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 }