/**
* 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.operators.flowable;
import static org.mockito.Mockito.*;
import java.util.*;
import java.util.concurrent.Callable;
import org.junit.*;
import org.reactivestreams.Subscriber;
import io.reactivex.*;
import io.reactivex.functions.Function;
public class FlowableToMultimapTest {
Subscriber<Object> objectObserver;
SingleObserver<Object> singleObserver;
@Before
public void before() {
objectObserver = TestHelper.mockSubscriber();
singleObserver = TestHelper.mockSingleObserver();
}
Function<String, Integer> lengthFunc = new Function<String, Integer>() {
@Override
public Integer apply(String t1) {
return t1.length();
}
};
Function<String, String> duplicate = new Function<String, String>() {
@Override
public String apply(String t1) {
return t1 + t1;
}
};
@Test
public void testToMultimapFlowable() {
Flowable<String> source = Flowable.just("a", "b", "cc", "dd");
Flowable<Map<Integer, Collection<String>>> mapped = source.toMultimap(lengthFunc).toFlowable();
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)).onComplete();
}
@Test
public void testToMultimapWithValueSelectorFlowable() {
Flowable<String> source = Flowable.just("a", "b", "cc", "dd");
Flowable<Map<Integer, Collection<String>>> mapped = source.toMultimap(lengthFunc, duplicate).toFlowable();
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)).onComplete();
}
@Test
public void testToMultimapWithMapFactoryFlowable() {
Flowable<String> source = Flowable.just("a", "b", "cc", "dd", "eee", "fff");
Callable<Map<Integer, Collection<String>>> mapFactory = new Callable<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;
}
};
}
};
Function<String, String> identity = new Function<String, String>() {
@Override
public String apply(String v) {
return v;
}
};
Flowable<Map<Integer, Collection<String>>> mapped = source.toMultimap(
lengthFunc, identity,
mapFactory, new Function<Integer, Collection<String>>() {
@Override
public Collection<String> apply(Integer e) {
return new ArrayList<String>();
}
}).toFlowable();
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)).onComplete();
}
@Test
public void testToMultimapWithCollectionFactoryFlowable() {
Flowable<String> source = Flowable.just("cc", "dd", "eee", "eee");
Function<Integer, Collection<String>> collectionFactory = new Function<Integer, Collection<String>>() {
@Override
public Collection<String> apply(Integer t1) {
if (t1 == 2) {
return new ArrayList<String>();
} else {
return new HashSet<String>();
}
}
};
Function<String, String> identity = new Function<String, String>() {
@Override
public String apply(String v) {
return v;
}
};
Callable<Map<Integer, Collection<String>>> mapSupplier = new Callable<Map<Integer, Collection<String>>>() {
@Override
public Map<Integer, Collection<String>> call() {
return new HashMap<Integer, Collection<String>>();
}
};
Flowable<Map<Integer, Collection<String>>> mapped = source
.toMultimap(lengthFunc, identity, mapSupplier, collectionFactory).toFlowable();
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)).onComplete();
}
@Test
public void testToMultimapWithErrorFlowable() {
Flowable<String> source = Flowable.just("a", "b", "cc", "dd");
Function<String, Integer> lengthFuncErr = new Function<String, Integer>() {
@Override
public Integer apply(String t1) {
if ("b".equals(t1)) {
throw new RuntimeException("Forced Failure");
}
return t1.length();
}
};
Flowable<Map<Integer, Collection<String>>> mapped = source.toMultimap(lengthFuncErr).toFlowable();
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()).onComplete();
}
@Test
public void testToMultimapWithErrorInValueSelectorFlowable() {
Flowable<String> source = Flowable.just("a", "b", "cc", "dd");
Function<String, String> duplicateErr = new Function<String, String>() {
@Override
public String apply(String t1) {
if ("b".equals(t1)) {
throw new RuntimeException("Forced failure");
}
return t1 + t1;
}
};
Flowable<Map<Integer, Collection<String>>> mapped = source.toMultimap(lengthFunc, duplicateErr).toFlowable();
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()).onComplete();
}
@Test
public void testToMultimapWithMapThrowingFactoryFlowable() {
Flowable<String> source = Flowable.just("a", "b", "cc", "dd", "eee", "fff");
Callable<Map<Integer, Collection<String>>> mapFactory = new Callable<Map<Integer, Collection<String>>>() {
@Override
public Map<Integer, Collection<String>> call() {
throw new RuntimeException("Forced failure");
}
};
Flowable<Map<Integer, Collection<String>>> mapped = source
.toMultimap(lengthFunc, new Function<String, String>() {
@Override
public String apply(String v) {
return v;
}
}, mapFactory).toFlowable();
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()).onComplete();
}
@Test
public void testToMultimapWithThrowingCollectionFactoryFlowable() {
Flowable<String> source = Flowable.just("cc", "cc", "eee", "eee");
Function<Integer, Collection<String>> collectionFactory = new Function<Integer, Collection<String>>() {
@Override
public Collection<String> apply(Integer t1) {
if (t1 == 2) {
throw new RuntimeException("Forced failure");
} else {
return new HashSet<String>();
}
}
};
Function<String, String> identity = new Function<String, String>() {
@Override
public String apply(String v) {
return v;
}
};
Callable<Map<Integer, Collection<String>>> mapSupplier = new Callable<Map<Integer, Collection<String>>>() {
@Override
public Map<Integer, Collection<String>> call() {
return new HashMap<Integer, Collection<String>>();
