common/util/src/test/java/org/opendaylight/yangtools/util/DurationStatisticsTrackerTest.java

   1 /*
   2  * Copyright (c) 2014 Brocade Communications Systems, Inc. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8
   9 package org.opendaylight.yangtools.util;
  10
  11 import static org.junit.Assert.assertEquals;
  12
  13 import org.junit.Test;
  14
  15 /**
  16  * Unit tests for DurationStatsTracker.
  17  *
  18  * @author Thomas Pantelis
  19  */
  20 public class DurationStatisticsTrackerTest {
  21
  22     @Test
  23     public void test() {
  24
  25         DurationStatisticsTracker tracker = DurationStatisticsTracker.createConcurrent();
  26
  27         tracker.addDuration(10000);
  28         assertEquals("getTotalDurations", 1, tracker.getTotalDurations());
  29         assertEquals("getAverageDuration", 10000.0, tracker.getAverageDuration(), 0.1);
  30         assertEquals("getLongestDuration", 10000, tracker.getLongestDuration());
  31         assertEquals("getShortestDuration", 10000, tracker.getShortestDuration());
  32
  33         tracker.addDuration(30000);
  34         assertEquals("getTotalDurations", 2, tracker.getTotalDurations());
  35         assertEquals("getAverageDuration", 20000.0, tracker.getAverageDuration(), 0.1);
  36         assertEquals("getLongestDuration", 30000, tracker.getLongestDuration());
  37         assertEquals("getShortestDuration", 10000, tracker.getShortestDuration());
  38
  39         verifyDisplayableString("getDisplayableAverageDuration",
  40                 tracker.getDisplayableAverageDuration(), "20.0");
  41         verifyDisplayableString("getDisplayableLongestDuration",
  42                 tracker.getDisplayableLongestDuration(), "30.0");
  43         verifyDisplayableString("getDisplayableShortestDuration",
  44                 tracker.getDisplayableShortestDuration(), "10.0");
  45
  46         tracker.addDuration(10000);
  47         assertEquals("getTotalDurations", 3, tracker.getTotalDurations());
  48         assertEquals("getAverageDuration", 16666.0, tracker.getAverageDuration(), 1.0);
  49         assertEquals("getLongestDuration", 30000, tracker.getLongestDuration());
  50         assertEquals("getShortestDuration", 10000, tracker.getShortestDuration());
  51
  52         tracker.addDuration(5000);
  53         assertEquals("getTotalDurations", 4, tracker.getTotalDurations());
  54         assertEquals("getAverageDuration", 13750.0, tracker.getAverageDuration(), 1.0);
  55         assertEquals("getLongestDuration", 30000, tracker.getLongestDuration());
  56         assertEquals("getShortestDuration", 5000, tracker.getShortestDuration());
  57
  58         tracker.reset();
  59         assertEquals("getTotalDurations", 0, tracker.getTotalDurations());
  60         assertEquals("getAverageDuration", 0.0, tracker.getAverageDuration(), 0.1);
  61         assertEquals("getLongestDuration", 0, tracker.getLongestDuration());
  62         assertEquals("getShortestDuration", 0, tracker.getShortestDuration());
  63
  64         tracker.addDuration(10000);
  65         assertEquals("getTotalDurations", 1, tracker.getTotalDurations());
  66         assertEquals("getAverageDuration", 10000.0, tracker.getAverageDuration(), 0.1);
  67         assertEquals("getLongestDuration", 10000, tracker.getLongestDuration());
  68         assertEquals("getShortestDuration", 10000, tracker.getShortestDuration());
  69     }
  70
  71     private static void verifyDisplayableString(final String name, final String actual, final String expPrefix) {
  72         assertEquals(name + " starts with " + expPrefix + ". Actual: " + actual,
  73                 true, actual.startsWith(expPrefix));
  74     }
  75 }