1 /* ToString.java -- Tests which checks that the toString method on a proxy is

     2  correctly forwarded to the InvocationHandler

     3  Copyright (C) 2006 olivier jolly <olivier.jolly@pcedev.com>

     4  This file is part of Mauve.

     5 

     6  Mauve is free software; you can redistribute it and/or modify

     7  it under the terms of the GNU General Public License as published by

     8  the Free Software Foundation; either version 2, or (at your option)

     9  any later version.

    10 

    11  Mauve is distributed in the hope that it will be useful, but

    12  WITHOUT ANY WARRANTY; without even the implied warranty of

    13  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

    14  General Public License for more details.

    15 

    16  You should have received a copy of the GNU General Public License

    17  along with Mauve; see the file COPYING.  If not, write to the

    18  Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA

    19  02110-1301 USA.

    20 

    21  */

    22 

    23 // Tags: JDK1.3

    24 

    25 

    26 package gnu.testlet.java.lang.reflect.Proxy;

    27 

    28 import gnu.testlet.TestHarness;

    29 import gnu.testlet.Testlet;

    30 

    31 import java.io.Serializable;

    32 import java.lang.reflect.InvocationHandler;

    33 import java.lang.reflect.Method;

    34 import java.lang.reflect.Proxy;

    35 

    36 /**

    37  * Test which ensure that the toString method is properly forwarded to the

    38  * InvocationHandler. This tests notably fails with cacao 0.94

    39  * (http://b2.complang.tuwien.ac.at/cgi-bin/bugzilla/show_bug.cgi?id=17)

    40  * @author olivier jolly <olivier.jolly@pcedev.com>

    41  * @see java.lang.reflect.InvocationHandler

    42  */

    43 public class ToString implements Testlet

    44 {

    45 

    46   public void test(TestHarness harness)

    47   {

    48     InvocationHandler handler = new FacadeInvocationHandler(new Foo());

    49     Object proxy = Proxy.newProxyInstance(this.getClass().getClassLoader(),

    50                                           new Class[] { Serializable.class },

    51                                           handler);

    52     harness.check(proxy.toString(), "foo toString() result", "toString() test");

    53   }

    54 

    55   /**

    56    * Very simple facade which delegates all calls to a target object.

    57    */

    58   private static class FacadeInvocationHandler implements InvocationHandler

    59   {

    60 

    61     Object facaded;

    62 

    63     public FacadeInvocationHandler(Object facaded)

    64     {

    65       this.facaded = facaded;

    66     }

    67 

    68     public Object invoke(Object proxy, Method method, Object[] args)

    69         throws Throwable

    70     {

    71       return method.invoke(facaded, args);

    72     }

    73 

    74   }

    75 

    76   /**

    77    * Very simple class with a predictable toString() result.

    78    */

    79   private static class Foo

    80   {

    81 

    82     public String toString()

    83     {

    84       return "foo toString() result";

    85     }

    86 

    87   }

    88 

    89 }