1 /*
2 * Copyright (c) 2010, 2011, 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 import java.io.*;
25 import java.util.*;
26
27 /*
28 * @test
29 * @bug 6911258 6962571 6963622 6991528 7005628 8012044
30 * @summary Basic tests of suppressed exceptions
31 * @author Joseph D. Darcy
32 */
33
34 public class SuppressedExceptions {
35 private static String message = "Bad suppressed exception information";
36
37 public static void main(String... args) throws Exception {
38 noSelfSuppression();
39 basicSupressionTest();
40 serializationTest();
41 selfReference();
42 noModification();
43 initCausePlumbing();
44 }
45
46 private static void noSelfSuppression() {
47 Throwable throwable = new Throwable();
48 try {
49 throwable.addSuppressed(throwable);
50 throw new RuntimeException("IllegalArgumentException for self-suppresion not thrown.");
51 } catch (IllegalArgumentException iae) {
52 // Expected to be here
53 if (iae.getCause() != throwable)
54 throw new RuntimeException("Bad cause after self-suppresion.");
55 }
56 }
57
58 private static void basicSupressionTest() {
59 Throwable throwable = new Throwable();
60 RuntimeException suppressed = new RuntimeException("A suppressed exception.");
61 AssertionError repressed = new AssertionError("A repressed error.");
62
63 Throwable[] t0 = throwable.getSuppressed();
64 if (t0.length != 0) {
65 throw new RuntimeException(message);
66 }
67 throwable.printStackTrace();
68
69 throwable.addSuppressed(suppressed);
70 Throwable[] t1 = throwable.getSuppressed();
71 if (t1.length != 1 ||
72 t1[0] != suppressed) {throw new RuntimeException(message);
73 }
74 throwable.printStackTrace();
75
76 throwable.addSuppressed(repressed);
77 Throwable[] t2 = throwable.getSuppressed();
78 if (t2.length != 2 ||
79 t2[0] != suppressed ||
80 t2[1] != repressed) {
81 throw new RuntimeException(message);
82 }
83 throwable.printStackTrace();
84 }
85
86 private static void serializationTest() throws Exception {
87 /*
88 * Bytes of the serial form of
89 *
90 * (new Throwable())setStackTrace(new StackTraceElement[0])
91 *
92 * from JDK 6; suppressedException field will be missing and
93 * thus default to null upon deserialization.
94 */
95 byte[] bytes = {
96 (byte)0xac, (byte)0xed, (byte)0x00, (byte)0x05, (byte)0x73, (byte)0x72, (byte)0x00, (byte)0x13,
97 (byte)0x6a, (byte)0x61, (byte)0x76, (byte)0x61, (byte)0x2e, (byte)0x6c, (byte)0x61, (byte)0x6e,
98 (byte)0x67, (byte)0x2e, (byte)0x54, (byte)0x68, (byte)0x72, (byte)0x6f, (byte)0x77, (byte)0x61,
99 (byte)0x62, (byte)0x6c, (byte)0x65, (byte)0xd5, (byte)0xc6, (byte)0x35, (byte)0x27, (byte)0x39,
100 (byte)0x77, (byte)0xb8, (byte)0xcb, (byte)0x03, (byte)0x00, (byte)0x03, (byte)0x4c, (byte)0x00,
101 (byte)0x05, (byte)0x63, (byte)0x61, (byte)0x75, (byte)0x73, (byte)0x65, (byte)0x74, (byte)0x00,
102 (byte)0x15, (byte)0x4c, (byte)0x6a, (byte)0x61, (byte)0x76, (byte)0x61, (byte)0x2f, (byte)0x6c,
103 (byte)0x61, (byte)0x6e, (byte)0x67, (byte)0x2f, (byte)0x54, (byte)0x68, (byte)0x72, (byte)0x6f,
104 (byte)0x77, (byte)0x61, (byte)0x62, (byte)0x6c, (byte)0x65, (byte)0x3b, (byte)0x4c, (byte)0x00,
105 (byte)0x0d, (byte)0x64, (byte)0x65, (byte)0x74, (byte)0x61, (byte)0x69, (byte)0x6c, (byte)0x4d,
106 (byte)0x65, (byte)0x73, (byte)0x73, (byte)0x61, (byte)0x67, (byte)0x65, (byte)0x74, (byte)0x00,
107 (byte)0x12, (byte)0x4c, (byte)0x6a, (byte)0x61, (byte)0x76, (byte)0x61, (byte)0x2f, (byte)0x6c,
108 (byte)0x61, (byte)0x6e, (byte)0x67, (byte)0x2f, (byte)0x53, (byte)0x74, (byte)0x72, (byte)0x69,
