/**
* 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.internal.operators.flowable;
import static org.junit.Assert.*;
import static org.mockito.ArgumentMatchers.any;
import static org.mockito.Mockito.*;
import java.io.IOException;
import java.util.List;
import java.util.concurrent.TimeUnit;
import org.junit.*;
import org.reactivestreams.*;
import io.reactivex.*;
import io.reactivex.exceptions.TestException;
import io.reactivex.functions.*;
import io.reactivex.internal.functions.Functions;
import io.reactivex.internal.subscriptions.BooleanSubscription;
import io.reactivex.observers.TestObserver;
import io.reactivex.plugins.RxJavaPlugins;
import io.reactivex.subscribers.TestSubscriber;
public class FlowableAnyTest {
@Test
public void testAnyWithTwoItems() {
Flowable<Integer> w = Flowable.just(1, 2);
Single<Boolean> observable = w.any(new Predicate<Integer>() {
@Override
public boolean test(Integer v) {
return true;
}
});
SingleObserver<Boolean> observer = TestHelper.mockSingleObserver();
observable.subscribe(observer);
verify(observer, never()).onSuccess(false);
verify(observer, times(1)).onSuccess(true);
verify(observer, never()).onError(any(Throwable.class));
}
@Test
public void testIsEmptyWithTwoItems() {
Flowable<Integer> w = Flowable.just(1, 2);
Single<Boolean> observable = w.isEmpty();
SingleObserver<Boolean> observer = TestHelper.mockSingleObserver();
observable.subscribe(observer);
verify(observer, never()).onSuccess(true);
verify(observer, times(1)).onSuccess(false);
verify(observer, never()).onError(any(Throwable.class));
}
@Test
public void testAnyWithOneItem() {
Flowable<Integer> w = Flowable.just(1);
Single<Boolean> observable = w.any(new Predicate<Integer>() {
@Override
public boolean test(Integer v) {
return true;
}
});
SingleObserver<Boolean> observer = TestHelper.mockSingleObserver();
observable.subscribe(observer);
verify(observer, never()).onSuccess(false);
verify(observer, times(1)).onSuccess(true);
verify(observer, never()).onError(any(Throwable.class));
}
@Test
public void testIsEmptyWithOneItem() {
Flowable<Integer> w = Flowable.just(1);
Single<Boolean> observable = w.isEmpty();
SingleObserver<Boolean> observer = TestHelper.mockSingleObserver();
observable.subscribe(observer);
verify(observer, never()).onSuccess(true);
verify(observer, times(1)).onSuccess(false);
verify(observer, never()).onError(any(Throwable.class));
}
@Test
public void testAnyWithEmpty() {
Flowable<Integer> w = Flowable.empty();
Single<Boolean> observable = w.any(new Predicate<Integer>() {
@Override
public boolean test(Integer v) {
return true;
}
});
SingleObserver<Boolean> observer = TestHelper.mockSingleObserver();
observable.subscribe(observer);
verify(observer, times(1)).onSuccess(false);
verify(observer, never()).onSuccess(true);
verify(observer, never()).onError(any(Throwable.class));
}
@Test
public void testIsEmptyWithEmpty() {
Flowable<Integer> w = Flowable.empty();
Single<Boolean> observable = w.isEmpty();
SingleObserver<Boolean> observer = TestHelper.mockSingleObserver();
observable.subscribe(observer);
verify(observer, times(1)).onSuccess(true);
verify(observer, never()).onSuccess(false);
verify(observer, never()).onError(any(Throwable.class));
}
@Test
public void testAnyWithPredicate1() {
Flowable<Integer> w = Flowable.just(1, 2, 3);
Single<Boolean> observable = w.any(new Predicate<Integer>() {
@Override
public boolean test(Integer t1) {
return t1 < 2;
}
});
SingleObserver<Boolean> observer = TestHelper.mockSingleObserver();
observable.subscribe(observer);
verify(observer, never()).onSuccess(false);
verify(observer, times(1)).onSuccess(true);
verify(observer, never()).onError(any(Throwable.class));
}
@Test
public void testExists1() {
Flowable<Integer> w = Flowable.just(1, 2, 3);
Single<Boolean> observable = w.any(new Predicate<Integer>() {
@Override
public boolean test(Integer t1) {
return t1 < 2;
}
});
SingleObserver<Boolean> observer = TestHelper.mockSingleObserver();
observable.subscribe(observer);
verify(observer, never()).onSuccess(false);
verify(observer, times(1)).onSuccess(true);
verify(observer, never()).onError(any(Throwable.class));
}
@Test
public void testAnyWithPredicate2() {
Flowable<Integer> w = Flowable.just(1, 2, 3);
Single<Boolean> observable = w.any(new Predicate<Integer>() {
@Override
public boolean test(Integer t1) {
return t1 < 1;
}
});
SingleObserver<Boolean> observer = TestHelper.mockSingleObserver();
observable.subscribe(observer);
verify(observer, times(1)).onSuccess(false);
verify(observer, never()).onSuccess(true);
verify(observer, never()).onError(any(Throwable.class));
}
@Test
public void testAnyWithEmptyAndPredicate() {
// If the source is empty, always output false.
