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.single;
  
  import static org.junit.Assert.*;
  
  import java.util.List;
  import java.util.concurrent.CancellationException;
  
  import org.junit.Test;
  import org.reactivestreams.Subscriber;
  
  import io.reactivex.rxjava3.core.*;
  import io.reactivex.rxjava3.exceptions.TestException;
  import io.reactivex.rxjava3.internal.subscriptions.BooleanSubscription;
  import io.reactivex.rxjava3.observers.TestObserver;
  import io.reactivex.rxjava3.plugins.RxJavaPlugins;
  import io.reactivex.rxjava3.processors.PublishProcessor;
  import io.reactivex.rxjava3.subjects.*;
  import io.reactivex.rxjava3.testsupport.TestHelper;
  
  public class SingleTakeUntilTest extends RxJavaTest {
  
      @Test
      public void mainSuccessPublisher() {
          PublishProcessor<Integer> pp = PublishProcessor.create();
          PublishProcessor<Integer> source = PublishProcessor.create();
  
          TestObserver<Integer> to = source.single(-99).takeUntil(pp)
          .test();
  
          source.onNext(1);
          source.onComplete();
  
          to.assertResult(1);
      }
  
      @Test
      public void mainSuccessSingle() {
          PublishProcessor<Integer> pp = PublishProcessor.create();
          PublishProcessor<Integer> source = PublishProcessor.create();
  
          TestObserver<Integer> to = source.single(-99).takeUntil(pp.single(-99))
          .test();
  
          source.onNext(1);
          source.onComplete();
  
          to.assertResult(1);
      }
  
      @Test
      public void mainSuccessCompletable() {
          PublishProcessor<Integer> pp = PublishProcessor.create();
          PublishProcessor<Integer> source = PublishProcessor.create();
  
          TestObserver<Integer> to = source.single(-99).takeUntil(pp.ignoreElements())
          .test();
  
          source.onNext(1);
          source.onComplete();
  
          to.assertResult(1);
      }
  
      @Test
      public void mainErrorPublisher() {
          PublishProcessor<Integer> pp = PublishProcessor.create();
          PublishProcessor<Integer> source = PublishProcessor.create();
  
          TestObserver<Integer> to = source.single(-99).takeUntil(pp)
          .test();
  
          source.onError(new TestException());
  
          to.assertFailure(TestException.class);
      }
  
      @Test
      public void mainErrorSingle() {
          PublishProcessor<Integer> pp = PublishProcessor.create();
          PublishProcessor<Integer> source = PublishProcessor.create();
  
          TestObserver<Integer> to = source.single(-99).takeUntil(pp.single(-99))
          .test();
  
          source.onError(new TestException());
  
          to.assertFailure(TestException.class);
      }
  
      @Test
      public void mainErrorCompletable() {
          PublishProcessor<Integer> pp = PublishProcessor.create();
          PublishProcessor<Integer> source = PublishProcessor.create();
  
          TestObserver<Integer> to = source.single(-99).takeUntil(pp.ignoreElements())
          .test();
  
          source.onError(new TestException());
  
          to.assertFailure(TestException.class);
      }
  
      @Test
      public void otherOnNextPublisher() {
          PublishProcessor<Integer> pp = PublishProcessor.create();
          PublishProcessor<Integer> source = PublishProcessor.create();
  
          TestObserver<Integer> to = source.single(-99).takeUntil(pp)
          .test();
  
          pp.onNext(1);
  
          to.assertFailure(CancellationException.class);
      }
  
      @Test
      public void otherOnNextSingle() {
          PublishProcessor<Integer> pp = PublishProcessor.create();
          PublishProcessor<Integer> source = PublishProcessor.create();
  
          TestObserver<Integer> to = source.single(-99).takeUntil(pp.single(-99))
          .test();
  
          pp.onNext(1);
          pp.onComplete();
  
          to.assertFailure(CancellationException.class);
      }
  
      @Test
      public void otherOnNextCompletable() {
          PublishProcessor<Integer> pp = PublishProcessor.create();
          PublishProcessor<Integer> source = PublishProcessor.create();
  
          TestObserver<Integer> to = source.single(-99).takeUntil(pp.ignoreElements())
          .test();
  
          pp.onNext(1);
          pp.onComplete();
  
          to.assertFailure(CancellationException.class);
      }
  
      @Test
      public void otherOnCompletePublisher() {
          PublishProcessor<Integer> pp = PublishProcessor.create();
          PublishProcessor<Integer> source = PublishProcessor.create();
  
