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 com.datastax.oss.driver.internal.core.channel;
  
  import static com.datastax.oss.driver.Assertions.assertThat;
  
  import io.netty.channel.ChannelFuture;
  import io.netty.channel.ChannelHandlerContext;
  import java.net.InetSocketAddress;
  import org.junit.Before;
  import org.junit.Test;
  
  public class ConnectInitHandlerTest extends ChannelHandlerTestBase {
  
    private TestHandler handler;
  
    @Before
    @Override
    public void setup() {
      super.setup();
      handler = new TestHandler();
      channel.pipeline().addLast(handler);
    }
  
    @Test
    public void should_call_onRealConnect_when_connection_succeeds() {
      assertThat(handler.hasConnected).isFalse();
  
      // When
      channel.connect(new InetSocketAddress("localhost", 9042));
  
      // Then
      assertThat(handler.hasConnected).isTrue();
    }
  
    @Test
    public void should_not_complete_connect_future_before_triggered_by_handler() {
      // When
      ChannelFuture connectFuture = channel.connect(new InetSocketAddress("localhost", 9042));
  
      // Then
      assertThat(connectFuture.isDone()).isFalse();
    }
  
    @Test
    public void should_complete_connect_future_when_handler_completes() {
      // Given
      ChannelFuture connectFuture = channel.connect(new InetSocketAddress("localhost", 9042));
  
      // When
      handler.setConnectSuccess();
  
      // Then
      assertThat(connectFuture.isSuccess()).isTrue();
    }
  
    @Test
    public void should_remove_handler_from_pipeline_when_handler_completes() {
      // Given
      channel.connect(new InetSocketAddress("localhost", 9042));
  
      // When
      handler.setConnectSuccess();
  
      // Then
      assertThat(channel.pipeline().get(TestHandler.class)).isNull();
    }
  
    @Test
    public void should_fail_connect_future_when_handler_fails() {
      // Given
      ChannelFuture connectFuture = channel.connect(new InetSocketAddress("localhost", 9042));
      Exception exception = new Exception("test");
  
      // When
      handler.setConnectFailure(exception);
  
      // Then
      assertThat(connectFuture).isFailed(e -> assertThat(e).isEqualTo(exception));
    }
  
    /**
     * Well-behaved implementations should not call setConnect* multiple times in a row, but check
     * that we handle it gracefully if they do.
     */
    @Test
    public void should_ignore_subsequent_calls_if_handler_already_failed() {
      // Given
      ChannelFuture connectFuture = channel.connect(new InetSocketAddress("localhost", 9042));
      Exception exception = new Exception("test");
  
      // When
      handler.setConnectFailure(exception);
      handler.setConnectFailure(new Exception("test2"));
      handler.setConnectSuccess();
  
      // Then
      assertThat(connectFuture).isFailed(e -> assertThat(e).isEqualTo(exception));
    }
  
    static class TestHandler extends ConnectInitHandler {
      boolean hasConnected;
  
      @Override
      protected void onRealConnect(ChannelHandlerContext ctx) {
        hasConnected = true;
      }
    }
  }
  