Flowable<Integer> w = Flowable.empty();
Single<Boolean> observable = w.any(new Predicate<Integer>() {
@Override
public boolean test(Integer t) {
return true;
}
});
SingleObserver<Boolean> observer = TestHelper.mockSingleObserver();
observable.subscribe(observer);
verify(observer, times(1)).onSuccess(false);
verify(observer, never()).onSuccess(true);
verify(observer, never()).onError(any(Throwable.class));
}
@Test
public void testWithFollowingFirst() {
Flowable<Integer> o = Flowable.fromArray(1, 3, 5, 6);
Single<Boolean> anyEven = o.any(new Predicate<Integer>() {
@Override
public boolean test(Integer i) {
return i % 2 == 0;
}
});
assertTrue(anyEven.blockingGet());
}
@Test(timeout = 5000)
public void testIssue1935NoUnsubscribeDownstream() {
Flowable<Integer> source = Flowable.just(1).isEmpty()
.flatMapPublisher(new Function<Boolean, Publisher<Integer>>() {
@Override
public Publisher<Integer> apply(Boolean t1) {
return Flowable.just(2).delay(500, TimeUnit.MILLISECONDS);
}
});
assertEquals((Object)2, source.blockingFirst());
}
@Test
@Ignore("Single doesn't do backpressure")
public void testBackpressureIfNoneRequestedNoneShouldBeDelivered() {
TestObserver<Boolean> ts = new TestObserver<Boolean>();
Flowable.just(1).any(new Predicate<Integer>() {
@Override
public boolean test(Integer t) {
return true;
}
})
.subscribe(ts);
ts.assertNoValues();
ts.assertNoErrors();
ts.assertNotComplete();
}
@Test
public void testBackpressureIfOneRequestedOneShouldBeDelivered() {
TestObserver<Boolean> ts = new TestObserver<Boolean>();
Flowable.just(1).any(new Predicate<Integer>() {
@Override
public boolean test(Integer v) {
return true;
}
}).subscribe(ts);
ts.assertTerminated();
ts.assertNoErrors();
ts.assertComplete();
ts.assertValue(true);
}
@Test
public void testPredicateThrowsExceptionAndValueInCauseMessage() {
TestObserver<Boolean> ts = new TestObserver<Boolean>();
final IllegalArgumentException ex = new IllegalArgumentException();
Flowable.just("Boo!").any(new Predicate<String>() {
@Override
public boolean test(String v) {
throw ex;
}
}).subscribe(ts);
ts.assertTerminated();
ts.assertNoValues();
ts.assertNotComplete();
ts.assertError(ex);
// FIXME value as last cause?
