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.parallel;
  
  import org.reactivestreams.Subscriber;
  
  import io.reactivex.rxjava3.exceptions.TestException;
  import io.reactivex.rxjava3.internal.subscriptions.EmptySubscription;
  
  /**
   * Signals two onErrors to each subscriber for testing purposes.
   */
  public final class ParallelInvalid extends ParallelFlowable<Object> {
  
      @Override
      public void subscribe(Subscriber<? super Object>[] subscribers) {
          TestException ex = new TestException();
          for (Subscriber<? super Object> s : subscribers) {
              EmptySubscription.error(ex, s);
              s.onError(ex);
              s.onNext(0);
              s.onComplete();
              s.onComplete();
          }
      }
  
      @Override
      public int parallelism() {
          return 4;
      }
  
  }
  