/**
* 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.never;
import static org.mockito.Mockito.times;
import static org.mockito.Mockito.verify;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.LinkedHashMap;
import java.util.Map;
import org.junit.Before;
import org.junit.Test;
import org.mockito.Mock;
import org.mockito.MockitoAnnotations;
import rx.Observable;
import rx.Observer;
import rx.functions.Func0;
import rx.functions.Func1;
import rx.internal.operators.OperatorToMultimap.DefaultMultimapCollectionFactory;
import rx.internal.operators.OperatorToMultimap.DefaultToMultimapFactory;
import rx.internal.util.UtilityFunctions;
public class OperatorToMultimapTest {
@Mock
Observer<Object> objectObserver;
@Before
public void before() {
MockitoAnnotations.initMocks(this);
}
Func1<String, Integer> lengthFunc = new Func1<String, Integer>() {
@Override
public Integer call(String t1) {
return t1.length();
}
};
Func1<String, String> duplicate = new Func1<String, String>() {
@Override
public String call(String t1) {
return t1 + t1;
}
};
@Test
public void testToMultimap() {
Observable<String> source = Observable.just("a", "b", "cc", "dd");
Observable<Map<Integer, Collection<String>>> mapped = source.toMultimap(lengthFunc);
Map<Integer, Collection<String>> expected = new HashMap<Integer, Collection<String>>();
expected.put(1, Arrays.asList("a", "b"));
expected.put(2, Arrays.asList("cc", "dd"));
mapped.subscribe(objectObserver);
verify(objectObserver, never()).onError(any(Throwable.class));
verify(objectObserver, times(1)).onNext(expected);
verify(objectObserver, times(1)).onCompleted();
}
@Test
public void testToMultimapWithValueSelector() {
Observable<String> source = Observable.just("a", "b", "cc", "dd");
Observable<Map<Integer, Collection<String>>> mapped = source.toMultimap(lengthFunc, duplicate);
Map<Integer, Collection<String>> expected = new HashMap<Integer, Collection<String>>();
expected.put(1, Arrays.asList("aa", "bb"));
expected.put(2, Arrays.asList("cccc", "dddd"));
mapped.subscribe(objectObserver);
verify(objectObserver, never()).onError(any(Throwable.class));
verify(objectObserver, times(1)).onNext(expected);
verify(objectObserver, times(1)).onCompleted();
}
@Test
public void testToMultimapWithMapFactory() {
Observable<String> source = Observable.just("a", "b", "cc", "dd", "eee", "fff");
Func0<Map<Integer, Collection<String>>> mapFactory = new Func0<Map<Integer, Collection<String>>>() {
@Override
public Map<Integer, Collection<String>> call() {
return new LinkedHashMap<Integer, Collection<String>>() {
/** */
private static final long serialVersionUID = -2084477070717362859L;
@Override
protected boolean removeEldestEntry(Map.Entry<Integer, Collection<String>> eldest) {
return size() > 2;
}
};
}
};
Observable<Map<Integer, Collection<String>>> mapped = source.toMultimap(
lengthFunc, UtilityFunctions.<String>identity(),
mapFactory, new DefaultMultimapCollectionFactory<Integer, String>());
Map<Integer, Collection<String>> expected = new HashMap<Integer, Collection<String>>();
expected.put(2, Arrays.asList("cc", "dd"));
expected.put(3, Arrays.asList("eee", "fff"));
mapped.subscribe(objectObserver);
verify(objectObserver, never()).onError(any(Throwable.class));
verify(objectObserver, times(1)).onNext(expected);
verify(objectObserver, times(1)).onCompleted();
}
@Test
public void testToMultimapWithCollectionFactory() {
Observable<String> source = Observable.just("cc", "dd", "eee", "eee");
Func1<Integer, Collection<String>> collectionFactory = new Func1<Integer, Collection<String>>() {
@Override
public Collection<String> call(Integer t1) {
if (t1 == 2) {
return new ArrayList<String>();
} else {
return new HashSet<String>();
}
}
};
Observable<Map<Integer, Collection<String>>> mapped = source.toMultimap(
lengthFunc, UtilityFunctions.<String>identity(),
