opendaylight/md-sal/sal-akka-raft/src/test/java/org/opendaylight/controller/cluster/raft/FollowerLogInformationImplTest.java

   1 /*
   2  * Copyright (c) 2014 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 package org.opendaylight.controller.cluster.raft;
   9
  10
  11 import com.google.common.base.Stopwatch;
  12 import com.google.common.util.concurrent.Uninterruptibles;
  13 import org.junit.Test;
  14 import scala.concurrent.duration.FiniteDuration;
  15
  16 import java.util.concurrent.TimeUnit;
  17 import java.util.concurrent.atomic.AtomicLong;
  18
  19 import static org.junit.Assert.assertFalse;
  20 import static org.junit.Assert.assertTrue;
  21
  22 public class FollowerLogInformationImplTest {
  23
  24     @Test
  25     public void testIsFollowerActive() {
  26
  27         FiniteDuration timeoutDuration =
  28             new FiniteDuration(500, TimeUnit.MILLISECONDS);
  29
  30         FollowerLogInformation followerLogInformation =
  31             new FollowerLogInformationImpl(
  32                 "follower1", new AtomicLong(10), new AtomicLong(9), timeoutDuration);
  33
  34
  35
  36         assertFalse("Follower should be termed inactive before stopwatch starts",
  37             followerLogInformation.isFollowerActive());
  38
  39         followerLogInformation.markFollowerActive();
  40         if (sleepWithElaspsedTimeReturned(200) > 200) {
  41           return;
  42         }
  43         assertTrue("Follower should be active", followerLogInformation.isFollowerActive());
  44
  45         if (sleepWithElaspsedTimeReturned(400) > 400) {
  46             return;
  47         }
  48         assertFalse("Follower should be inactive after time lapsed",
  49             followerLogInformation.isFollowerActive());
  50
  51         followerLogInformation.markFollowerActive();
  52         assertTrue("Follower should be active from inactive",
  53             followerLogInformation.isFollowerActive());
  54     }
  55
  56     // we cannot rely comfortably that the sleep will indeed sleep for the desired time
  57     // hence getting the actual elapsed time and do a match.
  58     // if the sleep has spilled over, then return the test gracefully
  59     private long sleepWithElaspsedTimeReturned(long millis) {
  60         Stopwatch stopwatch = new Stopwatch();
  61         stopwatch.start();
  62         Uninterruptibles.sleepUninterruptibly(millis, TimeUnit.MILLISECONDS);
  63         stopwatch.stop();
  64         return stopwatch.elapsed(TimeUnit.MILLISECONDS);
  65     }
  66 }