com.brienwheeler.lib.concurrent.NamedThreadFactoryTest.java Source code

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Here is the source code for com.brienwheeler.lib.concurrent.NamedThreadFactoryTest.java

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/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2013 Brien L. Wheeler (brienwheeler@yahoo.com)
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
package com.brienwheeler.lib.concurrent;

import java.util.concurrent.atomic.AtomicReference;

import org.junit.Assert;
import org.junit.Test;
import org.springframework.test.util.ReflectionTestUtils;

public class NamedThreadFactoryTest {
    private static final String NAME = "TestThreadFactory";

    @Test
    public void testConstruct() {
        NamedThreadFactory factory = new NamedThreadFactory();
        Assert.assertNotNull(factory);
    }

    @Test
    public void testConstruct2() {
        NamedThreadFactory factory = new NamedThreadFactory(NAME);
        Assert.assertNotNull(factory);
        Assert.assertEquals(NAME, factory.getName());
    }

    @Test
    public void testNewThread() {
        NamedThreadFactory factory = new NamedThreadFactory();
        factory.setName(NAME);
        Thread thread = factory.newThread(new NullRunnable());
        Assert.assertEquals(NAME + "-1", thread.getName());
    }

    @Test(expected = IllegalStateException.class)
    public void testNewThreadNotNamed() {
        NamedThreadFactory factory = new NamedThreadFactory();
        factory.newThread(new NullRunnable());
    }

    @Test(expected = IllegalStateException.class)
    public void testGetNameFail() {
        NamedThreadFactory factory = new NamedThreadFactory();
        factory.getName();
    }

    @Test
    public void testSetName() {
        NamedThreadFactory factory = new NamedThreadFactory();
        factory.setName(NAME);
        Assert.assertEquals(NAME, factory.getName());
    }

    @Test(expected = IllegalStateException.class)
    public void testSetNameFailReset() {
        NamedThreadFactory factory = new NamedThreadFactory();
        factory.setName(NAME);
        factory.setName(NAME);
    }

    @Test
    public void testGetThreadGroup() {
        NamedThreadFactory factory = new NamedThreadFactory();
        factory.setName(NAME);
        factory.getThreadGroup();
    }

    @Test(expected = IllegalStateException.class)
    public void testGetThreadGroupNotNamed() {
        NamedThreadFactory factory = new NamedThreadFactory();
        factory.getThreadGroup();
    }

    @Test
    public void testTwoThreadsSameGroup() {
        NamedThreadFactory factory = new NamedThreadFactory();
        factory.setName(NAME);
        Thread thread1 = factory.newThread(new NullRunnable());
        Assert.assertEquals(NAME + "-1", thread1.getName());
        Thread thread2 = factory.newThread(new NullRunnable());
        Assert.assertEquals(NAME + "-2", thread2.getName());
        Assert.assertEquals(thread1.getThreadGroup(), thread2.getThreadGroup());
    }

    @Test
    public void testTwoFactoriesSameName() {
        NamedThreadFactory factory1 = new NamedThreadFactory();
        factory1.setName(NAME);
        Thread thread1 = factory1.newThread(new NullRunnable());
        Assert.assertEquals(NAME + "-1", thread1.getName());

        NamedThreadFactory factory2 = new NamedThreadFactory();
        factory2.setName(NAME);
        Thread thread2 = factory2.newThread(new NullRunnable());
        Assert.assertEquals(NAME + "-1", thread2.getName());

        Assert.assertNotSame(thread1.getThreadGroup(), thread2.getThreadGroup());
    }

    @SuppressWarnings("unchecked")
    @Test
    public void testSetUncaughtExceptionHandler() {
        NamedThreadFactory factory = new NamedThreadFactory();
        UncaughtExceptionHandler handler = new UncaughtExceptionHandler();
        factory.setUncaughtExceptionHandler(handler);
        AtomicReference<Thread.UncaughtExceptionHandler> ref = (AtomicReference<Thread.UncaughtExceptionHandler>) ReflectionTestUtils
                .getField(factory, "uncaughtExceptionHandler");
        Assert.assertSame(handler, ref.get());
    }
}