ParallelizerTest.java

/**
 * Copyright (c) 2012-2017, jcabi.com
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met: 1) Redistributions of source code must retain the above
 * copyright notice, this list of conditions and the following
 * disclaimer. 2) Redistributions in binary form must reproduce the above
 * copyright notice, this list of conditions and the following
 * disclaimer in the documentation and/or other materials provided
 * with the distribution. 3) Neither the name of the jcabi.com nor
 * the names of its contributors may be used to endorse or promote
 * products derived from this software without specific prior written
 * permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT
 * NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
 * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
 * THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package com.jcabi.aspects.aj;

import com.jcabi.aspects.Parallel;
import com.jcabi.aspects.Tv;
import java.util.concurrent.atomic.AtomicInteger;
import org.hamcrest.MatcherAssert;
import org.hamcrest.Matchers;
import org.junit.Test;

/**
 * Tests for {@link Parallelizer}.
 *
 * @author Krzysztof Krason (Krzysztof.Krason@gmail.com)
 * @version $Id: d23ed3e5795f23717e017da7047af3b65e9218ca $
 * @since 0.10
 */
@SuppressWarnings("PMD.DoNotUseThreads")
public final class ParallelizerTest {
    /**
     * Method should execute in multiple threads.
     */
    @Test
    public void executesInParallel() {
        final AtomicInteger count = new AtomicInteger(Tv.TEN);
        new Runnable() {
            @Override
            @Parallel(threads = Tv.TEN)
            public void run() {
                count.decrementAndGet();
            }
        } .run();
        MatcherAssert.assertThat(count.get(), Matchers.equalTo(0));
    }

    /**
     * Method should have exception propagated.
     */
    @Test(expected = Exception.class)
    public void throwsCatchedException() {
        new Runnable() {
            @Override
            @Parallel(threads = Tv.TEN)
            public void run() {
                throw new IllegalArgumentException();
            }
        } .run();
    }
}