          TestObserver<Integer> to = source.single(-99).takeUntil(pp)
          .test();
  
          pp.onComplete();
  
          to.assertFailure(CancellationException.class);
      }
  
      @Test
      public void otherOnCompleteCompletable() {
          PublishProcessor<Integer> pp = PublishProcessor.create();
          PublishProcessor<Integer> source = PublishProcessor.create();
  
          TestObserver<Integer> to = source.single(-99).takeUntil(pp.ignoreElements())
          .test();
  
          pp.onComplete();
  
          to.assertFailure(CancellationException.class);
      }
  
      @Test
      public void otherErrorPublisher() {
          PublishProcessor<Integer> pp = PublishProcessor.create();
          PublishProcessor<Integer> source = PublishProcessor.create();
  
          TestObserver<Integer> to = source.single(-99).takeUntil(pp)
          .test();
  
          pp.onError(new TestException());
  
          to.assertFailure(TestException.class);
      }
  
      @Test
      public void otherErrorSingle() {
          PublishProcessor<Integer> pp = PublishProcessor.create();
          PublishProcessor<Integer> source = PublishProcessor.create();
  
          TestObserver<Integer> to = source.single(-99).takeUntil(pp.single(-99))
          .test();
  
          pp.onError(new TestException());
  
          to.assertFailure(TestException.class);
      }
  
      @Test
      public void otherErrorCompletable() {
          PublishProcessor<Integer> pp = PublishProcessor.create();
          PublishProcessor<Integer> source = PublishProcessor.create();
  
          TestObserver<Integer> to = source.single(-99).takeUntil(pp.ignoreElements())
          .test();
  
          pp.onError(new TestException());
  
          to.assertFailure(TestException.class);
      }
  
      @Test
      public void withPublisherDispose() {
          TestHelper.checkDisposed(Single.never().takeUntil(Flowable.never()));
      }
  
      @Test
      public void onErrorRace() {
          for (int i = 0; i < TestHelper.RACE_DEFAULT_LOOPS; i++) {
              List<Throwable> errors = TestHelper.trackPluginErrors();
  
              try {
                  final PublishProcessor<Integer> pp1 = PublishProcessor.create();
                  final PublishProcessor<Integer> pp2 = PublishProcessor.create();
  
                  TestObserver<Integer> to = pp1.singleOrError().takeUntil(pp2).test();
  
                  final TestException ex = new TestException();
  
                  Runnable r1 = new Runnable() {
                      @Override
                      public void run() {
                          pp1.onError(ex);
                      }
                  };
  
                  Runnable r2 = new Runnable() {
                      @Override
                      public void run() {
                          pp2.onError(ex);
                      }
                  };
  
                  TestHelper.race(r1, r2);
  
                  to.assertFailure(TestException.class);
  
                  if (!errors.isEmpty()) {
                      TestHelper.assertUndeliverable(errors, 0, TestException.class);
                  }
              } finally {
                  RxJavaPlugins.reset();
              }
          }
      }
  
      @Test
      public void otherSignalsAndCompletes() {
          List<Throwable> errors = TestHelper.trackPluginErrors();
          try {
              Single.just(1).takeUntil(Flowable.just(1).take(1))
              .test()
              .assertFailure(CancellationException.class);
  
              assertTrue(errors.toString(), errors.isEmpty());
          } finally {
              RxJavaPlugins.reset();
          }
      }
  
      @Test
      public void flowableCancelDelayed() {
          Single.never()
          .takeUntil(new Flowable<Integer>() {
              @Override
              protected void subscribeActual(Subscriber<? super Integer> s) {
                  s.onSubscribe(new BooleanSubscription());
                  s.onNext(1);
                  s.onNext(2);
              }
          })
          .test()
          .assertFailure(CancellationException.class);
      }
  
      @Test
      public void untilSingleMainSuccess() {
          SingleSubject<Integer> main = SingleSubject.create();
          SingleSubject<Integer> other = SingleSubject.create();
  
          TestObserver<Integer> to = main.takeUntil(other).test();
  
          assertTrue("Main no observers?", main.hasObservers());
          assertTrue("Other no observers?", other.hasObservers());
  
          main.onSuccess(1);
  
          assertFalse("Main has observers?", main.hasObservers());
          assertFalse("Other has observers?", other.hasObservers());
  
          to.assertResult(1);
      }
  
      @Test
      public void untilSingleMainError() {
          SingleSubject<Integer> main = SingleSubject.create();
          SingleSubject<Integer> other = SingleSubject.create();
  
