dk.clanie.actor.ActorAspectTest.java Source code

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Here is the source code for dk.clanie.actor.ActorAspectTest.java

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/**
 * Copyright (C) 2011, Claus Nielsen, cn@cn-consult.dk
 *
 * 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 3 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.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */
package dk.clanie.actor;

import static org.hamcrest.Matchers.closeTo;
import static org.hamcrest.Matchers.equalTo;
import static org.junit.Assert.assertThat;

import java.util.concurrent.ExecutionException;
import java.util.concurrent.Future;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;

import org.joda.time.Duration;
import org.joda.time.Instant;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.annotation.Timed;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

/**
 * Test ActorAspect.
 * 
 * @author Claus Nielsen
 */
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration("actorAspectTestContext.xml")
public class ActorAspectTest {

    @Autowired
    private FirstTestActor actor;
    @Autowired
    private SecondTestActor actor2;

    private static final int ITERATIONS = 5;

    // Used in all test actor methods
    public static final int SLEEPTIME = 200;
    private static final double OVERHEAD = 0.5d;

    /**
     * Tests that methods returning Future on two different actors are executed in parallel.
     * <p/>
     * Each method call is expected to complete after a little more than SLEEPIME ms.<br/>
     * When calling methods on two different actors they should still complete almost as fast.
     * 
     * @throws InterruptedException
     * @throws ExecutionException
     * @throws TimeoutException
     */
    @Test
    @Timed(millis = (long) (ITERATIONS * SLEEPTIME * (1d + OVERHEAD)))
    public void testFutureParallel() throws InterruptedException, ExecutionException, TimeoutException {
        Future<?>[] futures = new Future<?>[ITERATIONS];
        Future<?>[] futures2 = new Future<?>[ITERATIONS];
        Instant startTime = new Instant();
        // Call actor methods
        for (int i = 0; i < ITERATIONS; i++) {
            futures[i] = actor.methodReturningFuture(i);
            futures2[i] = actor2.methodReturningFuture(i);
        }
        // Wait for them to complete
        for (int i = 0; i < ITERATIONS; i++) {
            futures[i].get(30, TimeUnit.SECONDS);
            futures2[i].get(30, TimeUnit.SECONDS);
        }
        // Check that they completed in the expected time.
        Instant endTime = new Instant();
        Duration executionTime = new Duration(startTime, endTime);
        Duration expectedExecutionTime = new Duration(ITERATIONS * SLEEPTIME);
        assertThat((double) executionTime.getMillis(),
                closeTo((double) expectedExecutionTime.getMillis(), expectedExecutionTime.getMillis() * OVERHEAD));
    }

    /**
     * Tests that void methods on two different actors are executed in parallel.
     * <p/>
     * Each method call is expected to complete after a little more than SLEEPIME ms.<br/>
     * When calling methods on two different actors they should still complete almost as fast.
     * 
     * @throws InterruptedException
     * @throws ExecutionException
     * @throws TimeoutException
     */
    @Test
    @Timed(millis = (long) (ITERATIONS * SLEEPTIME * (1d + OVERHEAD)))
    public void testVoidParallel() throws InterruptedException, ExecutionException, TimeoutException {
        Instant startTime = new Instant();
        // Call actor methods
        for (int i = 0; i < ITERATIONS; i++) {
            actor.voidMethod(i);
            actor2.voidMethod(i);
        }
        // Wait for them to complete
        actor.sync();
        actor2.sync();
        // Check that they completed in the expected time.
        Instant endTime = new Instant();
        Duration executionTime = new Duration(startTime, endTime);
        Duration expectedExecutionTime = new Duration(ITERATIONS * SLEEPTIME);
        assertThat((double) executionTime.getMillis(),
                closeTo((double) expectedExecutionTime.getMillis(), expectedExecutionTime.getMillis() * OVERHEAD));
    }

    /**
     * Tests that methods returning something blocks the caller.
     * 
     * @throws InterruptedException
     * @throws ExecutionException
     * @throws TimeoutException
     */
    @Test
    @Timed(millis = (long) (ITERATIONS * SLEEPTIME * (1d + OVERHEAD) * 2))
    public void testSequential() throws InterruptedException, ExecutionException, TimeoutException {
        Instant startTime = new Instant();
        // Call actor methods
        for (int i = 0; i < ITERATIONS; i++) {
            actor.methodReturningObject(i);
            actor2.methodReturningObject(i);
        }
        // Check that they completed in the expected time.
        Instant endTime = new Instant();
        Duration executionTime = new Duration(startTime, endTime);
        Duration expectedExecutionTime = new Duration(ITERATIONS * SLEEPTIME * 2);
        assertThat((double) executionTime.getMillis(),
                closeTo((double) expectedExecutionTime.getMillis(), expectedExecutionTime.getMillis() * OVERHEAD));
    }

    /**
     * Tests retrieving the return value from an synchronously called method.
     * 
     * @throws InterruptedException
     * @throws ExecutionException
     */
    @Test
    public void testGettingReturnValue() throws InterruptedException, ExecutionException {
        Future<Boolean> future = actor.methodReturningTrue();
        assertThat(future.get(), equalTo(Boolean.TRUE));
    }

}