ConcurrentSiftingTest.java

/**
 * Logback: the reliable, generic, fast and flexible logging framework.
 * Copyright (C) 1999-2013, QOS.ch. All rights reserved.
 *
 * This program and the accompanying materials are dual-licensed under
 * either the terms of the Eclipse Public License v1.0 as published by
 * the Eclipse Foundation
 *
 *   or (per the licensee's choosing)
 *
 * under the terms of the GNU Lesser General Public License version 2.1
 * as published by the Free Software Foundation.
 */
package ch.qos.logback.classic.issue.lbclassic203;

import static junit.framework.Assert.assertEquals;

import org.junit.Test;

import ch.qos.logback.classic.ClassicTestConstants;
import ch.qos.logback.classic.Logger;
import ch.qos.logback.classic.LoggerContext;
import ch.qos.logback.classic.issue.lbclassic135.LoggingRunnable;
import ch.qos.logback.classic.joran.JoranConfigurator;
import ch.qos.logback.core.contention.MultiThreadedHarness;
import ch.qos.logback.core.contention.RunnableWithCounterAndDone;
import ch.qos.logback.core.joran.spi.JoranException;
import org.junit.Test;

import static org.junit.Assert.assertEquals;

public class ConcurrentSiftingTest {
  final static int THREAD_COUNT = 5;
  static String FOLDER_PREFIX = ClassicTestConstants.JORAN_INPUT_PREFIX
      + "sift/";

  LoggerContext loggerContext = new LoggerContext();
  protected Logger logger = loggerContext.getLogger(this.getClass().getName());
  protected Logger root = loggerContext.getLogger(Logger.ROOT_LOGGER_NAME);

  int totalTestDuration = 50;
  MultiThreadedHarness harness = new MultiThreadedHarness(totalTestDuration);
  RunnableWithCounterAndDone[] runnableArray = buildRunnableArray();

  protected void configure(String file) throws JoranException {
    JoranConfigurator jc = new JoranConfigurator();
    jc.setContext(loggerContext);
    jc.doConfigure(file);
  }

  RunnableWithCounterAndDone[] buildRunnableArray() {
    RunnableWithCounterAndDone[] rArray = new RunnableWithCounterAndDone[THREAD_COUNT];
    for (int i = 0; i < THREAD_COUNT; i++) {
      rArray[i] = new LoggingRunnable(logger);
    }
    return rArray;
  }

  @Test
  public void concurrentAccess() throws JoranException, InterruptedException {
    configure(FOLDER_PREFIX + "lbclassic203.xml");
    harness.execute(runnableArray);
    assertEquals(1, InstanceCountingAppender.INSTANCE_COUNT);
  }
}