1 /*
2 * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 /**
25 * @test
26 * @run testng Wrappers
27 * @summary Unit tests for wrapping classes should delegate to default methods
28 */
29
30 import java.lang.reflect.Method;
31 import java.util.ArrayList;
32 import java.util.Collection;
33 import java.util.Collections;
34 import java.util.LinkedList;
35 import java.util.List;
36 import java.util.Objects;
37 import java.util.TreeMap;
38 import java.util.TreeSet;
39
40 import org.testng.annotations.Test;
41 import org.testng.annotations.DataProvider;
42
43 import static org.testng.Assert.assertFalse;
44
45 @Test(groups = "unit")
46 public class Wrappers {
47 static Object[][] collections;
48
49 @DataProvider(name="collections")
50 public static Object[][] collectionCases() {
51 if (collections != null) {
52 return collections;
53 }
54
55 List<Object[]> cases = new ArrayList<>();
56 LinkedList<Integer> seedList = new LinkedList<>();
57 TreeSet<Integer> seedSet = new TreeSet<>();
58 TreeMap<Integer, Integer> seedMap = new TreeMap<>();
59
60 for (int i = 1; i <= 10; i++) {
61 seedList.add(i);
62 seedSet.add(i);
63 seedMap.put(i, i);
64 }
65
66 cases.add(new Object[] { Collections.unmodifiableCollection(seedList) });
67 cases.add(new Object[] { Collections.unmodifiableList(seedList) });
68 cases.add(new Object[] { Collections.unmodifiableSet(seedSet) });
69 cases.add(new Object[] { Collections.unmodifiableSortedSet(seedSet) });
70
71 // As sets from map also need to be unmodifiable, thus a wrapping
72 // layer exist and should not have default methods
73 cases.add(new Object[] { Collections.unmodifiableMap(seedMap).entrySet() });
74 cases.add(new Object[] { Collections.unmodifiableMap(seedMap).keySet() });
75 cases.add(new Object[] { Collections.unmodifiableMap(seedMap).values() });
76 cases.add(new Object[] { Collections.unmodifiableSortedMap(seedMap).entrySet() });
77 cases.add(new Object[] { Collections.unmodifiableSortedMap(seedMap).keySet() });
78 cases.add(new Object[] { Collections.unmodifiableSortedMap(seedMap).values() });
79
80 // Synchronized
81 cases.add(new Object[] { Collections.synchronizedCollection(seedList) });
82 cases.add(new Object[] { Collections.synchronizedList(seedList) });
83 cases.add(new Object[] { Collections.synchronizedSet(seedSet) });
84 cases.add(new Object[] { Collections.synchronizedSortedSet(seedSet) });
85
86 // As sets from map also need to be synchronized on the map, thus a
87 // wrapping layer exist and should not have default methods
88 cases.add(new Object[] { Collections.synchronizedMap(seedMap).entrySet() });
89 cases.add(new Object[] { Collections.synchronizedMap(seedMap).keySet() });
90 cases.add(new Object[] { Collections.synchronizedMap(seedMap).values() });
91 cases.add(new Object[] { Collections.synchronizedSortedMap(seedMap).entrySet() });
92 cases.add(new Object[] { Collections.synchronizedSortedMap(seedMap).keySet() });
93 cases.add(new Object[] { Collections.synchronizedSortedMap(seedMap).values() });
94
95 // Checked
96 cases.add(new Object[] { Collections.checkedCollection(seedList, Integer.class) });
97 cases.add(new Object[] { Collections.checkedList(seedList, Integer.class) });
98 cases.add(new Object[] { Collections.checkedSet(seedSet, Integer.class) });
99 cases.add(new Object[] { Collections.checkedSortedSet(seedSet, Integer.class) });
100 cases.add(new Object[] { Collections.checkedQueue(seedList, Integer.class) });
101
102 // asLifoQueue is another wrapper
103 cases.add(new Object[] { Collections.asLifoQueue(seedList) });
104
105 collections = cases.toArray(new Object[0][]);
106 return collections;
107 }
108
109 static Method[] defaultMethods;
110
111 static {
112 ArrayList<Method> list = new ArrayList<>();
113 Method[] methods = Collection.class.getMethods();
114 for (Method m: methods) {
115 if (m.isDefault()) {
116 list.add(m);
117 }
118 }
119 defaultMethods = list.toArray(new Method[0]);
120 }
121
122 @Test(dataProvider = "collections")
123 public static void testAllDefaultMethodsOverridden(Collection c) throws NoSuchMethodException {
124 Class cls = c.getClass();
125 for (Method m: defaultMethods) {
126 Method m2 = cls.getMethod(m.getName(), m.getParameterTypes());
127 // default had been override
128 assertFalse(m2.isDefault(), cls.getCanonicalName());
129 }
130 }
131 }
132