log4j-core/src/test/java/org/apache/logging/log4j/core/async/AsyncLoggerClassLoadDeadlockTest.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.async;

import org.apache.logging.log4j.categories.AsyncLoggers;
import org.apache.logging.log4j.core.config.ConfigurationFactory;
import org.junit.BeforeClass;
import org.junit.Test;
import org.junit.experimental.categories.Category;

import static org.junit.Assert.*;

/**
 * Test class loading deadlock condition from the LOG4J2-1457
 */
@Category(AsyncLoggers.class)
public class AsyncLoggerClassLoadDeadlockTest {

    static final int RING_BUFFER_SIZE = 128;

    @BeforeClass
    public static void beforeClass() {
        System.setProperty("Log4jContextSelector", "org.apache.logging.log4j.core.async.AsyncLoggerContextSelector");
        System.setProperty("AsyncLogger.RingBufferSize", String.valueOf(RING_BUFFER_SIZE));
        System.setProperty(ConfigurationFactory.CONFIGURATION_FILE_PROPERTY, "AsyncLoggerConsoleTest.xml");
    }

    @Test(timeout = 30000)
    public void testClassLoaderDeadlock() throws Exception {
        //touch the class so static init will be called
        final AsyncLoggerClassLoadDeadlock temp = new AsyncLoggerClassLoadDeadlock();
        assertNotNull(temp);
    }
}