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.
   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  * 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 tck.java.time;
  61 
  62 import static org.testng.Assert.assertEquals;
  63 import static org.testng.Assert.fail;
  64 
  65 import java.io.IOException;
  66 import java.time.Clock;
  67 import java.time.Instant;
  68 import java.time.ZoneId;
  69 import java.time.ZoneOffset;
  70 
  71 import org.testng.annotations.Test;
  72 
  73 /**
  74  * Test system clock.
  75  */
  76 @Test
  77 public class TCKClock_System extends AbstractTCKTest {
  78 
  79     private static final ZoneId MOSCOW = ZoneId.of("Europe/Moscow");
  80     private static final ZoneId PARIS = ZoneId.of("Europe/Paris");
  81 
  82     //-----------------------------------------------------------------------
  83     public void test_isSerializable() throws IOException, ClassNotFoundException {
  84         assertSerializable(Clock.systemUTC());
  85         assertSerializable(Clock.systemDefaultZone());
  86         assertSerializable(Clock.system(PARIS));
  87     }
  88 
  89     //-----------------------------------------------------------------------
  90     public void test_instant() {
  91         Clock system = Clock.systemUTC();
  92         assertEquals(system.getZone(), ZoneOffset.UTC);
  93         for (int i = 0; i < 10000; i++) {
  94             // assume can eventually get these within 10 milliseconds
  95             Instant instant = system.instant();
  96             long systemMillis = System.currentTimeMillis();
  97             if (systemMillis - instant.toEpochMilli() < 10) {
  98                 return;  // success
  99             }
 100         }
 101         fail();
 102     }
 103 
 104     public void test_millis() {
 105         Clock system = Clock.systemUTC();
 106         assertEquals(system.getZone(), ZoneOffset.UTC);
 107         for (int i = 0; i < 10000; i++) {
 108             // assume can eventually get these within 10 milliseconds
 109             long instant = system.millis();
 110             long systemMillis = System.currentTimeMillis();
 111             if (systemMillis - instant < 10) {
 112                 return;  // success
 113             }
 114         }
 115         fail();
 116     }
 117 
 118     //-------------------------------------------------------------------------
 119     public void test_systemUTC() {
 120         Clock test = Clock.systemUTC();
 121         assertEquals(test.getZone(), ZoneOffset.UTC);
 122         assertEquals(test, Clock.system(ZoneOffset.UTC));
 123     }
 124 
 125     public void test_systemDefaultZone() {
 126         Clock test = Clock.systemDefaultZone();
 127         assertEquals(test.getZone(), ZoneId.systemDefault());
 128         assertEquals(test, Clock.system(ZoneId.systemDefault()));
 129     }
 130 
 131     public void test_system_ZoneId() {
 132         Clock test = Clock.system(PARIS);
 133         assertEquals(test.getZone(), PARIS);
 134     }
 135 
 136     @Test(expectedExceptions = NullPointerException.class)
 137     public void test_zoneId_nullZoneId() {
 138         Clock.system(null);
 139     }
 140 
 141     //-------------------------------------------------------------------------
 142     public void test_withZone() {
 143         Clock test = Clock.system(PARIS);
 144         Clock changed = test.withZone(MOSCOW);
 145         assertEquals(test.getZone(), PARIS);
 146         assertEquals(changed.getZone(), MOSCOW);
 147     }
 148 
 149     public void test_withZone_equal() {
 150         Clock test = Clock.system(PARIS);
 151         Clock changed = test.withZone(PARIS);
 152         assertEquals(changed.getZone(), PARIS);
 153     }
 154 
 155     public void test_withZone_fromUTC() {
 156         Clock test = Clock.systemUTC();
 157         Clock changed = test.withZone(PARIS);
 158         assertEquals(changed.getZone(), PARIS);
 159     }
 160 
 161     @Test(expectedExceptions = NullPointerException.class)
 162     public void test_withZone_null() {
 163         Clock.systemUTC().withZone(null);
 164     }
 165 
 166     //-----------------------------------------------------------------------
 167     public void test_equals() {
 168         Clock a = Clock.systemUTC();
 169         Clock b = Clock.systemUTC();
 170         assertEquals(a.equals(a), true);
 171         assertEquals(a.equals(b), true);
 172         assertEquals(b.equals(a), true);
 173         assertEquals(b.equals(b), true);
 174 
 175         Clock c = Clock.system(PARIS);
 176         Clock d = Clock.system(PARIS);
 177         assertEquals(c.equals(c), true);
 178         assertEquals(c.equals(d), true);
 179         assertEquals(d.equals(c), true);
 180         assertEquals(d.equals(d), true);
 181 
 182         assertEquals(a.equals(c), false);
 183         assertEquals(c.equals(a), false);
 184 
 185         assertEquals(a.equals(null), false);
 186         assertEquals(a.equals("other type"), false);
 187         assertEquals(a.equals(Clock.fixed(Instant.now(), ZoneOffset.UTC)), false);
 188     }
 189 
 190     public void test_hashCode() {
 191         Clock a = Clock.system(ZoneOffset.UTC);
 192         Clock b = Clock.system(ZoneOffset.UTC);
 193         assertEquals(a.hashCode(), a.hashCode());
 194         assertEquals(a.hashCode(), b.hashCode());
 195 
 196         Clock c = Clock.system(PARIS);
 197         assertEquals(a.hashCode() == c.hashCode(), false);
 198     }
 199 
 200 }