1 /*

     2  * Copyright (c) 2005, 2006, 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 /* @test

    25  * @bug 5057341 6363898

    26  * @summary Basic tests for TimeUnit

    27  * @author Martin Buchholz

    28  */

    29 

    30 import static java.util.concurrent.TimeUnit.DAYS;

    31 import static java.util.concurrent.TimeUnit.HOURS;

    32 import static java.util.concurrent.TimeUnit.MICROSECONDS;

    33 import static java.util.concurrent.TimeUnit.MILLISECONDS;

    34 import static java.util.concurrent.TimeUnit.MINUTES;

    35 import static java.util.concurrent.TimeUnit.NANOSECONDS;

    36 import static java.util.concurrent.TimeUnit.SECONDS;

    37 

    38 import java.io.ByteArrayInputStream;

    39 import java.io.ByteArrayOutputStream;

    40 import java.io.IOException;

    41 import java.io.InputStream;

    42 import java.io.ObjectOutputStream;

    43 import java.io.ObjectInputStream;

    44 import java.util.Arrays;

    45 import java.util.concurrent.TimeUnit;

    46 

    47 public class Basic {

    48     private static void realMain(String[] args) throws Throwable {

    49 

    50         for (TimeUnit u : TimeUnit.values()) {

    51             System.out.println(u);

    52             check(u instanceof TimeUnit);

    53             equal(42L, u.convert(42, u));

    54             for (TimeUnit v : TimeUnit.values())

    55                 if (u.convert(42, v) >= 42)

    56                     equal(42L, v.convert(u.convert(42, v), u));

    57             check(readObject(serializedForm(u)) == u);

    58         }

    59 

    60         equal(  24L, HOURS.convert       (1, DAYS));

    61         equal(  60L, MINUTES.convert     (1, HOURS));

    62         equal(  60L, SECONDS.convert     (1, MINUTES));

    63         equal(1000L, MILLISECONDS.convert(1, SECONDS));

    64         equal(1000L, MICROSECONDS.convert(1, MILLISECONDS));

    65         equal(1000L, NANOSECONDS.convert (1, MICROSECONDS));

    66 

    67         equal(  24L, DAYS.toHours(1));

    68         equal(  60L, HOURS.toMinutes(1));

    69         equal(  60L, MINUTES.toSeconds(1));

    70         equal(1000L, SECONDS.toMillis(1));

    71         equal(1000L, MILLISECONDS.toMicros(1));

    72         equal(1000L, MICROSECONDS.toNanos(1));

    73 

    74         long t0 = System.nanoTime();

    75         MILLISECONDS.sleep(3); /* See windows bug 6313903, might not sleep */

    76         long elapsedMillis = (System.nanoTime() - t0)/(1000L * 1000L);

    77         System.out.printf("elapsed=%d%n", elapsedMillis);

    78         check(elapsedMillis >= 0);

    79         /* Might not sleep on windows: check(elapsedMillis >= 3); */

    80         check(elapsedMillis < 1000);

    81 

    82         //----------------------------------------------------------------

    83         // Tests for serialized form compatibility with previous release

    84         //----------------------------------------------------------------

    85         byte[] serializedForm = /* Generated using tiger */

    86             {-84, -19, 0, 5, '~', 'r', 0, 29, 'j', 'a', 'v', 'a', '.',

    87              'u', 't', 'i', 'l', '.', 'c', 'o', 'n', 'c', 'u', 'r', 'r', 'e',

    88              'n', 't', '.', 'T', 'i', 'm', 'e', 'U', 'n', 'i', 't', 0, 0,

    89              0, 0, 0, 0, 0, 0, 18, 0, 0, 'x', 'r', 0, 14,

    90              'j', 'a', 'v', 'a', '.', 'l', 'a', 'n', 'g', '.', 'E', 'n', 'u',

    91              'm', 0, 0, 0, 0, 0, 0, 0, 0, 18, 0, 0, 'x',

    92              'p', 't', 0, 7, 'S', 'E', 'C', 'O', 'N', 'D', 'S', };

    93         check(Arrays.equals(serializedForm(SECONDS), serializedForm));

    94     }

    95 

    96     //--------------------- Infrastructure ---------------------------

    97     static volatile int passed = 0, failed = 0;

    98     static void pass() {passed++;}

    99     static void fail() {failed++; Thread.dumpStack();}

   100     static void fail(String msg) {System.out.println(msg); fail();}

   101     static void unexpected(Throwable t) {failed++; t.printStackTrace();}

   102     static void check(boolean cond) {if (cond) pass(); else fail();}

   103     static void equal(Object x, Object y) {

   104         if (x == null ? y == null : x.equals(y)) pass();

   105         else fail(x + " not equal to " + y);}

   106     public static void main(String[] args) throws Throwable {

   107         try {realMain(args);} catch (Throwable t) {unexpected(t);}

   108         System.out.printf("%nPassed = %d, failed = %d%n%n", passed, failed);

   109         if (failed > 0) throw new AssertionError("Some tests failed");}

   110     static byte[] serializedForm(Object obj) throws IOException {

   111         ByteArrayOutputStream baos = new ByteArrayOutputStream();

   112         new ObjectOutputStream(baos).writeObject(obj);

   113         return baos.toByteArray();

   114     }

   115     static Object readObject(byte[] bytes)

   116         throws IOException, ClassNotFoundException {

   117         InputStream is = new ByteArrayInputStream(bytes);

   118         return new ObjectInputStream(is).readObject();

   119     }

   120 }