1 /*
   2  * Copyright (c) 2003, 2015, 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 4943248
  27  * @summary Tests that NullPointerException is thrown when listener is null.
  28  * @author Daniel Fuchs
  29  *
  30  * @run clean ConnectionListenerNullTest
  31  * @run build ConnectionListenerNullTest
  32  * @run main ConnectionListenerNullTest
  33  */
  34 import javax.management.remote.JMXConnector;
  35 import javax.management.remote.JMXServiceURL;
  36 import javax.management.remote.JMXConnectorFactory;
  37 import javax.management.Notification;
  38 import javax.management.NotificationFilter;
  39 import javax.management.NotificationListener;
  40 import java.util.Map;
  41 public class ConnectionListenerNullTest {
  42 
  43     static boolean isPresent(String cn) {
  44         try {
  45             Class.forName(cn);
  46             return true;
  47         } catch (ClassNotFoundException x) {
  48             return false;
  49         }
  50     }
  51 
  52     public static int test(String... urls) {
  53         int errCount = 0;
  54         for (int i=0;i<urls.length;i++) {
  55             try {
  56                 final JMXServiceURL url = new JMXServiceURL(urls[i]);
  57                 final JMXConnector c =
  58                     JMXConnectorFactory.newJMXConnector(url,(Map<String,String>)null);
  59                 final NotificationListener nl = null;
  60                 final NotificationFilter   nf = null;
  61                 final Object               h  = null;
  62                 System.out.println("Testing " + c.getClass().getName());
  63                 try {
  64                     System.out.println(
  65                         "addConnectionNotificationListener(null,null,null)");
  66                     c.addConnectionNotificationListener(nl,nf,h);
  67                     throw new AssertionError("No exception raised");
  68                 } catch (NullPointerException npe) {
  69                     // OK.
  70                 }
  71                 final NotificationListener listener = new
  72                    NotificationListener() {
  73                      public void handleNotification(Notification notification,
  74                                                    Object handback) {
  75                    }
  76                 };
  77                 c.addConnectionNotificationListener(listener,nf,h);
  78                 try {
  79                     System.out.println(
  80                            "removeConnectionNotificationListener(null)");
  81                     c.removeConnectionNotificationListener(nl);
  82                     throw new AssertionError("No exception raised");
  83                 } catch (NullPointerException npe) {
  84                     // OK.
  85                 }
  86                 try {
  87                     System.out.println(
  88                       "removeConnectionNotificationListener(null,null,null)");
  89                     c.removeConnectionNotificationListener(nl,nf,h);
  90                     throw new AssertionError("No exception raised");
  91                 } catch (NullPointerException npe) {
  92                     // OK.
  93                 }
  94                 c.removeConnectionNotificationListener(listener);
  95                 System.out.println(c.getClass().getName() +
  96                                    " successfully tested.");
  97             } catch (Exception x) {
  98                 System.err.println("Unexpected exception for " +
  99                                    urls[i] + ": " + x);
 100                 x.printStackTrace();
 101                 errCount++;
 102             } catch (AssertionError e) {
 103                 System.err.println("Unexpected assertion error for " +
 104                                    urls[i] + ": " + e);
 105                 e.printStackTrace();
 106                 errCount++;
 107             }
 108         }
 109         return errCount;
 110     }
 111 
 112     public static void main(String args[]) {
 113         int errCount = 0;
 114 
 115         // mandatory
 116         errCount += test("service:jmx:rmi://");
 117 
 118         // optional
 119         if (isPresent("javax.management.remote.rmi._RMIConnectionImpl_Tie"))
 120             errCount += test("service:jmx:iiop://");
 121         if (isPresent("javax.management.remote.generic.GenericConnector"))
 122             errCount += test("service:jmx:jmxmp://");
 123 
 124         if (errCount > 0) {
 125             throw new RuntimeException("ConnectionListenerNullTest failed: " +
 126                 errCount + " error(s) reported.");
 127         }
 128         System.out.println("ConnectionListenerNullTest passed.");
 129     }
 130 }