1 /*
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   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.
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  23 
  24 /*
  25  * This file is available under and governed by the GNU General Public
  26  * License version 2 only, as published by the Free Software Foundation.
  27  * However, the following notice accompanied the original version of this
  28  * file:
  29  *
  30  * Copyright (c) 2008-2012, Stephen Colebourne & Michael Nascimento Santos
  31  *
  32  * All rights reserved.
  33  *
  34  * Redistribution and use in source and binary forms, with or without
  35  * modification, are permitted provided that the following conditions are met:
  36  *
  37  *  * Redistributions of source code must retain the above copyright notice,
  38  *    this list of conditions and the following disclaimer.
  39  *
  40  *  * Redistributions in binary form must reproduce the above copyright notice,
  41  *    this list of conditions and the following disclaimer in the documentation
  42  *    and/or other materials provided with the distribution.
  43  *
  44  *  * Neither the name of JSR-310 nor the names of its contributors
  45  *    may be used to endorse or promote products derived from this software
  46  *    without specific prior written permission.
  47  *
  48  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  49  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  50  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  51  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
  52  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  53  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  54  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  55  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  56  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  57  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  58  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  59  */
  60 package test.java.time;
  61 
  62 import static org.testng.Assert.assertEquals;
  63 
  64 import java.time.DateTimeException;
  65 import java.time.Instant;
  66 import java.time.LocalDate;
  67 import java.time.LocalTime;
  68 import java.time.Month;
  69 import java.time.OffsetDateTime;
  70 import java.time.Year;
  71 import java.time.ZoneOffset;
  72 
  73 import org.testng.annotations.Test;
  74 
  75 /**
  76  * Test OffsetDateTime creation.
  77  */
  78 @Test
  79 public class TestOffsetDateTime_instants {
  80 
  81     private static final ZoneOffset OFFSET_PONE = ZoneOffset.ofHours(1);
  82     private static final ZoneOffset OFFSET_MAX = ZoneOffset.ofHours(18);
  83     private static final ZoneOffset OFFSET_MIN = ZoneOffset.ofHours(-18);
  84 
  85     //-----------------------------------------------------------------------
  86     @Test(expectedExceptions=NullPointerException.class)
  87     public void factory_ofInstant_nullInstant() {
  88         OffsetDateTime.ofInstant((Instant) null, OFFSET_PONE);
  89     }
  90 
  91     @Test(expectedExceptions=NullPointerException.class)
  92     public void factory_ofInstant_nullOffset() {
  93         Instant instant = Instant.ofEpochSecond(0L);
  94         OffsetDateTime.ofInstant(instant, (ZoneOffset) null);
  95     }
  96 
  97     public void factory_ofInstant_allSecsInDay() {
  98         for (int i = 0; i < (24 * 60 * 60); i++) {
  99             Instant instant = Instant.ofEpochSecond(i);
 100             OffsetDateTime test = OffsetDateTime.ofInstant(instant, OFFSET_PONE);
 101             assertEquals(test.getYear(), 1970);
 102             assertEquals(test.getMonth(), Month.JANUARY);
 103             assertEquals(test.getDayOfMonth(), 1 + (i >= 23 * 60 * 60 ? 1 : 0));
 104             assertEquals(test.getHour(), ((i / (60 * 60)) + 1) % 24);
 105             assertEquals(test.getMinute(), (i / 60) % 60);
 106             assertEquals(test.getSecond(), i % 60);
 107         }
 108     }
 109 
 110     public void factory_ofInstant_allDaysInCycle() {
 111         // sanity check using different algorithm
 112         OffsetDateTime expected = OffsetDateTime.of(LocalDate.of(1970, 1, 1), LocalTime.of(0, 0, 0, 0), ZoneOffset.UTC);
