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.subscribers;
  
  import static org.junit.Assert.*;
  
  import java.util.*;
  
  import org.junit.Test;
  import org.reactivestreams.*;
  
  import io.reactivex.rxjava3.core.*;
  import io.reactivex.rxjava3.exceptions.*;
  import io.reactivex.rxjava3.functions.*;
  import io.reactivex.rxjava3.internal.functions.Functions;
  import io.reactivex.rxjava3.internal.subscriptions.BooleanSubscription;
  import io.reactivex.rxjava3.plugins.RxJavaPlugins;
  import io.reactivex.rxjava3.processors.PublishProcessor;
  import io.reactivex.rxjava3.testsupport.*;
  
  public class BoundedSubscriberTest extends RxJavaTest {
  
      @Test
      public void onSubscribeThrows() {
          final List<Object> received = new ArrayList<>();
  
          BoundedSubscriber<Object> subscriber = new BoundedSubscriber<>(new Consumer<Object>() {
              @Override
              public void accept(Object o) throws Exception {
                  received.add(o);
              }
          }, new Consumer<Throwable>() {
              @Override
              public void accept(Throwable throwable) throws Exception {
                  received.add(throwable);
              }
          }, new Action() {
              @Override
              public void run() throws Exception {
                  received.add(1);
              }
          }, new Consumer<Subscription>() {
              @Override
              public void accept(Subscription subscription) throws Exception {
                  throw new TestException();
              }
          }, 128);
  
          assertFalse(subscriber.isDisposed());
  
          Flowable.just(1).subscribe(subscriber);
  
          assertTrue(received.toString(), received.get(0) instanceof TestException);
          assertEquals(received.toString(), 1, received.size());
  
          assertTrue(subscriber.isDisposed());
      }
  
      @Test
      public void onNextThrows() {
          final List<Object> received = new ArrayList<>();
  
          BoundedSubscriber<Object> subscriber = new BoundedSubscriber<>(new Consumer<Object>() {
              @Override
              public void accept(Object o) throws Exception {
                  throw new TestException();
              }
          }, new Consumer<Throwable>() {
              @Override
              public void accept(Throwable throwable) throws Exception {
                  received.add(throwable);
              }
          }, new Action() {
              @Override
              public void run() throws Exception {
                  received.add(1);
              }
          }, new Consumer<Subscription>() {
              @Override
              public void accept(Subscription subscription) throws Exception {
                  subscription.request(128);
              }
          }, 128);
  
          assertFalse(subscriber.isDisposed());
  
          Flowable.just(1).subscribe(subscriber);
  
          assertTrue(received.toString(), received.get(0) instanceof TestException);
          assertEquals(received.toString(), 1, received.size());
  
          assertTrue(subscriber.isDisposed());
      }
  
      @Test
      public void onErrorThrows() {
          List<Throwable> errors = TestHelper.trackPluginErrors();
  
          try {
              final List<Object> received = new ArrayList<>();
  
              BoundedSubscriber<Object> subscriber = new BoundedSubscriber<>(new Consumer<Object>() {
                  @Override
                  public void accept(Object o) throws Exception {
                      received.add(o);
                  }
              }, new Consumer<Throwable>() {
                  @Override
                  public void accept(Throwable throwable) throws Exception {
                      throw new TestException("Inner");
                  }
              }, new Action() {
                  @Override
                  public void run() throws Exception {
                      received.add(1);
                  }
              }, new Consumer<Subscription>() {
                  @Override
                  public void accept(Subscription subscription) throws Exception {
                      subscription.request(128);
                  }
              }, 128);
  
              assertFalse(subscriber.isDisposed());
  
              Flowable.<Integer>error(new TestException("Outer")).subscribe(subscriber);
  
              assertTrue(received.toString(), received.isEmpty());
  
              assertTrue(subscriber.isDisposed());
  
              TestHelper.assertError(errors, 0, CompositeException.class);
              List<Throwable> ce = TestHelper.compositeList(errors.get(0));
              TestHelper.assertError(ce, 0, TestException.class, "Outer");
              TestHelper.assertError(ce, 1, TestException.class, "Inner");
          } finally {
              RxJavaPlugins.reset();
          }
      }
  