109 (byte)0x6e, (byte)0x67, (byte)0x3b, (byte)0x5b, (byte)0x00, (byte)0x0a, (byte)0x73, (byte)0x74,
110 (byte)0x61, (byte)0x63, (byte)0x6b, (byte)0x54, (byte)0x72, (byte)0x61, (byte)0x63, (byte)0x65,
111 (byte)0x74, (byte)0x00, (byte)0x1e, (byte)0x5b, (byte)0x4c, (byte)0x6a, (byte)0x61, (byte)0x76,
112 (byte)0x61, (byte)0x2f, (byte)0x6c, (byte)0x61, (byte)0x6e, (byte)0x67, (byte)0x2f, (byte)0x53,
113 (byte)0x74, (byte)0x61, (byte)0x63, (byte)0x6b, (byte)0x54, (byte)0x72, (byte)0x61, (byte)0x63,
114 (byte)0x65, (byte)0x45, (byte)0x6c, (byte)0x65, (byte)0x6d, (byte)0x65, (byte)0x6e, (byte)0x74,
115 (byte)0x3b, (byte)0x78, (byte)0x70, (byte)0x71, (byte)0x00, (byte)0x7e, (byte)0x00, (byte)0x04,
116 (byte)0x70, (byte)0x75, (byte)0x72, (byte)0x00, (byte)0x1e, (byte)0x5b, (byte)0x4c, (byte)0x6a,
117 (byte)0x61, (byte)0x76, (byte)0x61, (byte)0x2e, (byte)0x6c, (byte)0x61, (byte)0x6e, (byte)0x67,
118 (byte)0x2e, (byte)0x53, (byte)0x74, (byte)0x61, (byte)0x63, (byte)0x6b, (byte)0x54, (byte)0x72,
119 (byte)0x61, (byte)0x63, (byte)0x65, (byte)0x45, (byte)0x6c, (byte)0x65, (byte)0x6d, (byte)0x65,
120 (byte)0x6e, (byte)0x74, (byte)0x3b, (byte)0x02, (byte)0x46, (byte)0x2a, (byte)0x3c, (byte)0x3c,
121 (byte)0xfd, (byte)0x22, (byte)0x39, (byte)0x02, (byte)0x00, (byte)0x00, (byte)0x78, (byte)0x70,
122 (byte)0x00, (byte)0x00, (byte)0x00, (byte)0x00, (byte)0x78, (byte)0xac, (byte)0xed, (byte)0x00,
123 (byte)0x05, (byte)0x73, (byte)0x72, (byte)0x00, (byte)0x13, (byte)0x6a, (byte)0x61, (byte)0x76,
124 (byte)0x61, (byte)0x2e, (byte)0x6c, (byte)0x61, (byte)0x6e, (byte)0x67, (byte)0x2e, (byte)0x54,
125 (byte)0x68, (byte)0x72, (byte)0x6f, (byte)0x77, (byte)0x61, (byte)0x62, (byte)0x6c, (byte)0x65,
126 (byte)0xd5, (byte)0xc6, (byte)0x35, (byte)0x27, (byte)0x39, (byte)0x77, (byte)0xb8, (byte)0xcb,
127 (byte)0x03, (byte)0x00, (byte)0x03, (byte)0x4c, (byte)0x00, (byte)0x05, (byte)0x63, (byte)0x61,
128 (byte)0x75, (byte)0x73, (byte)0x65, (byte)0x74, (byte)0x00, (byte)0x15, (byte)0x4c, (byte)0x6a,
129 (byte)0x61, (byte)0x76, (byte)0x61, (byte)0x2f, (byte)0x6c, (byte)0x61, (byte)0x6e, (byte)0x67,
130 (byte)0x2f, (byte)0x54, (byte)0x68, (byte)0x72, (byte)0x6f, (byte)0x77, (byte)0x61, (byte)0x62,
131 (byte)0x6c, (byte)0x65, (byte)0x3b, (byte)0x4c, (byte)0x00, (byte)0x0d, (byte)0x64, (byte)0x65,
132 (byte)0x74, (byte)0x61, (byte)0x69, (byte)0x6c, (byte)0x4d, (byte)0x65, (byte)0x73, (byte)0x73,
133 (byte)0x61, (byte)0x67, (byte)0x65, (byte)0x74, (byte)0x00, (byte)0x12, (byte)0x4c, (byte)0x6a,
134 (byte)0x61, (byte)0x76, (byte)0x61, (byte)0x2f, (byte)0x6c, (byte)0x6e, (byte)0x67, (byte)0x3b,
135 (byte)0x61, (byte)0x6e, (byte)0x67, (byte)0x2f, (byte)0x53, (byte)0x74, (byte)0x72, (byte)0x69,
136 (byte)0x5b, (byte)0x00, (byte)0x0a, (byte)0x73, (byte)0x74, (byte)0x61, (byte)0x63, (byte)0x6b,
137 (byte)0x54, (byte)0x72, (byte)0x61, (byte)0x63, (byte)0x65, (byte)0x74, (byte)0x00, (byte)0x1e,
138 (byte)0x5b, (byte)0x4c, (byte)0x6a, (byte)0x61, (byte)0x76, (byte)0x61, (byte)0x2f, (byte)0x6c,
139 (byte)0x61, (byte)0x6e, (byte)0x67, (byte)0x2f, (byte)0x53, (byte)0x74, (byte)0x61, (byte)0x63,
140 (byte)0x6b, (byte)0x54, (byte)0x72, (byte)0x61, (byte)0x63, (byte)0x65, (byte)0x45, (byte)0x6c,
141 (byte)0x65, (byte)0x6d, (byte)0x65, (byte)0x6e, (byte)0x74, (byte)0x3b, (byte)0x78, (byte)0x70,
142 (byte)0x71, (byte)0x00, (byte)0x7e, (byte)0x00, (byte)0x04, (byte)0x70, (byte)0x75, (byte)0x72,
143 (byte)0x00, (byte)0x1e, (byte)0x5b, (byte)0x4c, (byte)0x6a, (byte)0x61, (byte)0x76, (byte)0x61,