// assertTrue(ex.getCause().getMessage().contains("Boo!"));
}
@Test
public void testAnyWithTwoItemsFlowable() {
Flowable<Integer> w = Flowable.just(1, 2);
Flowable<Boolean> observable = w.any(new Predicate<Integer>() {
@Override
public boolean test(Integer v) {
return true;
}
})
.toFlowable()
;
Subscriber<Boolean> observer = TestHelper.mockSubscriber();
observable.subscribe(observer);
verify(observer, never()).onNext(false);
verify(observer, times(1)).onNext(true);
verify(observer, never()).onError(any(Throwable.class));
verify(observer, times(1)).onComplete();
}
@Test
public void testIsEmptyWithTwoItemsFlowable() {
Flowable<Integer> w = Flowable.just(1, 2);
Flowable<Boolean> observable = w.isEmpty().toFlowable();
Subscriber<Boolean> observer = TestHelper.mockSubscriber();
observable.subscribe(observer);
verify(observer, never()).onNext(true);
verify(observer, times(1)).onNext(false);
verify(observer, never()).onError(any(Throwable.class));
verify(observer, times(1)).onComplete();
}
@Test
public void testAnyWithOneItemFlowable() {
Flowable<Integer> w = Flowable.just(1);
Flowable<Boolean> observable = w.any(new Predicate<Integer>() {
@Override
public boolean test(Integer v) {
return true;
}
}).toFlowable();
Subscriber<Boolean> observer = TestHelper.mockSubscriber();
observable.subscribe(observer);
verify(observer, never()).onNext(false);
verify(observer, times(1)).onNext(true);
verify(observer, never()).onError(any(Throwable.class));
verify(observer, times(1)).onComplete();
}
@Test
public void testIsEmptyWithOneItemFlowable() {
Flowable<Integer> w = Flowable.just(1);
Single<Boolean> observable = w.isEmpty();
SingleObserver<Boolean> observer = TestHelper.mockSingleObserver();
observable.subscribe(observer);
verify(observer, never()).onSuccess(true);
verify(observer, times(1)).onSuccess(false);
verify(observer, never()).onError(any(Throwable.class));
}
@Test
public void testAnyWithEmptyFlowable() {
Flowable<Integer> w = Flowable.empty();
Flowable<Boolean> observable = w.any(new Predicate<Integer>() {
@Override
public boolean test(Integer v) {
return true;
}
}).toFlowable();
Subscriber<Boolean> observer = TestHelper.mockSubscriber();
observable.subscribe(observer);
verify(observer, times(1)).onNext(false);
verify(observer, never()).onNext(true);
verify(observer, never()).onError(any(Throwable.class));
verify(observer, times(1)).onComplete();
}
@Test
public void testIsEmptyWithEmptyFlowable() {
Flowable<Integer> w = Flowable.empty();
Flowable<Boolean> observable = w.isEmpty().toFlowable();
Subscriber<Boolean> observer = TestHelper.mockSubscriber();
observable.subscribe(observer);
verify(observer, times(1)).onNext(true);
verify(observer, never()).onNext(false);
verify(observer, never()).onError(any(Throwable.class));
verify(observer, times(1)).onComplete();
}
@Test
public void testAnyWithPredicate1Flowable() {
Flowable<Integer> w = Flowable.just(1, 2, 3);
Flowable<Boolean> observable = w.any(new Predicate<Integer>() {
@Override
public boolean test(Integer t1) {
return t1 < 2;
}
}).toFlowable();
Subscriber<Boolean> observer = TestHelper.mockSubscriber();
observable.subscribe(observer);
verify(observer, never()).onNext(false);
verify(observer, times(1)).onNext(true);
verify(observer, never()).onError(any(Throwable.class));
verify(observer, times(1)).onComplete();
}
@Test
public void testExists1Flowable() {
Flowable<Integer> w = Flowable.just(1, 2, 3);
Flowable<Boolean> observable = w.any(new Predicate<Integer>() {
@Override
public boolean test(Integer t1) {
return t1 < 2;
}
}).toFlowable();
Subscriber<Boolean> observer = TestHelper.mockSubscriber();
observable.subscribe(observer);
verify(observer, never()).onNext(false);
verify(observer, times(1)).onNext(true);
verify(observer, never()).onError(any(Throwable.class));
verify(observer, times(1)).onComplete();
}
@Test
public void testAnyWithPredicate2Flowable() {
Flowable<Integer> w = Flowable.just(1, 2, 3);
Flowable<Boolean> observable = w.any(new Predicate<Integer>() {
@Override
public boolean test(Integer t1) {
return t1 < 1;
}
}).toFlowable();
Subscriber<Boolean> observer = TestHelper.mockSubscriber();
observable.subscribe(observer);
verify(observer, times(1)).onNext(false);
verify(observer, never()).onNext(true);
verify(observer, never()).onError(any(Throwable.class));
verify(observer, times(1)).onComplete();
}
@Test
public void testAnyWithEmptyAndPredicateFlowable() {
// If the source is empty, always output false.
