threadpooltest.java

java编写的OCR软件

package de.spieleck.util;

import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;

/**
 * Test the ThreadPool on slow processes.
 */
public class ThreadPoolTest
    extends TestCase
{
    private static int seed = 42;

    protected ThreadPool tp;
    protected TaskQueue tq;

    protected int count;
    protected long sum;

    public void setUp()
    {
        tq = new TaskQueue();
        tp = new ThreadPool(5, tq);
    }

    public void tearDown()
    {
        tq = null;
        tp = null;
    }

    /** large jobs: do it hundred times. */
    public void testCountSum10_100()
        throws Exception
    {
        testCountSum(10,100);
    }

    public void testCountSum100_100()
        throws Exception
    {
        testCountSum(100, 100);
    }

    public void testCountSum200_100()
        throws Exception
    {
        testCountSum(200, 100);
    }

    public void testCountSum400_100()
        throws Exception
    {
        testCountSum(400, 100);
    }

    public void testCountSum800_100()
        throws Exception
    {
        testCountSum(800, 100);
    }

    public void testCountSum100_200()
        throws Exception
    {
        testCountSum(100, 200);
    }

    public void testCountSum10_10()
        throws Exception
    {
        testCountSum(10,10);
    }

    public void testCountSum100_10()
        throws Exception
    {
        testCountSum(100, 10);
    }

    /** medium jobs: do it ten times. */
    public void testCountSum200_10()
        throws Exception
    {
        testCountSum(200, 10);
    }

    public void testCountSum400_10()
        throws Exception
    {
        testCountSum(400, 10);
    }

    public void testCountSum800_10()
        throws Exception
    {
        testCountSum(800, 10);
    }

    /** minijobs: do it once. */
    public void testCountSum10_1()
        throws Exception
    {
        testCountSum(10,1);
    }

    public void testCountSum100_1()
        throws Exception
    {
        testCountSum(100, 1);
    }

    public void testCountSum200_1()
        throws Exception
    {
        testCountSum(200, 1);
    }

    public void testCountSum400_1()
        throws Exception
    {
        testCountSum(400, 1);
    }

    public void testCountSum800_1()
        throws Exception
    {
        testCountSum(800, 1);
    }


    protected void testCountSum(int tasks, int loops)
    {
        count = 0;
        sum = 0L;
        for(int i = 0; i < tasks; i++ )
            tq.addTask(new Testrun(loops));
        tp.join();
        assertTrue("Count is wrong: "+count, count == tasks * loops);
        long tsum = tasks * loops * (loops - 1) / 2;
        assertEquals("Sum is wrong: "+sum, tsum, sum);
    }

    public void incCount(int i)
    {
        count++;
        sum += i;
    }

    // Another test (in the same class...) do some sync and String thing!
    private String res;

    public void testString()
    {
        res = "";
        for (int j = 0; j < 10; j++)
            tq.addTask(new Testrun2(Integer.toString(j),1000));    
        tp.join();
        assertTrue("Length of String", res.length() == 10000);
    }

    public synchronized void append(String s)
    {
        res += s;
    }

    public class Testrun
        implements Runnable
    {
        // Poor mans random sequence
        private int rnd;

        private int loops;

        public Testrun(int loops)
        {
            rnd = seed++;
            this.loops = loops;
        }

        public void run()
        {
            for (int i = 0; i< loops; i++ )
            {
                rnd = 5 * rnd + 1;
                ThreadUtil.sleep(0, rnd & 768); 
                incCount(i);
            }
        }
    }

    public class Testrun2
        implements Runnable
    {
        private String s;
        private int loops;

        public Testrun2(String s, int loops)
        {
            this.s = s;
            this.loops = loops;
        }

        public void run()
        {
            for(int i = 0; i < loops; i++)
            {
                append(s);
            }
        }
    }

    public static Test suite() {
        TestSuite suite = new TestSuite(ThreadPoolTest.class);
        return suite;
    }
    
    public static void main(java.lang.String[] args) {
        junit.textui.TestRunner.run(suite());
    }
}
//
//    Jacson - Text Filtering with Java.
//    Copyright (C) 2002 Frank S. Nestel (nestefan -at- users.sourceforge.net)
//
//    This library is free software; you can redistribute it and/or
//    modify it under the terms of the GNU Lesser General Public
//    License as published by the Free Software Foundation; either
//    version 2.1 of the License, or (at your option) any later version.
//
//    This library 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
//    Lesser General Public License for more details.
//
//    You should have received a copy of the GNU Lesser General Public
//    License along with this library; if not, write to the Free Software
//    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
//