/**
* 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.mockito.Matchers.any;
import static org.mockito.Mockito.inOrder;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.never;
import static org.mockito.Mockito.verify;
import java.util.Arrays;
import java.util.Iterator;
import java.util.concurrent.atomic.AtomicInteger;
import static org.junit.Assert.assertEquals;
import org.junit.Before;
import org.junit.Test;
import org.mockito.InOrder;
import rx.Observable;
import rx.Observer;
import rx.exceptions.TestException;
import rx.functions.Action1;
import rx.functions.Func1;
import rx.functions.Func2;
import rx.functions.Func3;
import rx.subjects.PublishSubject;
public class OperatorZipIterableTest {
Func2<String, String, String> concat2Strings;
PublishSubject<String> s1;
PublishSubject<String> s2;
Observable<String> zipped;
Observer<String> observer;
InOrder inOrder;
@Before
@SuppressWarnings("unchecked")
public void setUp() {
concat2Strings = new Func2<String, String, String>() {
@Override
public String call(String t1, String t2) {
return t1 + "-" + t2;
}
};
s1 = PublishSubject.create();
s2 = PublishSubject.create();
zipped = Observable.zip(s1, s2, concat2Strings);
observer = mock(Observer.class);
inOrder = inOrder(observer);
zipped.subscribe(observer);
}
Func2<Object, Object, String> zipr2 = new Func2<Object, Object, String>() {
@Override
public String call(Object t1, Object t2) {
return "" + t1 + t2;
}
};
Func3<Object, Object, Object, String> zipr3 = new Func3<Object, Object, Object, String>() {
@Override
public String call(Object t1, Object t2, Object t3) {
return "" + t1 + t2 + t3;
}
};
@Test
public void testZipIterableSameSize() {
PublishSubject<String> r1 = PublishSubject.create();
/* define a Observer to receive aggregated events */
@SuppressWarnings("unchecked")
Observer<String> o = mock(Observer.class);
InOrder io = inOrder(o);
Iterable<String> r2 = Arrays.asList("1", "2", "3");
r1.zipWith(r2, zipr2).subscribe(o);
r1.onNext("one-");
r1.onNext("two-");
r1.onNext("three-");
r1.onCompleted();
io.verify(o).onNext("one-1");
io.verify(o).onNext("two-2");
io.verify(o).onNext("three-3");
io.verify(o).onCompleted();
verify(o, never()).onError(any(Throwable.class));
}
@Test
public void testZipIterableEmptyFirstSize() {
PublishSubject<String> r1 = PublishSubject.create();
/* define a Observer to receive aggregated events */
@SuppressWarnings("unchecked")
Observer<String> o = mock(Observer.class);
InOrder io = inOrder(o);
Iterable<String> r2 = Arrays.asList("1", "2", "3");
r1.zipWith(r2, zipr2).subscribe(o);
r1.onCompleted();
io.verify(o).onCompleted();
verify(o, never()).onNext(any(String.class));
verify(o, never()).onError(any(Throwable.class));
}
@Test
public void testZipIterableEmptySecond() {
PublishSubject<String> r1 = PublishSubject.create();
/* define a Observer to receive aggregated events */
@SuppressWarnings("unchecked")
Observer<String> o = mock(Observer.class);
InOrder io = inOrder(o);
Iterable<String> r2 = Arrays.asList();
r1.zipWith(r2, zipr2).subscribe(o);
r1.onNext("one-");
r1.onNext("two-");
r1.onNext("three-");
r1.onCompleted();
io.verify(o).onCompleted();
verify(o, never()).onNext(any(String.class));
verify(o, never()).onError(any(Throwable.class));
}
@Test
public void testZipIterableFirstShorter() {
PublishSubject<String> r1 = PublishSubject.create();
/* define a Observer to receive aggregated events */
@SuppressWarnings("unchecked")
Observer<String> o = mock(Observer.class);
InOrder io = inOrder(o);
Iterable<String> r2 = Arrays.asList("1", "2", "3");
r1.zipWith(r2, zipr2).subscribe(o);
r1.onNext("one-");
r1.onNext("two-");
r1.onCompleted();
io.verify(o).onNext("one-1");
io.verify(o).onNext("two-2");
io.verify(o).onCompleted();
verify(o, never()).onError(any(Throwable.class));
}
@Test
public void testZipIterableSecondShorter() {
PublishSubject<String> r1 = PublishSubject.create();
/* define a Observer to receive aggregated events */
