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 import org.junit.Test;
  13
  14 /**
  15  * Unit tests for DurationStatsTracker.
  16  *
  17  * @author Thomas Pantelis
  18  */
  19 public class DurationStatisticsTrackerTest {
  20
  21     @Test
  22     public void test() {
  23
  24         DurationStatisticsTracker tracker = DurationStatisticsTracker.createConcurrent();
  25
  26         tracker.addDuration(10000);
  27         assertEquals("getTotalDurations", 1, tracker.getTotalDurations());
  28         assertEquals("getAverageDuration", 10000.0, tracker.getAverageDuration(), 0.1);
  29         assertEquals("getLongestDuration", 10000, tracker.getLongestDuration());
  30         assertEquals("getShortestDuration", 10000, tracker.getShortestDuration());
  31
  32         tracker.addDuration(30000);
  33         assertEquals("getTotalDurations", 2, tracker.getTotalDurations());
  34         assertEquals("getAverageDuration", 20000.0, tracker.getAverageDuration(), 0.1);
  35         assertEquals("getLongestDuration", 30000, tracker.getLongestDuration());
  36         assertEquals("getShortestDuration", 10000, tracker.getShortestDuration());
  37
  38         verifyDisplayableString("getDisplayableAverageDuration",
  39                 tracker.getDisplayableAverageDuration(), "20.0");
  40         verifyDisplayableString("getDisplayableLongestDuration",
  41                 tracker.getDisplayableLongestDuration(), "30.0");
  42         verifyDisplayableString("getDisplayableShortestDuration",
  43                 tracker.getDisplayableShortestDuration(), "10.0");
  44
  45         tracker.addDuration(10000);
  46         assertEquals("getTotalDurations", 3, tracker.getTotalDurations());
  47         assertEquals("getAverageDuration", 16666.0, tracker.getAverageDuration(), 1.0);
  48         assertEquals("getLongestDuration", 30000, tracker.getLongestDuration());
  49         assertEquals("getShortestDuration", 10000, tracker.getShortestDuration());
  50
  51         tracker.addDuration(5000);
  52         assertEquals("getTotalDurations", 4, tracker.getTotalDurations());
  53         assertEquals("getAverageDuration", 13750.0, tracker.getAverageDuration(), 1.0);
  54         assertEquals("getLongestDuration", 30000, tracker.getLongestDuration());
  55         assertEquals("getShortestDuration", 5000, tracker.getShortestDuration());
  56
  57         tracker.reset();
  58         assertEquals("getTotalDurations", 0, tracker.getTotalDurations());
  59         assertEquals("getAverageDuration", 0.0, tracker.getAverageDuration(), 0.1);
  60         assertEquals("getLongestDuration", 0, tracker.getLongestDuration());
  61         assertEquals("getShortestDuration", 0, tracker.getShortestDuration());
  62
  63         tracker.addDuration(10000);
  64         assertEquals("getTotalDurations", 1, tracker.getTotalDurations());
  65         assertEquals("getAverageDuration", 10000.0, tracker.getAverageDuration(), 0.1);
  66         assertEquals("getLongestDuration", 10000, tracker.getLongestDuration());
  67         assertEquals("getShortestDuration", 10000, tracker.getShortestDuration());
  68     }
  69
  70     private static void verifyDisplayableString(final String name, final String actual, final String expPrefix) {
  71         assertEquals(name + " starts with " + expPrefix + ". Actual: " + actual,
  72                 true, actual.startsWith(expPrefix));
  73     }
  74 }