/**
* 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;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import java.util.List;
import org.junit.Test;
import rx.CovarianceTest.HorrorMovie;
import rx.CovarianceTest.Media;
import rx.CovarianceTest.Movie;
import rx.Observable.OnSubscribe;
public class MergeTests {
/**
* This won't compile if super/extends isn't done correctly on generics
*/
@Test
public void testCovarianceOfMerge() {
Observable horrors = Observable.just(new HorrorMovie());
Observable> metaHorrors = Observable.just(horrors);
Observable. merge(metaHorrors);
}
@Test
public void testMergeCovariance() {
Observable o1 = Observable. just(new HorrorMovie(), new Movie());
Observable o2 = Observable.just(new Media(), new HorrorMovie());
Observable> os = Observable.just(o1, o2);
List values = Observable.merge(os).toList().toBlocking().single();
assertEquals(4, values.size());
}
@Test
public void testMergeCovariance2() {
Observable o1 = Observable.just(new HorrorMovie(), new Movie(), new Media());
Observable o2 = Observable.just(new Media(), new HorrorMovie());
Observable> os = Observable.just(o1, o2);
List values = Observable.merge(os).toList().toBlocking().single();
assertEquals(5, values.size());
}
@Test
public void testMergeCovariance3() {
Observable o1 = Observable.just(new HorrorMovie(), new Movie());
Observable o2 = Observable.just(new Media(), new HorrorMovie());
List values = Observable.merge(o1, o2).toList().toBlocking().single();
assertTrue(values.get(0) instanceof HorrorMovie);
assertTrue(values.get(1) instanceof Movie);
assertTrue(values.get(2) instanceof Media);
assertTrue(values.get(3) instanceof HorrorMovie);
}
@Test
public void testMergeCovariance4() {
Observable o1 = Observable.create(new OnSubscribe() {
@Override
public void call(Subscriber o) {
o.onNext(new HorrorMovie());
o.onNext(new Movie());
// o.onNext(new Media()); // correctly doesn't compile
o.onCompleted();
}
});
Observable o2 = Observable.just(new Media(), new HorrorMovie());
List values = Observable.merge(o1, o2).toList().toBlocking().single();
assertTrue(values.get(0) instanceof HorrorMovie);
assertTrue(values.get(1) instanceof Movie);
assertTrue(values.get(2) instanceof Media);
assertTrue(values.get(3) instanceof HorrorMovie);
}
}