          TestObserver<Integer> to = main.takeUntil(other).test();
  
          assertTrue("Main no observers?", main.hasObservers());
          assertTrue("Other no observers?", other.hasObservers());
  
          main.onError(new TestException());
  
          assertFalse("Main has observers?", main.hasObservers());
          assertFalse("Other has observers?", other.hasObservers());
  
          to.assertFailure(TestException.class);
      }
  
      @Test
      public void untilSingleOtherSuccess() {
          SingleSubject<Integer> main = SingleSubject.create();
          SingleSubject<Integer> other = SingleSubject.create();
  
          TestObserver<Integer> to = main.takeUntil(other).test();
  
          assertTrue("Main no observers?", main.hasObservers());
          assertTrue("Other no observers?", other.hasObservers());
  
          other.onSuccess(1);
  
          assertFalse("Main has observers?", main.hasObservers());
          assertFalse("Other has observers?", other.hasObservers());
  
          to.assertFailure(CancellationException.class);
      }
  
      @Test
      public void untilSingleOtherError() {
          SingleSubject<Integer> main = SingleSubject.create();
          SingleSubject<Integer> other = SingleSubject.create();
  
          TestObserver<Integer> to = main.takeUntil(other).test();
  
          assertTrue("Main no observers?", main.hasObservers());
          assertTrue("Other no observers?", other.hasObservers());
  
          other.onError(new TestException());
  
          assertFalse("Main has observers?", main.hasObservers());
          assertFalse("Other has observers?", other.hasObservers());
  
          to.assertFailure(TestException.class);
      }
  
      @Test
      public void untilSingleDispose() {
          SingleSubject<Integer> main = SingleSubject.create();
          SingleSubject<Integer> other = SingleSubject.create();
  
          TestObserver<Integer> to = main.takeUntil(other).test();
  
          assertTrue("Main no observers?", main.hasObservers());
          assertTrue("Other no observers?", other.hasObservers());
  
          to.dispose();
  
          assertFalse("Main has observers?", main.hasObservers());
          assertFalse("Other has observers?", other.hasObservers());
  
          to.assertEmpty();
      }
  
      @Test
      public void untilPublisherMainSuccess() {
          SingleSubject<Integer> main = SingleSubject.create();
          PublishProcessor<Integer> other = PublishProcessor.create();
  
          TestObserver<Integer> to = main.takeUntil(other).test();
  
          assertTrue("Main no observers?", main.hasObservers());
          assertTrue("Other no observers?", other.hasSubscribers());
  
          main.onSuccess(1);
  
          assertFalse("Main has observers?", main.hasObservers());
          assertFalse("Other has observers?", other.hasSubscribers());
  
          to.assertResult(1);
      }
  
      @Test
      public void untilPublisherMainError() {
          SingleSubject<Integer> main = SingleSubject.create();
          PublishProcessor<Integer> other = PublishProcessor.create();
  
          TestObserver<Integer> to = main.takeUntil(other).test();
  
          assertTrue("Main no observers?", main.hasObservers());
          assertTrue("Other no observers?", other.hasSubscribers());
  
          main.onError(new TestException());
  
          assertFalse("Main has observers?", main.hasObservers());
          assertFalse("Other has observers?", other.hasSubscribers());
  
          to.assertFailure(TestException.class);
      }
  
      @Test
      public void untilPublisherOtherOnNext() {
          SingleSubject<Integer> main = SingleSubject.create();
          PublishProcessor<Integer> other = PublishProcessor.create();
  
          TestObserver<Integer> to = main.takeUntil(other).test();
  
          assertTrue("Main no observers?", main.hasObservers());
          assertTrue("Other no observers?", other.hasSubscribers());
  
          other.onNext(1);
  
          assertFalse("Main has observers?", main.hasObservers());
          assertFalse("Other has observers?", other.hasSubscribers());
  
          to.assertFailure(CancellationException.class);
      }
  
      @Test
      public void untilPublisherOtherOnComplete() {
          SingleSubject<Integer> main = SingleSubject.create();
          PublishProcessor<Integer> other = PublishProcessor.create();
  
