/*************************************************************************
 *                                                                       *
 *  EJBCA Community: The OpenSource Certificate Authority                *
 *                                                                       *
 *  This software 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 2.1 of the License, or any later version.                    *
 *                                                                       *
 *  See terms of license at gnu.org.                                     *
 *                                                                       *
 *************************************************************************/

package org.ejbca.util;

import static org.junit.Assert.assertTrue;

import java.lang.reflect.Method;
import java.util.regex.Pattern;

import org.apache.log4j.Logger;
import org.junit.Test;

/** 
 * Test the PatternLogger
 * 
 * @version $Id: PatternLoggerTest.java 22139 2015-11-03 10:41:56Z mikekushner $
 */
public class PatternLoggerTest {

    private static final Logger log = Logger.getLogger(PatternLoggerTest.class);

    /** Try out some interpolation with focus on different date formats. */
    @Test 
    public void testPatternLoggerDateFormats() throws Exception {
        log.trace(">testPatternLogger");
        final String LOG_PATTERN = "${VAR1};\"${VAR2}\";${" + IPatternLogger.LOG_TIME + "};${" + IPatternLogger.LOG_ID + "};${VAR3}";
        testPatternLoggerInternal(LOG_PATTERN, "yyyy-MM-dd:HH:mm:ss:z", "GMT",
                "^content1;\"content2\";\\d{4}-\\d{2}-\\d{2}:\\d{2}:\\d{2}:\\d{2}:GMT;0;content3$");
        testPatternLoggerInternal(LOG_PATTERN, "yyyy-MM-dd HH:mm:ssZ", "CET",
                "^content1;\"content2\";\\d{4}-\\d{2}-\\d{2} \\d{2}:\\d{2}:\\d{2}\\+0\\d00;0;content3$");
        testPatternLoggerInternal(LOG_PATTERN, "yyyy-MM-dd'T'HH:mm:ssZ", "CET",
                "^content1;\"content2\";\\d{4}-\\d{2}-\\d{2}T\\d{2}:\\d{2}:\\d{2}\\+0\\d00;0;content3$");
        log.trace("<testPatternLogger");
    }

    /** Helper method that replaces all ${VARx} where x={0..10} with "contentx" and asserts that the result is the expected using regexp. */
    private void testPatternLoggerInternal(String pattern, String dateFormat, String timeZone, String expected) throws Exception {
        log.trace(">testPatternLoggerInternal");
        final IPatternLogger patternLogger = new PatternLogger(Pattern.compile("\\$\\{(.+?)\\}").matcher(pattern), pattern, log, dateFormat, timeZone);
        for (int i = 0; i < 10; i++) {
            patternLogger.paramPut("VAR" + i, "content" + i);
        }
        // We reference the private method here, which is a bit ugly but works.
        final Method m = PatternLogger.class.getDeclaredMethod("interpolate", new Class[0]);
        m.setAccessible(true);
        final String result = (String) m.invoke(patternLogger);
        log.debug("result: " + result);
        assertTrue("Result of interpolation operation did not match expected result.", result.matches(expected));
        log.trace("<testPatternLoggerInternal");
    }
}