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.flowable;
  
  import static org.mockito.ArgumentMatchers.any;
  import static org.mockito.Mockito.*;
  
  import java.util.concurrent.TimeUnit;
  
  import org.junit.Test;
  import org.mockito.InOrder;
  import org.reactivestreams.*;
  
  import io.reactivex.rxjava3.core.*;
  import io.reactivex.rxjava3.exceptions.TestException;
  import io.reactivex.rxjava3.functions.Function;
  import io.reactivex.rxjava3.processors.PublishProcessor;
  import io.reactivex.rxjava3.schedulers.*;
  import io.reactivex.rxjava3.subscribers.TestSubscriber;
  import io.reactivex.rxjava3.testsupport.*;
  
  public class FlowableTakeLastTimedTest extends RxJavaTest {
  
      @Test(expected = IllegalArgumentException.class)
      public void takeLastTimedWithNegativeCount() {
          Flowable.just("one").takeLast(-1, 1, TimeUnit.SECONDS);
      }
  
      @Test
      public void takeLastTimed() {
          TestScheduler scheduler = new TestScheduler();
  
          PublishProcessor<Object> source = PublishProcessor.create();
  
          // FIXME time unit now matters!
          Flowable<Object> result = source.takeLast(1000, TimeUnit.MILLISECONDS, scheduler);
  
          Subscriber<Object> subscriber = TestHelper.mockSubscriber();
  
          InOrder inOrder = inOrder(subscriber);
  
          result.subscribe(subscriber);
  
          source.onNext(1); // T: 0ms
          scheduler.advanceTimeBy(250, TimeUnit.MILLISECONDS);
          source.onNext(2); // T: 250ms
          scheduler.advanceTimeBy(250, TimeUnit.MILLISECONDS);
          source.onNext(3); // T: 500ms
          scheduler.advanceTimeBy(250, TimeUnit.MILLISECONDS);
          source.onNext(4); // T: 750ms
          scheduler.advanceTimeBy(250, TimeUnit.MILLISECONDS);
          source.onNext(5); // T: 1000ms
          scheduler.advanceTimeBy(250, TimeUnit.MILLISECONDS);
          source.onComplete(); // T: 1250ms
  
          inOrder.verify(subscriber, times(1)).onNext(2);
          inOrder.verify(subscriber, times(1)).onNext(3);
          inOrder.verify(subscriber, times(1)).onNext(4);
          inOrder.verify(subscriber, times(1)).onNext(5);
          inOrder.verify(subscriber, times(1)).onComplete();
  
          verify(subscriber, never()).onError(any(Throwable.class));
      }
  
      @Test
      public void takeLastTimedDelayCompletion() {
          TestScheduler scheduler = new TestScheduler();
  
          PublishProcessor<Object> source = PublishProcessor.create();
  
          // FIXME time unit now matters
          Flowable<Object> result = source.takeLast(1000, TimeUnit.MILLISECONDS, scheduler);
  
          Subscriber<Object> subscriber = TestHelper.mockSubscriber();
  
          InOrder inOrder = inOrder(subscriber);
  
          result.subscribe(subscriber);
  
          source.onNext(1); // T: 0ms
          scheduler.advanceTimeBy(250, TimeUnit.MILLISECONDS);
          source.onNext(2); // T: 250ms
          scheduler.advanceTimeBy(250, TimeUnit.MILLISECONDS);
          source.onNext(3); // T: 500ms
          scheduler.advanceTimeBy(250, TimeUnit.MILLISECONDS);
          source.onNext(4); // T: 750ms
          scheduler.advanceTimeBy(250, TimeUnit.MILLISECONDS);
          source.onNext(5); // T: 1000ms
          scheduler.advanceTimeBy(1250, TimeUnit.MILLISECONDS);
          source.onComplete(); // T: 2250ms
  
          inOrder.verify(subscriber, times(1)).onComplete();
  
          verify(subscriber, never()).onNext(any());
          verify(subscriber, never()).onError(any(Throwable.class));
      }
  
      @Test
      public void takeLastTimedWithCapacity() {
          TestScheduler scheduler = new TestScheduler();
  
          PublishProcessor<Object> source = PublishProcessor.create();
  
          // FIXME time unit now matters!
          Flowable<Object> result = source.takeLast(2, 1000, TimeUnit.MILLISECONDS, scheduler);
  