 113         for (long i = 0; i < 146097; i++) {
 114             Instant instant = Instant.ofEpochSecond(i * 24L * 60L * 60L);
 115             OffsetDateTime test = OffsetDateTime.ofInstant(instant, ZoneOffset.UTC);
 116             assertEquals(test, expected);
 117             expected = expected.plusDays(1);
 118         }
 119     }
 120 
 121     public void factory_ofInstant_history() {
 122         doTest_factory_ofInstant_all(-2820, 2820);
 123     }
 124 
 125     //-----------------------------------------------------------------------
 126     public void factory_ofInstant_minYear() {
 127         doTest_factory_ofInstant_all(Year.MIN_VALUE, Year.MIN_VALUE + 420);
 128     }
 129 
 130     @Test(expectedExceptions=DateTimeException.class)
 131     public void factory_ofInstant_tooLow() {
 132         long days_0000_to_1970 = (146097 * 5) - (30 * 365 + 7);
 133         int year = Year.MIN_VALUE - 1;
 134         long days = (year * 365L + (year / 4 - year / 100 + year / 400)) - days_0000_to_1970;
 135         Instant instant = Instant.ofEpochSecond(days * 24L * 60L * 60L);
 136         OffsetDateTime.ofInstant(instant, ZoneOffset.UTC);
 137     }
 138 
 139     public void factory_ofInstant_maxYear() {
 140         doTest_factory_ofInstant_all(Year.MAX_VALUE - 420, Year.MAX_VALUE);
 141     }
 142 
 143     @Test(expectedExceptions=DateTimeException.class)
 144     public void factory_ofInstant_tooBig() {
 145         long days_0000_to_1970 = (146097 * 5) - (30 * 365 + 7);
 146         long year = Year.MAX_VALUE + 1L;
 147         long days = (year * 365L + (year / 4 - year / 100 + year / 400)) - days_0000_to_1970;
 148         Instant instant = Instant.ofEpochSecond(days * 24L * 60L * 60L);
 149         OffsetDateTime.ofInstant(instant, ZoneOffset.UTC);
 150     }
 151 
 152     //-----------------------------------------------------------------------
 153     public void factory_ofInstant_minWithMinOffset() {
 154         long days_0000_to_1970 = (146097 * 5) - (30 * 365 + 7);
 155         int year = Year.MIN_VALUE;
 156         long days = (year * 365L + (year / 4 - year / 100 + year / 400)) - days_0000_to_1970;
 157         Instant instant = Instant.ofEpochSecond(days * 24L * 60L * 60L - OFFSET_MIN.getTotalSeconds());
 158         OffsetDateTime test = OffsetDateTime.ofInstant(instant, OFFSET_MIN);
 159         assertEquals(test.getYear(), Year.MIN_VALUE);
 160         assertEquals(test.getMonth().getValue(), 1);
 161         assertEquals(test.getDayOfMonth(), 1);
 162         assertEquals(test.getOffset(), OFFSET_MIN);
 163         assertEquals(test.getHour(), 0);
 164         assertEquals(test.getMinute(), 0);
 165         assertEquals(test.getSecond(), 0);
 166         assertEquals(test.getNano(), 0);
 167     }
 168 
 169     public void factory_ofInstant_minWithMaxOffset() {
 170         long days_0000_to_1970 = (146097 * 5) - (30 * 365 + 7);
 171         int year = Year.MIN_VALUE;
 172         long days = (year * 365L + (year / 4 - year / 100 + year / 400)) - days_0000_to_1970;
 173         Instant instant = Instant.ofEpochSecond(days * 24L * 60L * 60L - OFFSET_MAX.getTotalSeconds());
 174         OffsetDateTime test = OffsetDateTime.ofInstant(instant, OFFSET_MAX);
 175         assertEquals(test.getYear(), Year.MIN_VALUE);
 176         assertEquals(test.getMonth().getValue(), 1);
 177         assertEquals(test.getDayOfMonth(), 1);
 178         assertEquals(test.getOffset(), OFFSET_MAX);
 179         assertEquals(test.getHour(), 0);
 180         assertEquals(test.getMinute(), 0);
 181         assertEquals(test.getSecond(), 0);
 182         assertEquals(test.getNano(), 0);
 183     }
 184 
 185     public void factory_ofInstant_maxWithMinOffset() {
 186         long days_0000_to_1970 = (146097 * 5) - (30 * 365 + 7);
 187         int year = Year.MAX_VALUE;
 188         long days = (year * 365L + (year / 4 - year / 100 + year / 400)) + 365 - days_0000_to_1970;
 189         Instant instant = Instant.ofEpochSecond((days + 1) * 24L * 60L * 60L - 1 - OFFSET_MIN.getTotalSeconds());
 190         OffsetDateTime test = OffsetDateTime.ofInstant(instant, OFFSET_MIN);
 191         assertEquals(test.getYear(), Year.MAX_VALUE);
 192         assertEquals(test.getMonth().getValue(), 12);
