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Open source (GPL) Java utilities maintained by Stephen Ostermiller with help from many contributors.
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/*
* Regression tests for Circular Buffers.
* Copyright (C) 2002 Stephen Ostermiller
* http://ostermiller.org/contact.pl?regarding=Java+Utilities
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* See COPYING.TXT for details.
*/
package com.Ostermiller.util;
import java.io.*;
import java.util.Random;
/**
* Regression test for circular buffers. When run, this program
* should output the Gettysburg Address and quite a few digits of
* pi.
* More information about this class is available from ostermiller.org.
*
* @author Stephen Ostermiller http://ostermiller.org/contact.pl?regarding=Java+Utilities
* @since ostermillerutils 1.00.00
*/
class CircularBufferTests {
private byte[] pi = {
3,
1,4,1,5,9,2,6,5,3,5,8,9,7,9,3,2,3,8,4,6,2,6,4,3,3,8,3,2,7,9,5,0,2,8,8,4,1,9,7,1,6,9,3,9,9,3,7,5,1,0,5,8,2,0,9,7,4,9,4,4,
5,9,2,3,0,7,8,1,6,4,0,6,2,8,6,2,0,8,9,9,8,6,2,8,0,3,4,8,2,5,3,4,2,1,1,7,0,6,7,9,8,2,1,4,8,0,8,6,5,1,3,2,8,2,3,0,6,6,4,7,
0,9,3,8,4,4,6,0,9,5,5,0,5,8,2,2,3,1,7,2,5,3,5,9,4,0,8,1,2,8,4,8,1,1,1,7,4,5,0,2,8,4,1,0,2,7,0,1,9,3,8,5,2,1,1,0,5,5,5,9,
6,4,4,6,2,2,9,4,8,9,5,4,9,3,0,3,8,1,9,6,4,4,2,8,8,1,0,9,7,5,6,6,5,9,3,3,4,4,6,1,2,8,4,7,5,6,4,8,2,3,3,7,8,6,7,8,3,1,6,5,
2,7,1,2,0,1,9,0,9,1,4,5,6,4,8,5,6,6,9,2,3,4,6,0,3,4,8,6,1,0,4,5,4,3,2,6,6,4,8,2,1,3,3,9,3,6,0,7,2,6,0,2,4,9,1,4,1,2,7,3,
7,2,4,5,8,7,0,0,6,6,0,6,3,1,5,5,8,8,1,7,4,8,8,1,5,2,0,9,2,0,9,6,2,8,2,9,2,5,4,0,9,1,7,1,5,3,6,4,3,6,7,8,9,2,5,9,0,3,6,0,
0,1,1,3,3,0,5,3,0,5,4,8,8,2,0,4,6,6,5,2,1,3,8,4,1,4,6,9,5,1,9,4,1,5,1,1,6,0,9,4,3,3,0,5,7,2,7,0,3,6,5,7,5,9,5,9,1,9,5,3,
0,9,2,1,8,6,1,1,7,3,8,1,9,3,2,6,1,1,7,9,3,1,0,5,1,1,8,5,4,8,0,7,4,4,6,2,3,7,9,9,6,2,7,4,9,5,6,7,3,5,1,8,8,5,7,5,2,7,2,4,
8,9,1,2,2,7,9,3,8,1,8,3,0,1,1,9,4,9,1,2,9,8,3,3,6,7,3,3,6,2,4,4,0,6,5,6,6,4,3,0,8,6,0,2,1,3,9,4,9,4,6,3,9,5,2,2,4,7,3,7,
1,9,0,7,0,2,1,7,9,8,6,0,9,4,3,7,0,2,7,7,0,5,3,9,2,1,7,1,7,6,2,9,3,1,7,6,7,5,2,3,8,4,6,7,4,8,1,8,4,6,7,6,6,9,4,0,5,1,3,2,
0,0,0,5,6,8,1,2,7,1,4,5,2,6,3,5,6,0,8,2,7,7,8,5,7,7,1,3,4,2,7,5,7,7,8,9,6,0,9,1,7,3,6,3,7,1,7,8,7,2,1,4,6,8,4,4,0,9,0,1,
2,2,4,9,5,3,4,3,0,1,4,6,5,4,9,5,8,5,3,7,1,0,5,0,7,9,2,2,7,9,6,8,9,2,5,8,9,2,3,5,4,2,0,1,9,9,5,6,1,1,2,1,2,9,0,2,1,9,6,0,
8,6,4,0,3,4,4,1,8,1,5,9,8,1,3,6,2,9,7,7,4,7,7,1,3,0,9,9,6,0,5,1,8,7,0,7,2,1,1,3,4,9,9,9,9,9,9,8,3,7,2,9,7,8,0,4,9,9,5,1,
};
private String theGettysburgAddress = "Four score and seven years ago our fathers brought forth, " +
"upon this continent, a new nation, conceived in Liberty, and dedicated " +
"to the proposition that all men are created equal.\n" +
"Now we are engaged in a great civil war, testing whether that nation, " +
"or any nation so conceived, and so dedicated, can long endure. We are " +
"met here on a great battlefield of that war. We have come to dedicate " +
"a portion of it as a final resting place for those who here gave their " +
"lives that that nation might live. It is altogether fitting and proper " +
