/**
    * Copyright 2014 Netflix, Inc.
    * 
    * 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 rx.internal.operators;
  
  import static org.mockito.Matchers.any;
  import static org.mockito.Mockito.*;
  
  import java.util.Arrays;
  
  import org.junit.*;
  
  import rx.*;
  import rx.exceptions.TestException;
  import rx.functions.Func1;
  import rx.internal.util.UtilityFunctions;
  import rx.observers.TestSubscriber;
  ;
  
  public class OperatorTakeUntilPredicateTest {
      @Test
      public void takeEmpty() {
          @SuppressWarnings("unchecked")
          Observer<Object> o = mock(Observer.class);
          
          Observable.empty().takeUntil(UtilityFunctions.alwaysTrue()).subscribe(o);
          
          verify(o, never()).onNext(any());
          verify(o, never()).onError(any(Throwable.class));
          verify(o).onCompleted();
      }
      @Test
      public void takeAll() {
          @SuppressWarnings("unchecked")
          Observer<Object> o = mock(Observer.class);
          
          Observable.just(1, 2).takeUntil(UtilityFunctions.alwaysFalse()).subscribe(o);
          
          verify(o).onNext(1);
          verify(o).onNext(2);
          verify(o, never()).onError(any(Throwable.class));
          verify(o).onCompleted();
      }
      @Test
      public void takeFirst() {
          @SuppressWarnings("unchecked")
          Observer<Object> o = mock(Observer.class);
          
          Observable.just(1, 2).takeUntil(UtilityFunctions.alwaysTrue()).subscribe(o);
          
          verify(o).onNext(1);
          verify(o, never()).onNext(2);
          verify(o, never()).onError(any(Throwable.class));
          verify(o).onCompleted();
      }
      @Test
      public void takeSome() {
          @SuppressWarnings("unchecked")
          Observer<Object> o = mock(Observer.class);
          
          Observable.just(1, 2, 3).takeUntil(new Func1<Integer, Boolean>() {
              @Override
              public Boolean call(Integer t1) {
                  return t1 == 2;
              }
          }).subscribe(o);
          
          verify(o).onNext(1);
          verify(o).onNext(2);
          verify(o, never()).onNext(3);
          verify(o, never()).onError(any(Throwable.class));
          verify(o).onCompleted();
      }
      @Test
      public void functionThrows() {
          @SuppressWarnings("unchecked")
          Observer<Object> o = mock(Observer.class);
          
          Observable.just(1, 2, 3).takeUntil(new Func1<Integer, Boolean>() {
              @Override
              public Boolean call(Integer t1) {
                  throw new TestException("Forced failure");
              }
          }).subscribe(o);
          
          verify(o).onNext(1);
         verify(o, never()).onNext(2);
         verify(o, never()).onNext(3);
         verify(o).onError(any(TestException.class));
         verify(o, never()).onCompleted();
     }
     @Test
     public void sourceThrows() {
         @SuppressWarnings("unchecked")
         Observer<Object> o = mock(Observer.class);
         
         Observable.just(1)
         .concatWith(Observable.<Integer>error(new TestException()))
         .concatWith(Observable.just(2))
         .takeUntil(UtilityFunctions.alwaysFalse()).subscribe(o);
         
         verify(o).onNext(1);
         verify(o, never()).onNext(2);
         verify(o).onError(any(TestException.class));
         verify(o, never()).onCompleted();
     }
     @Test
     public void backpressure() {
         TestSubscriber<Integer> ts = new TestSubscriber<Integer>() {
             @Override
             public void onStart() {
                 request(5);
             }
         };
         
         Observable.range(1, 1000).takeUntil(UtilityFunctions.alwaysFalse()).subscribe(ts);
         
         ts.assertNoErrors();
         ts.assertReceivedOnNext(Arrays.asList(1, 2, 3, 4, 5));
         Assert.assertEquals(0, ts.getOnCompletedEvents().size());
     }
 }