      @Test
      public void onCompleteThrows() {
          List<Throwable> errors = TestHelper.trackPluginErrors();
  
          try {
              final List<Object> received = new ArrayList<>();
  
              BoundedSubscriber<Object> subscriber = new BoundedSubscriber<>(new Consumer<Object>() {
                  @Override
                  public void accept(Object o) throws Exception {
                      received.add(o);
                  }
              }, new Consumer<Throwable>() {
                  @Override
                  public void accept(Throwable throwable) throws Exception {
                      received.add(throwable);
                  }
              }, new Action() {
                  @Override
                  public void run() throws Exception {
                      throw new TestException();
                  }
              }, new Consumer<Subscription>() {
                  @Override
                  public void accept(Subscription subscription) throws Exception {
                      subscription.request(128);
                  }
              }, 128);
  
              assertFalse(subscriber.isDisposed());
  
              Flowable.<Integer>empty().subscribe(subscriber);
  
              assertTrue(received.toString(), received.isEmpty());
  
              assertTrue(subscriber.isDisposed());
  
              TestHelper.assertUndeliverable(errors, 0, TestException.class);
          } finally {
              RxJavaPlugins.reset();
          }
      }
  
      @Test
      public void onNextThrowsCancelsUpstream() {
          PublishProcessor<Integer> pp = PublishProcessor.create();
  
          final List<Throwable> errors = new ArrayList<>();
  
          BoundedSubscriber<Integer> s = new BoundedSubscriber<>(new Consumer<Integer>() {
              @Override
              public void accept(Integer v) throws Exception {
                  throw new TestException();
              }
          }, new Consumer<Throwable>() {
              @Override
              public void accept(Throwable e) throws Exception {
                  errors.add(e);
              }
          }, new Action() {
              @Override
              public void run() throws Exception {
  
              }
          }, new Consumer<Subscription>() {
              @Override
              public void accept(Subscription subscription) throws Exception {
                  subscription.request(128);
              }
          }, 128);
  
          pp.subscribe(s);
  
          assertTrue("No observers?!", pp.hasSubscribers());
          assertTrue("Has errors already?!", errors.isEmpty());
  
          pp.onNext(1);
  
          assertFalse("Has observers?!", pp.hasSubscribers());
          assertFalse("No errors?!", errors.isEmpty());
  
          assertTrue(errors.toString(), errors.get(0) instanceof TestException);
      }
  
      @Test
      public void onSubscribeThrowsCancelsUpstream() {
          PublishProcessor<Integer> pp = PublishProcessor.create();
  
          final List<Throwable> errors = new ArrayList<>();
  
          BoundedSubscriber<Integer> s = new BoundedSubscriber<>(new Consumer<Integer>() {
              @Override
              public void accept(Integer v) throws Exception {
              }
          }, new Consumer<Throwable>() {
              @Override
              public void accept(Throwable e) throws Exception {
                  errors.add(e);
              }
          }, new Action() {
              @Override
              public void run() throws Exception {
              }
          }, new Consumer<Subscription>() {
              @Override
              public void accept(Subscription s) throws Exception {
                  throw new TestException();
              }
          }, 128);
  
          pp.subscribe(s);
  
          assertFalse("Has observers?!", pp.hasSubscribers());
          assertFalse("No errors?!", errors.isEmpty());
  
          assertTrue(errors.toString(), errors.get(0) instanceof TestException);
      }
  
      @Test
      public void badSourceOnSubscribe() {
          Flowable<Integer> source = Flowable.fromPublisher(new Publisher<Integer>() {
              @Override
              public void subscribe(Subscriber<? super Integer> s) {
                  BooleanSubscription s1 = new BooleanSubscription();
                  s.onSubscribe(s1);
                  BooleanSubscription s2 = new BooleanSubscription();
                  s.onSubscribe(s2);
  
                  assertFalse(s1.isCancelled());
                  assertTrue(s2.isCancelled());
  
                  s.onNext(1);
                  s.onComplete();
              }
          });
  
          final List<Object> received = new ArrayList<>();
  
