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.assertTrue;
  import static org.mockito.ArgumentMatchers.any;
  import static org.mockito.Mockito.*;
  
  import java.util.concurrent.TimeUnit;
  
  import org.junit.Test;
  
  import io.reactivex.rxjava3.core.Maybe;
  import io.reactivex.rxjava3.exceptions.TestException;
  import io.reactivex.rxjava3.functions.*;
  import io.reactivex.rxjava3.observers.TestObserver;
  import io.reactivex.rxjava3.schedulers.Schedulers;
  import io.reactivex.rxjava3.testsupport.TestHelper;
  
  public class MaybeBlockingSubscribeTest {
  
      @Test
      public void noArgSuccess() {
          Maybe.just(1)
          .blockingSubscribe();
      }
  
      @Test
      public void noArgSuccessAsync() {
          Maybe.just(1)
          .delay(100, TimeUnit.MILLISECONDS)
          .blockingSubscribe();
      }
  
      @Test
      public void noArgEmpty() {
          Maybe.empty()
          .blockingSubscribe();
      }
  
      @Test
      public void noArgEmptyAsync() {
          Maybe.empty()
          .delay(100, TimeUnit.MILLISECONDS)
          .blockingSubscribe();
      }
  
      @Test
      public void noArgError() throws Throwable {
          TestHelper.withErrorTracking(errors -> {
              Maybe.error(new TestException())
              .blockingSubscribe();
  
              TestHelper.assertUndeliverable(errors, 0, TestException.class);
          });
      }
  
      @Test
      public void noArgErrorAsync() throws Throwable {
          TestHelper.withErrorTracking(errors -> {
              Maybe.error(new TestException())
              .delay(100, TimeUnit.MILLISECONDS, Schedulers.computation())
              .blockingSubscribe();
  
              TestHelper.assertUndeliverable(errors, 0, TestException.class);
          });
      }
  
      @Test
      public void oneArgSuccess() throws Throwable {
          @SuppressWarnings("unchecked")
          Consumer<Integer> success = mock(Consumer.class);
  
          Maybe.just(1)
          .blockingSubscribe(success);
  
          verify(success).accept(1);
      }
  
      @Test
      public void oneArgSuccessAsync() throws Throwable {
          @SuppressWarnings("unchecked")
          Consumer<Integer> success = mock(Consumer.class);
  
          Maybe.just(1)
          .delay(50, TimeUnit.MILLISECONDS)
          .blockingSubscribe(success);
  
          verify(success).accept(1);
      }
  
      @Test
      public void oneArgEmpty() throws Throwable {
          @SuppressWarnings("unchecked")
          Consumer<Integer> success = mock(Consumer.class);
  
          Maybe.<Integer>empty()
          .blockingSubscribe(success);
  
          verify(success, never()).accept(any());
      }
  
      @Test
      public void oneArgEmptyAsync() throws Throwable {
          @SuppressWarnings("unchecked")
          Consumer<Integer> success = mock(Consumer.class);
  
          Maybe.<Integer>empty()
          .delay(50, TimeUnit.MILLISECONDS)
          .blockingSubscribe(success);
  
          verify(success, never()).accept(any());
      }
  
      @Test
      public void oneArgSuccessFails() throws Throwable {
          TestHelper.withErrorTracking(errors -> {
              @SuppressWarnings("unchecked")
              Consumer<Integer> success = mock(Consumer.class);
              doThrow(new TestException()).when(success).accept(any());
  
              Maybe.just(1)
              .blockingSubscribe(success);
  
              TestHelper.assertUndeliverable(errors, 0, TestException.class);
  
              verify(success).accept(1);
          });
      }
  
      @Test
      public void oneArgError() throws Throwable {
          TestHelper.withErrorTracking(errors -> {
              @SuppressWarnings("unchecked")
              Consumer<Integer> success = mock(Consumer.class);
  
              Maybe.<Integer>error(new TestException())
              .blockingSubscribe(success);
  
              TestHelper.assertUndeliverable(errors, 0, TestException.class);
  
              verify(success, never()).accept(any());
          });
      }
  
      @Test
      public void oneArgErrorAsync() throws Throwable {
          TestHelper.withErrorTracking(errors -> {
              @SuppressWarnings("unchecked")
              Consumer<Integer> success = mock(Consumer.class);
  
              Maybe.<Integer>error(new TestException())
              .delay(50, TimeUnit.MILLISECONDS, Schedulers.computation())
              .blockingSubscribe(success);
  
              TestHelper.assertUndeliverable(errors, 0, TestException.class);
  
              verify(success, never()).accept(any());
          });
      }
  
      @Test
      public void twoArgSuccess() throws Throwable {
          @SuppressWarnings("unchecked")
          Consumer<Integer> success = mock(Consumer.class);
          @SuppressWarnings("unchecked")
          Consumer<? super Throwable> consumer = mock(Consumer.class);
  
          Maybe.just(1)
          .blockingSubscribe(success, consumer);
  
          verify(success).accept(1);
          verify(consumer, never()).accept(any());
      }
  
