/**
* 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.observers;
import static org.junit.Assert.*;
import java.util.*;
import org.junit.Test;
import io.reactivex.Observable;
import io.reactivex.Observer;
import io.reactivex.TestHelper;
import io.reactivex.disposables.*;
import io.reactivex.exceptions.*;
import io.reactivex.functions.*;
import io.reactivex.plugins.RxJavaPlugins;
import io.reactivex.subjects.PublishSubject;
public class LambdaObserverTest {
@Test
public void onSubscribeThrows() {
final List<Object> received = new ArrayList<Object>();
LambdaObserver<Object> o = new LambdaObserver<Object>(new Consumer<Object>() {
@Override
public void accept(Object v) throws Exception {
received.add(v);
}
},
new Consumer<Throwable>() {
@Override
public void accept(Throwable e) throws Exception {
received.add(e);
}
}, new Action() {
@Override
public void run() throws Exception {
received.add(100);
}
}, new Consumer<Disposable>() {
@Override
public void accept(Disposable s) throws Exception {
throw new TestException();
}
});
assertFalse(o.isDisposed());
Observable.just(1).subscribe(o);
assertTrue(received.toString(), received.get(0) instanceof TestException);
assertEquals(received.toString(), 1, received.size());
assertTrue(o.isDisposed());
}
@Test
public void onNextThrows() {
final List<Object> received = new ArrayList<Object>();
LambdaObserver<Object> o = new LambdaObserver<Object>(new Consumer<Object>() {
@Override
public void accept(Object v) throws Exception {
throw new TestException();
}
},
new Consumer<Throwable>() {
@Override
public void accept(Throwable e) throws Exception {
received.add(e);
}
}, new Action() {
@Override
public void run() throws Exception {
received.add(100);
}
}, new Consumer<Disposable>() {
@Override
public void accept(Disposable s) throws Exception {
}
});
assertFalse(o.isDisposed());
Observable.just(1).subscribe(o);
assertTrue(received.toString(), received.get(0) instanceof TestException);
assertEquals(received.toString(), 1, received.size());
assertTrue(o.isDisposed());
}
@Test
public void onErrorThrows() {
List<Throwable> errors = TestHelper.trackPluginErrors();
try {
final List<Object> received = new ArrayList<Object>();
LambdaObserver<Object> o = new LambdaObserver<Object>(new Consumer<Object>() {
@Override
public void accept(Object v) throws Exception {
received.add(v);
}
},
new Consumer<Throwable>() {
@Override
public void accept(Throwable e) throws Exception {
throw new TestException("Inner");
}
}, new Action() {
@Override
public void run() throws Exception {
received.add(100);
}
}, new Consumer<Disposable>() {
@Override
public void accept(Disposable s) throws Exception {
}
});
assertFalse(o.isDisposed());
Observable.<Integer>error(new TestException("Outer")).subscribe(o);
assertTrue(received.toString(), received.isEmpty());
assertTrue(o.isDisposed());
TestHelper.assertError(errors, 0, CompositeException.class);
List<Throwable> ce = TestHelper.compositeList(errors.get(0));
TestHelper.assertError(ce, 0, TestException.class, "Outer");
TestHelper.assertError(ce, 1, TestException.class, "Inner");
} finally {
RxJavaPlugins.reset();
}
}
@Test
public void onCompleteThrows() {
List<Throwable> errors = TestHelper.trackPluginErrors();
try {
final List<Object> received = new ArrayList<Object>();
LambdaObserver<Object> o = new LambdaObserver<Object>(new Consumer<Object>() {
@Override
public void accept(Object v) throws Exception {
received.add(v);
}
},
new Consumer<Throwable>() {
@Override
public void accept(Throwable e) throws Exception {
received.add(e);
}
}, new Action() {
@Override
public void run() throws Exception {
throw new TestException();
