code: /*
   * Copyright (c) 2016-present, RxJava Contributors.
   *
   * Licensed 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 io.reactivex.rxjava3.internal.operators.completable;
  
  import static org.junit.Assert.*;
  
  import java.util.List;
  import java.util.concurrent.atomic.AtomicBoolean;
  
  import org.junit.Test;
  
  import io.reactivex.rxjava3.core.*;
  import io.reactivex.rxjava3.disposables.*;
  import io.reactivex.rxjava3.exceptions.*;
  import io.reactivex.rxjava3.functions.*;
  import io.reactivex.rxjava3.plugins.RxJavaPlugins;
  import io.reactivex.rxjava3.testsupport.*;
  
  public class CompletableDoOnTest extends RxJavaTest {
  
      @Test
      public void successAcceptThrows() {
          Completable.complete().doOnEvent(new Consumer<Throwable>() {
              @Override
              public void accept(Throwable e) throws Exception {
                  throw new TestException();
              }
          })
          .test()
          .assertFailure(TestException.class);
      }
  
      @Test
      public void errorAcceptThrows() {
          TestObserverEx<Void> to = Completable.error(new TestException("Outer")).doOnEvent(new Consumer<Throwable>() {
              @Override
              public void accept(Throwable e) throws Exception {
                  throw new TestException("Inner");
              }
          })
          .to(TestHelper.<Void>testConsumer())
          .assertFailure(CompositeException.class);
  
          List<Throwable> errors = TestHelper.compositeList(to.errors().get(0));
  
          TestHelper.assertError(errors, 0, TestException.class, "Outer");
          TestHelper.assertError(errors, 1, TestException.class, "Inner");
      }
  
      @Test
      public void doOnDisposeCalled() {
          final AtomicBoolean atomicBoolean = new AtomicBoolean();
  
          assertFalse(atomicBoolean.get());
  
          Completable.complete()
              .doOnDispose(new Action() {
                  @Override
                  public void run() throws Exception {
                      atomicBoolean.set(true);
                  }
              })
              .test()
              .assertResult()
              .dispose();
  
          assertTrue(atomicBoolean.get());
      }
  
      @Test
      public void onSubscribeCrash() {
          List<Throwable> errors = TestHelper.trackPluginErrors();
          try {
              final Disposable bs = Disposable.empty();
  
              new Completable() {
                  @Override
                  protected void subscribeActual(CompletableObserver observer) {
                      observer.onSubscribe(bs);
                      observer.onError(new TestException("Second"));
                      observer.onComplete();
                  }
              }
              .doOnSubscribe(new Consumer<Disposable>() {
                  @Override
                  public void accept(Disposable d) throws Exception {
                      throw new TestException("First");
                  }
              })
              .to(TestHelper.<Void>testConsumer())
              .assertFailureAndMessage(TestException.class, "First");
  
              assertTrue(bs.isDisposed());
  
              TestHelper.assertUndeliverable(errors, 0, TestException.class, "Second");
          } finally {
              RxJavaPlugins.reset();
          }
      }
  }
  