/**
* 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.assertEquals;
import static org.junit.Assert.fail;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.TimeUnit;
import org.junit.Before;
import org.junit.Test;
import rx.Observable;
import rx.Observer;
import rx.Scheduler;
import rx.Subscriber;
import rx.functions.Action0;
import rx.functions.Action1;
import rx.functions.Func0;
import rx.functions.Func1;
import rx.schedulers.TestScheduler;
public class OperatorWindowWithStartEndObservableTest {
private TestScheduler scheduler;
private Scheduler.Worker innerScheduler;
@Before
public void before() {
scheduler = new TestScheduler();
innerScheduler = scheduler.createWorker();
}
@Test
public void testObservableBasedOpenerAndCloser() {
final List<String> list = new ArrayList<String>();
final List<List<String>> lists = new ArrayList<List<String>>();
Observable<String> source = Observable.create(new Observable.OnSubscribe<String>() {
@Override
public void call(Subscriber<? super String> observer) {
push(observer, "one", 10);
push(observer, "two", 60);
push(observer, "three", 110);
push(observer, "four", 160);
push(observer, "five", 210);
complete(observer, 500);
}
});
Observable<Object> openings = Observable.create(new Observable.OnSubscribe<Object>() {
@Override
public void call(Subscriber<? super Object> observer) {
push(observer, new Object(), 50);
push(observer, new Object(), 200);
complete(observer, 250);
}
});
Func1<Object, Observable<Object>> closer = new Func1<Object, Observable<Object>>() {
@Override
public Observable<Object> call(Object opening) {
return Observable.create(new Observable.OnSubscribe<Object>() {
@Override
public void call(Subscriber<? super Object> observer) {
push(observer, new Object(), 100);
complete(observer, 101);
}
});
}
};
Observable<Observable<String>> windowed = source.window(openings, closer);
windowed.subscribe(observeWindow(list, lists));
scheduler.advanceTimeTo(500, TimeUnit.MILLISECONDS);
assertEquals(2, lists.size());
assertEquals(lists.get(0), list("two", "three"));
assertEquals(lists.get(1), list("five"));
}
@Test
public void testObservableBasedCloser() {
final List<String> list = new ArrayList<String>();
final List<List<String>> lists = new ArrayList<List<String>>();
Observable<String> source = Observable.create(new Observable.OnSubscribe<String>() {
@Override
public void call(Subscriber<? super String> observer) {
push(observer, "one", 10);
push(observer, "two", 60);
push(observer, "three", 110);
push(observer, "four", 160);
push(observer, "five", 210);
complete(observer, 250);
}
});
Func0<Observable<Object>> closer = new Func0<Observable<Object>>() {
@Override
public Observable<Object> call() {
return Observable.create(new Observable.OnSubscribe<Object>() {
@Override
public void call(Subscriber<? super Object> observer) {
push(observer, new Object(), 100);
push(observer, new Object(), 200);
complete(observer, 301);
}
});
}
};
Observable<Observable<String>> windowed = source.window(closer);
windowed.subscribe(observeWindow(list, lists));
scheduler.advanceTimeTo(500, TimeUnit.MILLISECONDS);
assertEquals(3, lists.size());
assertEquals(lists.get(0), list("one", "two"));
assertEquals(lists.get(1), list("three", "four"));
assertEquals(lists.get(2), list("five"));
}
private List<String> list(String... args) {
List<String> list = new ArrayList<String>();
for (String arg : args) {
list.add(arg);
}
return list;
}
private <T> void push(final Observer<T> observer, final T value, int delay) {
innerScheduler.schedule(new Action0() {
@Override
public void call() {
observer.onNext(value);
}
}, delay, TimeUnit.MILLISECONDS);
}
private void complete(final Observer<?> observer, int delay) {
innerScheduler.schedule(new Action0() {
@Override
public void call() {
observer.onCompleted();
}
}, delay, TimeUnit.MILLISECONDS);
}
private Action1<Observable<String>> observeWindow(final List<String> list, final List<List<String>> lists) {
return new Action1<Observable<String>>() {
@Override
public void call(Observable<String> stringObservable) {
stringObservable.subscribe(new Observer<String>() {
@Override
public void onCompleted() {
lists.add(new ArrayList<String>(list));
list.clear();
}
@Override
public void onError(Throwable e) {
fail(e.getMessage());
}
@Override
public void onNext(String args) {
list.add(args);
}
});
}
};
}
}