log4j2-core/src/test/java/org/apache/logging/log4j/core/config/XMLConfigurationTest.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.apache.logging.log4j.core.config;

import org.apache.logging.log4j.Level;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.apache.logging.log4j.core.Appender;
import org.apache.logging.log4j.core.Filter;
import org.apache.logging.log4j.core.LoggerContext;
import org.apache.logging.log4j.core.filter.MDCFilter;
import org.apache.logging.log4j.internal.StatusData;
import org.apache.logging.log4j.internal.StatusLogger;
import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Test;

import java.util.List;
import java.util.Map;

import static org.junit.Assert.assertTrue;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertEquals;

/**
 *
 */
public class XMLConfigurationTest {

    private static final String CONFIG = "log4j-test1.xml";

    @BeforeClass
    public static void setupClass() {
        System.setProperty(XMLConfigurationFactory.CONFIGURATION_FILE_PROPERTY, CONFIG);
        LoggerContext ctx = (LoggerContext) LogManager.getContext();
        Configuration config = ctx.getConfiguration();
        if (config instanceof XMLConfiguration) {
            String name = ((XMLConfiguration) config).getName();
            if (name == null || !name.equals("XMLConfigTest")) {
                ctx.reconfigure();
            }
        } else {
            ctx.reconfigure();
        }
    }

    @AfterClass
    public static void cleanupClass() {
        System.clearProperty(XMLConfigurationFactory.CONFIGURATION_FILE_PROPERTY);
        LoggerContext ctx = (LoggerContext) LogManager.getContext();
        ctx.reconfigure();
        StatusLogger.getLogger().reset();
    }

    @Test
    public void testLogger() {
        Logger logger = LogManager.getLogger("org.apache.logging.log4j.test1.Test");
        assertTrue(logger instanceof org.apache.logging.log4j.core.Logger);
        org.apache.logging.log4j.core.Logger l = (org.apache.logging.log4j.core.Logger) logger;
        assertTrue(l.getLevel().equals(Level.DEBUG));
        List<Filter> filters = l.getFilters();
        assertTrue("number of filters - " + filters.size(), filters.size() == 1);
        Filter filter = filters.get(0);
        assertTrue(filter instanceof MDCFilter);
        Map<String, Appender> appenders = l.getAppenders();
        assertNotNull(appenders);
        assertTrue("number of appenders = " + appenders.size(), appenders.size() == 1);
        Appender a = appenders.get("STDOUT");
        assertNotNull(a);
        assertEquals(a.getName(), "STDOUT");
    }

    @Test
    public void logToFile() {
        Logger logger = LogManager.getLogger("org.apache.logging.log4j.test2.Test");
        logger.debug("This is a test");
    }

}