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.utils.concurrent;
  
  import java.util.ArrayList;
  import java.util.List;
  import java.util.Objects;
  import java.util.concurrent.ExecutorService;
  import java.util.concurrent.Executors;
  import java.util.concurrent.TimeUnit;
  import java.util.function.Predicate;
  
  import org.junit.Assert;
  
  import io.netty.util.concurrent.Promise;
  import net.openhft.chronicle.core.util.ThrowingBiConsumer;
  import net.openhft.chronicle.core.util.ThrowingConsumer;
  import net.openhft.chronicle.core.util.ThrowingFunction;
  
  public abstract class AbstractTestPromise
  {
      protected final ExecutorService exec = Executors.newCachedThreadPool();
  
      class Async
      {
          final List<ThrowingBiConsumer<Long, TimeUnit, ?>> waitingOn = new ArrayList<>();
          void verify()
          {
              for (int i = 0 ; i < waitingOn.size() ; ++i)
              {
                  try
                  {
                      waitingOn.get(i).accept(1L, TimeUnit.SECONDS);
                  }
                  catch (Throwable t)
                  {
                      throw new AssertionError(i + ": " + waitingOn.get(i), t);
                  }
              }
          }
          <V> void failure(Promise<V> promise, ThrowingConsumer<Promise<V>, ?> action, Throwable failsWith)
          {
              waitingOn.add(exec.submit(() -> AbstractTestPromise.failure(promise, action, failsWith))::get);
          }
          <V> void failure(Promise<V> promise, ThrowingConsumer<Promise<V>, ?> action, Class<? extends Throwable> failsWith)
          {
              waitingOn.add(exec.submit(() -> AbstractTestPromise.failure(promise, action, failsWith))::get);
          }
          <V> void failure(Promise<V> promise, ThrowingConsumer<Promise<V>, ?> action, Predicate<Throwable> failsWith)
          {
              waitingOn.add(exec.submit(() -> AbstractTestPromise.failure(promise, action, failsWith))::get);
          }
          <P extends Promise<?>, R> void success(P promise, ThrowingFunction<P, R, ?> action, R result)
          {
              waitingOn.add(exec.submit(() -> AbstractTestPromise.success(promise, action, result))::get);
          }
      }
  
      private static <V> void failure(Promise<V> promise, ThrowingConsumer<Promise<V>, ?> action, Throwable failsWith)
      {
          failure(promise, action, t -> Objects.equals(failsWith, t));
      }
  
      static <V> void failure(Promise<V> promise, ThrowingConsumer<Promise<V>, ?> action, Class<? extends Throwable> failsWith)
      {
          failure(promise, action, failsWith::isInstance);
      }
  
      private static <V> void failure(Promise<V> promise, ThrowingConsumer<Promise<V>, ?> action, Predicate<Throwable> failsWith)
      {
          Throwable fail = null;
          try
          {
              action.accept(promise);
          }
          catch (Throwable t)
          {
              fail = t;
          }
          if (!failsWith.test(fail))
              throw new AssertionError(fail);
      }
  
      static <P extends Promise<?>, R> void success(P promise, ThrowingFunction<P, R, ?> action, R result)
      {
          try
          {
              Assert.assertEquals(result, action.apply(promise));
          }
          catch (Throwable t)
          {
              throw new AssertionError(t);
          }
      }
  
  }
  