/**
* 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.junit.Assert.assertEquals;
import static org.mockito.Matchers.any;
import static org.mockito.Mockito.never;
import static org.mockito.Mockito.times;
import static org.mockito.Mockito.verify;
import org.junit.Before;
import org.junit.Test;
import org.mockito.Mock;
import org.mockito.MockitoAnnotations;
import rx.Observable;
import rx.Observer;
import rx.exceptions.TestException;
import rx.functions.Func1;
import rx.functions.Func2;
import rx.internal.util.UtilityFunctions;
public class OperatorReduceTest {
@Mock
Observer<Object> observer;
@Before
public void before() {
MockitoAnnotations.initMocks(this);
}
Func2<Integer, Integer, Integer> sum = new Func2<Integer, Integer, Integer>() {
@Override
public Integer call(Integer t1, Integer t2) {
return t1 + t2;
}
};
@Test
public void testAggregateAsIntSum() {
Observable<Integer> result = Observable.just(1, 2, 3, 4, 5).reduce(0, sum).map(UtilityFunctions.<Integer> identity());
result.subscribe(observer);
verify(observer).onNext(1 + 2 + 3 + 4 + 5);
verify(observer).onCompleted();
verify(observer, never()).onError(any(Throwable.class));
}
@Test
public void testAggregateAsIntSumSourceThrows() {
Observable<Integer> result = Observable.concat(Observable.just(1, 2, 3, 4, 5),
Observable.<Integer> error(new TestException()))
.reduce(0, sum).map(UtilityFunctions.<Integer> identity());
result.subscribe(observer);
verify(observer, never()).onNext(any());
verify(observer, never()).onCompleted();
verify(observer, times(1)).onError(any(TestException.class));
}
@Test
public void testAggregateAsIntSumAccumulatorThrows() {
Func2<Integer, Integer, Integer> sumErr = new Func2<Integer, Integer, Integer>() {
@Override
public Integer call(Integer t1, Integer t2) {
throw new TestException();
}
};
Observable<Integer> result = Observable.just(1, 2, 3, 4, 5)
.reduce(0, sumErr).map(UtilityFunctions.<Integer> identity());
result.subscribe(observer);
verify(observer, never()).onNext(any());
verify(observer, never()).onCompleted();
verify(observer, times(1)).onError(any(TestException.class));
}
@Test
public void testAggregateAsIntSumResultSelectorThrows() {
Func1<Integer, Integer> error = new Func1<Integer, Integer>() {
@Override
public Integer call(Integer t1) {
throw new TestException();
}
};
Observable<Integer> result = Observable.just(1, 2, 3, 4, 5)
.reduce(0, sum).map(error);
result.subscribe(observer);
verify(observer, never()).onNext(any());
verify(observer, never()).onCompleted();
verify(observer, times(1)).onError(any(TestException.class));
}
@Test
public void testBackpressureWithNoInitialValue() throws InterruptedException {
Observable<Integer> source = Observable.just(1, 2, 3, 4, 5, 6);
Observable<Integer> reduced = source.reduce(sum);
Integer r = reduced.toBlocking().first();
assertEquals(21, r.intValue());
}
@Test
public void testBackpressureWithInitialValue() throws InterruptedException {
Observable<Integer> source = Observable.just(1, 2, 3, 4, 5, 6);
Observable<Integer> reduced = source.reduce(0, sum);
Integer r = reduced.toBlocking().first();
assertEquals(21, r.intValue());
}
}