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 org.junit.Test;
  
  import io.reactivex.rxjava3.core.*;
  import io.reactivex.rxjava3.disposables.Disposable;
  import io.reactivex.rxjava3.exceptions.TestException;
  import io.reactivex.rxjava3.functions.*;
  import io.reactivex.rxjava3.internal.disposables.EmptyDisposable;
  import io.reactivex.rxjava3.observers.TestObserver;
  import io.reactivex.rxjava3.subjects.PublishSubject;
  import io.reactivex.rxjava3.testsupport.TestHelper;
  
  public class CompletableCacheTest extends RxJavaTest implements Consumer<Object>, Action {
  
      volatile int count;
  
      @Override
      public void accept(Object t) throws Exception {
          count++;
      }
  
      @Override
      public void run() throws Exception {
          count++;
      }
  
      @Test
      public void normal() {
          Completable c = Completable.complete()
          .doOnSubscribe(this)
          .cache();
  
          assertEquals(0, count);
  
          c.test().assertResult();
  
          assertEquals(1, count);
  
          c.test().assertResult();
  
          assertEquals(1, count);
  
          c.test().assertResult();
  
          assertEquals(1, count);
      }
  
      @Test
      public void error() {
          Completable c = Completable.error(new TestException())
          .doOnSubscribe(this)
          .cache();
  
          assertEquals(0, count);
  
          c.test().assertFailure(TestException.class);
  
          assertEquals(1, count);
  
          c.test().assertFailure(TestException.class);
  
          assertEquals(1, count);
  
          c.test().assertFailure(TestException.class);
  
          assertEquals(1, count);
      }
  
      @Test
      public void crossDispose() {
          PublishSubject<Integer> ps = PublishSubject.create();
  
          final TestObserver<Void> to1 = new TestObserver<>();
  
          final TestObserver<Void> to2 = new TestObserver<Void>() {
              @Override
              public void onComplete() {
                  super.onComplete();
                  to1.dispose();
              }
          };
  
          Completable c = ps.ignoreElements().cache();
  
          c.subscribe(to2);
          c.subscribe(to1);
  
          ps.onComplete();
  
          to1.assertEmpty();
          to2.assertResult();
      }
  
      @Test
      public void crossDisposeOnError() {
          PublishSubject<Integer> ps = PublishSubject.create();
  
          final TestObserver<Void> to1 = new TestObserver<>();
  
          final TestObserver<Void> to2 = new TestObserver<Void>() {
              @Override
              public void onError(Throwable ex) {
                  super.onError(ex);
                  to1.dispose();
              }
          };
  
          Completable c = ps.ignoreElements().cache();
  
          c.subscribe(to2);
          c.subscribe(to1);
  
          ps.onError(new TestException());
  
          to1.assertEmpty();
          to2.assertFailure(TestException.class);
      }
  
      @Test
      public void dispose() {
          PublishSubject<Integer> ps = PublishSubject.create();
  
          Completable c = ps.ignoreElements().cache();
  
          assertFalse(ps.hasObservers());
  
          TestObserver<Void> to1 = c.test();
  
          assertTrue(ps.hasObservers());
  
          to1.dispose();
  
          assertTrue(ps.hasObservers());
  
          TestObserver<Void> to2 = c.test();
  
          TestObserver<Void> to3 = c.test();
          to3.dispose();
  
          TestObserver<Void> to4 = c.test(true);
          to3.dispose();
  
          ps.onComplete();
  
          to1.assertEmpty();
  
          to2.assertResult();
  
          to3.assertEmpty();
  
          to4.assertEmpty();
      }
  
      @Test
      public void subscribeRace() {
          for (int i = 0; i < TestHelper.RACE_DEFAULT_LOOPS; i++) {
              PublishSubject<Integer> ps = PublishSubject.create();
  
              final Completable c = ps.ignoreElements().cache();
  
              final TestObserver<Void> to1 = new TestObserver<>();
  
              final TestObserver<Void> to2 = new TestObserver<>();
  
              Runnable r1 = new Runnable() {
                  @Override
                  public void run() {
                      c.subscribe(to1);
                  }
              };
              Runnable r2 = new Runnable() {
                  @Override
                  public void run() {
                      c.subscribe(to2);
                  }
              };
  
              TestHelper.race(r1, r2);
  
              ps.onComplete();
  
              to1.assertResult();
              to2.assertResult();
          }
      }
  
      @Test
      public void subscribeDisposeRace() {
          for (int i = 0; i < TestHelper.RACE_DEFAULT_LOOPS; i++) {
              PublishSubject<Integer> ps = PublishSubject.create();
  
              final Completable c = ps.ignoreElements().cache();
  
              final TestObserver<Void> to1 = c.test();
  
              final TestObserver<Void> to2 = new TestObserver<>();
  
              Runnable r1 = new Runnable() {
                  @Override
                  public void run() {
                      to1.dispose();
                  }
              };
              Runnable r2 = new Runnable() {
                  @Override
                  public void run() {
                      c.subscribe(to2);
                  }
              };
  
              TestHelper.race(r1, r2);
  
              ps.onComplete();
  
              to1.assertEmpty();
              to2.assertResult();
          }
      }
  
      @Test
      public void doubleDispose() {
          PublishSubject<Integer> ps = PublishSubject.create();
  
          final TestObserver<Void> to = new TestObserver<>();
  
          ps.ignoreElements().cache()
          .subscribe(new CompletableObserver() {
  
              @Override
              public void onSubscribe(Disposable d) {
                  to.onSubscribe(EmptyDisposable.INSTANCE);
                  d.dispose();
                  d.dispose();
              }
  
              @Override
              public void onComplete() {
                  to.onComplete();
              }
  
              @Override
              public void onError(Throwable e) {
                  to.onError(e);
              }
          });
  
          ps.onComplete();
  
          to.assertEmpty();
      }
  }
  