82 lines
2.9 KiB
Java
82 lines
2.9 KiB
Java
/*
|
|
* ******************************************************************************
|
|
* *
|
|
* *
|
|
* * This program and the accompanying materials are made available under the
|
|
* * terms of the Apache License, Version 2.0 which is available at
|
|
* * https://www.apache.org/licenses/LICENSE-2.0.
|
|
* *
|
|
* * See the NOTICE file distributed with this work for additional
|
|
* * information regarding copyright ownership.
|
|
* * 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.
|
|
* *
|
|
* * SPDX-License-Identifier: Apache-2.0
|
|
* *****************************************************************************
|
|
*/
|
|
|
|
package org.nd4j.common.function;
|
|
|
|
import org.junit.jupiter.api.Test;
|
|
import org.nd4j.common.primitives.Pair;
|
|
|
|
import java.util.*;
|
|
|
|
import static org.junit.jupiter.api.Assertions.assertEquals;
|
|
|
|
public class FunctionalUtilsTest {
|
|
|
|
|
|
@Test
|
|
public void testCoGroup() {
|
|
List<Pair<String,String>> leftMap = new ArrayList<>();
|
|
List<Pair<String,String>> rightMap = new ArrayList<>();
|
|
|
|
leftMap.add(Pair.of("cat","adam"));
|
|
leftMap.add(Pair.of("dog","adam"));
|
|
|
|
rightMap.add(Pair.of("fish","alex"));
|
|
rightMap.add(Pair.of("cat","alice"));
|
|
rightMap.add(Pair.of("dog","steve"));
|
|
|
|
//[(fish,([],[alex])), (dog,([adam],[steve])), (cat,([adam],[alice]))]
|
|
Map<String,Pair<List<String>,List<String>>> assertion = new HashMap<>();
|
|
assertion.put("cat",Pair.of(Collections.singletonList("adam"), Collections.singletonList("alice")));
|
|
assertion.put("dog",Pair.of(Collections.singletonList("adam"), Collections.singletonList("steve")));
|
|
assertion.put("fish",Pair.of(Collections.emptyList(), Collections.singletonList("alex")));
|
|
|
|
Map<String, Pair<List<String>, List<String>>> cogroup = FunctionalUtils.cogroup(leftMap, rightMap);
|
|
assertEquals(assertion,cogroup);
|
|
|
|
}
|
|
|
|
@Test
|
|
public void testGroupBy() {
|
|
List<Pair<Integer,Integer>> list = new ArrayList<>();
|
|
for(int i = 0; i < 10; i++) {
|
|
for(int j = 0; j < 5; j++) {
|
|
list.add(Pair.of(i, j));
|
|
}
|
|
}
|
|
|
|
Map<Integer, List<Integer>> integerIterableMap = FunctionalUtils.groupByKey(list);
|
|
assertEquals(10,integerIterableMap.keySet().size());
|
|
assertEquals(5,integerIterableMap.get(0).size());
|
|
}
|
|
|
|
@Test
|
|
public void testMapToPair() {
|
|
Map<String,String> map = new HashMap<>();
|
|
for(int i = 0; i < 5; i++) {
|
|
map.put(String.valueOf(i),String.valueOf(i));
|
|
}
|
|
|
|
List<Pair<String, String>> pairs = FunctionalUtils.mapToPair(map);
|
|
assertEquals(map.size(),pairs.size());
|
|
}
|
|
|
|
}
|