          Subscriber<Object> subscriber = TestHelper.mockSubscriber();
  
          InOrder inOrder = inOrder(subscriber);
  
          result.subscribe(subscriber);
  
          source.onNext(1); // T: 0ms
          scheduler.advanceTimeBy(250, TimeUnit.MILLISECONDS);
          source.onNext(2); // T: 250ms
          scheduler.advanceTimeBy(250, TimeUnit.MILLISECONDS);
          source.onNext(3); // T: 500ms
          scheduler.advanceTimeBy(250, TimeUnit.MILLISECONDS);
          source.onNext(4); // T: 750ms
          scheduler.advanceTimeBy(250, TimeUnit.MILLISECONDS);
          source.onNext(5); // T: 1000ms
          scheduler.advanceTimeBy(250, TimeUnit.MILLISECONDS);
          source.onComplete(); // T: 1250ms
  
          inOrder.verify(subscriber, times(1)).onNext(4);
          inOrder.verify(subscriber, times(1)).onNext(5);
          inOrder.verify(subscriber, times(1)).onComplete();
  
          verify(subscriber, never()).onError(any(Throwable.class));
      }
  
      @Test
      public void takeLastTimedThrowingSource() {
          TestScheduler scheduler = new TestScheduler();
  
          PublishProcessor<Object> source = PublishProcessor.create();
  
          Flowable<Object> result = source.takeLast(1, TimeUnit.SECONDS, scheduler);
  
          Subscriber<Object> subscriber = TestHelper.mockSubscriber();
  
          InOrder inOrder = inOrder(subscriber);
  
          result.subscribe(subscriber);
  
          source.onNext(1); // T: 0ms
          scheduler.advanceTimeBy(250, TimeUnit.MILLISECONDS);
          source.onNext(2); // T: 250ms
          scheduler.advanceTimeBy(250, TimeUnit.MILLISECONDS);
          source.onNext(3); // T: 500ms
          scheduler.advanceTimeBy(250, TimeUnit.MILLISECONDS);
          source.onNext(4); // T: 750ms
          scheduler.advanceTimeBy(250, TimeUnit.MILLISECONDS);
          source.onNext(5); // T: 1000ms
          scheduler.advanceTimeBy(250, TimeUnit.MILLISECONDS);
          source.onError(new TestException()); // T: 1250ms
  
          inOrder.verify(subscriber, times(1)).onError(any(TestException.class));
  
          verify(subscriber, never()).onNext(any());
          verify(subscriber, never()).onComplete();
      }
  
      @Test
      public void takeLastTimedWithZeroCapacity() {
          TestScheduler scheduler = new TestScheduler();
  
          PublishProcessor<Object> source = PublishProcessor.create();
  
          Flowable<Object> result = source.takeLast(0, 1, TimeUnit.SECONDS, scheduler);
  
          Subscriber<Object> subscriber = TestHelper.mockSubscriber();
  
          InOrder inOrder = inOrder(subscriber);
  
          result.subscribe(subscriber);
  
          source.onNext(1); // T: 0ms
          scheduler.advanceTimeBy(250, TimeUnit.MILLISECONDS);
          source.onNext(2); // T: 250ms
          scheduler.advanceTimeBy(250, TimeUnit.MILLISECONDS);
          source.onNext(3); // T: 500ms
          scheduler.advanceTimeBy(250, TimeUnit.MILLISECONDS);
          source.onNext(4); // T: 750ms
          scheduler.advanceTimeBy(250, TimeUnit.MILLISECONDS);
          source.onNext(5); // T: 1000ms
          scheduler.advanceTimeBy(250, TimeUnit.MILLISECONDS);
          source.onComplete(); // T: 1250ms
  
          inOrder.verify(subscriber, times(1)).onComplete();
  
          verify(subscriber, never()).onNext(any());
          verify(subscriber, never()).onError(any(Throwable.class));
      }
  
      @Test
      public void continuousDelivery() {
          TestScheduler scheduler = new TestScheduler();
  
          TestSubscriber<Integer> ts = new TestSubscriber<>(0L);
  
