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.set;
18
19 import static org.junit.jupiter.api.Assertions.assertSame;
20 import static org.junit.jupiter.api.Assertions.assertThrows;
21 import static org.junit.jupiter.api.Assertions.assertTrue;
22
23 import java.util.Arrays;
24 import java.util.HashSet;
25 import java.util.Set;
26
27 import org.apache.commons.collections4.Unmodifiable;
28 import org.junit.jupiter.api.Test;
29
30 /**
31 * Extension of {@link AbstractSetTest} for exercising the
32 * {@link UnmodifiableSet} implementation.
33 */
34 public class UnmodifiableSetTest<E> extends AbstractSetTest<E> {
35
36 @Override
37 public String getCompatibilityVersion() {
38 return "4";
39 }
40
41 @Override
42 protected int getIterationBehaviour() {
43 return UNORDERED;
44 }
45
46 @Override
47 public boolean isAddSupported() {
48 return false;
49 }
50
51 @Override
52 public boolean isRemoveSupported() {
53 return false;
54 }
55
56 @Override
57 public Set<E> makeFullCollection() {
58 final HashSet<E> set = new HashSet<>(Arrays.asList(getFullElements()));
59 return UnmodifiableSet.unmodifiableSet(set);
60 }
61
62 @Override
63 public Set<E> makeObject() {
64 return UnmodifiableSet.unmodifiableSet(new HashSet<>());
65 }
66
67 @Test
68 public void testDecorateFactory() {
69 final Set<E> set = makeFullCollection();
70 assertSame(set, UnmodifiableSet.unmodifiableSet(set));
71
72 assertThrows(NullPointerException.class, () -> UnmodifiableSet.unmodifiableSet(null));
73 }
74
75 @Test
76 public void testUnmodifiable() {
77 assertTrue(makeObject() instanceof Unmodifiable);
78 assertTrue(makeFullCollection() instanceof Unmodifiable);
79 }
80
81 // public void testCreate() throws Exception {
82 // resetEmpty();
83 // writeExternalFormToDisk((java.io.Serializable) getCollection(), "src/test/resources/data/test/UnmodifiableSet.emptyCollection.version4.obj");
84 // resetFull();
85 // writeExternalFormToDisk((java.io.Serializable) getCollection(), "src/test/resources/data/test/UnmodifiableSet.fullCollection.version4.obj");
86 // }
87
88 }