}
};
Flowable<Map<Integer, Collection<String>>> mapped = source.toMultimap(lengthFunc,
identity, mapSupplier, collectionFactory).toFlowable();
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()).onComplete();
}
@Test
public void testToMultimap() {
Flowable<String> source = Flowable.just("a", "b", "cc", "dd");
Single<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(singleObserver);
verify(singleObserver, never()).onError(any(Throwable.class));
verify(singleObserver, times(1)).onSuccess(expected);
}
@Test
public void testToMultimapWithValueSelector() {
Flowable<String> source = Flowable.just("a", "b", "cc", "dd");
Single<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(singleObserver);
verify(singleObserver, never()).onError(any(Throwable.class));
verify(singleObserver, times(1)).onSuccess(expected);
}
@Test
public void testToMultimapWithMapFactory() {
Flowable<String> source = Flowable.just("a", "b", "cc", "dd", "eee", "fff");
Callable<Map<Integer, Collection<String>>> mapFactory = new Callable<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;
}
};
}
};
Function<String, String> identity = new Function<String, String>() {
@Override
public String apply(String v) {
return v;
}
};
Single<Map<Integer, Collection<String>>> mapped = source.toMultimap(
lengthFunc, identity,
mapFactory, new Function<Integer, Collection<String>>() {
@Override
public Collection<String> apply(Integer e) {
return new ArrayList<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(singleObserver);
verify(singleObserver, never()).onError(any(Throwable.class));
verify(singleObserver, times(1)).onSuccess(expected);
}
@Test
public void testToMultimapWithCollectionFactory() {
Flowable<String> source = Flowable.just("cc", "dd", "eee", "eee");
Function<Integer, Collection<String>> collectionFactory = new Function<Integer, Collection<String>>() {
@Override
public Collection<String> apply(Integer t1) {
if (t1 == 2) {
return new ArrayList<String>();
} else {
return new HashSet<String>();
}
}
};
Function<String, String> identity = new Function<String, String>() {
@Override
public String apply(String v) {
return v;
}
};
Callable<Map<Integer, Collection<String>>> mapSupplier = new Callable<Map<Integer, Collection<String>>>() {
@Override
public Map<Integer, Collection<String>> call() {
return new HashMap<Integer, Collection<String>>();
}
};
Single<Map<Integer, Collection<String>>> mapped = source
.toMultimap(lengthFunc, identity, mapSupplier, 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(singleObserver);
verify(singleObserver, never()).onError(any(Throwable.class));
verify(singleObserver, times(1)).onSuccess(expected);
}
@Test
public void testToMultimapWithError() {
Flowable<String> source = Flowable.just("a", "b", "cc", "dd");
Function<String, Integer> lengthFuncErr = new Function<String, Integer>() {
@Override
public Integer apply(String t1) {
if ("b".equals(t1)) {
throw new RuntimeException("Forced Failure");
}
return t1.length();
}
};
Single<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(singleObserver);
verify(singleObserver, times(1)).onError(any(Throwable.class));
verify(singleObserver, never()).onSuccess(expected);
}
@Test
public void testToMultimapWithErrorInValueSelector() {
Flowable<String> source = Flowable.just("a", "b", "cc", "dd");
Function<String, String> duplicateErr = new Function<String, String>() {
@Override
public String apply(String t1) {
if ("b".equals(t1)) {
throw new RuntimeException("Forced failure");
}
return t1 + t1;
}
};
Single<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(singleObserver);
verify(singleObserver, times(1)).onError(any(Throwable.class));
verify(singleObserver, never()).onSuccess(expected);
}
@Test
public void testToMultimapWithMapThrowingFactory() {
Flowable<String> source = Flowable.just("a", "b", "cc", "dd", "eee", "fff");
Callable<Map<Integer, Collection<String>>> mapFactory = new Callable<Map<Integer, Collection<String>>>() {
@Override
public Map<Integer, Collection<String>> call() {
throw new RuntimeException("Forced failure");
}
};
Single<Map<Integer, Collection<String>>> mapped = source
.toMultimap(lengthFunc, new Function<String, String>() {
@Override
public String apply(String v) {
return v;
}
}, 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(singleObserver);
verify(singleObserver, times(1)).onError(any(Throwable.class));
verify(singleObserver, never()).onSuccess(expected);
}
@Test
public void testToMultimapWithThrowingCollectionFactory() {
Flowable<String> source = Flowable.just("cc", "cc", "eee", "eee");
Function<Integer, Collection<String>> collectionFactory = new Function<Integer, Collection<String>>() {
@Override
public Collection<String> apply(Integer t1) {
if (t1 == 2) {
throw new RuntimeException("Forced failure");
} else {
return new HashSet<String>();
}
}
};
Function<String, String> identity = new Function<String, String>() {
@Override
public String apply(String v) {
return v;
}
};
Callable<Map<Integer, Collection<String>>> mapSupplier = new Callable<Map<Integer, Collection<String>>>() {
@Override
public Map<Integer, Collection<String>> call() {
return new HashMap<Integer, Collection<String>>();
}
};
Single<Map<Integer, Collection<String>>> mapped = source.toMultimap(lengthFunc,
identity, mapSupplier, 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(singleObserver);
verify(singleObserver, times(1)).onError(any(Throwable.class));
verify(singleObserver, never()).onSuccess(expected);
}
}