/**
    * Logback: the reliable, generic, fast and flexible logging framework.
    * Copyright (C) 1999-2015, 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.core.spi;
  
  import ch.qos.logback.core.helpers.CyclicBuffer;
  import org.junit.jupiter.api.Test;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertNotNull;
  
  
  /**
   * @author Ceki Gülcü
   */
  public class CyclicBufferTrackerTest {
  
      CyclicBufferTracker<Object> tracker = new CyclicBufferTracker<Object>();
      String key = "a";
  
      @Test
      public void empty0() {
          long now = 3000;
          tracker.removeStaleComponents(now);
          assertEquals(0, tracker.liveKeysAsOrderedList().size());
          assertEquals(0, tracker.getComponentCount());
      }
  
      @Test
      public void empty1() {
          long now = 3000;
          assertNotNull(tracker.getOrCreate(key, now++));
          now += ComponentTracker.DEFAULT_TIMEOUT + 1000;
          tracker.removeStaleComponents(now);
          assertEquals(0, tracker.liveKeysAsOrderedList().size());
          assertEquals(0, tracker.getComponentCount());
  
          assertNotNull(tracker.getOrCreate(key, now++));
      }
  
      @Test
      public void smoke() {
          long now = 3000;
          CyclicBuffer<Object> cb = tracker.getOrCreate(key, now);
          assertEquals(cb, tracker.getOrCreate(key, now++));
          now += CyclicBufferTracker.DEFAULT_TIMEOUT + 1000;
          tracker.removeStaleComponents(now);
          assertEquals(0, tracker.liveKeysAsOrderedList().size());
          assertEquals(0, tracker.getComponentCount());
      }
  
      @Test
      public void destroy() {
          long now = 3000;
          CyclicBuffer<Object> cb = tracker.getOrCreate(key, now);
          cb.add(new Object());
          assertEquals(1, cb.length());
          tracker.endOfLife(key);
          now += CyclicBufferTracker.LINGERING_TIMEOUT + 10;
          tracker.removeStaleComponents(now);
          assertEquals(0, tracker.liveKeysAsOrderedList().size());
          assertEquals(0, tracker.getComponentCount());
          assertEquals(0, cb.length());
      }
  
  }