1/* 2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 3 * 4 * This code is free software; you can redistribute it and/or modify it 5 * under the terms of the GNU General Public License version 2 only, as 6 * published by the Free Software Foundation. 7 * 8 * This code is distributed in the hope that it will be useful, but WITHOUT 9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 11 * version 2 for more details (a copy is included in the LICENSE file that 12 * accompanied this code). 13 * 14 * You should have received a copy of the GNU General Public License version 15 * 2 along with this work; if not, write to the Free Software Foundation, 16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 17 * 18 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 19 * or visit www.oracle.com if you need additional information or have any 20 * questions. 21 */ 22 23/* 24 * This file is available under and governed by the GNU General Public 25 * License version 2 only, as published by the Free Software Foundation. 26 * However, the following notice accompanied the original version of this 27 * file: 28 * 29 * Written by Doug Lea and Martin Buchholz with assistance from 30 * members of JCP JSR-166 Expert Group and released to the public 31 * domain, as explained at 32 * http://creativecommons.org/publicdomain/zero/1.0/ 33 */ 34 35import static java.util.concurrent.TimeUnit.DAYS; 36import static java.util.concurrent.TimeUnit.HOURS; 37import static java.util.concurrent.TimeUnit.MICROSECONDS; 38import static java.util.concurrent.TimeUnit.MILLISECONDS; 39import static java.util.concurrent.TimeUnit.MINUTES; 40import static java.util.concurrent.TimeUnit.NANOSECONDS; 41import static java.util.concurrent.TimeUnit.SECONDS; 42 43import java.time.temporal.ChronoUnit; 44import java.util.concurrent.TimeUnit; 45 46import junit.framework.Test; 47import junit.framework.TestSuite; 48 49public class TimeUnit8Test extends JSR166TestCase { 50 public static void main(String[] args) { 51 main(suite(), args); 52 } 53 54 public static Test suite() { 55 return new TestSuite(TimeUnit8Test.class); 56 } 57 58 /** 59 * tests for toChronoUnit. 60 */ 61 public void testToChronoUnit() throws Exception { 62 assertSame(ChronoUnit.NANOS, NANOSECONDS.toChronoUnit()); 63 assertSame(ChronoUnit.MICROS, MICROSECONDS.toChronoUnit()); 64 assertSame(ChronoUnit.MILLIS, MILLISECONDS.toChronoUnit()); 65 assertSame(ChronoUnit.SECONDS, SECONDS.toChronoUnit()); 66 assertSame(ChronoUnit.MINUTES, MINUTES.toChronoUnit()); 67 assertSame(ChronoUnit.HOURS, HOURS.toChronoUnit()); 68 assertSame(ChronoUnit.DAYS, DAYS.toChronoUnit()); 69 70 // Every TimeUnit has a defined ChronoUnit equivalent 71 for (TimeUnit x : TimeUnit.values()) 72 assertSame(x, TimeUnit.of(x.toChronoUnit())); 73 } 74 75 /** 76 * tests for TimeUnit.of(ChronoUnit). 77 */ 78 public void testTimeUnitOf() throws Exception { 79 assertSame(NANOSECONDS, TimeUnit.of(ChronoUnit.NANOS)); 80 assertSame(MICROSECONDS, TimeUnit.of(ChronoUnit.MICROS)); 81 assertSame(MILLISECONDS, TimeUnit.of(ChronoUnit.MILLIS)); 82 assertSame(SECONDS, TimeUnit.of(ChronoUnit.SECONDS)); 83 assertSame(MINUTES, TimeUnit.of(ChronoUnit.MINUTES)); 84 assertSame(HOURS, TimeUnit.of(ChronoUnit.HOURS)); 85 assertSame(DAYS, TimeUnit.of(ChronoUnit.DAYS)); 86 87 assertThrows(NullPointerException.class, 88 () -> TimeUnit.of((ChronoUnit)null)); 89 90 // ChronoUnits either round trip to their TimeUnit 91 // equivalents, or throw IllegalArgumentException. 92 for (ChronoUnit cu : ChronoUnit.values()) { 93 final TimeUnit tu; 94 try { 95 tu = TimeUnit.of(cu); 96 } catch (IllegalArgumentException acceptable) { 97 continue; 98 } 99 assertSame(cu, tu.toChronoUnit()); 100 } 101 } 102 103} 104