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.interpol; 018 019 import static org.junit.Assert.assertEquals; 020 import static org.junit.Assert.assertNull; 021 022 import java.util.Iterator; 023 024 import org.apache.commons.configuration.EnvironmentConfiguration; 025 import org.junit.Before; 026 import org.junit.Test; 027 028 /** 029 * Test class for EnvironmentLookup. 030 * 031 * @author <a 032 * href="http://commons.apache.org/configuration/team-list.html">Commons 033 * Configuration team</a> 034 * @version $Id: TestEnvironmentLookup.java 1225658 2011-12-29 21:11:03Z oheger $ 035 */ 036 public class TestEnvironmentLookup 037 { 038 /** The lookup to be tested. */ 039 private EnvironmentLookup lookup; 040 041 @Before 042 public void setUp() throws Exception 043 { 044 lookup = new EnvironmentLookup(); 045 } 046 047 /** 048 * Tests whether environment variables can be queried. 049 */ 050 @Test 051 public void testLookup() 052 { 053 EnvironmentConfiguration envConf = new EnvironmentConfiguration(); 054 for (Iterator<String> it = envConf.getKeys(); it.hasNext();) 055 { 056 String var = it.next(); 057 assertEquals("Wrong value for " + var, envConf.getString(var), 058 lookup.lookup(var)); 059 } 060 } 061 062 /** 063 * Tries to lookup a non existing property. 064 */ 065 @Test 066 public void testLookupNonExisting() 067 { 068 assertNull("Got result for non existing environment variable", lookup 069 .lookup("a non existing variable!")); 070 } 071 }