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.observable;
  
  import static org.junit.Assert.*;
  
  import java.util.*;
  
  import org.junit.Test;
  
  import io.reactivex.rxjava3.core.Observable;
  import io.reactivex.rxjava3.core.Observer;
  import io.reactivex.rxjava3.core.RxJavaTest;
  import io.reactivex.rxjava3.disposables.Disposable;
  import io.reactivex.rxjava3.exceptions.TestException;
  import io.reactivex.rxjava3.functions.*;
  import io.reactivex.rxjava3.internal.functions.Functions;
  import io.reactivex.rxjava3.operators.QueueDisposable;
  import io.reactivex.rxjava3.operators.QueueFuseable;
  import io.reactivex.rxjava3.plugins.RxJavaPlugins;
  import io.reactivex.rxjava3.subjects.UnicastSubject;
  import io.reactivex.rxjava3.testsupport.*;
  
  public class ObservableDoFinallyTest extends RxJavaTest implements Action {
  
      int calls;
  
      @Override
      public void run() throws Exception {
          calls++;
      }
  
      @Test
      public void normalJust() {
          Observable.just(1)
          .doFinally(this)
          .test()
          .assertResult(1);
  
          assertEquals(1, calls);
      }
  
      @Test
      public void normalEmpty() {
          Observable.empty()
          .doFinally(this)
          .test()
          .assertResult();
  
          assertEquals(1, calls);
      }
  
      @Test
      public void normalError() {
          Observable.error(new TestException())
          .doFinally(this)
          .test()
          .assertFailure(TestException.class);
  
          assertEquals(1, calls);
      }
  
      @Test
      public void normalTake() {
          Observable.range(1, 10)
          .doFinally(this)
          .take(5)
          .test()
          .assertResult(1, 2, 3, 4, 5);
  
          assertEquals(1, calls);
      }
  
      @Test
      public void doubleOnSubscribe() {
          TestHelper.checkDoubleOnSubscribeObservable(new Function<Observable<Object>, Observable<Object>>() {
              @Override
              public Observable<Object> apply(Observable<Object> f) throws Exception {
                  return f.doFinally(ObservableDoFinallyTest.this);
              }
          });
          TestHelper.checkDoubleOnSubscribeObservable(new Function<Observable<Object>, Observable<Object>>() {
              @Override
              public Observable<Object> apply(Observable<Object> f) throws Exception {
                  return f.doFinally(ObservableDoFinallyTest.this).filter(Functions.alwaysTrue());
              }
          });
      }
  
      @Test
      public void syncFused() {
          TestObserverEx<Integer> to = new TestObserverEx<>(QueueFuseable.SYNC);
  
          Observable.range(1, 5)
          .doFinally(this)
          .subscribe(to);
  
          to.assertFusionMode(QueueFuseable.SYNC)
          .assertResult(1, 2, 3, 4, 5);
  
          assertEquals(1, calls);
      }
  
      @Test
      public void syncFusedBoundary() {
          TestObserverEx<Integer> to = new TestObserverEx<>(QueueFuseable.SYNC | QueueFuseable.BOUNDARY);
  
          Observable.range(1, 5)
          .doFinally(this)
          .subscribe(to);
  
          to.assertFusionMode(QueueFuseable.NONE)
          .assertResult(1, 2, 3, 4, 5);
  
          assertEquals(1, calls);
      }
  
      @Test
      public void asyncFused() {
          TestObserverEx<Integer> to = new TestObserverEx<>(QueueFuseable.ASYNC);
  
          UnicastSubject<Integer> us = UnicastSubject.create();
          TestHelper.emit(us, 1, 2, 3, 4, 5);
  
          us
          .doFinally(this)
          .subscribe(to);
  
          to.assertFusionMode(QueueFuseable.ASYNC)
          .assertResult(1, 2, 3, 4, 5);
  
          assertEquals(1, calls);
      }
  
      @Test
      public void asyncFusedBoundary() {
          TestObserverEx<Integer> to = new TestObserverEx<>(QueueFuseable.ASYNC | QueueFuseable.BOUNDARY);
  
