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 java.util.List;
  
  import io.reactivex.rxjava3.disposables.Disposable;
  import org.junit.Test;
  
  import io.reactivex.rxjava3.core.*;
  import io.reactivex.rxjava3.plugins.RxJavaPlugins;
  import io.reactivex.rxjava3.testsupport.TestHelper;
  
  public class CompletableUnsafeTest extends RxJavaTest {
  
      @Test(expected = IllegalArgumentException.class)
      public void unsafeCreateRejectsCompletable() {
          Completable.unsafeCreate(Completable.complete());
      }
  
      @Test
      public void wrapAlreadyCompletable() {
          assertSame(Completable.complete(), Completable.wrap(Completable.complete()));
      }
  
      @Test
      public void wrapCustomCompletable() {
  
          Completable.wrap(new CompletableSource() {
              @Override
              public void subscribe(CompletableObserver observer) {
                  observer.onSubscribe(Disposable.empty());
                  observer.onComplete();
              }
          })
          .test()
          .assertResult();
      }
  
      @Test(expected = NullPointerException.class)
      public void unsafeCreateThrowsNPE() {
          Completable.unsafeCreate(new CompletableSource() {
              @Override
              public void subscribe(CompletableObserver observer) {
                  throw new NullPointerException();
              }
          }).test();
      }
  
      @Test
      public void unsafeCreateThrowsIAE() {
          List<Throwable> errors = TestHelper.trackPluginErrors();
          try {
              Completable.unsafeCreate(new CompletableSource() {
                  @Override
                  public void subscribe(CompletableObserver observer) {
                      throw new IllegalArgumentException();
                  }
              }).test();
              fail("Should have thrown!");
          } catch (NullPointerException ex) {
              if (!(ex.getCause() instanceof IllegalArgumentException)) {
                  fail(ex.toString() + ": should have thrown NPA(IAE)");
              }
  
              TestHelper.assertError(errors, 0, IllegalArgumentException.class);
          } finally {
              RxJavaPlugins.reset();
          }
      }
  }
  