content: /**
   * Copyright The Apache Software Foundation
   *
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements. See the NOTICE file distributed with this
   * work for additional information regarding copyright ownership. The ASF
   * licenses this file to you under the Apache License, Version 2.0 (the
   * "License"); you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   * http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
   * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
   * License for the specific language governing permissions and limitations
   * under the License.
   */
  package com.alibaba.wasp.master;
  
  import com.alibaba.wasp.ServerName;
  import org.junit.Test;
  
  import static org.junit.Assert.assertFalse;
  import static org.junit.Assert.assertTrue;
  
  public class TestDeadServer {
    @Test
    public void testIsDead() {
      DeadServer ds = new DeadServer();
      final ServerName hostname123 = new ServerName("127.0.0.1", 123, 3L);
      ds.add(hostname123);
      assertTrue(ds.areDeadServersInProgress());
      ds.finish(hostname123);
      assertFalse(ds.areDeadServersInProgress());
      final ServerName hostname1234 = new ServerName("127.0.0.2", 1234, 4L);
      ds.add(hostname1234);
      assertTrue(ds.areDeadServersInProgress());
      ds.finish(hostname1234);
      assertFalse(ds.areDeadServersInProgress());
      final ServerName hostname12345 = new ServerName("127.0.0.2", 12345, 4L);
      ds.add(hostname12345);
      assertTrue(ds.areDeadServersInProgress());
      ds.finish(hostname12345);
      assertFalse(ds.areDeadServersInProgress());
  
      // Already dead = 127.0.0.1,9090,112321
      // Coming back alive = 127.0.0.1,9090,223341
  
      final ServerName deadServer = new ServerName("127.0.0.1", 9090, 112321L);
      assertFalse(ds.cleanPreviousInstance(deadServer));
      ds.add(deadServer);
      assertTrue(ds.isDeadServer(deadServer));
      final ServerName deadServerHostComingAlive = new ServerName("127.0.0.1",
          9090, 112321L);
      assertTrue(ds.cleanPreviousInstance(deadServerHostComingAlive));
      assertFalse(ds.isDeadServer(deadServer));
      assertFalse(ds.cleanPreviousInstance(deadServerHostComingAlive));
    }
  
  }
  