      @Test
      public void twoArgSuccessAsync() throws Throwable {
          @SuppressWarnings("unchecked")
          Consumer<Integer> success = mock(Consumer.class);
          @SuppressWarnings("unchecked")
          Consumer<? super Throwable> consumer = mock(Consumer.class);
  
          Maybe.just(1)
          .delay(50, TimeUnit.MILLISECONDS)
          .blockingSubscribe(success, consumer);
  
          verify(success).accept(any());
          verify(consumer, never()).accept(any());
      }
  
      @Test
      public void twoArgEmpty() throws Throwable {
          @SuppressWarnings("unchecked")
          Consumer<Integer> success = mock(Consumer.class);
          @SuppressWarnings("unchecked")
          Consumer<? super Throwable> consumer = mock(Consumer.class);
  
          Maybe.<Integer>empty()
          .blockingSubscribe(success, consumer);
  
          verify(success, never()).accept(any());
          verify(consumer, never()).accept(any());
      }
  
      @Test
      public void twoArgEmptyAsync() throws Throwable {
          @SuppressWarnings("unchecked")
          Consumer<Integer> success = mock(Consumer.class);
          @SuppressWarnings("unchecked")
          Consumer<? super Throwable> consumer = mock(Consumer.class);
  
          Maybe.<Integer>empty()
          .delay(50, TimeUnit.MILLISECONDS)
          .blockingSubscribe(success, consumer);
  
          verify(success, never()).accept(any());
          verify(consumer, never()).accept(any());
      }
  
      @Test
      public void twoArgSuccessFails() throws Throwable {
          TestHelper.withErrorTracking(errors -> {
              @SuppressWarnings("unchecked")
              Consumer<Integer> success = mock(Consumer.class);
              doThrow(new TestException()).when(success).accept(any());
              @SuppressWarnings("unchecked")
              Consumer<? super Throwable> consumer = mock(Consumer.class);
  
              Maybe.just(1)
              .blockingSubscribe(success, consumer);
  
              TestHelper.assertUndeliverable(errors, 0, TestException.class);
  
              verify(success).accept(any());
              verify(consumer, never()).accept(any());
          });
      }
  
      @Test
      public void twoArgError() throws Throwable {
          TestHelper.withErrorTracking(errors -> {
              @SuppressWarnings("unchecked")
              Consumer<Integer> success = mock(Consumer.class);
              @SuppressWarnings("unchecked")
              Consumer<? super Throwable> consumer = mock(Consumer.class);
  
              Maybe.<Integer>error(new TestException())
              .blockingSubscribe(success, consumer);
  
              assertTrue("" + errors, errors.isEmpty());
  
              verify(success, never()).accept(any());
              verify(consumer).accept(any(TestException.class));
          });
      }
  
      @Test
      public void twoArgErrorAsync() throws Throwable {
          TestHelper.withErrorTracking(errors -> {
              @SuppressWarnings("unchecked")
              Consumer<Integer> success = mock(Consumer.class);
              @SuppressWarnings("unchecked")
              Consumer<? super Throwable> consumer = mock(Consumer.class);
  
              Maybe.<Integer>error(new TestException())
              .delay(50, TimeUnit.MILLISECONDS, Schedulers.computation())
              .blockingSubscribe(success, consumer);
  
              assertTrue("" + errors, errors.isEmpty());
  
              verify(success, never()).accept(any());
              verify(consumer).accept(any(TestException.class));
          });
      }
  
      @Test
      public void twoArgErrorFails() throws Throwable {
          TestHelper.withErrorTracking(errors -> {
              @SuppressWarnings("unchecked")
              Consumer<Integer> success = mock(Consumer.class);
              @SuppressWarnings("unchecked")
              Consumer<? super Throwable> consumer = mock(Consumer.class);
              doThrow(new TestException()).when(consumer).accept(any());
  
              Maybe.<Integer>error(new TestException())
              .delay(50, TimeUnit.MILLISECONDS, Schedulers.computation())
              .blockingSubscribe(success, consumer);
  
              TestHelper.assertUndeliverable(errors, 0, TestException.class);
  
              verify(success, never()).accept(any());
              verify(consumer).accept(any(TestException.class));
          });
      }
  
      @Test
      public void threeArgSuccess() throws Throwable {
          @SuppressWarnings("unchecked")
          Consumer<Integer> success = mock(Consumer.class);
          @SuppressWarnings("unchecked")
          Consumer<? super Throwable> consumer = mock(Consumer.class);
          Action action = mock(Action.class);
  
          Maybe.just(1)
          .blockingSubscribe(success, consumer, action);
  
          verify(success).accept(any());
          verify(consumer, never()).accept(any(Throwable.class));
          verify(action, never()).run();
      }
  
      @Test
      public void threeArgEmpty() throws Throwable {
          @SuppressWarnings("unchecked")
          Consumer<Integer> success = mock(Consumer.class);
          @SuppressWarnings("unchecked")
          Consumer<? super Throwable> consumer = mock(Consumer.class);
          Action action = mock(Action.class);
  
