package org.apache.velocity.test;

/*
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2001 The Apache Software Foundation.  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. The end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Velocity", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
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 * 5. Products derived from this software may not be called "Apache"
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 * 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */

import org.apache.velocity.app.Velocity;
import org.apache.velocity.runtime.Runtime;
import org.apache.velocity.runtime.log.LogSystem;

import junit.framework.TestCase;

/**
 * Tests if we can hand Velocity an arbitrary class for logging.
 *
 * @author <a href="mailto:geirm@optonline.net">Geir Magnusson Jr.</a>
 * @version $Id: ExternalLoggerTest.java,v 1.1 2001/03/19 05:08:16 geirm Exp $
 */
public class ExternalLoggerTest extends TestCase implements LogSystem
{
   
    private String logString = null;

    /**
     * Default constructor.
     */
    public ExternalLoggerTest()
    {
        super("LoggerTest");

        try
        {
            /*
             *  use an alternative logger.  Set it up here and pass it in.
             */
            
            Velocity.setProperty(Velocity.RUNTIME_LOG_LOGSYSTEM, this );
            Velocity.init();
        }
        catch (Exception e)
        {
            System.err.println("Cannot setup LoggerTest : " + e);
            System.exit(1);
        }            
    }

    public static junit.framework.Test suite ()
    {
        return new ExternalLoggerTest();
    }

    /**
     * Runs the test.
     */
    public void runTest ()
    {
        /*
         *  simply log something and see if we get it.
         */

        logString = null;

        String testString = "This is a test.";

        Runtime.warn( testString );

        if (logString == null || !logString.equals( Runtime.WARN_PREFIX +  testString ) )
        {
            fail("Didn't recieve log message.");
        }
    }

    public void logVelocityMessage(int level, String message)
    {
        logString = message;
    }
  
    /**
     * Performs cleanup activities for this test case.
     */
    protected void tearDown () throws Exception
    {
        // No op.
    }
}

Test Velocity's facility to accept a living instance of a LogSystem class so a client app can have Velocity log to its existing log system if it chooses. PR: Obtained from: Submitted by: Reviewed by: