/**
* 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.Matchers.anyInt;
import static org.mockito.Mockito.inOrder;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.never;
import static org.mockito.Mockito.times;
import static org.mockito.Mockito.verify;
import org.junit.Test;
import org.mockito.InOrder;
import rx.Observable;
import rx.Observer;
import rx.functions.Func1;
import rx.functions.Func2;
public class OperatorSkipWhileTest {
@SuppressWarnings("unchecked")
Observer<Integer> w = mock(Observer.class);
private static final Func1<Integer, Boolean> LESS_THAN_FIVE = new Func1<Integer, Boolean>() {
@Override
public Boolean call(Integer v) {
if (v == 42)
throw new RuntimeException("that's not the answer to everything!");
return v < 5;
}
};
private static final Func1<Integer, Boolean> INDEX_LESS_THAN_THREE = new Func1<Integer, Boolean>() {
int index = 0;
@Override
public Boolean call(Integer value) {
return index++ < 3;
}
};
@Test
public void testSkipWithIndex() {
Observable<Integer> src = Observable.just(1, 2, 3, 4, 5);
src.skipWhile(INDEX_LESS_THAN_THREE).subscribe(w);
InOrder inOrder = inOrder(w);
inOrder.verify(w, times(1)).onNext(4);
inOrder.verify(w, times(1)).onNext(5);
inOrder.verify(w, times(1)).onCompleted();
inOrder.verify(w, never()).onError(any(Throwable.class));
}
@Test
public void testSkipEmpty() {
Observable<Integer> src = Observable.empty();
src.skipWhile(LESS_THAN_FIVE).subscribe(w);
verify(w, never()).onNext(anyInt());
verify(w, never()).onError(any(Throwable.class));
verify(w, times(1)).onCompleted();
}
@Test
public void testSkipEverything() {
Observable<Integer> src = Observable.just(1, 2, 3, 4, 3, 2, 1);
src.skipWhile(LESS_THAN_FIVE).subscribe(w);
verify(w, never()).onNext(anyInt());
verify(w, never()).onError(any(Throwable.class));
verify(w, times(1)).onCompleted();
}
@Test
public void testSkipNothing() {
Observable<Integer> src = Observable.just(5, 3, 1);
src.skipWhile(LESS_THAN_FIVE).subscribe(w);
InOrder inOrder = inOrder(w);
inOrder.verify(w, times(1)).onNext(5);
inOrder.verify(w, times(1)).onNext(3);
inOrder.verify(w, times(1)).onNext(1);
inOrder.verify(w, times(1)).onCompleted();
inOrder.verify(w, never()).onError(any(Throwable.class));
}
@Test
public void testSkipSome() {
Observable<Integer> src = Observable.just(1, 2, 3, 4, 5, 3, 1, 5);
src.skipWhile(LESS_THAN_FIVE).subscribe(w);
InOrder inOrder = inOrder(w);
inOrder.verify(w, times(1)).onNext(5);
inOrder.verify(w, times(1)).onNext(3);
inOrder.verify(w, times(1)).onNext(1);
inOrder.verify(w, times(1)).onNext(5);
inOrder.verify(w, times(1)).onCompleted();
inOrder.verify(w, never()).onError(any(Throwable.class));
}
@Test
public void testSkipError() {
Observable<Integer> src = Observable.just(1, 2, 42, 5, 3, 1);
src.skipWhile(LESS_THAN_FIVE).subscribe(w);
InOrder inOrder = inOrder(w);
inOrder.verify(w, never()).onNext(anyInt());
inOrder.verify(w, never()).onCompleted();
inOrder.verify(w, times(1)).onError(any(RuntimeException.class));
}
@Test
public void testSkipManySubscribers() {
Observable<Integer> src = Observable.range(1, 10).skipWhile(LESS_THAN_FIVE);
int n = 5;
for (int i = 0; i < n; i++) {
@SuppressWarnings("unchecked")
Observer<Object> o = mock(Observer.class);
InOrder inOrder = inOrder(o);
src.subscribe(o);
for (int j = 5; j < 10; j++) {
inOrder.verify(o).onNext(j);
}
inOrder.verify(o).onCompleted();
verify(o, never()).onError(any(Throwable.class));
}
}
}