openflowplugin-impl/src/test/java/org/opendaylight/openflowplugin/impl/statistics/TimeCounterTest.java

   1 /*
   2  * Copyright (c) 2015 Cisco 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.openflowplugin.impl.statistics;
  10
  11 import org.junit.Assert;
  12 import org.junit.Before;
  13 import org.junit.Test;
  14 import org.slf4j.Logger;
  15 import org.slf4j.LoggerFactory;
  16
  17 /**
  18  * Test for {@link TimeCounter}.
  19  */
  20 public class TimeCounterTest {
  21
  22     private static final Logger LOG = LoggerFactory.getLogger(TimeCounterTest.class);
  23     private TimeCounter timeCounter;
  24
  25     @Before
  26     public void setUp() throws Exception {
  27         timeCounter = new TimeCounter();
  28     }
  29
  30     @Test
  31     public void testGetAverageTimeBetweenMarks() throws Exception {
  32         Assert.assertEquals(0, timeCounter.getAverageTimeBetweenMarks());
  33         timeCounter.markStart();
  34         Assert.assertEquals(0, timeCounter.getAverageTimeBetweenMarks());
  35
  36         zzz(2L);
  37         timeCounter.addTimeMark();
  38         Assert.assertEquals(2, timeCounter.getAverageTimeBetweenMarks());
  39
  40         zzz(2L);
  41         timeCounter.addTimeMark();
  42         Assert.assertEquals(2, timeCounter.getAverageTimeBetweenMarks());
  43
  44         zzz(5L);
  45         timeCounter.addTimeMark();
  46         Assert.assertEquals(3, timeCounter.getAverageTimeBetweenMarks());
  47     }
  48
  49     private void zzz(long length) {
  50         try {
  51             Thread.sleep(length);
  52         } catch (InterruptedException e) {
  53             LOG.error("processing sleep interrupted", e);
  54         }
  55     }
  56 }