/**
 * Copyright (C) 2010-2017 Gordon Fraser, Andrea Arcuri and EvoSuite
 * contributors
 *
 * This file is part of EvoSuite.
 *
 * EvoSuite is free software: you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as published
 * by the Free Software Foundation, either version 3.0 of the License, or
 * (at your option) any later version.
 *
 * EvoSuite 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
 * Lesser Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with EvoSuite. If not, see <http://www.gnu.org/licenses/>.
 */
package org.evosuite.testcase;

import java.util.concurrent.Callable;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;

import org.evosuite.testcase.execution.TimeoutHandler;
import org.junit.*;

public class TimeoutIntTest
{
	protected static int RESULT = -1;
	
	@Test
	public void testNormalTimeout()
	{		
		ExecutorService executor = Executors.newSingleThreadExecutor();
		Callable<Integer> call = new FakeTestCase();
		
		TimeoutHandler<Integer> handler = new TimeoutHandler<Integer>();
		
		RESULT = -1;
		
		try {
			 handler.execute(call, executor, 2000, false);
		} catch (TimeoutException e) 
		{
			executor.shutdownNow();
			try {
				boolean terminated = executor.awaitTermination(2000, TimeUnit.MILLISECONDS);
				Assert.assertTrue(terminated);
			} catch (InterruptedException e1) {
				// TODO Auto-generated catch block
				e1.printStackTrace();
			}
			
			Assert.assertEquals(1, RESULT);
		} catch (InterruptedException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (ExecutionException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}
	
	
	@Test
	public void testCPUTimeout()
	{		
		ExecutorService executor = Executors.newSingleThreadExecutor();
		Callable<Integer> call = new FakeTestCase();
		
		TimeoutHandler<Integer> handler = new TimeoutHandler<Integer>();
		
		RESULT = -1;
		
		try {
			 handler.execute(call, executor, 2000, true);
		} catch (TimeoutException e) 
		{
			executor.shutdownNow();
			try {
				boolean terminated = executor.awaitTermination(1000, TimeUnit.MILLISECONDS);
				Assert.assertTrue(terminated);
			} catch (InterruptedException e1) {
				// TODO Auto-generated catch block
				e1.printStackTrace();
			}
			
			Assert.assertEquals(2, RESULT);
		} catch (InterruptedException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (ExecutionException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}
	
	
	protected class FakeTestCase implements Callable<Integer>
	{

		@Override
		public Integer call() throws Exception 
		{
			try
			{
				Thread.sleep(3000);
			}
			catch(InterruptedException e)
			{
				RESULT = 1;
				return 1;
			}
			
			while(true)
			{
				if(Thread.currentThread().isInterrupted())
					break;
				else
					Thread.yield();
			}
			
			RESULT = 2;
			return 2;
		}
	}
}