LocalDate day = LocalDate.of(2012, 12, 31);  // Known to be ISO Monday
 237         WeekFields weekDef = WeekFields.of(firstDayOfWeek, minDays);
 238         TemporalField dowField = weekDef.dayOfWeek();
 239         TemporalField wowbyField = weekDef.weekOfWeekBasedYear();
 240         TemporalField yowbyField = weekDef.weekBasedYear();
 241 
 242         for (int i = 1; i <= 15; i++) {
 243             int actualDOW = day.get(dowField);
 244             int actualWOWBY = day.get(wowbyField);
 245             int actualYOWBY = day.get(yowbyField);
 246 
 247             // Verify that the combination of day of week and week of month can be used
 248             // to reconstruct the same date.
 249             LocalDate day1 = LocalDate.of(actualYOWBY, 1, 1);
 250             DayOfWeek isoDOW = day1.getDayOfWeek();
 251             int dow = (7 + isoDOW.getValue() - firstDayOfWeek.getValue()) % 7 + 1;
 252 
 253             int weekStart = Math.floorMod(1 - dow, 7);
 254             if (weekStart + 1 > weekDef.getMinimalDaysInFirstWeek()) {
 255                 // The previous week has the minimum days in the current month to be a 'week'
 256                 weekStart -= 7;
 257             }
 258             weekStart += actualDOW - 1;
 259             weekStart += (actualWOWBY - 1) * 7;
 260             LocalDate result = day1.plusDays(weekStart);
 261 
 262             assertEquals(result, day, "Incorrect dayOfWeek or weekOfYear "
 263                     + String.format("%s, ISO Dow: %s, weekStart: %s, actualDOW: %s, actualWOWBY: %s, YearOfWBY: %d, expected day: %s, result: %s%n",
 264                     weekDef, day.getDayOfWeek(), weekStart, actualDOW, actualWOWBY, actualYOWBY, day, result));
 265             day = day.plusDays(1);
 266         }
 267     }
 268 
 269     @Test(dataProvider="weekFields")
 270     public void test_fieldRanges(DayOfWeek firstDayOfWeek, int minDays) {
 271         WeekFields weekDef = WeekFields.of(firstDayOfWeek, minDays);
 272         TemporalField womField = weekDef.weekOfMonth();
 273         TemporalField woyField = weekDef.weekOfYear();
 274 
 275         LocalDate day = LocalDate.of(2012, 11, 30);
 276         LocalDate endDay = LocalDate.of(2013, 1, 2);
 277         while (day.isBefore(endDay)) {
 278             LocalDate last = day.with(DAY_OF_MONTH, day.lengthOfMonth());
 279             int lastWOM = last.get(womField);
 280             LocalDate first = day.with(DAY_OF_MONTH, 1);
 281             int firstWOM = first.get(womField);
 282             ValueRange rangeWOM = day.range(womField);
 283             assertEquals(rangeWOM.getMinimum(), firstWOM,
 284                     "Range min should be same as WeekOfMonth for first day of month: "
 285                     + first + ", " + weekDef);
 286             assertEquals(rangeWOM.getMaximum(), lastWOM,
 287                     "Range max should be same as WeekOfMonth for last day of month: "
 288                     + last + ", " + weekDef);
 289 
 290             last = day.with(DAY_OF_YEAR, day.lengthOfYear());
 291             int lastWOY = last.get(woyField);
 292             first = day.with(DAY_OF_YEAR, 1);
 293             int firstWOY = first.get(woyField);
 294             ValueRange rangeWOY = day.range(woyField);
 295             assertEquals(rangeWOY.getMinimum(), firstWOY,
 296                     "Range min should be same as WeekOfYear for first day of Year: "
 297                     + day + ", " + weekDef);
 298             assertEquals(rangeWOY.getMaximum(), lastWOY,
 299                     "Range max should be same as WeekOfYear for last day of Year: "
 300                     + day + ", " + weekDef);
 301 
 302             day = day.plusDays(1);
