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.cassandra.net;
  
  import java.util.List;
  import java.util.concurrent.atomic.AtomicInteger;
  import java.util.function.Supplier;
  import java.util.stream.Collectors;
  
  import com.google.common.collect.ImmutableList;
  import org.junit.After;
  import org.junit.Assert;
  import org.junit.Test;
  
  import io.netty.channel.embedded.EmbeddedChannel;
  import org.apache.cassandra.utils.concurrent.AbstractTestAsyncPromise;
  import org.apache.cassandra.utils.concurrent.Promise;
  
  public class AsyncChannelPromiseTest extends AbstractTestAsyncPromise
  {
      @After
      public void shutdown()
      {
          exec.shutdownNow();
      }
  
      private static List<Supplier<Promise<Void>>> suppliers(AtomicInteger listeners, boolean includedUncancellable)
      {
          List<Supplier<Promise<Void>>> cancellable = ImmutableList.of(
              () -> new AsyncChannelPromise(new EmbeddedChannel()),
              () -> AsyncChannelPromise.withListener(new EmbeddedChannel(), f -> listeners.incrementAndGet())
          );
  
          if (!includedUncancellable)
              return cancellable;
  
          return ImmutableList.<Supplier<Promise<Void>>>builder()
                 .addAll(cancellable)
                 .addAll(cancellable.stream().map(s -> (Supplier<Promise<Void>>) () -> cancelSuccess(s.get())).collect(Collectors.toList()))
                 .build();
      }
  
      @Test
      public void testSuccess()
      {
          final AtomicInteger initialListeners = new AtomicInteger();
          List<Supplier<Promise<Void>>> suppliers = suppliers(initialListeners, true);
          for (boolean tryOrSet : new boolean[]{ false, true })
                  for (Supplier<Promise<Void>> supplier : suppliers)
                      testOneSuccess(supplier.get(), tryOrSet, null, null);
          Assert.assertEquals(2 * 2, initialListeners.get());
      }
  
      @Test
      public void testFailure()
      {
          final AtomicInteger initialListeners = new AtomicInteger();
          List<Supplier<Promise<Void>>> suppliers = suppliers(initialListeners, true);
          for (boolean tryOrSet : new boolean[]{ false, true })
              for (Throwable v : new Throwable[] { null, new NullPointerException() })
                  for (Supplier<Promise<Void>> supplier : suppliers)
                      testOneFailure(supplier.get(), tryOrSet, v, null);
          Assert.assertEquals(2 * 2 * 2, initialListeners.get());
      }
  
  
      @Test
      public void testCancellation()
      {
          final AtomicInteger initialListeners = new AtomicInteger();
          List<Supplier<Promise<Void>>> suppliers = suppliers(initialListeners, false);
          for (boolean interruptIfRunning : new boolean[] { true, false })
              for (Supplier<Promise<Void>> supplier : suppliers)
                  testOneCancellation(supplier.get(), interruptIfRunning, null);
          Assert.assertEquals(2, initialListeners.get());
      }
  
  
      @Test
      public void testTimeout()
      {
          final AtomicInteger initialListeners = new AtomicInteger();
          List<Supplier<Promise<Void>>> suppliers = suppliers(initialListeners, true);
          for (Supplier<Promise<Void>> supplier : suppliers)
              testOneTimeout(supplier.get());
          Assert.assertEquals(0, initialListeners.get());
      }
  
  }
  