          UnicastSubject<Integer> us = UnicastSubject.create();
          TestHelper.emit(us, 1, 2, 3, 4, 5);
  
          us
          .doFinally(this)
          .subscribe(to);
  
          to.assertFusionMode(QueueFuseable.NONE)
          .assertResult(1, 2, 3, 4, 5);
  
          assertEquals(1, calls);
      }
  
      @Test
      public void normalJustConditional() {
          Observable.just(1)
          .doFinally(this)
          .filter(Functions.alwaysTrue())
          .test()
          .assertResult(1);
  
          assertEquals(1, calls);
      }
  
      @Test
      public void normalEmptyConditional() {
          Observable.empty()
          .doFinally(this)
          .filter(Functions.alwaysTrue())
          .test()
          .assertResult();
  
          assertEquals(1, calls);
      }
  
      @Test
      public void normalErrorConditional() {
          Observable.error(new TestException())
          .doFinally(this)
          .filter(Functions.alwaysTrue())
          .test()
          .assertFailure(TestException.class);
  
          assertEquals(1, calls);
      }
  
      @Test
      public void normalTakeConditional() {
          Observable.range(1, 10)
          .doFinally(this)
          .filter(Functions.alwaysTrue())
          .take(5)
          .test()
          .assertResult(1, 2, 3, 4, 5);
  
          assertEquals(1, calls);
      }
  
      @Test
      public void syncFusedConditional() {
          TestObserverEx<Integer> to = new TestObserverEx<>(QueueFuseable.SYNC);
  
          Observable.range(1, 5)
          .doFinally(this)
          .filter(Functions.alwaysTrue())
          .subscribe(to);
  
          to.assertFusionMode(QueueFuseable.SYNC)
          .assertResult(1, 2, 3, 4, 5);
  
          assertEquals(1, calls);
      }
  
      @Test
      public void nonFused() {
          TestObserverEx<Integer> to = new TestObserverEx<>(QueueFuseable.SYNC);
  
          Observable.range(1, 5).hide()
          .doFinally(this)
          .subscribe(to);
  
          to.assertFusionMode(QueueFuseable.NONE)
          .assertResult(1, 2, 3, 4, 5);
  
          assertEquals(1, calls);
      }
  
      @Test
      public void nonFusedConditional() {
          TestObserverEx<Integer> to = new TestObserverEx<>(QueueFuseable.SYNC);
  
          Observable.range(1, 5).hide()
          .doFinally(this)
          .filter(Functions.alwaysTrue())
          .subscribe(to);
  
          to.assertFusionMode(QueueFuseable.NONE)
          .assertResult(1, 2, 3, 4, 5);
  
          assertEquals(1, calls);
      }
  
      @Test
      public void syncFusedBoundaryConditional() {
          TestObserverEx<Integer> to = new TestObserverEx<>(QueueFuseable.SYNC | QueueFuseable.BOUNDARY);
  
          Observable.range(1, 5)
          .doFinally(this)
          .filter(Functions.alwaysTrue())
          .subscribe(to);
  
          to.assertFusionMode(QueueFuseable.NONE)
          .assertResult(1, 2, 3, 4, 5);
  
          assertEquals(1, calls);
      }
  
      @Test
      public void asyncFusedConditional() {
          TestObserverEx<Integer> to = new TestObserverEx<>(QueueFuseable.ASYNC);
  
          UnicastSubject<Integer> us = UnicastSubject.create();
          TestHelper.emit(us, 1, 2, 3, 4, 5);
  
          us
          .doFinally(this)
          .filter(Functions.alwaysTrue())
          .subscribe(to);
  
          to.assertFusionMode(QueueFuseable.ASYNC)
          .assertResult(1, 2, 3, 4, 5);
  
          assertEquals(1, calls);
      }
  
      @Test
      public void asyncFusedBoundaryConditional() {
          TestObserverEx<Integer> to = new TestObserverEx<>(QueueFuseable.ASYNC | QueueFuseable.BOUNDARY);
  
          UnicastSubject<Integer> us = UnicastSubject.create();
          TestHelper.emit(us, 1, 2, 3, 4, 5);
  
          us
          .doFinally(this)
          .filter(Functions.alwaysTrue())
          .subscribe(to);
  
          to.assertFusionMode(QueueFuseable.NONE)
          .assertResult(1, 2, 3, 4, 5);
  
          assertEquals(1, calls);
      }
  
      @Test
      public void actionThrows() {
          List<Throwable> errors = TestHelper.trackPluginErrors();
          try {
              Observable.just(1)
              .doFinally(new Action() {
                  @Override
                  public void run() throws Exception {
                      throw new TestException();
                  }
              })
              .test()
              .assertResult(1)
              .dispose();
  
              TestHelper.assertUndeliverable(errors, 0, TestException.class);
          } finally {
              RxJavaPlugins.reset();
          }
      }
  
      @Test
      public void actionThrowsConditional() {
          List<Throwable> errors = TestHelper.trackPluginErrors();
          try {
              Observable.just(1)
              .doFinally(new Action() {
                  @Override
                  public void run() throws Exception {
                      throw new TestException();
                  }
              })
              .filter(Functions.alwaysTrue())
              .test()
              .assertResult(1)
              .dispose();
  
