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
   *
   *     https://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.avro.ipc.netty;
  
  import org.apache.avro.ipc.Transceiver;
  
  import org.junit.jupiter.api.Test;
  
  import java.io.IOException;
  
  import static org.junit.jupiter.api.Assertions.assertThrows;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  import static org.junit.jupiter.api.Assertions.fail;
  
  import java.net.InetSocketAddress;
  import java.net.ServerSocket;
  
  import io.netty.channel.socket.SocketChannel;
  
  /**
   * This is a very specific test that verifies that if the NettyTransceiver fails
   * to connect it cleans up the netty channel that it has created.
   */
  public class TestNettyTransceiverWhenFailsToConnect {
    SocketChannel channel = null;
  
    @Test
    void nettyTransceiverReleasesNettyChannelOnFailingToConnect() throws Exception {
      assertThrows(IOException.class, () -> {
        try (ServerSocket serverSocket = new ServerSocket(0)) {
          try (Transceiver t = new NettyTransceiver(new InetSocketAddress(serverSocket.getLocalPort()), 0, c -> {
            channel = c;
          })) {
            fail("should have thrown an exception");
          }
        } finally {
          assertTrue(channel == null || channel.isShutdown(), "Channel not shut down");
        }
      });
    }
  }
  