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.io.IOException;
  import java.util.List;
  
  import org.junit.Test;
  
  import io.reactivex.rxjava3.core.*;
  import io.reactivex.rxjava3.disposables.*;
  import io.reactivex.rxjava3.exceptions.TestException;
  import io.reactivex.rxjava3.functions.Cancellable;
  import io.reactivex.rxjava3.plugins.RxJavaPlugins;
  import io.reactivex.rxjava3.testsupport.TestHelper;
  
  public class CompletableCreateTest extends RxJavaTest {
  
      @Test
      public void basic() {
          List<Throwable> errors = TestHelper.trackPluginErrors();
          try {
              final Disposable d = Disposable.empty();
  
              Completable.create(new CompletableOnSubscribe() {
                  @Override
                  public void subscribe(CompletableEmitter e) throws Exception {
                      e.setDisposable(d);
  
                      e.onComplete();
                      e.onError(new TestException());
                      e.onComplete();
                  }
              })
              .test()
              .assertResult();
  
              assertTrue(d.isDisposed());
  
              TestHelper.assertUndeliverable(errors, 0, TestException.class);
          } finally {
              RxJavaPlugins.reset();
          }
      }
  
      @Test
      public void basicWithCancellable() {
          List<Throwable> errors = TestHelper.trackPluginErrors();
          try {
              final Disposable d1 = Disposable.empty();
              final Disposable d2 = Disposable.empty();
  
              Completable.create(new CompletableOnSubscribe() {
                  @Override
                  public void subscribe(CompletableEmitter e) throws Exception {
                      e.setDisposable(d1);
                      e.setCancellable(new Cancellable() {
                          @Override
                          public void cancel() throws Exception {
                              d2.dispose();
                          }
                      });
  
                      e.onComplete();
                      e.onError(new TestException());
                      e.onComplete();
                  }
              })
              .test()
              .assertResult();
  
              assertTrue(d1.isDisposed());
              assertTrue(d2.isDisposed());
  
              TestHelper.assertUndeliverable(errors, 0, TestException.class);
          } finally {
              RxJavaPlugins.reset();
          }
      }
  
      @Test
      public void basicWithError() {
          List<Throwable> errors = TestHelper.trackPluginErrors();
          try {
              final Disposable d = Disposable.empty();
  
              Completable.create(new CompletableOnSubscribe() {
                  @Override
                  public void subscribe(CompletableEmitter e) throws Exception {
                      e.setDisposable(d);
  
                      e.onError(new TestException());
                      e.onComplete();
                      e.onError(new TestException("second"));
                  }
              })
              .test()
              .assertFailure(TestException.class);
  
              assertTrue(d.isDisposed());
  
              TestHelper.assertUndeliverable(errors, 0, TestException.class, "second");
          } finally {
              RxJavaPlugins.reset();
          }
      }
  
      @Test
      public void callbackThrows() {
          Completable.create(new CompletableOnSubscribe() {
              @Override
              public void subscribe(CompletableEmitter e) throws Exception {
                  throw new TestException();
              }
          })
          .test()
          .assertFailure(TestException.class);
      }
  
      @Test
      public void onErrorNull() {
          Completable.create(new CompletableOnSubscribe() {
              @Override
              public void subscribe(CompletableEmitter e) throws Exception {
                  e.onError(null);
              }
          })
          .test()
          .assertFailure(NullPointerException.class);
      }
  
      @Test
      public void dispose() {
          TestHelper.checkDisposed(Completable.create(new CompletableOnSubscribe() {
              @Override
              public void subscribe(CompletableEmitter e) throws Exception {
                  e.onComplete();
              }
          }));
      }
  
      @Test
      public void onErrorThrows() {
          Completable.create(new CompletableOnSubscribe() {
              @Override
              public void subscribe(CompletableEmitter e) throws Exception {
                  Disposable d = Disposable.empty();
                  e.setDisposable(d);
  
                  try {
                      e.onError(new IOException());
                      fail("Should have thrown");
                  } catch (TestException ex) {
                      // expected
                  }
  
                  assertTrue(d.isDisposed());
                  assertTrue(e.isDisposed());
              }
          }).subscribe(new CompletableObserver() {
  
              @Override
              public void onSubscribe(Disposable d) {
  
              }
  
              @Override
              public void onError(Throwable e) {
                  throw new TestException();
              }
  
              @Override
              public void onComplete() {
  
              }
          });
      }
  
      @Test
      public void onCompleteThrows() {
          Completable.create(new CompletableOnSubscribe() {
              @Override
              public void subscribe(CompletableEmitter e) throws Exception {
                  Disposable d = Disposable.empty();
                  e.setDisposable(d);
  
                  try {
                      e.onComplete();
                      fail("Should have thrown");
                  } catch (TestException ex) {
                      // expected
                  }
  
                  assertTrue(d.isDisposed());
                  assertTrue(e.isDisposed());
              }
          }).subscribe(new CompletableObserver() {
  
              @Override
              public void onSubscribe(Disposable d) {
  
              }
  
              @Override
              public void onError(Throwable e) {
  
              }
  
              @Override
              public void onComplete() {
                  throw new TestException();
              }
          });
      }
  
      @Test
      public void onErrorThrows2() {
          Completable.create(new CompletableOnSubscribe() {
              @Override
              public void subscribe(CompletableEmitter e) throws Exception {
                  try {
                      e.onError(new IOException());
                      fail("Should have thrown");
                  } catch (TestException ex) {
                      // expected
                  }
  
                  assertTrue(e.isDisposed());
              }
          }).subscribe(new CompletableObserver() {
  
              @Override
              public void onSubscribe(Disposable d) {
  
              }
  
              @Override
              public void onError(Throwable e) {
                  throw new TestException();
              }
  
              @Override
              public void onComplete() {
  
              }
          });
      }
  
      @Test
      public void onCompleteThrows2() {
          Completable.create(new CompletableOnSubscribe() {
              @Override
              public void subscribe(CompletableEmitter e) throws Exception {
                  try {
                      e.onComplete();
                      fail("Should have thrown");
                  } catch (TestException ex) {
                      // expected
                  }
  
                  assertTrue(e.isDisposed());
              }
          }).subscribe(new CompletableObserver() {
  
              @Override
              public void onSubscribe(Disposable d) {
  
              }
  
              @Override
              public void onError(Throwable e) {
  
              }
  
              @Override
              public void onComplete() {
                  throw new TestException();
              }
          });
      }
  
      @Test
      public void tryOnError() {
          List<Throwable> errors = TestHelper.trackPluginErrors();
          try {
              final Boolean[] response = { null };
              Completable.create(new CompletableOnSubscribe() {
                  @Override
                  public void subscribe(CompletableEmitter e) throws Exception {
                      e.onComplete();
                      response[0] = e.tryOnError(new TestException());
                  }
              })
              .test()
              .assertResult();
  
              assertFalse(response[0]);
  
              assertTrue(errors.toString(), errors.isEmpty());
          } finally {
              RxJavaPlugins.reset();
          }
      }
  
      @Test
      public void emitterHasToString() {
          Completable.create(new CompletableOnSubscribe() {
              @Override
              public void subscribe(CompletableEmitter emitter) throws Exception {
                  assertTrue(emitter.toString().contains(CompletableCreate.Emitter.class.getSimpleName()));
              }
          }).test().assertEmpty();
      }
  }
  