@SuppressWarnings("unchecked")
Observer<String> o = mock(Observer.class);
InOrder io = inOrder(o);
Iterable<String> r2 = Arrays.asList("1", "2");
r1.zipWith(r2, zipr2).subscribe(o);
r1.onNext("one-");
r1.onNext("two-");
r1.onNext("three-");
r1.onCompleted();
io.verify(o).onNext("one-1");
io.verify(o).onNext("two-2");
io.verify(o).onCompleted();
verify(o, never()).onError(any(Throwable.class));
}
@Test
public void testZipIterableFirstThrows() {
PublishSubject<String> r1 = PublishSubject.create();
/* define a Observer to receive aggregated events */
@SuppressWarnings("unchecked")
Observer<String> o = mock(Observer.class);
InOrder io = inOrder(o);
Iterable<String> r2 = Arrays.asList("1", "2", "3");
r1.zipWith(r2, zipr2).subscribe(o);
r1.onNext("one-");
r1.onNext("two-");
r1.onError(new TestException());
io.verify(o).onNext("one-1");
io.verify(o).onNext("two-2");
io.verify(o).onError(any(TestException.class));
verify(o, never()).onCompleted();
}
@Test
public void testZipIterableIteratorThrows() {
PublishSubject<String> r1 = PublishSubject.create();
/* define a Observer to receive aggregated events */
@SuppressWarnings("unchecked")
Observer<String> o = mock(Observer.class);
InOrder io = inOrder(o);
Iterable<String> r2 = new Iterable<String>() {
@Override
public Iterator<String> iterator() {
throw new TestException();
}
};
r1.zipWith(r2, zipr2).subscribe(o);
r1.onNext("one-");
r1.onNext("two-");
r1.onError(new TestException());
io.verify(o).onError(any(TestException.class));
verify(o, never()).onCompleted();
verify(o, never()).onNext(any(String.class));
}
@Test
public void testZipIterableHasNextThrows() {
PublishSubject<String> r1 = PublishSubject.create();
/* define a Observer to receive aggregated events */
@SuppressWarnings("unchecked")
Observer<String> o = mock(Observer.class);
InOrder io = inOrder(o);
Iterable<String> r2 = new Iterable<String>() {
@Override
public Iterator<String> iterator() {
return new Iterator<String>() {
int count;
@Override
public boolean hasNext() {
if (count == 0) {
return true;
}
throw new TestException();
}
@Override
public String next() {
count++;
return "1";
}
@Override
public void remove() {
throw new UnsupportedOperationException("Not supported yet.");
}
};
}
};
r1.zipWith(r2, zipr2).subscribe(o);
r1.onNext("one-");
r1.onError(new TestException());
io.verify(o).onNext("one-1");
io.verify(o).onError(any(TestException.class));
verify(o, never()).onCompleted();
}
@Test
public void testZipIterableNextThrows() {
PublishSubject<String> r1 = PublishSubject.create();
/* define a Observer to receive aggregated events */
@SuppressWarnings("unchecked")
Observer<String> o = mock(Observer.class);
InOrder io = inOrder(o);
Iterable<String> r2 = new Iterable<String>() {
@Override
public Iterator<String> iterator() {
return new Iterator<String>() {
@Override
public boolean hasNext() {
return true;
}
@Override
public String next() {
throw new TestException();
}
@Override
public void remove() {
throw new UnsupportedOperationException("Not supported yet.");
}
};
}
};
r1.zipWith(r2, zipr2).subscribe(o);
r1.onError(new TestException());
io.verify(o).onError(any(TestException.class));
verify(o, never()).onNext(any(String.class));
verify(o, never()).onCompleted();
}
Action1<String> printer = new Action1<String>() {
@Override
public void call(String t1) {
System.out.println(t1);
}
};
static final class SquareStr implements Func1<Integer, String> {
final AtomicInteger counter = new AtomicInteger();
@Override
public String call(Integer t1) {
counter.incrementAndGet();
System.out.println("Omg I'm calculating so hard: " + t1 + "*" + t1 + "=" + (t1*t1));
return " " + (t1*t1);
}
}
@Test public void testTake2() {
Observable<Integer> o = Observable.just(1, 2, 3, 4, 5);
Iterable<String> it = Arrays.asList("a", "b", "c", "d", "e");
SquareStr squareStr = new SquareStr();
o.map(squareStr).zipWith(it, concat2Strings).take(2).subscribe(printer);
assertEquals(2, squareStr.counter.get());
}
}