 193         assertEquals(test.getDayOfMonth(), 31);
 194         assertEquals(test.getOffset(), OFFSET_MIN);
 195         assertEquals(test.getHour(), 23);
 196         assertEquals(test.getMinute(), 59);
 197         assertEquals(test.getSecond(), 59);
 198         assertEquals(test.getNano(), 0);
 199     }
 200 
 201     public void factory_ofInstant_maxWithMaxOffset() {
 202         long days_0000_to_1970 = (146097 * 5) - (30 * 365 + 7);
 203         int year = Year.MAX_VALUE;
 204         long days = (year * 365L + (year / 4 - year / 100 + year / 400)) + 365 - days_0000_to_1970;
 205         Instant instant = Instant.ofEpochSecond((days + 1) * 24L * 60L * 60L - 1 - OFFSET_MAX.getTotalSeconds());
 206         OffsetDateTime test = OffsetDateTime.ofInstant(instant, OFFSET_MAX);
 207         assertEquals(test.getYear(), Year.MAX_VALUE);
 208         assertEquals(test.getMonth().getValue(), 12);
 209         assertEquals(test.getDayOfMonth(), 31);
 210         assertEquals(test.getOffset(), OFFSET_MAX);
 211         assertEquals(test.getHour(), 23);
 212         assertEquals(test.getMinute(), 59);
 213         assertEquals(test.getSecond(), 59);
 214         assertEquals(test.getNano(), 0);
 215     }
 216 
 217     //-----------------------------------------------------------------------
 218     @Test(expectedExceptions=DateTimeException.class)
 219     public void factory_ofInstant_maxInstantWithMaxOffset() {
 220         Instant instant = Instant.ofEpochSecond(Long.MAX_VALUE);
 221         OffsetDateTime.ofInstant(instant, OFFSET_MAX);
 222     }
 223 
 224     @Test(expectedExceptions=DateTimeException.class)
 225     public void factory_ofInstant_maxInstantWithMinOffset() {
 226         Instant instant = Instant.ofEpochSecond(Long.MAX_VALUE);
 227         OffsetDateTime.ofInstant(instant, OFFSET_MIN);
 228     }
 229 
 230     //-----------------------------------------------------------------------
 231     private void doTest_factory_ofInstant_all(long minYear, long maxYear) {
 232         long days_0000_to_1970 = (146097 * 5) - (30 * 365 + 7);
 233         int minOffset = (minYear <= 0 ? 0 : 3);
 234         int maxOffset = (maxYear <= 0 ? 0 : 3);
 235         long minDays = (minYear * 365L + ((minYear + minOffset) / 4L - (minYear + minOffset) / 100L + (minYear + minOffset) / 400L)) - days_0000_to_1970;
 236         long maxDays = (maxYear * 365L + ((maxYear + maxOffset) / 4L - (maxYear + maxOffset) / 100L + (maxYear + maxOffset) / 400L)) + 365L - days_0000_to_1970;
 237 
 238         final LocalDate maxDate = LocalDate.of(Year.MAX_VALUE, 12, 31);
 239         OffsetDateTime expected = OffsetDateTime.of(LocalDate.of((int) minYear, 1, 1), LocalTime.of(0, 0, 0, 0), ZoneOffset.UTC);
 240         for (long i = minDays; i < maxDays; i++) {
 241             Instant instant = Instant.ofEpochSecond(i * 24L * 60L * 60L);
 242             try {
 243                 OffsetDateTime test = OffsetDateTime.ofInstant(instant, ZoneOffset.UTC);
 244                 assertEquals(test, expected);
 245                 if (expected.toLocalDate().equals(maxDate) == false) {
 246                     expected = expected.plusDays(1);
 247                 }
 248             } catch (RuntimeException|Error ex) {
 249                 System.out.println("Error: " + i + " " + expected);
 250                 throw ex;
 251             }
 252         }
 253     }
 254 
 255     // for performance testing
 256     //    private void doTest_factory_ofInstant_all(int minYear, int maxYear) {
 257     //        long days_0000_to_1970 = (146097 * 5) - (30 * 365 + 7);
 258     //        int minOffset = (minYear <= 0 ? 0 : 3);
 259     //        int maxOffset = (maxYear <= 0 ? 0 : 3);
 260     //        long minDays = (long) (minYear * 365L + ((minYear + minOffset) / 4L - (minYear + minOffset) / 100L + (minYear + minOffset) / 400L)) - days_0000_to_1970;
 261     //        long maxDays = (long) (maxYear * 365L + ((maxYear + maxOffset) / 4L - (maxYear + maxOffset) / 100L + (maxYear + maxOffset) / 400L)) + 365L - days_0000_to_1970;
 262     //
 263     //        OffsetDateTime expected = OffsetDateTime.dateTime(minYear, 1, 1, 0, 0, 0, 0, ZoneOffset.UTC);
 264     //        Date cutover = new Date(Long.MIN_VALUE);