          BoundedSubscriber<Object> subscriber = new BoundedSubscriber<>(new Consumer<Object>() {
              @Override
              public void accept(Object v) throws Exception {
                  received.add(v);
              }
          }, new Consumer<Throwable>() {
              @Override
              public void accept(Throwable e) throws Exception {
                  received.add(e);
              }
          }, new Action() {
              @Override
              public void run() throws Exception {
                  received.add(100);
              }
          }, new Consumer<Subscription>() {
              @Override
              public void accept(Subscription s) throws Exception {
                  s.request(128);
              }
          }, 128);
  
          source.subscribe(subscriber);
  
          assertEquals(Arrays.asList(1, 100), received);
      }
  
      @Test
      @SuppressUndeliverable
      public void badSourceEmitAfterDone() {
          Flowable<Integer> source = Flowable.fromPublisher(new Publisher<Integer>() {
              @Override
              public void subscribe(Subscriber<? super Integer> s) {
                  BooleanSubscription s1 = new BooleanSubscription();
                  s.onSubscribe(s1);
  
                  s.onNext(1);
                  s.onComplete();
                  s.onNext(2);
                  s.onError(new TestException());
                  s.onComplete();
              }
          });
  
          final List<Object> received = new ArrayList<>();
  
          BoundedSubscriber<Object> subscriber = new BoundedSubscriber<>(new Consumer<Object>() {
              @Override
              public void accept(Object v) throws Exception {
                  received.add(v);
              }
          }, new Consumer<Throwable>() {
              @Override
              public void accept(Throwable e) throws Exception {
                  received.add(e);
              }
          }, new Action() {
              @Override
              public void run() throws Exception {
                  received.add(100);
              }
          }, new Consumer<Subscription>() {
              @Override
              public void accept(Subscription s) throws Exception {
                  s.request(128);
              }
          }, 128);
  
          source.subscribe(subscriber);
  
          assertEquals(Arrays.asList(1, 100), received);
      }
  
      @Test
      public void onErrorMissingShouldReportNoCustomOnError() {
          BoundedSubscriber<Integer> subscriber = new BoundedSubscriber<>(Functions.<Integer>emptyConsumer(),
                  Functions.ON_ERROR_MISSING,
                  Functions.EMPTY_ACTION,
                  Functions.<Subscription>boundedConsumer(128), 128);
  
          assertFalse(subscriber.hasCustomOnError());
      }
  
      @Test
      public void customOnErrorShouldReportCustomOnError() {
          BoundedSubscriber<Integer> subscriber = new BoundedSubscriber<>(Functions.<Integer>emptyConsumer(),
                  Functions.<Throwable>emptyConsumer(),
                  Functions.EMPTY_ACTION,
                  Functions.<Subscription>boundedConsumer(128), 128);
  
          assertTrue(subscriber.hasCustomOnError());
      }
  
      @Test
      public void cancel() {
          BoundedSubscriber<Integer> subscriber = new BoundedSubscriber<>(Functions.<Integer>emptyConsumer(),
                  Functions.<Throwable>emptyConsumer(),
                  Functions.EMPTY_ACTION,
                  Functions.<Subscription>boundedConsumer(128), 128);
  
          BooleanSubscription bs = new BooleanSubscription();
          subscriber.onSubscribe(bs);
  
          subscriber.cancel();
  
          assertTrue(bs.isCancelled());
      }
  
      @Test
      public void dispose() {
          BoundedSubscriber<Integer> subscriber = new BoundedSubscriber<>(Functions.<Integer>emptyConsumer(),
                  Functions.<Throwable>emptyConsumer(),
                  Functions.EMPTY_ACTION,
                  Functions.<Subscription>boundedConsumer(128), 128);
  
          BooleanSubscription bs = new BooleanSubscription();
          subscriber.onSubscribe(bs);
  
          assertFalse(subscriber.isDisposed());
  
          subscriber.dispose();
  
          assertTrue(bs.isCancelled());
          assertTrue(subscriber.isDisposed());
      }
  }
  