new DefaultToMultimapFactory<Integer, String>(), collectionFactory);
Map<Integer, Collection<String>> expected = new HashMap<Integer, Collection<String>>();
expected.put(2, Arrays.asList("cc", "dd"));
expected.put(3, new HashSet<String>(Arrays.asList("eee")));
mapped.subscribe(objectObserver);
verify(objectObserver, never()).onError(any(Throwable.class));
verify(objectObserver, times(1)).onNext(expected);
verify(objectObserver, times(1)).onCompleted();
}
@Test
public void testToMultimapWithError() {
Observable<String> source = Observable.just("a", "b", "cc", "dd");
Func1<String, Integer> lengthFuncErr = new Func1<String, Integer>() {
@Override
public Integer call(String t1) {
if ("b".equals(t1)) {
throw new RuntimeException("Forced Failure");
}
return t1.length();
}
};
Observable<Map<Integer, Collection<String>>> mapped = source.toMultimap(lengthFuncErr);
Map<Integer, Collection<String>> expected = new HashMap<Integer, Collection<String>>();
expected.put(1, Arrays.asList("a", "b"));
expected.put(2, Arrays.asList("cc", "dd"));
mapped.subscribe(objectObserver);
verify(objectObserver, times(1)).onError(any(Throwable.class));
verify(objectObserver, never()).onNext(expected);
verify(objectObserver, never()).onCompleted();
}
@Test
public void testToMultimapWithErrorInValueSelector() {
Observable<String> source = Observable.just("a", "b", "cc", "dd");
Func1<String, String> duplicateErr = new Func1<String, String>() {
@Override
public String call(String t1) {
if ("b".equals(t1)) {
throw new RuntimeException("Forced failure");
}
return t1 + t1;
}
};
Observable<Map<Integer, Collection<String>>> mapped = source.toMultimap(lengthFunc, duplicateErr);
Map<Integer, Collection<String>> expected = new HashMap<Integer, Collection<String>>();
expected.put(1, Arrays.asList("aa", "bb"));
expected.put(2, Arrays.asList("cccc", "dddd"));
mapped.subscribe(objectObserver);
verify(objectObserver, times(1)).onError(any(Throwable.class));
verify(objectObserver, never()).onNext(expected);
verify(objectObserver, never()).onCompleted();
}
@Test
public void testToMultimapWithMapThrowingFactory() {
Observable<String> source = Observable.just("a", "b", "cc", "dd", "eee", "fff");
Func0<Map<Integer, Collection<String>>> mapFactory = new Func0<Map<Integer, Collection<String>>>() {
@Override
public Map<Integer, Collection<String>> call() {
throw new RuntimeException("Forced failure");
}
};
Observable<Map<Integer, Collection<String>>> mapped = source.toMultimap(lengthFunc, UtilityFunctions.<String>identity(), mapFactory);
Map<Integer, Collection<String>> expected = new HashMap<Integer, Collection<String>>();
expected.put(2, Arrays.asList("cc", "dd"));
expected.put(3, Arrays.asList("eee", "fff"));
mapped.subscribe(objectObserver);
verify(objectObserver, times(1)).onError(any(Throwable.class));
verify(objectObserver, never()).onNext(expected);
verify(objectObserver, never()).onCompleted();
}
@Test
public void testToMultimapWithThrowingCollectionFactory() {
Observable<String> source = Observable.just("cc", "cc", "eee", "eee");
Func1<Integer, Collection<String>> collectionFactory = new Func1<Integer, Collection<String>>() {
@Override
public Collection<String> call(Integer t1) {
if (t1 == 2) {
throw new RuntimeException("Forced failure");
} else {
return new HashSet<String>();
}
}
};
Observable<Map<Integer, Collection<String>>> mapped = source.toMultimap(lengthFunc, UtilityFunctions.<String>identity(), new DefaultToMultimapFactory<Integer, String>(), collectionFactory);
Map<Integer, Collection<String>> expected = new HashMap<Integer, Collection<String>>();
expected.put(2, Arrays.asList("cc", "dd"));
expected.put(3, Collections.singleton("eee"));
mapped.subscribe(objectObserver);
verify(objectObserver, times(1)).onError(any(Throwable.class));
verify(objectObserver, never()).onNext(expected);
verify(objectObserver, never()).onCompleted();
}
}