          PublishProcessor<Integer> pp = PublishProcessor.create();
  
          pp.takeLast(1000, TimeUnit.MILLISECONDS, scheduler).subscribe(ts);
  
          pp.onNext(1);
          scheduler.advanceTimeBy(500, TimeUnit.MILLISECONDS);
          pp.onNext(2);
          scheduler.advanceTimeBy(500, TimeUnit.MILLISECONDS);
          pp.onNext(3);
          scheduler.advanceTimeBy(500, TimeUnit.MILLISECONDS);
          pp.onNext(4);
          scheduler.advanceTimeBy(500, TimeUnit.MILLISECONDS);
          pp.onComplete();
          scheduler.advanceTimeBy(500, TimeUnit.MILLISECONDS);
  
          ts.assertNoValues();
  
          ts.request(1);
  
          ts.assertValue(3);
  
          scheduler.advanceTimeBy(500, TimeUnit.MILLISECONDS);
          ts.request(1);
  
          ts.assertValues(3, 4);
          ts.assertComplete();
          ts.assertNoErrors();
  
      }
  
      @Test
      public void takeLastTimeAndSize() {
          Flowable.just(1, 2)
          .takeLast(1, 1, TimeUnit.MINUTES)
          .test()
          .assertResult(2);
      }
  
      @Test
      public void takeLastTime() {
          Flowable.just(1, 2)
          .takeLast(1, TimeUnit.MINUTES)
          .test()
          .assertResult(1, 2);
      }
  
      @Test
      public void takeLastTimeDelayError() {
          Flowable.just(1, 2).concatWith(Flowable.<Integer>error(new TestException()))
          .takeLast(1, TimeUnit.MINUTES, true)
          .test()
          .assertFailure(TestException.class, 1, 2);
      }
  
      @Test
      public void takeLastTimeDelayErrorCustomScheduler() {
          Flowable.just(1, 2).concatWith(Flowable.<Integer>error(new TestException()))
          .takeLast(1, TimeUnit.MINUTES, Schedulers.io(), true)
          .test()
          .assertFailure(TestException.class, 1, 2);
      }
  
      @Test
      public void disposed() {
          TestHelper.checkDisposed(PublishProcessor.create().takeLast(1, TimeUnit.MINUTES));
      }
  
      @Test
      public void observeOn() {
          Observable.range(1, 1000)
          .takeLast(1, TimeUnit.DAYS)
          .take(500)
          .observeOn(Schedulers.single(), true, 1)
          .to(TestHelper.<Integer>testConsumer())
          .awaitDone(5, TimeUnit.SECONDS)
          .assertSubscribed()
          .assertValueCount(500)
          .assertNoErrors()
          .assertComplete();
      }
  
      @Test
      public void cancelCompleteRace() {
          for (int i = 0; i < TestHelper.RACE_DEFAULT_LOOPS; i++) {
              final PublishProcessor<Integer> pp = PublishProcessor.create();
  
              final TestSubscriber<Integer> ts = pp.takeLast(1, TimeUnit.DAYS).test();
  
              Runnable r1 = new Runnable() {
                  @Override
                  public void run() {
                      pp.onComplete();
                  }
              };
  
              Runnable r2 = new Runnable() {
                  @Override
                  public void run() {
                      ts.cancel();
                  }
              };
  
              TestHelper.race(r1, r2);
          }
      }
  
      @Test
      public void emptyDelayError() {
          Flowable.empty()
          .takeLast(1, TimeUnit.DAYS, true)
          .test()
          .assertResult();
      }
  
      @Test
      public void doubleOnSubscribe() {
          TestHelper.checkDoubleOnSubscribeFlowable(new Function<Flowable<Object>, Publisher<Object>>() {
              @Override
              public Publisher<Object> apply(Flowable<Object> f) throws Exception {
                  return f.takeLast(1, TimeUnit.SECONDS);
              }
          });
      }
  
      @Test
      public void badRequest() {
          TestHelper.assertBadRequestReported(PublishProcessor.create().takeLast(1, TimeUnit.SECONDS));
      }
  
      @Test
      public void lastWindowIsFixedInTime() {
          TimesteppingScheduler scheduler = new TimesteppingScheduler();
          scheduler.stepEnabled = false;
  
          PublishProcessor<Integer> pp = PublishProcessor.create();
  
          TestSubscriber<Integer> ts = pp
          .takeLast(2, TimeUnit.SECONDS, scheduler)
          .test();
  
          pp.onNext(1);
          pp.onNext(2);
          pp.onNext(3);
          pp.onNext(4);
  
          scheduler.stepEnabled = true;
  
          pp.onComplete();
  
          ts.assertResult(1, 2, 3, 4);
      }
  }
  