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.assertFalse;
  import static org.mockito.ArgumentMatchers.any;
  import static org.mockito.Mockito.*;
  
  import org.junit.Test;
  
  import io.reactivex.rxjava3.core.*;
  import io.reactivex.rxjava3.exceptions.TestException;
  import io.reactivex.rxjava3.functions.Function;
  import io.reactivex.rxjava3.subjects.PublishSubject;
  import io.reactivex.rxjava3.testsupport.TestHelper;
  
  public class ObservableHideTest extends RxJavaTest {
      @Test
      public void hiding() {
          PublishSubject<Integer> src = PublishSubject.create();
  
          Observable<Integer> dst = src.hide();
  
          assertFalse(dst instanceof PublishSubject);
  
          Observer<Object> o = TestHelper.mockObserver();
  
          dst.subscribe(o);
  
          src.onNext(1);
          src.onComplete();
  
          verify(o).onNext(1);
          verify(o).onComplete();
          verify(o, never()).onError(any(Throwable.class));
      }
  
      @Test
      public void hidingError() {
          PublishSubject<Integer> src = PublishSubject.create();
  
          Observable<Integer> dst = src.hide();
  
          assertFalse(dst instanceof PublishSubject);
  
          Observer<Object> o = TestHelper.mockObserver();
  
          dst.subscribe(o);
  
          src.onError(new TestException());
  
          verify(o, never()).onNext(any());
          verify(o, never()).onComplete();
          verify(o).onError(any(TestException.class));
      }
  
      @Test
      public void doubleOnSubscribe() {
          TestHelper.checkDoubleOnSubscribeObservable(new Function<Observable<Object>, ObservableSource<Object>>() {
              @Override
              public ObservableSource<Object> apply(Observable<Object> o)
                      throws Exception {
                  return o.hide();
              }
          });
      }
  
      @Test
      public void disposed() {
          TestHelper.checkDisposed(PublishSubject.create().hide());
      }
  }
  