1   /*
2    * Copyright (c) 1998, 2005 Gargoyle Software Inc. All rights reserved.
3    *
4    * Redistribution and use in source and binary forms, with or without
5    * modification, are permitted provided that the following conditions are met:
6    *
7    * 1. Redistributions of source code must retain the above copyright notice,
8    *    this list of conditions and the following disclaimer.
9    * 2. Redistributions in binary form must reproduce the above copyright notice,
10   *    this list of conditions and the following disclaimer in the documentation
11   *    and/or other materials provided with the distribution.
12   * 3. The end-user documentation included with the redistribution, if any, must
13   *    include the following acknowledgment:
14   *
15   *       "This product includes software developed by Gargoyle Software Inc.
16   *        (http://www.GargoyleSoftware.com/)."
17   *
18   *    Alternately, this acknowledgment may appear in the software itself, if
19   *    and wherever such third-party acknowledgments normally appear.
20   * 4. The name "Gargoyle Software" must not be used to endorse or promote
21   *    products derived from this software without prior written permission.
22   *    For written permission, please contact info@GargoyleSoftware.com.
23   * 5. Products derived from this software may not be called "GSBase", nor may
24   *    "GSBase" appear in their name, without prior written permission of
25   *    Gargoyle Software Inc.
26   *
27   * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
28   * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
29   * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GARGOYLE
30   * SOFTWARE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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38  package com.gargoylesoftware.base.objectstore;
39  
40  import java.util.ArrayList;
41  import java.util.Collections;
42  import java.util.HashMap;
43  import java.util.List;
44  import java.util.Map;
45  import junit.framework.TestCase;
46  
47  /***
48   * Tests for DispatchingObjectStore
49   *
50   * @version  $Revision: 1.7 $
51   * @author <a href="mailto:mbowler@GargoyleSoftware.com">Mike Bowler</a>
52   */
53  public class DispatchingObjectStoreTest extends TestCase {
54  
55      private static class CommandA extends ObjectStoreCommand {
56  
57  		private static final long serialVersionUID = 1L;
58      }
59  
60  
61      /***
62       * A fake object store for testing purposes
63       */
64      public static class ObjectStoreA extends ObjectStore {
65          /*** Create one */
66          public ObjectStoreA() {}
67          private final List list_ = new ArrayList();
68          /***
69           * Execute the command
70           * @param command The command to execute
71           * @return The list
72           */
73          protected Object executeImpl( final ObjectStoreCommand command ) {
74              list_.add(command);
75              return list_;
76          }
77      }
78  
79  
80      /***
81       * Create an instance
82       * @param name The name of the test
83       */
84      public DispatchingObjectStoreTest( final String name ) {
85          super(name);
86      }
87  
88  
89      /***
90       * Test the dispatching logic
91       */
92      public void testDispatch() {
93  
94          final Map map = new HashMap(3);
95          map.put( CommandA.class, ObjectStoreA.class );
96  
97          final DispatchingObjectStore store
98              = new DispatchingObjectStore(map, Collections.EMPTY_MAP);
99          final ObjectStoreCommand command = new CommandA();
100 
101         final List list = (List)store.execute(command);
102 
103         assertEquals( "list.size", 1, list.size() );
104         assertSame( command, list.get(0) );
105     }
106 
107 
108     /***
109      * Try passing null into the constructor
110      */
111     public void testConstructor_Null() {
112         try {
113             new DispatchingObjectStore(null, Collections.EMPTY_MAP);
114             fail("Expected exception");
115         }
116         catch( final NullPointerException e ) {
117             // expected path
118         }
119     }
120 
121 
122     /***
123      * Try to dispatch a command for which we haven't defined a store.
124      */
125     public void testExecute_NotFound() {
126         final ObjectStore store
127             = new DispatchingObjectStore(new HashMap(3), Collections.EMPTY_MAP);
128         try {
129             store.execute( new CommandA() );
130             fail("Expected exception");
131         }
132         catch( ObjectStoreCommandNotSupportedException e ) {
133             // Expected path
134         }
135     }
136 
137 
138     /***
139      * Make sure that findStore() is being called
140      */
141     public void testFindStore() {
142 
143         final List list = new ArrayList();
144 
145         final DispatchingObjectStore store = new DispatchingObjectStore(Collections.EMPTY_MAP) {
146             protected ObjectStore findStore( final ObjectStoreCommand command ) {
147                 list.add(command);
148                 return new ObjectStoreA();
149             }
150         };
151         final ObjectStoreCommand command = new CommandA();
152 
153         store.execute(command);
154 
155         assertEquals( "list.size", 1, list.size() );
156         assertSame( command, list.get(0) );
157     }
158 }