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Java > Open Source Codes > com > opensymphony > oscache > base > algorithm > TestFIFOCache


1 /*
2  * Copyright (c) 2002-2003 by OpenSymphony
3  * All rights reserved.
4  */
5 package com.opensymphony.oscache.base.algorithm;
6
7 import junit.framework.Test;
8 import junit.framework.TestSuite;
9
10 /**
11  * Test class for the FIFOCache class. It tests that the algorithm reacts as
12  * expected when entries are removed
13  *
14  * $Id: TestFIFOCache.java,v 1.1 2005/06/17 05:07:08 dres Exp $
15  * @version $Revision: 1.1 $
16  * @author <a HREF="mailto:abergevin@pyxis-tech.com">Alain Bergevin</a>
17  */
18 public final class TestFIFOCache extends TestQueueCache {
19     /**
20      * FIFO Cache object
21      */
22     private static FIFOCache cache = null;
23
24     /**
25      * Constructor
26      * <p>
27      * @param str The test name (required by JUnit)
28      */
29     public TestFIFOCache(String JavaDoc str) {
30         super(str);
31     }
32
33     /**
34      * This methods returns the name of this test class to JUnit
35      * <p>
36      * @return The test for this class
37      */
38     public static Test suite() {
39         return new TestSuite(TestFIFOCache.class);
40     }
41
42     /**
43      * Abstract method used by the TestAbstractCache class
44      * <p>
45      * @return A cache instance
46      */
47     public AbstractConcurrentReadCache getCache() {
48         return cache;
49     }
50
51     /**
52      * This method is invoked before each testXXXX methods of the
53      * class. It set ups the variables required for each tests.
54      */
55     public void setUp() {
56         // Create a cache instance on first invocation
57 if (cache == null) {
58             cache = new FIFOCache();
59             assertNotNull(cache);
60         }
61     }
62
63     /**
64      * Test the cache algorithm
65      */
66     public void testRemoveItem() {
67         // Add 2 elements in the cache and ensure that the one to remove is the first
68 // inserted
69 cache.itemPut(KEY);
70         cache.itemPut(KEY + 1);
71         assertTrue(KEY.equals(cache.removeItem()));
72     }
73 }
74
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