1   /*
2    * Copyright 2001-2004 The Apache Software Foundation.
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.apache.commons.configuration;
18  
19  import junit.framework.TestCase;
20  
21  /***
22   * Tests the StrintConfigurationComparator class
23   *
24   * @version $Revision$, $Date: 2005-02-26 13:56:39 +0100 (Sat, 26 Feb 2005) $
25   */
26  public class TestStrictConfigurationComparator extends TestCase
27  {
28      /***
29       * The comparator.
30       */
31      protected ConfigurationComparator comparator = new StrictConfigurationComparator();
32  
33      /***
34       * The first configuration.
35       */
36      protected Configuration configuration = new BaseConfiguration();
37  
38      /***
39       * Tests the comparator.
40       */
41      public void testCompare()
42      {
43          // Identity comparison for empty configuration
44          assertTrue(
45              "Compare an empty configuration with itself",
46              comparator.compare(configuration, configuration));
47  
48          configuration.setProperty("one", "1");
49          configuration.setProperty("two", "2");
50          configuration.setProperty("three", "3");
51  
52          // Identify comparison for non-empty configuration
53          assertTrue(
54              "Compare a configuration with itself",
55              comparator.compare(configuration, configuration));
56  
57          // Create the second configuration
58          Configuration other = new BaseConfiguration();
59          assertFalse(
60              "Compare a configuration with an empty one",
61              comparator.compare(configuration, other));
62  
63          other.setProperty("one", "1");
64          other.setProperty("two", "2");
65          other.setProperty("three", "3");
66  
67          // Two identical, non-empty configurations
68          assertTrue(
69              "Compare a configuration with an identical one",
70              comparator.compare(configuration, other));
71  
72          other.setProperty("four", "4");
73          assertFalse(
74              "Compare our configuration with another that has an additional key mapping",
75              comparator.compare(configuration, other));
76  
77          configuration.setProperty("four", "4");
78          assertTrue(
79              "Compare our configuration with another that is identical",
80              comparator.compare(configuration, other));
81      }
82  
83      public void testCompareNull()
84      {
85          assertTrue(comparator.compare(null, null));
86          assertFalse(comparator.compare(configuration, null));
87          assertFalse(comparator.compare(null, configuration));
88      }
89  }