1 |
/* |
2 |
* Copyright 2005 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
20 |
* CA 95054 USA or visit www.sun.com if you need additional information or |
21 |
* have any questions. |
22 |
*/ |
23 |
|
24 |
/* |
25 |
* @test |
26 |
* @bug 4261170 |
27 |
* @summary Tests for Random.nextBytes |
28 |
* @author Martin Buchholz |
29 |
*/ |
30 |
|
31 |
import java.util.*; |
32 |
|
33 |
public class NextBytes { |
34 |
private static void realMain(String[] args) throws Throwable { |
35 |
byte[] expected = new byte[] |
36 |
{27, -105, -24, 83, -77, -29, 119, -74, -106, 68, 54}; |
37 |
Random r = new java.util.Random(2398579034L); |
38 |
for (int i = 0; i <= expected.length; i++) { |
39 |
r.setSeed(2398579034L); |
40 |
byte[] actual = new byte[i]; |
41 |
r.nextBytes(actual); |
42 |
//System.out.println(Arrays.toString(actual)); |
43 |
check(Arrays.equals(actual, Arrays.copyOf(expected,i))); |
44 |
} |
45 |
} |
46 |
|
47 |
//--------------------- Infrastructure --------------------------- |
48 |
static volatile int passed = 0, failed = 0; |
49 |
static void pass() {passed++;} |
50 |
static void fail() {failed++; Thread.dumpStack();} |
51 |
static void fail(String msg) {System.out.println(msg); fail();} |
52 |
static void unexpected(Throwable t) {failed++; t.printStackTrace();} |
53 |
static void check(boolean cond) {if (cond) pass(); else fail();} |
54 |
static void equal(Object x, Object y) { |
55 |
if (x == null ? y == null : x.equals(y)) pass(); |
56 |
else fail(x + " not equal to " + y);} |
57 |
public static void main(String[] args) throws Throwable { |
58 |
try {realMain(args);} catch (Throwable t) {unexpected(t);} |
59 |
System.out.printf("%nPassed = %d, failed = %d%n%n", passed, failed); |
60 |
if (failed > 0) throw new AssertionError("Some tests failed");} |
61 |
} |