}
}, new Consumer<Disposable>() {
@Override
public void accept(Disposable s) throws Exception {
}
});
assertFalse(o.isDisposed());
Observable.<Integer>empty().subscribe(o);
assertTrue(received.toString(), received.isEmpty());
assertTrue(o.isDisposed());
TestHelper.assertUndeliverable(errors, 0, TestException.class);
} finally {
RxJavaPlugins.reset();
}
}
@Test
public void badSourceOnSubscribe() {
Observable<Integer> source = new Observable<Integer>() {
@Override
public void subscribeActual(Observer<? super Integer> s) {
Disposable s1 = Disposables.empty();
s.onSubscribe(s1);
Disposable s2 = Disposables.empty();
s.onSubscribe(s2);
assertFalse(s1.isDisposed());
assertTrue(s2.isDisposed());
s.onNext(1);
s.onComplete();
}
};
final List<Object> received = new ArrayList<Object>();
LambdaObserver<Object> o = new LambdaObserver<Object>(new Consumer<Object>() {
@Override
public void accept(Object v) throws Exception {
received.add(v);
}
},
new Consumer<Throwable>() {
@Override
public void accept(Throwable e) throws Exception {
received.add(e);
}
}, new Action() {
@Override
public void run() throws Exception {
received.add(100);
}
}, new Consumer<Disposable>() {
@Override
public void accept(Disposable s) throws Exception {
}
});
source.subscribe(o);
assertEquals(Arrays.asList(1, 100), received);
}
@Test
public void badSourceEmitAfterDone() {
Observable<Integer> source = new Observable<Integer>() {
@Override
public void subscribeActual(Observer<? super Integer> s) {
s.onSubscribe(Disposables.empty());
s.onNext(1);
s.onComplete();
s.onNext(2);
s.onError(new TestException());
s.onComplete();
}
};
final List<Object> received = new ArrayList<Object>();
LambdaObserver<Object> o = new LambdaObserver<Object>(new Consumer<Object>() {
@Override
public void accept(Object v) throws Exception {
received.add(v);
}
},
new Consumer<Throwable>() {
@Override
public void accept(Throwable e) throws Exception {
received.add(e);
}
}, new Action() {
@Override
public void run() throws Exception {
received.add(100);
}
}, new Consumer<Disposable>() {
@Override
public void accept(Disposable s) throws Exception {
}
});
source.subscribe(o);
assertEquals(Arrays.asList(1, 100), received);
}
@Test
public void onNextThrowsCancelsUpstream() {
PublishSubject<Integer> ps = PublishSubject.create();
final List<Throwable> errors = new ArrayList<Throwable>();
ps.subscribe(new Consumer<Integer>() {
@Override
public void accept(Integer v) throws Exception {
throw new TestException();
}
}, new Consumer<Throwable>() {
@Override
public void accept(Throwable e) throws Exception {
errors.add(e);
}
});
assertTrue("No observers?!", ps.hasObservers());
assertTrue("Has errors already?!", errors.isEmpty());
ps.onNext(1);
assertFalse("Has observers?!", ps.hasObservers());
assertFalse("No errors?!", errors.isEmpty());
assertTrue(errors.toString(), errors.get(0) instanceof TestException);
}
@Test
public void onSubscribeThrowsCancelsUpstream() {
PublishSubject<Integer> ps = PublishSubject.create();
final List<Throwable> errors = new ArrayList<Throwable>();
ps.subscribe(new Consumer<Integer>() {
@Override
public void accept(Integer v) throws Exception {
}
}, new Consumer<Throwable>() {
@Override
public void accept(Throwable e) throws Exception {
errors.add(e);
}
}, new Action() {
@Override
public void run() throws Exception {
}
}, new Consumer<Disposable>() {
@Override
public void accept(Disposable s) throws Exception {
throw new TestException();
}
});
assertFalse("Has observers?!", ps.hasObservers());
assertFalse("No errors?!", errors.isEmpty());
assertTrue(errors.toString(), errors.get(0) instanceof TestException);
}
}