KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > org > archive > io > BufferedSeekInputStreamTest


1 /* BufferedSeekInputStreamTest
2 *
3 * Created on September 18, 2006
4 *
5 * Copyright (C) 2006 Internet Archive.
6 *
7 * This file is part of the Heritrix web crawler (crawler.archive.org).
8 *
9 * Heritrix is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU Lesser Public License as published by
11 * the Free Software Foundation; either version 2.1 of the License, or
12 * any later version.
13 *
14 * Heritrix is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU Lesser Public License for more details.
18 *
19 * You should have received a copy of the GNU Lesser Public License
20 * along with Heritrix; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 */
23 package org.archive.io;
24
25 import java.util.Random JavaDoc;
26
27 import junit.framework.TestCase;
28
29
30 /**
31  * Unit test for BufferedSeekInputStream. The tests do some random
32  * repositioning in the stream to make sure the buffer is always valid.
33  *
34  * @author pjack
35  */
36 public class BufferedSeekInputStreamTest extends TestCase {
37
38     
39     private static byte[] TEST_DATA = makeTestData();
40     
41     public void testPosition() throws Exception JavaDoc {
42         Random JavaDoc random = new Random JavaDoc();
43         ArraySeekInputStream asis = new ArraySeekInputStream(TEST_DATA);
44         BufferedSeekInputStream bsis = new BufferedSeekInputStream(asis, 11);
45         for (int i = 0; i < TEST_DATA.length; i++) {
46             byte b = (byte)bsis.read();
47             assertEquals(TEST_DATA[i], b);
48         }
49         for (int i = 0; i < 1000; i++) {
50             int index = random.nextInt(TEST_DATA.length);
51             bsis.position(index);
52             char expected = (char)((int)TEST_DATA[index] & 0xFF);
53             char read = (char)(bsis.read() & 0xFF);
54             assertEquals(expected, read);
55         }
56     }
57     
58     
59     private static byte[] makeTestData() {
60         String JavaDoc s = "If the dull substance of my flesh were thought\n"
61          + "Injurious distance could not stop my way\n"
62          + "For then, despite of space, I would be brought\n"
63          + "From limits far remote where thou dost stay.\n";
64         byte[] r = new byte[s.length()];
65         for (int i = 0; i < r.length; i++) {
66             r[i] = (byte)s.charAt(i);
67 // r[i] = (byte)s.charAt(i);
68 }
69         return r;
70     }
71 }
72
Popular Tags