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.maybe;
  
  import static org.junit.Assert.*;
  
  import java.util.*;
  
  import org.junit.Test;
  
  import io.reactivex.rxjava3.core.*;
  import io.reactivex.rxjava3.exceptions.TestException;
  import io.reactivex.rxjava3.functions.*;
  import io.reactivex.rxjava3.internal.functions.Functions;
  import io.reactivex.rxjava3.observers.TestObserver;
  import io.reactivex.rxjava3.plugins.RxJavaPlugins;
  import io.reactivex.rxjava3.subjects.PublishSubject;
  import io.reactivex.rxjava3.testsupport.TestHelper;
  
  public class MaybeDoAfterSuccessTest extends RxJavaTest {
  
      final List<Integer> values = new ArrayList<>();
  
      final Consumer<Integer> afterSuccess = new Consumer<Integer>() {
          @Override
          public void accept(Integer e) throws Exception {
              values.add(-e);
          }
      };
  
      final TestObserver<Integer> to = new TestObserver<Integer>() {
          @Override
          public void onNext(Integer t) {
              super.onNext(t);
              MaybeDoAfterSuccessTest.this.values.add(t);
          }
      };
  
      @Test
      public void just() {
          Maybe.just(1)
          .doAfterSuccess(afterSuccess)
          .subscribeWith(to)
          .assertResult(1);
  
          assertEquals(Arrays.asList(1, -1), values);
      }
  
      @Test
      public void error() {
          Maybe.<Integer>error(new TestException())
          .doAfterSuccess(afterSuccess)
          .subscribeWith(to)
          .assertFailure(TestException.class);
  
          assertTrue(values.isEmpty());
      }
  
      @Test
      public void empty() {
          Maybe.<Integer>empty()
          .doAfterSuccess(afterSuccess)
          .subscribeWith(to)
          .assertResult();
  
          assertTrue(values.isEmpty());
      }
  
      @Test
      public void justConditional() {
          Maybe.just(1)
          .doAfterSuccess(afterSuccess)
          .filter(Functions.alwaysTrue())
          .subscribeWith(to)
          .assertResult(1);
  
          assertEquals(Arrays.asList(1, -1), values);
      }
  
      @Test
      public void errorConditional() {
          Maybe.<Integer>error(new TestException())
          .doAfterSuccess(afterSuccess)
          .filter(Functions.alwaysTrue())
          .subscribeWith(to)
          .assertFailure(TestException.class);
  
          assertTrue(values.isEmpty());
      }
  
      @Test
      public void emptyConditional() {
          Maybe.<Integer>empty()
          .doAfterSuccess(afterSuccess)
          .filter(Functions.alwaysTrue())
          .subscribeWith(to)
          .assertResult();
  
          assertTrue(values.isEmpty());
      }
  
      @Test
      public void consumerThrows() {
          List<Throwable> errors = TestHelper.trackPluginErrors();
          try {
              Maybe.just(1)
              .doAfterSuccess(new Consumer<Integer>() {
                  @Override
                  public void accept(Integer e) throws Exception {
                      throw new TestException();
                  }
              })
              .test()
              .assertResult(1);
  
              TestHelper.assertUndeliverable(errors, 0, TestException.class);
          } finally {
              RxJavaPlugins.reset();
          }
      }
  
      @Test
      public void dispose() {
          TestHelper.checkDisposed(PublishSubject.<Integer>create().singleElement().doAfterSuccess(afterSuccess));
      }
  
      @Test
      public void doubleOnSubscribe() {
          TestHelper.checkDoubleOnSubscribeMaybe(new Function<Maybe<Integer>, MaybeSource<Integer>>() {
              @Override
              public MaybeSource<Integer> apply(Maybe<Integer> m) throws Exception {
                  return m.doAfterSuccess(afterSuccess);
              }
          });
      }
  }
  