content: /*
   * 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 org.apache.bifromq.basecluster.memberlist;
  
  import static org.awaitility.Awaitility.await;
  import static org.testng.Assert.assertFalse;
  import static org.testng.Assert.assertNotSame;
  import static org.testng.Assert.assertSame;
  import static org.testng.Assert.assertTrue;
  
  import org.apache.bifromq.basecluster.membership.proto.HostEndpoint;
  import java.net.InetSocketAddress;
  import java.time.Duration;
  import org.testng.annotations.Test;
  
  public class HostAddressResolverTest {
      @Test
      public void unresolvedAddressShouldNotBeCached() {
          HostAddressResolver resolver = new HostAddressResolver(Duration.ofSeconds(1), Duration.ofSeconds(1));
          HostEndpoint host = HostEndpoint.newBuilder().setAddress("unresolved").setPort(1234).build();
          InetSocketAddress address = resolver.resolve(host);
          assertTrue(address.isUnresolved());
          assertNotSame(resolver.resolve(host), address);
      }
  
      @Test
      public void resolvedAddressShouldBeCached() {
          HostAddressResolver resolver = new HostAddressResolver(Duration.ofSeconds(1), Duration.ofSeconds(1));
          HostEndpoint host = HostEndpoint.newBuilder().setAddress("localhost").setPort(1234).build();
          InetSocketAddress address = resolver.resolve(host);
          assertFalse(address.isUnresolved());
          assertSame(resolver.resolve(host), address);
      }
  
      @Test
      public void resolvedAddressShouldBeRefreshed() {
          HostAddressResolver resolver = new HostAddressResolver(Duration.ofSeconds(1), Duration.ofMillis(100));
          HostEndpoint host = HostEndpoint.newBuilder().setAddress("localhost").setPort(1234).build();
          InetSocketAddress address = resolver.resolve(host);
          await().until(() -> resolver.resolve(host) != address);
      }
  }
  