 303         }
 304     }
 305 
 306     //-----------------------------------------------------------------------
 307     // withDayOfWeek()
 308     //-----------------------------------------------------------------------
 309     @Test(dataProvider="weekFields")
 310     public void test_withDayOfWeek(DayOfWeek firstDayOfWeek, int minDays) {
 311         LocalDate day = LocalDate.of(2012, 12, 15);  // Safely in the middle of a month
 312         WeekFields week = WeekFields.of(firstDayOfWeek, minDays);
 313         TemporalField dowField = week.dayOfWeek();
 314         TemporalField womField = week.weekOfMonth();
 315         TemporalField woyField = week.weekOfYear();
 316 
 317         int wom = day.get(womField);
 318         int woy = day.get(woyField);
 319         for (int dow = 1; dow <= 7; dow++) {
 320             LocalDate result = day.with(dowField, dow);
 321             assertEquals(result.get(dowField), dow, String.format("Incorrect new Day of week: %s", result));
 322             assertEquals(result.get(womField), wom, "Week of Month should not change");
 323             assertEquals(result.get(woyField), woy, "Week of Year should not change");
 324         }
 325     }
 326 
 327     @Test(dataProvider="weekFields")
 328     public void test_rangeWeekOfWeekBasedYear(DayOfWeek firstDayOfWeek, int minDays) {
 329         WeekFields weekFields = WeekFields.of(firstDayOfWeek, minDays);
 330         TemporalField dowField = weekFields.dayOfWeek();
 331         TemporalField wowByField = weekFields.weekOfWeekBasedYear();
 332 
 333         LocalDate day1 = LocalDate.of(2012, 1, weekFields.getMinimalDaysInFirstWeek());
 334         day1 = day1.with(wowByField, 1).with(dowField, 1);
 335 
 336         LocalDate day2 = LocalDate.of(2013, 1, weekFields.getMinimalDaysInFirstWeek());
 337         day2 = day2.with(wowByField, 1).with(dowField, 1);
 338 
 339         int expectedWeeks = (int)ChronoUnit.DAYS.between(day1, day2) / 7;
 340 
 341         ValueRange range = day1.range(wowByField);
 342         assertEquals(range.getMaximum(), expectedWeeks, "Range incorrect");
 343     }
 344 
 345     @Test(dataProvider="weekFields")
 346     public void test_withWeekOfWeekBasedYear(DayOfWeek firstDayOfWeek, int minDays) {
 347         LocalDate day = LocalDate.of(2012, 12, 31);
 348         WeekFields week = WeekFields.of(firstDayOfWeek, minDays);
 349         TemporalField dowField = week.dayOfWeek();
 350         TemporalField wowbyField = week.weekOfWeekBasedYear();
 351         TemporalField yowbyField = week.weekBasedYear();
 352 
 353         int dowExpected = (day.get(dowField) - 1) % 7 + 1;
 354         LocalDate dowDate = day.with(dowField, dowExpected);
 355         int dowResult = dowDate.get(dowField);
 356         assertEquals(dowResult, dowExpected, "Localized DayOfWeek not correct; " + day + " -->" + dowDate);
 357 
 358         int weekExpected = day.get(wowbyField) + 1;
 359         ValueRange range = day.range(wowbyField);
 360         weekExpected = ((weekExpected - 1) % (int)range.getMaximum()) + 1;
 361         LocalDate weekDate = day.with(wowbyField, weekExpected);
 362         int weekResult = weekDate.get(wowbyField);
 363         assertEquals(weekResult, weekExpected, "Localized WeekOfWeekBasedYear not correct; " + day + " -->" + weekDate);
 364 
 365         int yearExpected = day.get(yowbyField) + 1;
 366 
 367         LocalDate yearDate = day.with(yowbyField, yearExpected);
 368         int yearResult = yearDate.get(yowbyField);
 369         assertEquals(yearResult, yearExpected, "Localized WeekBasedYear not correct; " + day  + " --> " + yearDate);
 370 
 371         range = yearDate.range(wowbyField);