 265     //        GregorianCalendar cal = new GregorianCalendar(TimeZone.getTimeZone("UTC"));
 266     //        cal.setGregorianChange(cutover);
 267     //        for (long i = minDays; i < maxDays; i++) {
 268     //            Instant instant = Instant.instant(i * 24L * 60L * 60L);
 269     //            try {
 270     //                cal.setTimeInMillis(instant.getEpochSecond() * 1000L);
 271     //                assertEquals(cal.get(GregorianCalendar.MONTH), expected.getMonth().getValue() - 1);
 272     //                assertEquals(cal.get(GregorianCalendar.DAY_OF_MONTH), expected.getDayOfMonth().getValue());
 273     //                expected = expected.plusDays(1);
 274     //            } catch (RuntimeException ex) {
 275     //                System.out.println("Error: " + i + " " + expected);
 276     //                throw ex;
 277     //            } catch (Error ex) {
 278     //                System.out.println("Error: " + i + " " + expected);
 279     //                throw ex;
 280     //            }
 281     //        }
 282     //    }
 283 
 284     //-----------------------------------------------------------------------
 285     public void test_toInstant_19700101() {
 286         OffsetDateTime dt = OffsetDateTime.of(LocalDate.of(1970, 1, 1), LocalTime.of(0, 0, 0, 0), ZoneOffset.UTC);
 287         Instant test = dt.toInstant();
 288         assertEquals(test.getEpochSecond(), 0);
 289         assertEquals(test.getNano(), 0);
 290     }
 291 
 292     public void test_toInstant_19700101_oneNano() {
 293         OffsetDateTime dt = OffsetDateTime.of(LocalDate.of(1970, 1, 1), LocalTime.of(0, 0, 0, 1), ZoneOffset.UTC);
 294         Instant test = dt.toInstant();
 295         assertEquals(test.getEpochSecond(), 0);
 296         assertEquals(test.getNano(), 1);
 297     }
 298 
 299     public void test_toInstant_19700101_minusOneNano() {
 300         OffsetDateTime dt = OffsetDateTime.of(LocalDate.of(1969, 12, 31), LocalTime.of(23, 59, 59, 999999999), ZoneOffset.UTC);
 301         Instant test = dt.toInstant();
 302         assertEquals(test.getEpochSecond(), -1);
 303         assertEquals(test.getNano(), 999999999);
 304     }
 305 
 306     public void test_toInstant_19700102() {
 307         OffsetDateTime dt = OffsetDateTime.of(LocalDate.of(1970, 1, 2), LocalTime.of(0, 0, 0, 0), ZoneOffset.UTC);
 308         Instant test = dt.toInstant();
 309         assertEquals(test.getEpochSecond(), 24L * 60L * 60L);
 310         assertEquals(test.getNano(), 0);
 311     }
 312 
 313     public void test_toInstant_19691231() {
 314         OffsetDateTime dt = OffsetDateTime.of(LocalDate.of(1969, 12, 31), LocalTime.of(0, 0, 0, 0), ZoneOffset.UTC);
 315         Instant test = dt.toInstant();
 316         assertEquals(test.getEpochSecond(), -24L * 60L * 60L);
 317         assertEquals(test.getNano(), 0);
 318     }
 319 
 320     //-----------------------------------------------------------------------
 321     public void test_toEpochSecond_19700101() {
 322         OffsetDateTime dt = OffsetDateTime.of(LocalDate.of(1970, 1, 1), LocalTime.of(0, 0, 0, 0), ZoneOffset.UTC);
 323         assertEquals(dt.toEpochSecond(), 0);
 324     }
 325 
 326     public void test_toEpochSecond_19700101_oneNano() {
 327         OffsetDateTime dt = OffsetDateTime.of(LocalDate.of(1970, 1, 1), LocalTime.of( 0, 0, 0, 1), ZoneOffset.UTC);
 328         assertEquals(dt.toEpochSecond(), 0);
 329     }
 330 
 331     public void test_toEpochSecond_19700101_minusOneNano() {
 332         OffsetDateTime dt = OffsetDateTime.of(LocalDate.of(1969, 12, 31), LocalTime.of(23, 59, 59, 999999999), ZoneOffset.UTC);
 333         assertEquals(dt.toEpochSecond(), -1);
 334     }
 335 
 336     public void test_toEpochSecond_19700102() {
 337         OffsetDateTime dt = OffsetDateTime.of(LocalDate.of(1970, 1, 2), LocalTime.of(0, 0, 0, 0), ZoneOffset.UTC);
 338         assertEquals(dt.toEpochSecond(), 24L * 60L * 60L);
 339     }
 340 
 341     public void test_toEpochSecond_19691231() {
 342         OffsetDateTime dt = OffsetDateTime.of(LocalDate.of(1969, 12, 31), LocalTime.of(0, 0, 0, 0), ZoneOffset.UTC);
 343         assertEquals(dt.toEpochSecond(), -24L * 60L * 60L);
 344     }
 345 
 346 }