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
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  22  */
  23 
  24 /*
  25  * @test
  26  * @bug 4894801
  27  * @summary Test that ObjectName.getInstance(ObjectName) preserves key order
  28  * @author Eamonn McManus
  29  * @modules java.management
  30  * @run clean ObjectNameGetInstanceTest
  31  * @run build ObjectNameGetInstanceTest
  32  * @run main ObjectNameGetInstanceTest
  33  */
  34 
  35 import javax.management.*;
  36 
  37 public class ObjectNameGetInstanceTest {
  38     public static void main(String[] args) throws Exception {
  39         System.out.println("Test that ObjectName.getInstance(ObjectName) " +
  40                            "preserves the order of keys in its input");
  41 
  42         final String nonCanonical = "d:x=y,a=b";
  43         ObjectName nice = new ObjectName(nonCanonical);
  44 
  45         // Check that we are in fact using an ObjectName whose canonical
  46         // form is not the same as the input
  47         if (nice.getCanonicalName().equals(nonCanonical)) {
  48             System.err.println("TEST IS BROKEN: INPUT ALREADY CANONICAL");
  49             System.exit(1);
  50         }
  51 
  52         ObjectName evil = new EvilObjectName(nonCanonical);
  53         ObjectName unEvil = ObjectName.getInstance(evil);
  54         if (unEvil instanceof EvilObjectName) {
  55             System.err.println("FAILS: getInstance did not banish evil");
  56             System.exit(1);
  57         }
  58 
  59         if (nice.equals(unEvil))
  60             System.out.println("Test passes: original key order preserved");
  61         else {
  62             System.out.println("FAILS: key order changed");
  63             System.exit(1);
  64         }
  65     }
  66 
  67     public static class EvilObjectName extends ObjectName {
  68         public EvilObjectName(String s) throws MalformedObjectNameException {
  69             super(s);
  70         }
  71 
  72         public String getCanonicalName() {
  73             return "bogus:canonical=name";
  74         }
  75     }
  76 }