1 /*
2 * Copyright (c) 2011, 2026, 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 * @bug 5020931 8048207
27 * @summary Unit test for Collections.checkedQueue
28 * @library /test/lib
29 * @run testng CheckedQueue
30 */
31
32 import jdk.test.lib.valueclass.VClass;
33 import java.util.ArrayDeque;
34 import java.util.Collections;
35 import java.util.Queue;
36 import java.util.concurrent.ArrayBlockingQueue;
37
38 import org.testng.annotations.Test;
39 import static org.testng.Assert.fail;
40 import static org.testng.Assert.assertEquals;
41 import static org.testng.Assert.assertTrue;
42 import static org.testng.Assert.assertFalse;
43
44
45 public class CheckedQueue {
46
47 /**
48 * This test adds items to a queue.
49 */
50 @Test
51 public void testAdd() {
52 int arrayLength = 10;
53 Queue<String> abq = Collections.checkedQueue(new ArrayBlockingQueue<>(arrayLength), String.class);
54
55 for (int i = 0; i < arrayLength; i++) {
56 abq.add(Integer.toString(i));
57 }
58
59 try {
60 abq.add("full");
61 } catch (IllegalStateException full) {
62
63 }
64 }
65
66 /**
67 * This test tests the CheckedQueue.add method. It creates a queue of
68 * {@code String}s gets the checked queue, and attempt to add an Integer to
69 * the checked queue.
70 */
71 @Test(expectedExceptions = ClassCastException.class)
72 public void testAddFail1() {
73 int arrayLength = 10;
74 ArrayBlockingQueue<String> abq = new ArrayBlockingQueue(arrayLength + 1);
75
76 for (int i = 0; i < arrayLength; i++) {
77 abq.add(Integer.toString(i));
78 }
79
80 Queue q = Collections.checkedQueue(abq, String.class);
81 q.add(0);
82 }
83
84 /**
85 * This test tests the CheckedQueue.add method. It creates a queue of one
86 * {@code String}, gets the checked queue, and attempt to add an Integer to
87 * the checked queue.
88 */
89 @Test(expectedExceptions = ClassCastException.class)
90 public void testAddFail2() {
91 ArrayBlockingQueue<String> abq = new ArrayBlockingQueue(1);
92 Queue q = Collections.checkedQueue(abq, String.class);
93
94 q.add(0);
95 }
96
97 /**
98 * This test tests the Collections.checkedQueue method call for nulls in
99 * each and both of the parameters.
100 */
101 @Test
102 public void testArgs() {
103 ArrayBlockingQueue<String> abq = new ArrayBlockingQueue(1);
104 Queue q;
105
106 try {
107 q = Collections.checkedQueue(null, String.class);
108 fail( "should throw NullPointerException.");
109 } catch(NullPointerException npe) {
110 // Do nothing
111 }
112
113 try {
114 q = Collections.checkedQueue(abq, null);
115 fail( "should throw NullPointerException.");
116 } catch(Exception e) {
117 // Do nothing
118 }
119
120 try {
121 q = Collections.checkedQueue(null, null);
122 fail( "should throw NullPointerException.");
123 } catch(Exception e) {
124 // Do nothing
125 }
126 }
127
128 /**
129 * This test tests the CheckedQueue.offer method.
130 */
131 @Test
132 public void testOffer() {
133 ArrayBlockingQueue<String> abq = new ArrayBlockingQueue(1);
134 Queue q = Collections.checkedQueue(abq, String.class);
135
136 try {
137 q.offer(null);
138 fail("should throw NullPointerException.");
139 } catch (NullPointerException npe) {
140 // Do nothing
141 }
142
143 try {
144 q.offer(0);
145 fail("should throw ClassCastException.");
146 } catch (ClassCastException cce) {
147 // Do nothing
148 }
149
150 assertTrue(q.offer("0"), "queue should have room");
151
152 // no room at the inn!
153 assertFalse(q.offer("1"), "queue should be full");
154 }
155
156 @Test
157 public void testValueCheckedQueue() {
158 Queue<VClass> q = Collections.checkedQueue(new ArrayDeque<>(), VClass.class);
159 q.add(new VClass(1, new int[] { 1 }));
160 if (!q.peek().equals(new VClass(1, new int[] { 1 })))
161 fail("value checkedQueue peek failed");
162 try {
163 ((Queue) q).add("not a Tuple");
164 fail("value checkedQueue accepted wrong type");
165 } catch (ClassCastException expected) { }
166 }
167 }