              TestHelper.assertUndeliverable(errors, 0, TestException.class);
          } finally {
              RxJavaPlugins.reset();
          }
      }
  
      @Test
      public void clearIsEmpty() {
          Observable.range(1, 5)
          .doFinally(this)
          .subscribe(new Observer<Integer>() {
  
              @Override
              public void onSubscribe(Disposable d) {
                  @SuppressWarnings("unchecked")
                  QueueDisposable<Integer> qd = (QueueDisposable<Integer>)d;
  
                  qd.requestFusion(QueueFuseable.ANY);
  
                  assertFalse(qd.isEmpty());
  
                  try {
                      assertEquals(1, qd.poll().intValue());
                  } catch (Throwable ex) {
                      throw new RuntimeException(ex);
                  }
  
                  assertFalse(qd.isEmpty());
  
                  qd.clear();
  
                  assertTrue(qd.isEmpty());
  
                  qd.dispose();
              }
  
              @Override
              public void onNext(Integer t) {
              }
  
              @Override
              public void onError(Throwable t) {
              }
  
              @Override
              public void onComplete() {
              }
          });
  
          assertEquals(1, calls);
      }
  
      @Test
      public void clearIsEmptyConditional() {
          Observable.range(1, 5)
          .doFinally(this)
          .filter(Functions.alwaysTrue())
          .subscribe(new Observer<Integer>() {
  
              @Override
              public void onSubscribe(Disposable d) {
                  @SuppressWarnings("unchecked")
                  QueueDisposable<Integer> qd = (QueueDisposable<Integer>)d;
  
                  qd.requestFusion(QueueFuseable.ANY);
  
                  assertFalse(qd.isEmpty());
  
                  assertFalse(qd.isDisposed());
  
                  try {
                      assertEquals(1, qd.poll().intValue());
                  } catch (Throwable ex) {
                      throw new RuntimeException(ex);
                  }
  
                  assertFalse(qd.isEmpty());
  
                  qd.clear();
  
                  assertTrue(qd.isEmpty());
  
                  qd.dispose();
  
                  assertTrue(qd.isDisposed());
              }
  
              @Override
              public void onNext(Integer t) {
              }
  
              @Override
              public void onError(Throwable t) {
              }
  
              @Override
              public void onComplete() {
              }
          });
  
          assertEquals(1, calls);
      }
  
      @Test
      public void eventOrdering() {
          final List<String> list = new ArrayList<>();
  
          Observable.error(new TestException())
          .doOnDispose(new Action() {
              @Override
              public void run() throws Exception {
                  list.add("dispose");
              }
          })
          .doFinally(new Action() {
              @Override
              public void run() throws Exception {
                  list.add("finally");
              }
          })
          .subscribe(
                  new Consumer<Object>() {
                      @Override
                      public void accept(Object v) throws Exception {
                          list.add("onNext");
                      }
                  },
                  new Consumer<Throwable>() {
                      @Override
                      public void accept(Throwable e) throws Exception {
                          list.add("onError");
                      }
                  },
                  new Action() {
                      @Override
                      public void run() throws Exception {
                          list.add("onComplete");
                      }
                  });
  
          assertEquals(Arrays.asList("onError", "finally"), list);
      }
  
      @Test
      public void eventOrdering2() {
          final List<String> list = new ArrayList<>();
  
          Observable.just(1)
          .doOnDispose(new Action() {
              @Override
              public void run() throws Exception {
                  list.add("dispose");
              }
          })
          .doFinally(new Action() {
              @Override
              public void run() throws Exception {
                  list.add("finally");
              }
          })
          .subscribe(
                  new Consumer<Object>() {
                      @Override
                      public void accept(Object v) throws Exception {
                          list.add("onNext");
                      }
                  },
                  new Consumer<Throwable>() {
                      @Override
                      public void accept(Throwable e) throws Exception {
                          list.add("onError");
                      }
                  },
                  new Action() {
                      @Override
                      public void run() throws Exception {
                          list.add("onComplete");
                      }
                  });
  
          assertEquals(Arrays.asList("onNext", "onComplete", "finally"), list);
      }
  
      @Test
      public void fusionRejected() {
          TestObserverEx<Object> to = new TestObserverEx<>();
          to.setInitialFusionMode(QueueFuseable.ANY);
  
          TestHelper.rejectObservableFusion()
          .doFinally(() -> { })
          .subscribeWith(to);
  
          to.assertFuseable()
          .assertFusionMode(QueueFuseable.NONE);
      }
  }
  