mitm.common.scheduler.TaskSchedulerTest.java Source code

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Here is the source code for mitm.common.scheduler.TaskSchedulerTest.java

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/*
 * Copyright (c) 2008-2011, Martijn Brinkers, Djigzo.
 * 
 * This file is part of Djigzo email encryption.
 *
 * Djigzo is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License 
 * version 3, 19 November 2007 as published by the Free Software 
 * Foundation.
 *
 * Djigzo 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public 
 * License along with Djigzo. If not, see <http://www.gnu.org/licenses/>
 *
 * Additional permission under GNU AGPL version 3 section 7
 * 
 * If you modify this Program, or any covered work, by linking or 
 * combining it with aspectjrt.jar, aspectjweaver.jar, tyrex-1.0.3.jar, 
 * freemarker.jar, dom4j.jar, mx4j-jmx.jar, mx4j-tools.jar, 
 * spice-classman-1.0.jar, spice-loggerstore-0.5.jar, spice-salt-0.8.jar, 
 * spice-xmlpolicy-1.0.jar, saaj-api-1.3.jar, saaj-impl-1.3.jar, 
 * wsdl4j-1.6.1.jar (or modified versions of these libraries), 
 * containing parts covered by the terms of Eclipse Public License, 
 * tyrex license, freemarker license, dom4j license, mx4j license,
 * Spice Software License, Common Development and Distribution License
 * (CDDL), Common Public License (CPL) the licensors of this Program grant 
 * you additional permission to convey the resulting work.
 */
package mitm.common.scheduler;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

import org.apache.commons.io.IOUtils;
import org.apache.commons.io.output.NullOutputStream;
import org.apache.log4j.PropertyConfigurator;
import org.junit.BeforeClass;
import org.junit.Test;

public class TaskSchedulerTest {
    private static class RunawayInputStream extends InputStream {
        private boolean closed;
        private final Object lock = new Object();

        @Override
        public int read() throws IOException {
            try {
                Thread.sleep(10);
            } catch (InterruptedException e) {
                // ignore
            }

            synchronized (lock) {
                return closed ? -1 : 0;
            }
        }

        @Override
        public void close() {
            synchronized (lock) {
                closed = true;
            }
        }
    }

    private static class SlowInputStream extends InputStream {
        private final int count;

        private final Object lock = new Object();
        private boolean closed;
        private int i;

        public SlowInputStream(int count) {
            this.count = count;
        }

        @Override
        public int read() throws IOException {
            if (i >= count) {
                close();
            }

            i++;

            try {
                Thread.sleep(10);
            } catch (InterruptedException e) {
                // ignore
            }

            synchronized (lock) {
                return closed ? -1 : 0;
            }
        }

        @Override
        public void close() {
            synchronized (lock) {
                closed = true;
            }
        }
    }

    @BeforeClass
    public static void setUpBeforeClass() {
        PropertyConfigurator.configure("conf/log4j.properties");
    }

    @Test
    public void testInputStreamTimeoutTask() throws IOException {
        TaskScheduler scheduler = new TaskScheduler("test");

        InputStream runawayInputStream = new RunawayInputStream();

        Task task = new InputStreamTimeoutTask(runawayInputStream, "testInputStreamTimeoutTask");

        scheduler.addTask(task, 500);

        OutputStream devNull = new NullOutputStream();

        IOUtils.copy(runawayInputStream, devNull);

        assertTrue(task.hasRun());
        assertFalse(task.isCanceled());
    }

    @Test
    public void testInputStreamTimeoutTaskCancelTask() throws IOException {
        TaskScheduler scheduler = new TaskScheduler("test");

        InputStream input = new SlowInputStream(50);

        Task task = new InputStreamTimeoutTask(input, "testInputStreamTimeoutTaskCancelTask");

        scheduler.addTask(task, 10);

        assertFalse(task.isCanceled());

        task.cancel();

        assertTrue(task.isCanceled());

        ByteArrayOutputStream bos = new ByteArrayOutputStream();

        IOUtils.copy(input, bos);

        assertEquals(50, bos.size());
    }

    @Test
    public void testInputStreamTimeoutTaskCancelScheduler() throws IOException {
        TaskScheduler scheduler = new TaskScheduler("test");

        InputStream input = new SlowInputStream(50);

        Task task = new InputStreamTimeoutTask(input, "testInputStreamTimeoutTaskCancelScheduler");

        scheduler.addTask(task, 10);

        assertFalse(scheduler.isCanceled());

        scheduler.cancel();

        assertTrue(scheduler.isCanceled());

        ByteArrayOutputStream bos = new ByteArrayOutputStream();

        IOUtils.copy(input, bos);

        assertEquals(50, bos.size());
    }

    @Test
    public void testThreadInterruptTimeoutTask() {
        TaskScheduler scheduler = new TaskScheduler("test");

        Task task = new ThreadInterruptTimeoutTask(Thread.currentThread(), "ThreadInterruptTimeoutTask");

        scheduler.addTask(task, 500);

        try {
            Thread.sleep(2000);

            fail();
        } catch (InterruptedException e) {
            // expected exception
        }

        assertTrue(task.hasRun());
        assertFalse(task.isCanceled());
    }

    @Test
    public void testThreadInterruptTimeoutTaskCancelTask() throws InterruptedException {
        TaskScheduler scheduler = new TaskScheduler("test");

        Task task = new ThreadInterruptTimeoutTask(Thread.currentThread(), "ThreadInterruptTimeoutTask");

        scheduler.addTask(task, 500);

        assertFalse(task.isCanceled());

        task.cancel();

        assertTrue(task.isCanceled());

        Thread.sleep(1000);
    }

    @Test
    public void testThreadInterruptTimeoutTaskCancelScheduler() throws InterruptedException {
        TaskScheduler scheduler = new TaskScheduler("test");

        Task task = new ThreadInterruptTimeoutTask(Thread.currentThread(), "ThreadInterruptTimeoutTask");

        scheduler.addTask(task, 500);

        assertFalse(scheduler.isCanceled());

        scheduler.cancel();

        assertTrue(scheduler.isCanceled());

        Thread.sleep(1000);
    }

}