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