Flowable<Integer> w = Flowable.empty();
Flowable<Boolean> observable = w.any(new Predicate<Integer>() {
@Override
public boolean test(Integer t) {
return true;
}
}).toFlowable();
Subscriber<Boolean> observer = TestHelper.mockSubscriber();
observable.subscribe(observer);
verify(observer, times(1)).onNext(false);
verify(observer, never()).onNext(true);
verify(observer, never()).onError(any(Throwable.class));
verify(observer, times(1)).onComplete();
}
@Test
public void testWithFollowingFirstFlowable() {
Flowable<Integer> o = Flowable.fromArray(1, 3, 5, 6);
Flowable<Boolean> anyEven = o.any(new Predicate<Integer>() {
@Override
public boolean test(Integer i) {
return i % 2 == 0;
}
}).toFlowable();
assertTrue(anyEven.blockingFirst());
}
@Test(timeout = 5000)
public void testIssue1935NoUnsubscribeDownstreamFlowable() {
Flowable<Integer> source = Flowable.just(1).isEmpty()
.flatMapPublisher(new Function<Boolean, Publisher<Integer>>() {
@Override
public Publisher<Integer> apply(Boolean t1) {
return Flowable.just(2).delay(500, TimeUnit.MILLISECONDS);
}
});
assertEquals((Object)2, source.blockingFirst());
}
@Test
public void testBackpressureIfNoneRequestedNoneShouldBeDeliveredFlowable() {
TestSubscriber<Boolean> ts = new TestSubscriber<Boolean>(0L);
Flowable.just(1).any(new Predicate<Integer>() {
@Override
public boolean test(Integer t) {
return true;
}
}).toFlowable()
.subscribe(ts);
ts.assertNoValues();
ts.assertNoErrors();
ts.assertNotComplete();
}
@Test
public void testBackpressureIfOneRequestedOneShouldBeDeliveredFlowable() {
TestSubscriber<Boolean> ts = new TestSubscriber<Boolean>(1L);
Flowable.just(1).any(new Predicate<Integer>() {
@Override
public boolean test(Integer v) {
return true;
}
}).toFlowable().subscribe(ts);
ts.assertTerminated();
ts.assertNoErrors();
ts.assertComplete();
ts.assertValue(true);
}
@Test
public void testPredicateThrowsExceptionAndValueInCauseMessageFlowable() {
TestSubscriber<Boolean> ts = new TestSubscriber<Boolean>();
final IllegalArgumentException ex = new IllegalArgumentException();
Flowable.just("Boo!").any(new Predicate<String>() {
@Override
public boolean test(String v) {
throw ex;
}
}).toFlowable().subscribe(ts);
ts.assertTerminated();
ts.assertNoValues();
ts.assertNotComplete();
ts.assertError(ex);
// FIXME value as last cause?
// assertTrue(ex.getCause().getMessage().contains("Boo!"));
}
@Test
public void dispose() {
TestHelper.checkDisposed(Flowable.just(1).any(Functions.alwaysTrue()).toFlowable());
TestHelper.checkDisposed(Flowable.just(1).any(Functions.alwaysTrue()));
}
@Test
public void doubleOnSubscribe() {
TestHelper.checkDoubleOnSubscribeFlowable(new Function<Flowable<Object>, Publisher<Boolean>>() {
@Override
public Publisher<Boolean> apply(Flowable<Object> o) throws Exception {
return o.any(Functions.alwaysTrue()).toFlowable();
}
});
TestHelper.checkDoubleOnSubscribeFlowableToSingle(new Function<Flowable<Object>, Single<Boolean>>() {
@Override
public Single<Boolean> apply(Flowable<Object> o) throws Exception {
return o.any(Functions.alwaysTrue());
}
});
}
@Test
public void predicateThrowsSuppressOthers() {
List<Throwable> errors = TestHelper.trackPluginErrors();
try {
new Flowable<Integer>() {
@Override
protected void subscribeActual(Subscriber<? super Integer> observer) {
observer.onSubscribe(new BooleanSubscription());
observer.onNext(1);
observer.onNext(2);
observer.onError(new IOException());
observer.onComplete();
}
}
.any(new Predicate<Integer>() {
@Override
public boolean test(Integer v) throws Exception {
throw new TestException();
}
})
.toFlowable()
.test()
.assertFailure(TestException.class);
TestHelper.assertUndeliverable(errors, 0, IOException.class);
} finally {
RxJavaPlugins.reset();
}
}
@Test
public void badSourceSingle() {
List<Throwable> errors = TestHelper.trackPluginErrors();
try {
new Flowable<Integer>() {
@Override
protected void subscribeActual(Subscriber<? super Integer> observer) {
observer.onSubscribe(new BooleanSubscription());
observer.onError(new TestException("First"));
observer.onNext(1);
observer.onError(new TestException("Second"));
observer.onComplete();
}
}
.any(Functions.alwaysTrue())
.test()
.assertFailureAndMessage(TestException.class, "First");
TestHelper.assertUndeliverable(errors, 0, TestException.class, "Second");
} finally {
RxJavaPlugins.reset();
}
}
}