          Maybe.<Integer>empty()
          .blockingSubscribe(success, consumer, action);
  
          verify(success, never()).accept(any());
          verify(consumer, never()).accept(any(Throwable.class));
          verify(action).run();
      }
  
      @Test
      public void threeArgError() throws Throwable {
          @SuppressWarnings("unchecked")
          Consumer<Integer> success = mock(Consumer.class);
          @SuppressWarnings("unchecked")
          Consumer<? super Throwable> consumer = mock(Consumer.class);
          Action action = mock(Action.class);
  
          Maybe.<Integer>error(new TestException())
          .blockingSubscribe(success, consumer, action);
  
          verify(success, never()).accept(any());
          verify(consumer).accept(any(TestException.class));
          verify(action, never()).run();
      }
  
      @Test
      public void threeArgEmptyFails() throws Throwable {
          TestHelper.withErrorTracking(errors -> {
              @SuppressWarnings("unchecked")
              Consumer<Integer> success = mock(Consumer.class);
              @SuppressWarnings("unchecked")
              Consumer<? super Throwable> consumer = mock(Consumer.class);
  
              Action action = mock(Action.class);
              doThrow(new TestException()).when(action).run();
  
              Maybe.<Integer>empty()
              .delay(50, TimeUnit.MILLISECONDS, Schedulers.computation())
              .blockingSubscribe(success, consumer, action);
  
              TestHelper.assertUndeliverable(errors, 0, TestException.class);
  
              verify(success, never()).accept(any());
              verify(consumer, never()).accept(any());
              verify(action).run();
          });
      }
  
      @Test
      public void threeArgInterrupted() throws Throwable {
          TestHelper.withErrorTracking(errors -> {
              Action onDispose = mock(Action.class);
  
              @SuppressWarnings("unchecked")
              Consumer<Integer> success = mock(Consumer.class);
              @SuppressWarnings("unchecked")
              Consumer<? super Throwable> consumer = mock(Consumer.class);
              Action action = mock(Action.class);
  
              Thread.currentThread().interrupt();
  
              Maybe.<Integer>never()
              .doOnDispose(onDispose)
              .blockingSubscribe(success, consumer, action);
  
              assertTrue("" + errors, errors.isEmpty());
  
              verify(onDispose).run();
              verify(success, never()).accept(any());
              verify(action, never()).run();
              verify(consumer).accept(any(InterruptedException.class));
          });
      }
  
      @Test
      public void observerSuccess() {
          TestObserver<Integer> to = new TestObserver<>();
  
          Maybe.just(1)
          .blockingSubscribe(to);
  
          to.assertResult(1);
      }
  
      @Test
      public void observerSuccessAsync() {
          TestObserver<Integer> to = new TestObserver<>();
  
          Maybe.just(1)
          .delay(50, TimeUnit.MILLISECONDS, Schedulers.computation())
          .blockingSubscribe(to);
  
          to.assertResult(1);
      }
  
      @Test
      public void observerEmpty() {
          TestObserver<Integer> to = new TestObserver<>();
  
          Maybe.<Integer>empty()
          .blockingSubscribe(to);
  
          to.assertResult();
      }
  
      @Test
      public void observerEmptyAsync() {
          TestObserver<Integer> to = new TestObserver<>();
  
          Maybe.<Integer>empty()
          .delay(50, TimeUnit.MILLISECONDS, Schedulers.computation())
          .blockingSubscribe(to);
  
          to.assertResult();
      }
  
      @Test
      public void observerError() {
          TestObserver<Object> to = new TestObserver<>();
  
          Maybe.error(new TestException())
          .blockingSubscribe(to);
  
          to.assertFailure(TestException.class);
      }
  
      @Test
      public void observerErrorAsync() {
          TestObserver<Object> to = new TestObserver<>();
  
          Maybe.error(new TestException())
          .delay(50, TimeUnit.MILLISECONDS, Schedulers.computation())
          .blockingSubscribe(to);
  
          to.assertFailure(TestException.class);
      }
  
      @Test
      public void observerDispose() throws Throwable {
          Action onDispose = mock(Action.class);
  
          TestObserver<Object> to = new TestObserver<>();
          to.dispose();
  
          Maybe.never()
          .doOnDispose(onDispose)
          .blockingSubscribe(to);
  
          to.assertEmpty();
  
          verify(onDispose).run();
      }
  
      @Test
      public void ovserverInterrupted() throws Throwable {
          TestHelper.withErrorTracking(errors -> {
              Action onDispose = mock(Action.class);
  
              TestObserver<Object> to = new TestObserver<>();
  
              Thread.currentThread().interrupt();
  
              Maybe.never()
              .doOnDispose(onDispose)
              .blockingSubscribe(to);
  
              assertTrue("" + errors, errors.isEmpty());
  
              verify(onDispose).run();
              to.assertFailure(InterruptedException.class);
          });
      }
  }
  