          TestObserver<Integer> to = main.takeUntil(other).test();
  
          assertTrue("Main no observers?", main.hasObservers());
          assertTrue("Other no observers?", other.hasSubscribers());
  
          other.onComplete();
  
          assertFalse("Main has observers?", main.hasObservers());
          assertFalse("Other has observers?", other.hasSubscribers());
  
          to.assertFailure(CancellationException.class);
      }
  
      @Test
      public void untilPublisherOtherError() {
          SingleSubject<Integer> main = SingleSubject.create();
          PublishProcessor<Integer> other = PublishProcessor.create();
  
          TestObserver<Integer> to = main.takeUntil(other).test();
  
          assertTrue("Main no observers?", main.hasObservers());
          assertTrue("Other no observers?", other.hasSubscribers());
  
          other.onError(new TestException());
  
          assertFalse("Main has observers?", main.hasObservers());
          assertFalse("Other has observers?", other.hasSubscribers());
  
          to.assertFailure(TestException.class);
      }
  
      @Test
      public void untilPublisherDispose() {
          SingleSubject<Integer> main = SingleSubject.create();
          PublishProcessor<Integer> other = PublishProcessor.create();
  
          TestObserver<Integer> to = main.takeUntil(other).test();
  
          assertTrue("Main no observers?", main.hasObservers());
          assertTrue("Other no observers?", other.hasSubscribers());
  
          to.dispose();
  
          assertFalse("Main has observers?", main.hasObservers());
          assertFalse("Other has observers?", other.hasSubscribers());
  
          to.assertEmpty();
      }
  
      @Test
      public void untilCompletableMainSuccess() {
          SingleSubject<Integer> main = SingleSubject.create();
          CompletableSubject other = CompletableSubject.create();
  
          TestObserver<Integer> to = main.takeUntil(other).test();
  
          assertTrue("Main no observers?", main.hasObservers());
          assertTrue("Other no observers?", other.hasObservers());
  
          main.onSuccess(1);
  
          assertFalse("Main has observers?", main.hasObservers());
          assertFalse("Other has observers?", other.hasObservers());
  
          to.assertResult(1);
      }
  
      @Test
      public void untilCompletableMainError() {
          SingleSubject<Integer> main = SingleSubject.create();
          CompletableSubject other = CompletableSubject.create();
  
          TestObserver<Integer> to = main.takeUntil(other).test();
  
          assertTrue("Main no observers?", main.hasObservers());
          assertTrue("Other no observers?", other.hasObservers());
  
          main.onError(new TestException());
  
          assertFalse("Main has observers?", main.hasObservers());
          assertFalse("Other has observers?", other.hasObservers());
  
          to.assertFailure(TestException.class);
      }
  
      @Test
      public void untilCompletableOtherOnComplete() {
          SingleSubject<Integer> main = SingleSubject.create();
          CompletableSubject other = CompletableSubject.create();
  
          TestObserver<Integer> to = main.takeUntil(other).test();
  
          assertTrue("Main no observers?", main.hasObservers());
          assertTrue("Other no observers?", other.hasObservers());
  
          other.onComplete();
  
          assertFalse("Main has observers?", main.hasObservers());
          assertFalse("Other has observers?", other.hasObservers());
  
          to.assertFailure(CancellationException.class);
      }
  
      @Test
      public void untilCompletableOtherError() {
          SingleSubject<Integer> main = SingleSubject.create();
          CompletableSubject other = CompletableSubject.create();
  
          TestObserver<Integer> to = main.takeUntil(other).test();
  
          assertTrue("Main no observers?", main.hasObservers());
          assertTrue("Other no observers?", other.hasObservers());
  
          other.onError(new TestException());
  
          assertFalse("Main has observers?", main.hasObservers());
          assertFalse("Other has observers?", other.hasObservers());
  
          to.assertFailure(TestException.class);
      }
  
      @Test
      public void untilCompletableDispose() {
          SingleSubject<Integer> main = SingleSubject.create();
          CompletableSubject other = CompletableSubject.create();
  
          TestObserver<Integer> to = main.takeUntil(other).test();
  
          assertTrue("Main no observers?", main.hasObservers());
          assertTrue("Other no observers?", other.hasObservers());
  
          to.dispose();
  
          assertFalse("Main has observers?", main.hasObservers());
          assertFalse("Other has observers?", other.hasObservers());
  
          to.assertEmpty();
      }
  }
  