/*
    * ====================================================================
    * 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.
   * ====================================================================
   *
   * This software consists of voluntary contributions made by many
   * individuals on behalf of the Apache Software Foundation.  For more
   * information on the Apache Software Foundation, please see
   * <http://www.apache.org/>.
   *
   */
  package org.apache.hc.core5.concurrent;
  
  import java.util.concurrent.Future;
  
  import org.hamcrest.CoreMatchers;
  import org.junit.Assert;
  import org.junit.Test;
  
  public class TestComplexFuture {
  
      @Test
      public void testCancelled() throws Exception {
          final ComplexFuture<Object> future = new ComplexFuture<>(null);
  
          final Future<Object> dependency1 = new BasicFuture<>(null);
          future.setDependency(dependency1);
  
          Assert.assertFalse(future.isDone());
  
          future.cancel();
          Assert.assertThat(future.isCancelled(), CoreMatchers.is(true));
          Assert.assertThat(dependency1.isCancelled(), CoreMatchers.is(true));
  
          final Future<Object> dependency2 = new BasicFuture<>(null);
          future.setDependency(dependency2);
          Assert.assertThat(dependency2.isCancelled(), CoreMatchers.is(true));
      }
  
      @Test
      public void testCompleted() throws Exception {
          final ComplexFuture<Object> future = new ComplexFuture<>(null);
  
          final Future<Object> dependency1 = new BasicFuture<>(null);
          future.setDependency(dependency1);
  
          Assert.assertFalse(future.isDone());
  
          future.completed(Boolean.TRUE);
          Assert.assertThat(future.isCancelled(), CoreMatchers.is(false));
          Assert.assertThat(dependency1.isCancelled(), CoreMatchers.is(false));
  
          final Future<Object> dependency2 = new BasicFuture<>(null);
          future.setDependency(dependency2);
          Assert.assertThat(dependency2.isCancelled(), CoreMatchers.is(true));
      }
  
      @Test
      public void testCancelledWithCallback() throws Exception {
          final ComplexFuture<Object> future = new ComplexFuture<>(null);
  
          final Future<Object> dependency1 = new BasicFuture<>(new FutureCallback<Object>() {
  
              @Override
              public void completed(final Object result) {
              }
  
              @Override
              public void failed(final Exception ex) {
                  future.failed(ex);
              }
  
              @Override
              public void cancelled() {
                  future.cancel();
              }
  
          });
          future.setDependency(dependency1);
  
          Assert.assertFalse(future.isDone());
  
          future.cancel();
          Assert.assertThat(future.isCancelled(), CoreMatchers.is(true));
         Assert.assertThat(dependency1.isCancelled(), CoreMatchers.is(true));
 
         final Future<Object> dependency2 = new BasicFuture<>(null);
         future.setDependency(dependency2);
         Assert.assertThat(dependency2.isCancelled(), CoreMatchers.is(true));
     }
 
 }