bridges/test/java_remote/Bug110892_Test.java

   1 /*
   2  * This file is part of the LibreOffice project.
   3  *
   4  * This Source Code Form is subject to the terms of the Mozilla Public
   5  * License, v. 2.0. If a copy of the MPL was not distributed with this
   6  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   7  *
   8  * This file incorporates work covered by the following license notice:
   9  *
  10  *   Licensed to the Apache Software Foundation (ASF) under one or more
  11  *   contributor license agreements. See the NOTICE file distributed
  12  *   with this work for additional information regarding copyright
  13  *   ownership. The ASF licenses this file to you under the Apache
  14  *   License, Version 2.0 (the "License"); you may not use this file
  15  *   except in compliance with the License. You may obtain a copy of
  16  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  17  */
  18
  19 package test.java_remote;
  20
  21 import com.sun.star.bridge.XInstanceProvider;
  22 import com.sun.star.lib.uno.typeinfo.MethodTypeInfo;
  23 import com.sun.star.lib.uno.typeinfo.TypeInfo;
  24 import com.sun.star.uno.UnoRuntime;
  25 import com.sun.star.uno.XComponentContext;
  26 import com.sun.star.uno.XInterface;
  27 import complexlib.ComplexTestCase;
  28 import util.WaitUnreachable;
  29 import test.lib.TestBed;
  30
  31 /**
  32  * Test case for bug #110892#.
  33  *
  34  * <p>Bug #110892# "Java URP bridge holds objects indefinitely" applies to cases
  35  * where an object is sent from server to client, then recursively back from
  36  * client to server.  In such a case, the client should not increment its
  37  * internal reference count for the object, as the server will never send back a
  38  * corresponding release message.</p>
  39  *
  40  * <p>This test has to detect whether the spawned client process fails to
  41  * garbage-collect an object, which can not be done reliably.  As an
  42  * approximation, it waits for 10 sec and considers the process failing if it
  43  * has not garbage-collected the object by then.</p>
  44  */
  45 public final class Bug110892_Test extends ComplexTestCase {
  46     public String[] getTestMethodNames() {
  47         return new String[] { "test" };
  48     }
  49
  50     public void test() throws Exception {
  51         assure("test",
  52                new TestBed().execute(new Provider(), false, Client.class,
  53                                      10000));
  54     }
  55
  56     public static final class Client extends TestBed.Client {
  57         public static void main(String[] args) {
  58             new Client().execute();
  59         }
  60
  61         protected boolean run(XComponentContext context) throws Throwable {
  62             XTest test = UnoRuntime.queryInterface(
  63                 XTest.class, getBridge(context).getInstance("Test"));
  64             test.start(new ClientObject());
  65             synchronized (lock) {
  66                 unreachable.waitUnreachable();
  67             }
  68             return true;
  69         }
  70
  71         private final class ClientObject implements XClientObject {
  72             public void call(XServerObject server, XInterface object) {
  73                 synchronized (lock) {
  74                     unreachable = new WaitUnreachable(object);
  75                 }
  76                 server.call(object);
  77             }
  78         }
  79
  80         private final Object lock = new Object();
  81         private WaitUnreachable unreachable = null;
  82     }
  83
  84     private static final class Provider implements XInstanceProvider {
  85         public Object getInstance(String instanceName) {
  86             return new XTest() {
  87                     public void start(XClientObject client) {
  88                         client.call(
  89                             new XServerObject() {
  90                                 public void call(XInterface object) {}
  91                             },
  92                             new XInterface() {});
  93                     }
  94                 };
  95         }
  96     }
  97
  98     public interface XClientObject extends XInterface {
  99         void call(XServerObject server, XInterface object);
 100
 101         TypeInfo[] UNOTYPEINFO = { new MethodTypeInfo("call", 0, 0) };
 102     }
 103
 104     public interface XServerObject extends XInterface {
 105         void call(XInterface object);
 106
 107         TypeInfo[] UNOTYPEINFO = { new MethodTypeInfo("call", 0, 0) };
 108     }
 109
 110     public interface XTest extends XInterface {
 111         void start(XClientObject client);
 112
 113         TypeInfo[] UNOTYPEINFO = { new MethodTypeInfo("start", 0, 0) };
 114     }
 115 }