1 /*

     2  * Copyright 1999 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

    20  * CA 95054 USA or visit www.sun.com if you need additional information or

    21  * have any questions.

    22  */

    23 

    24 /* @test

    25  * @bug 4227192

    26  * @summary This is a basic functional test of the dynamic proxy API (part 1).

    27  * @author Peter Jones

    28  *

    29  * @build Basic1

    30  * @run main Basic1

    31  */

    32 

    33 import java.lang.reflect.*;

    34 import java.security.*;

    35 import java.util.*;

    36 

    37 public class Basic1 {

    38 

    39     public static void main(String[] args) {

    40 

    41         System.err.println(

    42             "\nBasic functional test of dynamic proxy API, part 1\n");

    43 

    44         try {

    45             Class[] interfaces =

    46                 new Class[] { Runnable.class, Observer.class };

    47 

    48             ClassLoader loader = ClassLoader.getSystemClassLoader();

    49 

    50             /*

    51              * Generate a proxy class.

    52              */

    53             Class proxyClass = Proxy.getProxyClass(loader, interfaces);

    54             System.err.println("+ generated proxy class: " + proxyClass);

    55 

    56             /*

    57              * Verify that it is public, final, and not abstract.

    58              */

    59             int flags = proxyClass.getModifiers();

    60             System.err.println(

    61                 "+ proxy class's modifiers: " + Modifier.toString(flags));

    62             if (!Modifier.isPublic(flags)) {

    63                 throw new RuntimeException("proxy class in not public");

    64             }

    65             if (!Modifier.isFinal(flags)) {

    66                 throw new RuntimeException("proxy class in not final");

    67             }

    68             if (Modifier.isAbstract(flags)) {

    69                 throw new RuntimeException("proxy class in abstract");

    70             }

    71 

    72             /*

    73              * Verify that it is assignable to the proxy interfaces.

    74              */

    75             for (int i = 0; i < interfaces.length; i++) {

    76                 if (!interfaces[i].isAssignableFrom(proxyClass)) {

    77                     throw new RuntimeException(

    78                         "proxy class not assignable to proxy interface " +

    79                         interfaces[i].getName());

    80                 }

    81             }

    82 

    83             /*

    84              * Verify that it has the given permutation of interfaces.

    85              */

    86             List l1 = Arrays.asList(interfaces);

    87             List l2 = Arrays.asList(proxyClass.getInterfaces());

    88             System.err.println("+ proxy class's interfaces: " + l2);

    89             if (!l1.equals(l2)) {

    90                 throw new RuntimeException(

    91                     "proxy class interfaces are " + l2 +

    92                     " (expected " + l1 + ")");

    93             }

    94 

    95             /*

    96              * Verify that system agress that it is a proxy class.

    97              */

    98             if (Proxy.isProxyClass(Object.class)) {

    99                 throw new RuntimeException(

   100                     "Proxy.isProxyClass returned true for java.lang.Object");

   101             }

   102             if (!Proxy.isProxyClass(proxyClass)) {

   103                 throw new RuntimeException(

   104                     "Proxy.isProxyClass returned false for proxy class");

   105             }

   106 

   107             /*

   108              * Verify that its protection domain is the bootstrap domain.

   109              */

   110             ProtectionDomain pd = proxyClass.getProtectionDomain();

   111             System.err.println("+ proxy class's protextion domain: " + pd);

   112             if (!pd.implies(new AllPermission())) {

   113                 throw new RuntimeException(

   114                     "proxy class does not have AllPermission");

   115             }

   116 

   117             /*

   118              * Verify that it has a constructor that takes an

   119              * InvocationHandler instance.

   120              */

   121             Constructor cons = proxyClass.getConstructor(

   122                 new Class[] { InvocationHandler.class });

   123 

   124             /*

   125              * Construct a proxy instance.

   126              */

   127             Handler handler = new Handler();

   128             Object proxy = cons.newInstance(new Object[] { handler });

   129             handler.currentProxy = proxy;

   130 

   131             /*

   132              * Invoke a method on a proxy instance.

   133              */

   134             Method m = Runnable.class.getMethod("run", null);

   135             ((Runnable) proxy).run();

   136             if (!handler.lastMethod.equals(m)) {

   137                 throw new RuntimeException(

   138                     "proxy method invocation failure (lastMethod = " +

   139                         handler.lastMethod + ")");

   140             }

   141 

   142             System.err.println("\nTEST PASSED");

   143 

   144         } catch (Exception e) {

   145             System.err.println("\nTEST FAILED:");

   146             e.printStackTrace();

   147             throw new RuntimeException("TEST FAILED: " + e.toString());

   148         }

   149     }

   150 

   151     public static class Handler implements InvocationHandler {

   152 

   153         Object currentProxy;

   154         Method lastMethod;

   155 

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

   157             throws Throwable

   158         {

   159             if (proxy != currentProxy) {

   160                 throw new RuntimeException(

   161                     "wrong proxy instance passed to invoke method");

   162             }

   163             lastMethod = method;

   164             return null;

   165         }

   166     }

   167 }