package org.djutils.stats.summarizers;
   
   import static org.junit.Assert.assertEquals;
   
   import org.junit.Test;
   
   /**
    * Test the Counter class.
    * <p>
   * Copyright (c) 2002-2022 Delft University of Technology, Jaffalaan 5, 2628 BX Delft, the Netherlands. All rights reserved. See
   * for project information <a href="https://simulation.tudelft.nl/" target="_blank"> https://simulation.tudelft.nl</a>. The DSOL
   * project is distributed under a three-clause BSD-style license, which can be found at
   * <a href="https://simulation.tudelft.nl/dsol/3.0/license.html" target="_blank">
   * https://simulation.tudelft.nl/dsol/3.0/license.html</a>.
   * <br>
   * @author <a href="https://www.tbm.tudelft.nl/averbraeck">Alexander Verbraeck</a>
   */
  public class CounterTest
  {
      /** Test the counter. */
      @Test
      public void testCounter()
      {
          String description = "counter description";
          Counter counter = new Counter(description);
          assertEquals(description, counter.toString());
          assertEquals(description, counter.getDescription());
  
          assertEquals(0L, counter.getN());
          assertEquals(0L, counter.getCount());
  
          counter.register(2);
          assertEquals(1L, counter.getN());
          assertEquals(2L, counter.getCount());
  
          counter.initialize();
          assertEquals(0L, counter.getN());
          assertEquals(0L, counter.getCount());
  
          long value = 0;
          for (int i = 0; i < 100; i++)
          {
              counter.register(2 * i);
              value += 2 * i;
          }
          assertEquals(100, counter.getN());
          assertEquals(value, counter.getCount());
      }
  }