1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one or more
3    * contributor license agreements.  See the NOTICE file distributed with
4    * this work for additional information regarding copyright ownership.
5    * The ASF licenses this file to You under the Apache License, Version 2.0
6    * (the "License"); you may not use this file except in compliance with
7    * the License.  You may obtain a copy of the License at
8    *
9    *     http://www.apache.org/licenses/LICENSE-2.0
10   *
11   * Unless required by applicable law or agreed to in writing, software
12   * distributed under the License is distributed on an "AS IS" BASIS,
13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   * See the License for the specific language governing permissions and
15   * limitations under the License.
16   */
17  package org.apache.commons.configuration;
18  
19  import java.io.File;
20  
21  import junit.framework.Test;
22  import junit.framework.TestCase;
23  import junit.framework.TestSuite;
24  
25  import org.apache.commons.configuration.reloading.FileChangedReloadingStrategy;
26  import org.apache.commons.configuration.tree.xpath.XPathExpressionEngine;
27  
28  /***
29   * Unit test for simple MultiConfigurationTest.
30   */
31  public class TestPatternSubtreeConfiguration extends TestCase
32  {
33      private static String CONFIG_FILE = "target/test-classes/testPatternSubtreeConfig.xml";
34      private static String PATTERN = "BusinessClient[@name='${sys:Id}']";
35      private XMLConfiguration conf;
36  
37      /***
38       * Create the test case
39       *
40       * @param testName name of the test case
41       */
42      public TestPatternSubtreeConfiguration( String testName )
43      {
44          super( testName );
45      }
46  
47      /***
48       * @return the suite of tests being tested
49       */
50      public static Test suite() throws Exception
51      {
52          return new TestSuite(TestPatternSubtreeConfiguration.class );
53      }
54  
55      protected void setUp() throws Exception
56      {
57          conf = new XMLConfiguration();
58          conf.setFile(new File(CONFIG_FILE));
59          conf.load();
60      }
61  
62      /***
63       * Rigourous Test :-)
64       */
65      public void testMultiConfiguration()
66      {
67          //set up a reloading strategy
68          FileChangedReloadingStrategy strategy = new FileChangedReloadingStrategy();
69          strategy.setRefreshDelay(10000);
70  
71          PatternSubtreeConfigurationWrapper config = new PatternSubtreeConfigurationWrapper(this.conf, PATTERN);
72          config.setReloadingStrategy(strategy);
73          config.setExpressionEngine(new XPathExpressionEngine());
74  
75          System.setProperty("Id", "1001");
76          assertTrue(config.getInt("rowsPerPage") == 15);
77  
78          System.setProperty("Id", "1002");
79          assertTrue(config.getInt("rowsPerPage") == 25);
80  
81          System.setProperty("Id", "1003");
82          assertTrue(config.getInt("rowsPerPage") == 35);
83      }
84  }