001 /* 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017 package org.apache.commons.configuration.tree; 018 019 import static org.junit.Assert.assertFalse; 020 import static org.junit.Assert.assertTrue; 021 022 import java.io.File; 023 024 import org.apache.commons.configuration.ConfigurationAssert; 025 import org.apache.commons.configuration.ConfigurationException; 026 import org.apache.commons.configuration.HierarchicalConfiguration; 027 import org.apache.commons.configuration.XMLConfiguration; 028 import org.junit.Before; 029 import org.junit.Test; 030 031 /** 032 * A base class for testing combiner implementations. This base class provides 033 * some functionality for loading the test configurations, which are to be 034 * combined. Concrete sub classes only need to create the correct combiner 035 * object. 036 * 037 * @version $Id: AbstractCombinerTest.java 1225911 2011-12-30 20:19:10Z oheger $ 038 */ 039 public abstract class AbstractCombinerTest 040 { 041 /** Constant for the first test configuration. */ 042 static File CONF1 = ConfigurationAssert.getTestFile("testcombine1.xml"); 043 044 /** Constant for the second test configuration. */ 045 static File CONF2 = ConfigurationAssert.getTestFile("testcombine2.xml"); 046 047 /** The combiner to be tested. */ 048 protected NodeCombiner combiner; 049 050 @Before 051 public void setUp() throws Exception 052 { 053 combiner = createCombiner(); 054 } 055 056 /** 057 * Creates the combiner to be tested. This method is called by 058 * <code>setUp()</code>. It must be implemented in concrete sub classes. 059 * 060 * @return the combiner to be tested 061 */ 062 protected abstract NodeCombiner createCombiner(); 063 064 /** 065 * Constructs a union configuration based on the source configurations. 066 * 067 * @return the union configuration 068 * @throws ConfigurationException if an error occurs 069 */ 070 protected HierarchicalConfiguration createCombinedConfiguration() 071 throws ConfigurationException 072 { 073 XMLConfiguration conf1 = new XMLConfiguration(CONF1); 074 XMLConfiguration conf2 = new XMLConfiguration(CONF2); 075 ConfigurationNode cn = combiner.combine(conf1.getRootNode(), conf2 076 .getRootNode()); 077 078 HierarchicalConfiguration result = new HierarchicalConfiguration(); 079 result.setRootNode(cn); 080 081 return result; 082 } 083 084 /** 085 * Tests a newly created combiner. 086 */ 087 @Test 088 public void testInit() 089 { 090 assertTrue("Combiner has list nodes", combiner.getListNodes().isEmpty()); 091 assertFalse("Node is list node", combiner 092 .isListNode(new DefaultConfigurationNode("test"))); 093 } 094 095 }