/**
 * 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.basic;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.PrintStream;

import org.evosuite.EvoSuite;
import org.evosuite.Properties;
import org.evosuite.SystemTestBase;
import org.evosuite.utils.LoggingUtils;
import org.junit.*;

import com.examples.with.different.packagename.InfiniteLoops;
import com.examples.with.different.packagename.PrintingThatShouldBeMuted;
import com.examples.with.different.packagename.StaticPrinting;



public class SUTPrintingThatShouldBeMutedSystemTest extends SystemTestBase {

	public static final int defaultTimeout = Properties.TIMEOUT;
	public static final boolean defaultPrintToSystem = Properties.PRINT_TO_SYSTEM;
	
	public static final PrintStream defaultOut = System.out;

	@Before
	public void init(){
		LoggingUtils.changeLogbackFile(LoggingUtils.getLogbackFileName());
	}

	@After
	public void resetProperties(){
		Properties.TIMEOUT = defaultTimeout;
		Properties.PRINT_TO_SYSTEM = defaultPrintToSystem;
		
		System.setOut(defaultOut);
		LoggingUtils.changeLogbackFile("logback.xml");
	}


	public void checkIfMuted(String targetClass, String msgSUT){
		Properties.CLIENT_ON_THREAD = false;
		
		ByteArrayOutputStream byteStream = new ByteArrayOutputStream();
		PrintStream byteOut = new PrintStream(byteStream);
		System.setOut(byteOut);
		
		EvoSuite evosuite = new EvoSuite();
				
		Properties.TARGET_CLASS = targetClass;
		
		Properties.TIMEOUT = 300;
		
		//Properties.PRINT_TO_SYSTEM = true;
		
		String[] command = new String[]{				
				"-generateSuite",
				"-class",
				targetClass
				,"-Dprint_to_system=true" 
		};
		
		evosuite.parseCommandLine(command);
			
		String printed = byteStream.toString();
		Assert.assertTrue("PRINTED:\n"+printed,printed.contains("Starting client"));
		Assert.assertTrue("PRINTED:\n"+printed,printed.contains(msgSUT));		

		//Properties.PRINT_TO_SYSTEM = false;
		
		command = new String[]{				
				"-generateSuite",
				"-class",
				targetClass
				, "-Dprint_to_system=false" 
		};
		
		byteStream.reset();
		evosuite.parseCommandLine(command);
			
		printed = byteStream.toString();
		Assert.assertTrue("PRINTED:\n"+printed,printed.contains("Starting client"));
		Assert.assertFalse("PRINTED:\n"+printed,printed.contains(msgSUT));
		Assert.assertFalse("PRINTED:\n"+printed,printed.contains("ERROR"));
	}
	
	
	@Test
	public void testBase() throws IOException{	
		checkIfMuted(PrintingThatShouldBeMuted.class.getCanonicalName(),"Greater");
	}

	@Test
	public void testStatic() throws IOException{
		checkIfMuted(StaticPrinting.class.getCanonicalName(),"this should not be printed");
	}

	/**
	 * This has quite a few side effects on other test cases
	 * @throws IOException
	 */
	@Ignore
	@Test
	public void testInfiniteLoops() throws IOException{
		checkIfMuted(InfiniteLoops.class.getCanonicalName(),"This should not be printed");
	}
}