 372         weekExpected = Math.min(day.get(wowbyField), (int)range.getMaximum());
 373 
 374         int weekActual = yearDate.get(wowbyField);
 375         assertEquals(weekActual, weekExpected, "Localized WeekOfWeekBasedYear week should not change; " + day + " --> " + yearDate + ", actual: " + weekActual + ", weekExpected: " + weekExpected);
 376     }
 377 
 378     //-----------------------------------------------------------------------
 379     @Test(dataProvider="weekFields")
 380     public void test_parse_resolve_localizedWom(DayOfWeek firstDayOfWeek, int minDays) {
 381         LocalDate date = LocalDate.of(2012, 12, 15);
 382         WeekFields week = WeekFields.of(firstDayOfWeek, minDays);
 383         TemporalField womField = week.weekOfMonth();
 384 
 385         for (int i = 1; i <= 60; i++) {
 386             // Test that with dayOfWeek and Week of month it computes the date
 387             DateTimeFormatter f = new DateTimeFormatterBuilder()
 388                     .appendValue(YEAR).appendLiteral('-')
 389                     .appendValue(MONTH_OF_YEAR).appendLiteral('-')
 390                     .appendValue(womField).appendLiteral('-')
 391                     .appendValue(DAY_OF_WEEK).toFormatter();
 392             String str = date.getYear() + "-" + date.getMonthValue() + "-" +
 393                     date.get(womField) + "-" + date.get(DAY_OF_WEEK);
 394             LocalDate parsed = LocalDate.parse(str, f);
 395             assertEquals(parsed, date, " ::" + str + "::" + i);
 396 
 397             date = date.plusDays(1);
 398         }
 399     }
 400 
 401     @Test(dataProvider="weekFields")
 402     public void test_parse_resolve_localizedWomDow(DayOfWeek firstDayOfWeek, int minDays) {
 403         LocalDate date = LocalDate.of(2012, 12, 15);
 404         WeekFields week = WeekFields.of(firstDayOfWeek, minDays);
 405         TemporalField dowField = week.dayOfWeek();
 406         TemporalField womField = week.weekOfMonth();
 407 
 408         for (int i = 1; i <= 15; i++) {
 409             // Test that with dayOfWeek and Week of month it computes the date
 410             DateTimeFormatter f = new DateTimeFormatterBuilder()
 411                     .appendValue(YEAR).appendLiteral('-')
 412                     .appendValue(MONTH_OF_YEAR).appendLiteral('-')
 413                     .appendValue(womField).appendLiteral('-')
 414                     .appendValue(dowField).toFormatter();
 415             String str = date.getYear() + "-" + date.getMonthValue() + "-" +
 416                     date.get(womField) + "-" + date.get(dowField);
 417             LocalDate parsed = LocalDate.parse(str, f);
 418             assertEquals(parsed, date, " :: " + str + " " + i);
 419 
 420             date = date.plusDays(1);
 421         }
 422     }
 423 
 424     @Test(dataProvider="weekFields")
 425     public void test_parse_resolve_localizedWoy(DayOfWeek firstDayOfWeek, int minDays) {
 426         LocalDate date = LocalDate.of(2012, 12, 15);
 427         WeekFields week = WeekFields.of(firstDayOfWeek, minDays);
 428         TemporalField woyField = week.weekOfYear();
 429 
 430         for (int i = 1; i <= 60; i++) {
 431             // Test that with dayOfWeek and Week of month it computes the date
 432             DateTimeFormatter f = new DateTimeFormatterBuilder()
 433                     .appendValue(YEAR).appendLiteral('-')
 434                     .appendValue(MONTH_OF_YEAR).appendLiteral('-')
 435                     .appendValue(woyField).appendLiteral('-')
 436                     .appendValue(DAY_OF_WEEK).toFormatter();
 437             String str = date.getYear() + "-" + date.getMonthValue() + "-" +
 438                     date.get(woyField) + "-" + date.get(DAY_OF_WEEK);
