GrizzlyExecutorServiceTest.java

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package com.sun.grizzly.util;

import java.util.LinkedList;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
import org.junit.After;
import org.junit.AfterClass;
import org.junit.Before;
import org.junit.BeforeClass;
import org.junit.Test;
import static org.junit.Assert.*;

/**
 *
 * @author gustav trede
 */
public class GrizzlyExecutorServiceTest {

    public GrizzlyExecutorServiceTest() {
    }

    @BeforeClass
    public static void setUpClass() throws Exception {
    }

    @AfterClass
    public static void tearDownClass() throws Exception {
    }

    @Before
    public void setUp() {
    }

    @After
    public void tearDown() {
    }

    @Test
    public void testCreateInstance() throws Exception {
        int threads = 100;
        ThreadPoolConfig cfg = new ThreadPoolConfig("test", -1, threads,
                null, -1, 0, null, null, Thread.NORM_PRIORITY, null);
        GrizzlyExecutorService r = GrizzlyExecutorService.createInstance(cfg);        
        final int tasks = 2000000;
        doTest(r,tasks);
        assertTrue(r.getMaximumPoolSize() == threads);
        assertTrue(r.getActiveCount() == 0);
        assertTrue(r.getCompletedTaskCount() == 0);
        assertTrue(r.getMaxQueuedTasksCount() == cfg.getQueueLimit());
        int jver = Integer.valueOf(System.getProperty("java.version").substring(0,3).replace(".", ""));
        assertTrue(jver < 16 || r.getQueue().getClass().getSimpleName().contains("LinkedTransferQueue"));

        doTest(r.reconfigure(r.getConfiguration().setQueueLimit(tasks)),tasks);
        assertTrue(r.getMaxQueuedTasksCount() == tasks);

        int coresize = r.getConfiguration().getMaxPoolSize()+1;
        doTest( r.reconfigure(r.getConfiguration().
                setQueue(new LinkedList<Runnable>()).
                setCorePoolSize(coresize).
                setKeepAliveTime(1, TimeUnit.MILLISECONDS).
                setMaxPoolSize(threads+=50)),tasks);
        assertTrue(r.getQueue().getClass().getSimpleName().contains("LinkedList"));
        assertTrue(r.getName() == cfg.getPoolName());
        assertTrue(r.getMaxQueuedTasksCount() == tasks);
        assertTrue(r.getCorePoolSize() == coresize);
        assertTrue(r.getMaximumPoolSize() == threads);
        r.shutdownNow();
       /* long a = r.getCompletedTaskCount();
        assertTrue(a+"!="+tasks,a == tasks);*/
    }

    private void doTest(GrizzlyExecutorService r,int tasks) throws Exception{        
        Utils.dumpErr("threadpool queueImpl : "+r.getQueue().getClass());
        final CountDownLatch cl = new CountDownLatch(tasks);
        while(tasks-->0){
            r.execute(new Runnable() {
                public void run() {
                  cl.countDown();
                }
            });
        }
        assertTrue("latch timed out",cl.await(30, TimeUnit.SECONDS));
    }
}