1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17 package org.apache.commons.collections4.list;
18
19 import static org.junit.jupiter.api.Assertions.assertEquals;
20
21 import java.util.ArrayList;
22 import java.util.HashSet;
23 import java.util.List;
24 import java.util.Set;
25
26 import org.junit.jupiter.api.Test;
27
28 /**
29 * Tests for COLLECTIONS-701.
30 */
31 public class Collections701Test {
32
33 @Test
34 public void testArrayList() {
35 final List<Object> list = new ArrayList<>();
36 list.add(list);
37 assertEquals(1, list.size());
38 assertEquals(list, list.get(0));
39 }
40
41 @Test
42 public void testHashSet() {
43 final Set<Object> set = new HashSet<>();
44 set.add(set);
45 assertEquals(1, set.size());
46 assertEquals(set, set.iterator().next());
47 }
48
49 @Test
50 public void testSetUniqueList() {
51 final List<Object> source = new ArrayList<>();
52 final List<Object> list = SetUniqueList.setUniqueList(source);
53 list.add(list);
54 assertEquals(1, list.size());
55 assertEquals(list, list.get(0));
56 }
57
58 }