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Java > Open Source Codes > org > columba > ristretto > message > io > AsyncSourceInputStreamTest


1 /* ***** BEGIN LICENSE BLOCK *****
2  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
3  *
4  * The contents of this file are subject to the Mozilla Public License Version
5  * 1.1 (the "License"); you may not use this file except in compliance with
6  * the License. You may obtain a copy of the License at
7  * http://www.mozilla.org/MPL/
8  *
9  * Software distributed under the License is distributed on an "AS IS" basis,
10  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
11  * for the specific language governing rights and limitations under the
12  * License.
13  *
14  * The Original Code is Ristretto Mail API.
15  *
16  * The Initial Developers of the Original Code are
17  * Timo Stich and Frederik Dietz.
18  * Portions created by the Initial Developers are Copyright (C) 2004
19  * All Rights Reserved.
20  *
21  * Contributor(s):
22  *
23  * Alternatively, the contents of this file may be used under the terms of
24  * either the GNU General Public License Version 2 or later (the "GPL"), or
25  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
26  * in which case the provisions of the GPL or the LGPL are applicable instead
27  * of those above. If you wish to allow use of your version of this file only
28  * under the terms of either the GPL or the LGPL, and not to allow others to
29  * use your version of this file under the terms of the MPL, indicate your
30  * decision by deleting the provisions above and replace them with the notice
31  * and other provisions required by the GPL or the LGPL. If you do not delete
32  * the provisions above, a recipient may use your version of this file under
33  * the terms of any one of the MPL, the GPL or the LGPL.
34  *
35  * ***** END LICENSE BLOCK ***** */
36 package org.columba.ristretto.message.io;
37
38 import java.io.ByteArrayInputStream JavaDoc;
39 import java.io.IOException JavaDoc;
40 import java.util.Random JavaDoc;
41
42 import org.columba.ristretto.io.AsyncInputStream;
43
44 import junit.framework.TestCase;
45
46 public class AsyncSourceInputStreamTest extends TestCase {
47
48     byte[] test = new byte[1000];
49
50     
51     public void test1() throws IOException JavaDoc {
52         AsyncInputStream in = new AsyncInputStream(new ByteArrayInputStream JavaDoc(test), test.length);
53         
54         long time = System.currentTimeMillis();
55         
56         // increases the source by 100 every 100ms
57 new Thread JavaDoc(new TestWriter(in, 1000)).start();
58         
59         for( int i=0; i<1000; i++) {
60             // this will eventually block
61 assertEquals(test[i], (byte) in.read());
62         }
63         
64         // blocking worked if it took us more than 1 sec
65 assertTrue( System.currentTimeMillis() - time > 1000);
66     }
67     /**
68      * @see junit.framework.TestCase#setUp()
69      */
70     protected void setUp() throws Exception JavaDoc {
71         Random JavaDoc r = new Random JavaDoc();
72         r.nextBytes(test);
73     }
74 }
75
76
77 class TestWriter implements Runnable JavaDoc {
78     
79     private AsyncInputStream in;
80     private int size;
81     private int pos;
82     
83     /**
84      * @see java.lang.Runnable#run()
85      */
86     public void run() {
87         try {
88             while( pos < size ) {
89                 Thread.sleep(100);
90                 in.grow(100);
91                 pos += 10;
92             }
93         } catch (InterruptedException JavaDoc e) {
94             e.printStackTrace();
95         }
96     }
97     /**
98      * Constructs the AsyncSourceInputStreamTest.java.
99      *
100      * @param in
101      */
102     public TestWriter(AsyncInputStream in, int size) {
103         super();
104         this.in = in;
105         this.size = size;
106     }
107 }
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