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 } 44 45 private static void noSelfSuppression() { 46 Throwable throwable = new Throwable(); 47 try { 48 throwable.addSuppressed(throwable); 49 throw new RuntimeException("IllegalArgumentException for self-suppresion not thrown."); 50 } catch (IllegalArgumentException iae) { 51 // Expected to be here 52 if (iae.getCause() != throwable) 53 throw new RuntimeException("Bad cause after self-suppresion."); 54 } 55 } 56 57 private static void basicSupressionTest() { 58 Throwable throwable = new Throwable(); 59 RuntimeException suppressed = new RuntimeException("A suppressed exception."); 60 AssertionError repressed = new AssertionError("A repressed error."); 61 62 Throwable[] t0 = throwable.getSuppressed(); 63 if (t0.length != 0) { 64 throw new RuntimeException(message); 65 } 66 throwable.printStackTrace(); 67 68 throwable.addSuppressed(suppressed); 69 Throwable[] t1 = throwable.getSuppressed(); 70 if (t1.length != 1 || 71 t1[0] != suppressed) {throw new RuntimeException(message); 72 } 73 throwable.printStackTrace(); 74 75 throwable.addSuppressed(repressed); 76 Throwable[] t2 = throwable.getSuppressed(); 77 if (t2.length != 2 || 78 t2[0] != suppressed || 79 t2[1] != repressed) { 80 throw new RuntimeException(message); 81 } 82 throwable.printStackTrace(); 83 } 84 85 private static void serializationTest() throws Exception { 86 /* 87 * Bytes of the serial form of 88 * 89 * (new Throwable())setStackTrace(new StackTraceElement[0]) 90 * 91 * from JDK 6; suppressedException field will be missing and 92 * thus default to null upon deserialization. 93 */ 94 byte[] bytes = { 95 (byte)0xac, (byte)0xed, (byte)0x00, (byte)0x05, (byte)0x73, (byte)0x72, (byte)0x00, (byte)0x13, 96 (byte)0x6a, (byte)0x61, (byte)0x76, (byte)0x61, (byte)0x2e, (byte)0x6c, (byte)0x61, (byte)0x6e, 97 (byte)0x67, (byte)0x2e, (byte)0x54, (byte)0x68, (byte)0x72, (byte)0x6f, (byte)0x77, (byte)0x61, 98 (byte)0x62, (byte)0x6c, (byte)0x65, (byte)0xd5, (byte)0xc6, (byte)0x35, (byte)0x27, (byte)0x39, 99 (byte)0x77, (byte)0xb8, (byte)0xcb, (byte)0x03, (byte)0x00, (byte)0x03, (byte)0x4c, (byte)0x00, 100 (byte)0x05, (byte)0x63, (byte)0x61, (byte)0x75, (byte)0x73, (byte)0x65, (byte)0x74, (byte)0x00, 101 (byte)0x15, (byte)0x4c, (byte)0x6a, (byte)0x61, (byte)0x76, (byte)0x61, (byte)0x2f, (byte)0x6c, 102 (byte)0x61, (byte)0x6e, (byte)0x67, (byte)0x2f, (byte)0x54, (byte)0x68, (byte)0x72, (byte)0x6f, 103 (byte)0x77, (byte)0x61, (byte)0x62, (byte)0x6c, (byte)0x65, (byte)0x3b, (byte)0x4c, (byte)0x00, 104 (byte)0x0d, (byte)0x64, (byte)0x65, (byte)0x74, (byte)0x61, (byte)0x69, (byte)0x6c, (byte)0x4d, 105 (byte)0x65, (byte)0x73, (byte)0x73, (byte)0x61, (byte)0x67, (byte)0x65, (byte)0x74, (byte)0x00, 106 (byte)0x12, (byte)0x4c, (byte)0x6a, (byte)0x61, (byte)0x76, (byte)0x61, (byte)0x2f, (byte)0x6c, 107 (byte)0x61, (byte)0x6e, (byte)0x67, (byte)0x2f, (byte)0x53, (byte)0x74, (byte)0x72, (byte)0x69, 108 (byte)0x6e, (byte)0x67, (byte)0x3b, (byte)0x5b, (byte)0x00, (byte)0x0a, (byte)0x73, (byte)0x74, 109 (byte)0x61, (byte)0x63, (byte)0x6b, (byte)0x54, (byte)0x72, (byte)0x61, (byte)0x63, (byte)0x65, 110 (byte)0x74, (byte)0x00, (byte)0x1e, (byte)0x5b, (byte)0x4c, (byte)0x6a, (byte)0x61, (byte)0x76, 111 (byte)0x61, (byte)0x2f, (byte)0x6c, (byte)0x61, (byte)0x6e, (byte)0x67, (byte)0x2f, (byte)0x53, 112 (byte)0x74, (byte)0x61, (byte)0x63, (byte)0x6b, (byte)0x54, (byte)0x72, (byte)0x61, (byte)0x63, 113 (byte)0x65, (byte)0x45, (byte)0x6c, (byte)0x65, (byte)0x6d, (byte)0x65, (byte)0x6e, (byte)0x74, 114 (byte)0x3b, (byte)0x78, (byte)0x70, (byte)0x71, (byte)0x00, (byte)0x7e, (byte)0x00, (byte)0x04, 115 (byte)0x70, (byte)0x75, (byte)0x72, (byte)0x00, (byte)0x1e, (byte)0x5b, (byte)0x4c, (byte)0x6a, 116 (byte)0x61, (byte)0x76, (byte)0x61, (byte)0x2e, (byte)0x6c, (byte)0x61, (byte)0x6e, (byte)0x67, 117 (byte)0x2e, (byte)0x53, (byte)0x74, (byte)0x61, (byte)0x63, (byte)0x6b, (byte)0x54, (byte)0x72, 118 (byte)0x61, (byte)0x63, (byte)0x65, (byte)0x45, (byte)0x6c, (byte)0x65, (byte)0x6d, (byte)0x65, 119 (byte)0x6e, (byte)0x74, (byte)0x3b, (byte)0x02, (byte)0x46, (byte)0x2a, (byte)0x3c, (byte)0x3c, 120 (byte)0xfd, (byte)0x22, (byte)0x39, (byte)0x02, (byte)0x00, (byte)0x00, (byte)0x78, (byte)0x70, 121 (byte)0x00, (byte)0x00, (byte)0x00, (byte)0x00, (byte)0x78, (byte)0xac, (byte)0xed, (byte)0x00, 122 (byte)0x05, (byte)0x73, (byte)0x72, (byte)0x00, (byte)0x13, (byte)0x6a, (byte)0x61, (byte)0x76, 123 (byte)0x61, (byte)0x2e, (byte)0x6c, (byte)0x61, (byte)0x6e, (byte)0x67, (byte)0x2e, (byte)0x54, 124 (byte)0x68, (byte)0x72, (byte)0x6f, (byte)0x77, (byte)0x61, (byte)0x62, (byte)0x6c, (byte)0x65, 125 (byte)0xd5, (byte)0xc6, (byte)0x35, (byte)0x27, (byte)0x39, (byte)0x77, (byte)0xb8, (byte)0xcb, 126 (byte)0x03, (byte)0x00, (byte)0x03, (byte)0x4c, (byte)0x00, (byte)0x05, (byte)0x63, (byte)0x61, 127 (byte)0x75, (byte)0x73, (byte)0x65, (byte)0x74, (byte)0x00, (byte)0x15, (byte)0x4c, (byte)0x6a, 128 (byte)0x61, (byte)0x76, (byte)0x61, (byte)0x2f, (byte)0x6c, (byte)0x61, (byte)0x6e, (byte)0x67, 129 (byte)0x2f, (byte)0x54, (byte)0x68, (byte)0x72, (byte)0x6f, (byte)0x77, (byte)0x61, (byte)0x62, 130 (byte)0x6c, (byte)0x65, (byte)0x3b, (byte)0x4c, (byte)0x00, (byte)0x0d, (byte)0x64, (byte)0x65, 131 (byte)0x74, (byte)0x61, (byte)0x69, (byte)0x6c, (byte)0x4d, (byte)0x65, (byte)0x73, (byte)0x73, 132 (byte)0x61, (byte)0x67, (byte)0x65, (byte)0x74, (byte)0x00, (byte)0x12, (byte)0x4c, (byte)0x6a, 133 (byte)0x61, (byte)0x76, (byte)0x61, (byte)0x2f, (byte)0x6c, (byte)0x6e, (byte)0x67, (byte)0x3b, 134 (byte)0x61, (byte)0x6e, (byte)0x67, (byte)0x2f, (byte)0x53, (byte)0x74, (byte)0x72, (byte)0x69, 135 (byte)0x5b, (byte)0x00, (byte)0x0a, (byte)0x73, (byte)0x74, (byte)0x61, (byte)0x63, (byte)0x6b, 136 (byte)0x54, (byte)0x72, (byte)0x61, (byte)0x63, (byte)0x65, (byte)0x74, (byte)0x00, (byte)0x1e, 137 (byte)0x5b, (byte)0x4c, (byte)0x6a, (byte)0x61, (byte)0x76, (byte)0x61, (byte)0x2f, (byte)0x6c, 138 (byte)0x61, (byte)0x6e, (byte)0x67, (byte)0x2f, (byte)0x53, (byte)0x74, (byte)0x61, (byte)0x63, 139 (byte)0x6b, (byte)0x54, (byte)0x72, (byte)0x61, (byte)0x63, (byte)0x65, (byte)0x45, (byte)0x6c, 140 (byte)0x65, (byte)0x6d, (byte)0x65, (byte)0x6e, (byte)0x74, (byte)0x3b, (byte)0x78, (byte)0x70, 141 (byte)0x71, (byte)0x00, (byte)0x7e, (byte)0x00, (byte)0x04, (byte)0x70, (byte)0x75, (byte)0x72, 142 (byte)0x00, (byte)0x1e, (byte)0x5b, (byte)0x4c, (byte)0x6a, (byte)0x61, (byte)0x76, (byte)0x61, 143 (byte)0x2e, (byte)0x6c, (byte)0x61, (byte)0x6e, (byte)0x67, (byte)0x2e, (byte)0x53, (byte)0x74, 144 (byte)0x61, (byte)0x63, (byte)0x6b, (byte)0x54, (byte)0x72, (byte)0x61, (byte)0x63, (byte)0x65, 145 (byte)0x45, (byte)0x6c, (byte)0x65, (byte)0x6d, (byte)0x65, (byte)0x6e, (byte)0x74, (byte)0x3b, 146 (byte)0x02, (byte)0x46, (byte)0x2a, (byte)0x3c, (byte)0x3c, (byte)0xfd, (byte)0x22, (byte)0x39, 147 (byte)0x02, (byte)0x00, (byte)0x00, (byte)0x78, (byte)0x70, 148 }; 149 150 try(ByteArrayInputStream bais = new ByteArrayInputStream(bytes); 151 ObjectInputStream ois = new ObjectInputStream(bais)) { 152 Object o = ois.readObject(); 153 Throwable throwable = (Throwable) o; 154 155 System.err.println("TESTING SERIALIZED EXCEPTION"); 156 157 Throwable[] t0 = throwable.getSuppressed(); 158 if (t0.length != 0) { // Will fail if t0 is null. 159 throw new RuntimeException(message); 160 } 161 throwable.printStackTrace(); 162 } 163 } 164 165 private static void selfReference() { 166 Throwable throwable1 = new RuntimeException(); 167 Throwable throwable2 = new AssertionError(); 168 throwable1.initCause(throwable2); 169 throwable2.initCause(throwable1); 170 171 throwable1.printStackTrace(); 172 173 throwable1.addSuppressed(throwable2); 174 throwable2.addSuppressed(throwable1); 175 176 throwable1.printStackTrace(); 177 } 178 179 private static void noModification() { 180 Throwable t = new NoSuppression(false); 181 182 Throwable[] t0 = t.getSuppressed(); 183 if (t0.length != 0) 184 throw new RuntimeException("Bad nonzero length of suppressed exceptions."); 185 186 t.addSuppressed(new ArithmeticException()); 187 188 // Make sure a suppressed exception did *not* get added. 189 t0 = t.getSuppressed(); 190 if (t0.length != 0) 191 throw new RuntimeException("Bad nonzero length of suppressed exceptions."); 192 193 Throwable suppressed = new ArithmeticException(); 194 t = new NoSuppression(true); // Suppression enabled 195 // Make sure addSuppressed(null) throws an NPE 196 try { 197 t.addSuppressed(null); 198 throw new RuntimeException("NPE not thrown!"); 199 } catch(NullPointerException e) { 200 ; // Expected 201 } 202 t.addSuppressed(suppressed); 203 t0 = t.getSuppressed(); 204 if (t0.length != 1 || t0[0] != suppressed) 205 throw new RuntimeException("Expected suppression did not occur."); 206 } 207 208 private static class NoSuppression extends Throwable { 209 public NoSuppression(boolean enableSuppression) { 210 super("The medium.", null, enableSuppression, true); 211 } 212 } 213 }