 439             LocalDate parsed = LocalDate.parse(str, f);
 440             assertEquals(parsed, date, " :: " + str + " " + i);
 441 
 442             date = date.plusDays(1);
 443         }
 444     }
 445 
 446     @Test(dataProvider="weekFields")
 447     public void test_parse_resolve_localizedWoyDow(DayOfWeek firstDayOfWeek, int minDays) {
 448         LocalDate date = LocalDate.of(2012, 12, 15);
 449         WeekFields week = WeekFields.of(firstDayOfWeek, minDays);
 450         TemporalField dowField = week.dayOfWeek();
 451         TemporalField woyField = week.weekOfYear();
 452 
 453         for (int i = 1; i <= 60; i++) {
 454             // Test that with dayOfWeek and Week of month it computes the date
 455             DateTimeFormatter f = new DateTimeFormatterBuilder()
 456                     .appendValue(YEAR).appendLiteral('-')
 457                     .appendValue(MONTH_OF_YEAR).appendLiteral('-')
 458                     .appendValue(woyField).appendLiteral('-')
 459                     .appendValue(dowField).toFormatter();
 460             String str = date.getYear() + "-" + date.getMonthValue() + "-" +
 461                     date.get(woyField) + "-" + date.get(dowField);
 462             LocalDate parsed = LocalDate.parse(str, f);
 463             assertEquals(parsed, date, " :: " + str + " " + i);
 464 
 465             date = date.plusDays(1);
 466         }
 467     }
 468 
 469     @Test(dataProvider="weekFields")
 470     public void test_parse_resolve_localizedWoWBY(DayOfWeek firstDayOfWeek, int minDays) {
 471         LocalDate date = LocalDate.of(2012, 12, 31);
 472         WeekFields week = WeekFields.of(firstDayOfWeek, minDays);
 473         TemporalField dowField = week.dayOfWeek();
 474         TemporalField wowbyField = week.weekOfWeekBasedYear();
 475         TemporalField yowbyField = week.weekBasedYear();
 476 
 477         for (int i = 1; i <= 60; i++) {
 478             // Test that with dayOfWeek, week of year and year of week-based-year it computes the date
 479             DateTimeFormatter f = new DateTimeFormatterBuilder()
 480                     .appendValue(yowbyField).appendLiteral('-')
 481                     .appendValue(wowbyField).appendLiteral('-')
 482                     .appendValue(dowField).toFormatter();
 483             String str = date.get(yowbyField) + "-" + date.get(wowbyField) + "-" +
 484                     date.get(dowField);
 485             LocalDate parsed = LocalDate.parse(str, f);
 486             assertEquals(parsed, date, " :: " + str + " " + i);
 487 
 488             date = date.plusDays(1);
 489         }
 490     }
 491 
 492     //-----------------------------------------------------------------------
 493     @Test(dataProvider="weekFields")
 494     public void test_serializable_singleton(DayOfWeek firstDayOfWeek, int minDays) throws IOException, ClassNotFoundException {
 495         WeekFields weekDef = WeekFields.of(firstDayOfWeek, minDays);
 496         assertSerializableSame(weekDef);  // spec state singleton
 497     }
 498 
 499     //-----------------------------------------------------------------------
 500     @DataProvider(name="weekFields")
 501     Object[][] data_weekFields() {
 502         Object[][] objects = new Object[49][];
 503         int i = 0;
 504         for (DayOfWeek firstDayOfWeek : DayOfWeek.values()) {
 505             for (int minDays = 1; minDays <= 7; minDays++) {
 506                 objects[i++] = new Object[] {firstDayOfWeek, minDays};
 507             }
 508         }
 509         return objects;
 510     }
 511 
 512     //-----------------------------------------------------------------------