"that we should do this.\n" +
"But in a larger sense we can not dedicate -- we can not consecrate -- " +
"we can not hallow this ground. The brave men, living and dead, who " +
"struggled, here, have consecrated it far above our poor power to add " +
"or detract. The world will little note, nor long remember, what we say here, " +
"but can never forget what they did here. It is for us, the living, rather " +
"to be dedicated here to the unfinished work which they have, thus far, so " +
"nobly carried on. It is rather for us to be here dedicated to the great task " +
"remaining before us -- that from these honored dead we take increased devotion " +
"to that cause for which they here gave the last full measure of devotion -- " +
"that we here highly resolve that these dead shall not have died in vain; that " +
"this nation shall have a new birth of freedom; and that this government of the " +
"people, by the people, for the people, shall not perish from the earth.";
private StringWriter tgbaWriter = new StringWriter();
private StringWriter tgbaWriter2 = new StringWriter();
private ByteArrayOutputStream piOutputStream = new ByteArrayOutputStream();
private Random rand = new Random();
private CircularCharBuffer ccb = new CircularCharBuffer(20);
private Reader ccbin;
private Writer ccbout;
private CircularByteBuffer cbb = new CircularByteBuffer(20);
private InputStream cbbin;
private OutputStream cbbout;
private CircularObjectBuffer cob = new CircularObjectBuffer(20);
/**
* Main test method
* @param args command line arguments (ignored)
*/
public static void main(String args[]){
try {
new CircularBufferTests();
} catch (Exception x){
x.printStackTrace();
System.exit(1);
}
System.exit(0);
}
private CircularBufferTests() throws Exception{
ccbin = ccb.getReader();
ccbout = ccb.getWriter();
CCBProducer ccbp = new CCBProducer();
CCBConsumer ccbc = new CCBConsumer();
ccbc.start();
ccbp.start();
while (ccbc.isAlive() || ccbp.isAlive()){
if(System.in.available() > 0){
ccbc.interrupt();
ccbp.interrupt();
return;
}
}
String s1 = tgbaWriter.toString();
if (!theGettysburgAddress.equals(s1)){
throw new Exception(s1);
}
cbbin = cbb.getInputStream();
cbbout = cbb.getOutputStream();
CBBProducer cbbp = new CBBProducer();
CBBConsumer cbbc = new CBBConsumer();
cbbc.start();
cbbp.start();
while (cbbc.isAlive() || cbbp.isAlive()){
if(System.in.available() > 0){
cbbc.interrupt();
cbbp.interrupt();
return;
}
}
assertEqual(pi, piOutputStream.toByteArray());
COBProducer cobp = new COBProducer();
COBConsumer cobc = new COBConsumer();
cobc.start();
cobp.start();
while (cobc.isAlive() || cobp.isAlive()){
if(System.in.available() > 0){
cobc.interrupt();
cobp.interrupt();
return;
}
}
String s2 = tgbaWriter2.toString();
if (!theGettysburgAddress.equals(s2)){
throw new Exception(s2);
}
}
private static void assertEqual(byte[] b1, byte[] b2) throws Exception {
if (b1.length != b2.length) throw new Exception ("Length mismatch: " + b1.length + ", " + b2.length);
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