/**
* 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.*;
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.Subscriber;
import rx.exceptions.OnErrorNotImplementedException;
import rx.functions.Action1;
import rx.functions.Func1;
import java.util.List;
import java.util.concurrent.atomic.AtomicInteger;
public class OperatorDoOnEachTest {
@Mock
Observer<String> subscribedObserver;
@Mock
Observer<String> sideEffectObserver;
@Before
public void before() {
MockitoAnnotations.initMocks(this);
}
@Test
public void testDoOnEach() {
Observable<String> base = Observable.just("a", "b", "c");
Observable<String> doOnEach = base.doOnEach(sideEffectObserver);
doOnEach.subscribe(subscribedObserver);
// ensure the leaf observer is still getting called
verify(subscribedObserver, never()).onError(any(Throwable.class));
verify(subscribedObserver, times(1)).onNext("a");
verify(subscribedObserver, times(1)).onNext("b");
verify(subscribedObserver, times(1)).onNext("c");
verify(subscribedObserver, times(1)).onCompleted();
// ensure our injected observer is getting called
verify(sideEffectObserver, never()).onError(any(Throwable.class));
verify(sideEffectObserver, times(1)).onNext("a");
verify(sideEffectObserver, times(1)).onNext("b");
verify(sideEffectObserver, times(1)).onNext("c");
verify(sideEffectObserver, times(1)).onCompleted();
}
@Test
public void testDoOnEachWithError() {
Observable<String> base = Observable.just("one", "fail", "two", "three", "fail");
Observable<String> errs = base.map(new Func1<String, String>() {
@Override
public String call(String s) {
if ("fail".equals(s)) {
throw new RuntimeException("Forced Failure");
}
return s;
}
});
Observable<String> doOnEach = errs.doOnEach(sideEffectObserver);
doOnEach.subscribe(subscribedObserver);
verify(subscribedObserver, times(1)).onNext("one");
verify(subscribedObserver, never()).onNext("two");
verify(subscribedObserver, never()).onNext("three");
verify(subscribedObserver, never()).onCompleted();
verify(subscribedObserver, times(1)).onError(any(Throwable.class));
verify(sideEffectObserver, times(1)).onNext("one");
verify(sideEffectObserver, never()).onNext("two");
verify(sideEffectObserver, never()).onNext("three");
verify(sideEffectObserver, never()).onCompleted();
verify(sideEffectObserver, times(1)).onError(any(Throwable.class));
}
@Test
public void testDoOnEachWithErrorInCallback() {
Observable<String> base = Observable.just("one", "two", "fail", "three");
Observable<String> doOnEach = base.doOnNext(new Action1<String>() {
@Override
public void call(String s) {
if ("fail".equals(s)) {
throw new RuntimeException("Forced Failure");
}
}
});
doOnEach.subscribe(subscribedObserver);
verify(subscribedObserver, times(1)).onNext("one");
verify(subscribedObserver, times(1)).onNext("two");
verify(subscribedObserver, never()).onNext("three");
verify(subscribedObserver, never()).onCompleted();
verify(subscribedObserver, times(1)).onError(any(Throwable.class));
}
@Test
public void testIssue1451Case1() {
// https://github.com/Netflix/RxJava/issues/1451
int[] nums = { 1, 2, 3 };
final AtomicInteger count = new AtomicInteger();
for (final int n : nums) {
Observable
.just(Boolean.TRUE, Boolean.FALSE)
.takeWhile(new Func1<Boolean, Boolean>() {
@Override
public Boolean call(Boolean value) {
return value;
}
})
.toList()
.doOnNext(new Action1<List<Boolean>>() {
@Override
public void call(List<Boolean> booleans) {
count.incrementAndGet();
}
})
.subscribe();
}
assertEquals(nums.length, count.get());
}
@Test
public void testIssue1451Case2() {
// https://github.com/Netflix/RxJava/issues/1451
int[] nums = { 1, 2, 3 };
final AtomicInteger count = new AtomicInteger();
for (final int n : nums) {
Observable
.just(Boolean.TRUE, Boolean.FALSE, Boolean.FALSE)
.takeWhile(new Func1<Boolean, Boolean>() {
@Override
public Boolean call(Boolean value) {
return value;
}
})
.toList()
.doOnNext(new Action1<List<Boolean>>() {
@Override
public void call(List<Boolean> booleans) {
count.incrementAndGet();
}
})
.subscribe();
}
assertEquals(nums.length, count.get());
}
@Test
public void testFatalError() {
try {
Observable.just(1, 2, 3)
.flatMap(new Func1<Integer, Observable<?>>() {
@Override
public Observable<?> call(Integer integer) {
return Observable.create(new Observable.OnSubscribe<Object>() {
@Override
public void call(Subscriber<Object> o) {
throw new NullPointerException("Test NPE");
}
});
}
})
.doOnNext(new Action1<Object>() {
@Override
public void call(Object o) {
System.out.println("Won't come here");
}
})
.subscribe();
fail("should have thrown an exception");
} catch (OnErrorNotImplementedException e) {
assertTrue(e.getCause() instanceof NullPointerException);
assertEquals(e.getCause().getMessage(), "Test NPE");
System.out.println("Received exception: " + e);
}
}
}