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 package org.opendaylight.yangtools.util;
   9
  10 import static org.hamcrest.CoreMatchers.startsWith;
  11 import static org.hamcrest.MatcherAssert.assertThat;
  12 import static org.junit.jupiter.api.Assertions.assertEquals;
  13
  14 import org.junit.jupiter.api.Test;
  15
  16 /**
  17  * Unit tests for DurationStatsTracker.
  18  *
  19  * @author Thomas Pantelis
  20  */
  21 class DurationStatisticsTrackerTest {
  22     @Test
  23     void test() {
  24         final var tracker = DurationStatisticsTracker.createConcurrent();
  25
  26         tracker.addDuration(10000);
  27         assertEquals(1, tracker.getTotalDurations(), "getTotalDurations");
  28         assertEquals(10000.0, tracker.getAverageDuration(), 0.1, "getAverageDuration");
  29         assertEquals(10000, tracker.getLongestDuration(), "getLongestDuration");
  30         assertEquals(10000, tracker.getShortestDuration(), "getShortestDuration");
  31
  32         tracker.addDuration(30000);
  33         assertEquals(2, tracker.getTotalDurations(), "getTotalDurations");
  34         assertEquals(20000.0, tracker.getAverageDuration(), 0.1, "getAverageDuration");
  35         assertEquals(30000, tracker.getLongestDuration(), "getLongestDuration");
  36         assertEquals(10000, tracker.getShortestDuration(), "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(3, tracker.getTotalDurations(), "getTotalDurations");
  47         assertEquals(16666.0, tracker.getAverageDuration(), 1.0, "getAverageDuration");
  48         assertEquals(30000, tracker.getLongestDuration(), "getLongestDuration");
  49         assertEquals(10000, tracker.getShortestDuration(), "getShortestDuration");
  50
  51         tracker.addDuration(5000);
  52         assertEquals(4, tracker.getTotalDurations(), "getTotalDurations");
  53         assertEquals(13750.0, tracker.getAverageDuration(), 1.0, "getAverageDuration");
  54         assertEquals(30000, tracker.getLongestDuration(), "getLongestDuration");
  55         assertEquals(5000, tracker.getShortestDuration(), "getShortestDuration");
  56
  57         tracker.reset();
  58         assertEquals(0, tracker.getTotalDurations(), "getTotalDurations");
  59         assertEquals(0.0, tracker.getAverageDuration(), 0.1, "getAverageDuration");
  60         assertEquals(0, tracker.getLongestDuration(), "getLongestDuration");
  61         assertEquals(0, tracker.getShortestDuration(), "getShortestDuration");
  62
  63         tracker.addDuration(10000);
  64         assertEquals(1, tracker.getTotalDurations(), "getTotalDurations");
  65         assertEquals(10000.0, tracker.getAverageDuration(), 0.1, "getAverageDuration");
  66         assertEquals(10000, tracker.getLongestDuration(), "getLongestDuration");
  67         assertEquals(10000, tracker.getShortestDuration(), "getShortestDuration");
  68     }
  69
  70     private static void verifyDisplayableString(final String name, final String actual, final String expPrefix) {
  71         assertThat(actual, startsWith(expPrefix));
  72     }
  73 }