144 (byte)0x2e, (byte)0x6c, (byte)0x61, (byte)0x6e, (byte)0x67, (byte)0x2e, (byte)0x53, (byte)0x74,
145 (byte)0x61, (byte)0x63, (byte)0x6b, (byte)0x54, (byte)0x72, (byte)0x61, (byte)0x63, (byte)0x65,
146 (byte)0x45, (byte)0x6c, (byte)0x65, (byte)0x6d, (byte)0x65, (byte)0x6e, (byte)0x74, (byte)0x3b,
147 (byte)0x02, (byte)0x46, (byte)0x2a, (byte)0x3c, (byte)0x3c, (byte)0xfd, (byte)0x22, (byte)0x39,
148 (byte)0x02, (byte)0x00, (byte)0x00, (byte)0x78, (byte)0x70,
149 };
150
151 try(ByteArrayInputStream bais = new ByteArrayInputStream(bytes);
152 ObjectInputStream ois = new ObjectInputStream(bais)) {
153 Object o = ois.readObject();
154 Throwable throwable = (Throwable) o;
155
156 System.err.println("TESTING SERIALIZED EXCEPTION");
157
158 Throwable[] t0 = throwable.getSuppressed();
159 if (t0.length != 0) { // Will fail if t0 is null.
160 throw new RuntimeException(message);
161 }
162 throwable.printStackTrace();
163 }
164 }
165
166 private static void selfReference() {
167 Throwable throwable1 = new RuntimeException();
168 Throwable throwable2 = new AssertionError();
169 throwable1.initCause(throwable2);
170 throwable2.initCause(throwable1);
171
172 throwable1.printStackTrace();
173
174 throwable1.addSuppressed(throwable2);
175 throwable2.addSuppressed(throwable1);
176
177 throwable1.printStackTrace();
178 }
179
180 private static void noModification() {
181 Throwable t = new NoSuppression(false);
182
183 Throwable[] t0 = t.getSuppressed();
184 if (t0.length != 0)
185 throw new RuntimeException("Bad nonzero length of suppressed exceptions.");
186
187 t.addSuppressed(new ArithmeticException());
188
189 // Make sure a suppressed exception did *not* get added.
190 t0 = t.getSuppressed();
191 if (t0.length != 0)
192 throw new RuntimeException("Bad nonzero length of suppressed exceptions.");
193
194 Throwable suppressed = new ArithmeticException();
195 t = new NoSuppression(true); // Suppression enabled
196 // Make sure addSuppressed(null) throws an NPE
197 try {
198 t.addSuppressed(null);
199 throw new RuntimeException("NPE not thrown!");
200 } catch(NullPointerException e) {
201 ; // Expected
202 }
203 t.addSuppressed(suppressed);
204 t0 = t.getSuppressed();
205 if (t0.length != 1 || t0[0] != suppressed)
206 throw new RuntimeException("Expected suppression did not occur.");
207 }
208
209 private static class NoSuppression extends Throwable {
210 public NoSuppression(boolean enableSuppression) {
211 super("The medium.", null, enableSuppression, true);
212 }
213 }
214
215 private static void initCausePlumbing() {
216 Throwable t1 = new Throwable();
217 Throwable t2 = new Throwable("message", t1);
218 Throwable t3 = new Throwable();
219
220 try {
221 t2.initCause(t3);
222 throw new RuntimeException("Shouldn't reach.");
223 } catch (IllegalStateException ise) {
224 if (ise.getCause() != null)
225 throw new RuntimeException("Unexpected cause in ISE", ise);
226 Throwable[] suppressed = ise.getSuppressed();
227 if (suppressed.length != 2 || suppressed[0] != t2 || suppressed[1] != t3)
228 throw new RuntimeException("Bad suppression in ISE", ise);
229 }
230
231 try {
232 t2.initCause(null);
233 throw new RuntimeException("Shouldn't reach.");
234 } catch (IllegalStateException ise) {
235 ; // Expected; don't want an NPE.
236 }
237
238 try {
239 t3.initCause(t3);
240 throw new RuntimeException("Shouldn't reach.");
241 } catch (IllegalArgumentException iae) {
242 if (iae.getCause() != t3)
243 throw new RuntimeException("Unexpected cause in ISE", iae);
244 }
245 }
246 }