/*
 * Copyright Terracotta, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.ehcache.impl.internal.util;

import org.junit.Test;

import java.util.concurrent.ThreadFactory;
import java.util.concurrent.atomic.AtomicReference;

import static org.hamcrest.Matchers.not;
import static org.hamcrest.core.Is.is;
import static org.junit.Assert.assertThat;

/**
 * @author Ludovic Orban
 */
public class ThreadFactoryUtilTest {

  @Test
  public void testCreatedThreadIsInFactoryCreatorsThreadGroup() throws Exception {
    final AtomicReference<String> threadGroupName = new AtomicReference<String>();
    final ThreadFactory myPool = ThreadFactoryUtil.threadFactory("ThreadFactoryUtilTest-pool");

    ThreadGroup testGroup = new ThreadGroup("ThreadFactoryUtilTest-testGroup");
    Thread threadWithNonDefaultGroup = new Thread(testGroup, new Runnable() {
      @Override
      public void run() {
        Thread poolCreatedThread = myPool.newThread(new Runnable() {
          @Override
          public void run() {
            ThreadGroup threadGroup = Thread.currentThread().getThreadGroup();
            threadGroupName.set(threadGroup.getName());
          }
        });
        poolCreatedThread.start();
        try {
          poolCreatedThread.join();
        } catch (InterruptedException e) {
          throw new AssertionError(e);
        }
      }
    });
    threadWithNonDefaultGroup.start();
    threadWithNonDefaultGroup.join();

    assertThat(threadGroupName.get(), is(not("ThreadFactoryUtilTest-testGroup")));
  }

}