CachingMapDecoratorTests


1   /*
2    * Copyright 2002-2005 the original author or authors.
3    *
4    * Licensed under the Apache License, Version 2.0 (the "License");
5    * you may not use this file except in compliance with the License.
6    * You may obtain a copy of the License at
7    *
8    *      http://www.apache.org/licenses/LICENSE-2.0
9    *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS,
12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13   * See the License for the specific language governing permissions and
14   * limitations under the License.
15   */
16  
17  package org.springframework.util;
18  
19  import junit.framework.TestCase;
20  
21  /**
22   * @author Keith Donald
23   */
24  public class CachingMapDecoratorTests extends TestCase {
25  
26      public void testValidCache() {
27          MyCachingMap cache = new MyCachingMap();
28          Object   value;
29  
30          value = cache.get("value key");
31          assertTrue(cache.createCalled());
32          assertEquals(value, "expensive value to cache");
33  
34          cache.get("value key 2");
35          assertTrue(cache.createCalled());
36  
37          value = cache.get("value key");
38          assertEquals(cache.createCalled(), false);
39          assertEquals(value, "expensive value to cache");
40  
41          cache.get("value key 2");
42          assertEquals(cache.createCalled(), false);
43          assertEquals(value, "expensive value to cache");
44      }
45  
46  
47      private static class MyCachingMap extends CachingMapDecorator {
48  
49          private boolean createCalled;
50  
51          protected Object   create(Object   key) {
52              createCalled = true;
53              return "expensive value to cache";
54          }
55  
56          public boolean createCalled() {
57              boolean c = createCalled;
58              this.createCalled = false;
59              return c;
60          }
61      }
62  
63  }
64
A to Z: JavaDoc & Examples Daily Java News & Articles Open Source Projects Open Source Codes Free Computer Books Remove Frame
Popular Tags