 513     @DataProvider(name="WeekBasedYearData")
 514     Object[][] provider_WeekBasedYearData() {
 515         return new Object[][] {
 516             {WeekFields.of(DayOfWeek.SUNDAY, 1),  2008, 52, 7, LocalDate.of(2008, 12, 27)},
 517             {WeekFields.of(DayOfWeek.SUNDAY, 1),  2009,  1, 1, LocalDate.of(2008, 12, 28)},
 518             {WeekFields.of(DayOfWeek.SUNDAY, 1),  2009,  1, 2, LocalDate.of(2008, 12, 29)},
 519             {WeekFields.of(DayOfWeek.SUNDAY, 1),  2009,  1, 3, LocalDate.of(2008, 12, 30)},
 520             {WeekFields.of(DayOfWeek.SUNDAY, 1),  2009,  1, 4, LocalDate.of(2008, 12, 31)},
 521             {WeekFields.of(DayOfWeek.SUNDAY, 1),  2009,  1, 5, LocalDate.of(2009, 1, 1)},
 522             {WeekFields.of(DayOfWeek.SUNDAY, 1),  2009,  2, 1, LocalDate.of(2009, 1, 4)},
 523             {WeekFields.of(DayOfWeek.SUNDAY, 1),  2009,  2, 2, LocalDate.of(2009, 1, 5)},
 524             {WeekFields.of(DayOfWeek.SUNDAY, 1),  2009,  2, 3, LocalDate.of(2009, 1, 6)},
 525        };
 526     }
 527 
 528     @Test(dataProvider="WeekBasedYearData")
 529     public void test_weekBasedYears(WeekFields weekDef, int weekBasedYear,
 530             int weekOfWeekBasedYear, int dayOfWeek, LocalDate date) {
 531         TemporalField dowField = weekDef.dayOfWeek();
 532         TemporalField wowbyField = weekDef.weekOfWeekBasedYear();
 533         TemporalField yowbyField = weekDef.weekBasedYear();
 534         assertEquals(date.get(dowField), dayOfWeek, "DayOfWeek mismatch");
 535         assertEquals(date.get(wowbyField), weekOfWeekBasedYear, "Week of WeekBasedYear mismatch");
 536         assertEquals(date.get(yowbyField), weekBasedYear, "Year of WeekBasedYear mismatch");
 537     }
 538 
 539 
 540     //-----------------------------------------------------------------------
 541     @DataProvider(name="IsoWeekData")
 542     Object[][] data_week() {
 543         return new Object[][] {
 544                 {LocalDate.of(1969, 12, 29), DayOfWeek.MONDAY, 1, 1970},
 545                 {LocalDate.of(2012, 12, 23), DayOfWeek.SUNDAY, 51, 2012},
 546                 {LocalDate.of(2012, 12, 24), DayOfWeek.MONDAY, 52, 2012},
 547                 {LocalDate.of(2012, 12, 27), DayOfWeek.THURSDAY, 52, 2012},
 548                 {LocalDate.of(2012, 12, 28), DayOfWeek.FRIDAY, 52, 2012},
 549                 {LocalDate.of(2012, 12, 29), DayOfWeek.SATURDAY, 52, 2012},
 550                 {LocalDate.of(2012, 12, 30), DayOfWeek.SUNDAY, 52, 2012},
 551                 {LocalDate.of(2012, 12, 31), DayOfWeek.MONDAY, 1, 2013},
 552                 {LocalDate.of(2013, 1, 1), DayOfWeek.TUESDAY, 1, 2013},
 553                 {LocalDate.of(2013, 1, 2), DayOfWeek.WEDNESDAY, 1, 2013},
 554                 {LocalDate.of(2013, 1, 6), DayOfWeek.SUNDAY, 1, 2013},
 555                 {LocalDate.of(2013, 1, 7), DayOfWeek.MONDAY, 2, 2013},
 556         };
 557     }
 558 
 559     //-----------------------------------------------------------------------
 560     // WEEK_OF_WEEK_BASED_YEAR
 561     // Validate with the same data used by IsoFields.
 562     //-----------------------------------------------------------------------
 563     @Test(dataProvider="IsoWeekData")
 564     public void test_WOWBY(LocalDate date, DayOfWeek dow, int week, int wby) {
 565         WeekFields weekDef = WeekFields.ISO;
 566         TemporalField dowField = weekDef.dayOfWeek();
 567         TemporalField wowbyField = weekDef.weekOfWeekBasedYear();
 568         TemporalField yowbyField = weekDef.weekBasedYear();
 569 
 570         assertEquals(date.get(dowField), dow.getValue());
 571         assertEquals(date.get(wowbyField), week);
 572         assertEquals(date.get(yowbyField), wby);
 573     }
 574 
 575 }