hazelcast-master/hazelcast/src/test/java/com/hazelcast/logging/Log4jLoggerLevelChangeTest.java
/*
 * Copyright (c) 2008-2023, Hazelcast, Inc. All Rights Reserved.
 *
 * Licensed 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 com.hazelcast.logging;

import com.hazelcast.core.HazelcastInstance;
import com.hazelcast.logging.impl.LoggingServiceImpl;
import com.hazelcast.test.HazelcastSerialClassRunner;
import com.hazelcast.test.HazelcastTestSupport;
import com.hazelcast.test.IsolatedLoggingRule;
import com.hazelcast.test.annotation.QuickTest;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import org.junit.runner.RunWith;

import java.util.logging.Level;

import static com.hazelcast.logging.Log4jTrackingAppender.registerTrackingAppender;
import static com.hazelcast.test.IsolatedLoggingRule.LOGGING_TYPE_LOG4J;

@RunWith(HazelcastSerialClassRunner.class)
@Category(QuickTest.class)
public class Log4jLoggerLevelChangeTest extends HazelcastTestSupport {

    @Rule
    public final IsolatedLoggingRule isolatedLoggingRule = new IsolatedLoggingRule();

    private LoggingServiceImpl loggingService;
    private Log4jTrackingAppender appender;
    private ILogger logger;

    @Before
    public void before() {
        isolatedLoggingRule.setLoggingType(LOGGING_TYPE_LOG4J);
        HazelcastInstance instance = createHazelcastInstance();
        loggingService = (LoggingServiceImpl) instance.getLoggingService();

        String loggerName = Log4jLoggerLevelChangeTest.class.getName();
        appender = registerTrackingAppender(loggerName);

        logger = loggingService.getLogger(loggerName);
    }

    @Test
    public void test() {
        appender.assertNoLoggedEvents();

        logger.finest("foo");
        appender.assertNoLoggedEvents();

        logger.severe("foo");
        appender.assertNumberOfLoggedEvents(1);

        loggingService.setLevel(Level.OFF);
        logger.severe("foo");
        appender.assertNumberOfLoggedEvents(2);

        loggingService.setLevel(Level.FINEST);
        logger.finest("foo");
        appender.assertNumberOfLoggedEvents(3);

        loggingService.resetLevel();
        logger.finest("foo");
        appender.assertNumberOfLoggedEvents(3);

        logger.severe("foo");
        appender.assertNumberOfLoggedEvents(4);
    }

}
