test/java/util/prefs/RemoveNullKeyCheck.java

Print this page




   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 /* @test
  25  * @bug 7160242
  26  * @summary Check if NullPointerException is thrown if the key passed
  27  *          to remove() is null.
  28  */
  29 
  30 import java.util.prefs.Preferences;


  31 
  32 public class RemoveNullKeyCheck {
  33 


  34     public static void main(String[] args) throws Exception {









  35        try {
  36            Preferences node = Preferences.userRoot().node("N1");
  37            node.remove(null);
  38            throw new RuntimeException("Expected NullPointerException " +
  39                                       "not thrown");
  40        } catch (NullPointerException npe) {
  41            System.out.println("NullPointerException thrown");
  42        }
  43     }











































  44 }


   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 /* @test
  25  * @bug 7160242 7165118
  26  * @summary Check if NullPointerException is thrown if the key passed
  27  *          to remove() is null.
  28  */
  29 
  30 import java.util.prefs.Preferences;
  31 import java.util.prefs.AbstractPreferences;
  32 import java.util.prefs.BackingStoreException;
  33 
  34 public class RemoveNullKeyCheck {
  35 
  36     private static boolean failed = false;
  37 
  38     public static void main(String[] args) throws Exception {
  39         checkPreferencesRemove();
  40         checkAbstractPreferencesRemove();
  41         if (failed) {
  42             throw new RuntimeException("Expected NullPointerException " +
  43                                        "not thrown");
  44         }
  45     }
  46 
  47     public static void checkPreferencesRemove() {
  48         try {
  49             Preferences node = Preferences.userRoot().node("N1");
  50             node.remove(null);
  51             failed = true;

  52         } catch (NullPointerException npe) {

  53         }
  54     }
  55    
  56     public static void checkAbstractPreferencesRemove() {
  57 
  58         Preferences abstrPrefs = new AbstractPreferences(null, "") {
  59             @Override
  60             protected void putSpi(String key, String value) {
  61             }
  62             @Override
  63             protected String getSpi(String key) {
  64                 return null;
  65             }
  66             @Override
  67             protected void removeSpi(String key) {
  68             }
  69             @Override
  70             protected void removeNodeSpi() throws BackingStoreException {
  71             }
  72             @Override
  73             protected String[] keysSpi() throws BackingStoreException {
  74                 return new String[0];
  75             }
  76             @Override
  77             protected String[] childrenNamesSpi() throws BackingStoreException {
  78                 return new String[0];
  79             }
  80             @Override
  81             protected AbstractPreferences childSpi(String name) {
  82                 return null;
  83             }
  84             @Override
  85             protected void syncSpi() throws BackingStoreException {
  86             }
  87             @Override
  88             protected void flushSpi() throws BackingStoreException {
  89             }
  90         };
  91         
  92         try { 
  93             abstrPrefs.remove(null);
  94             failed = true;
  95         } catch(NullPointerException npe) {
  96         }
  97     }
  98 }