| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.commons.configuration2; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertNull; |
| |
| import java.util.Collection; |
| import java.util.Iterator; |
| |
| import org.junit.Test; |
| |
| /** |
| * Test class for {@code ConfigurationLookup}. |
| * |
| * @version $Id$ |
| */ |
| public class TestConfigurationLookup |
| { |
| /** Constant for a test variable name. */ |
| private static final String VAR = "testVariable"; |
| |
| /** Constant for the value of the test variable. */ |
| private static final Object VALUE = "SomeTestValue"; |
| |
| /** |
| * Tries to create an instance without a configuration. |
| */ |
| @Test(expected = IllegalArgumentException.class) |
| public void testInitNoConfig() |
| { |
| new ConfigurationLookup(null); |
| } |
| |
| /** |
| * Tests whether an existing variable can be resolved. |
| */ |
| @Test |
| public void testLookupSuccess() |
| { |
| Configuration conf = new BaseConfiguration(); |
| conf.addProperty(VAR, VALUE); |
| ConfigurationLookup lookup = new ConfigurationLookup(conf); |
| assertEquals("Wrong result", VALUE, lookup.lookup(VAR)); |
| } |
| |
| /** |
| * Tests lookup() if the variable cannot be resolved. |
| */ |
| @Test |
| public void testLookupNotFound() |
| { |
| Configuration conf = new BaseConfiguration(); |
| ConfigurationLookup lookup = new ConfigurationLookup(conf); |
| assertNull("Got a value", lookup.lookup(VAR)); |
| } |
| |
| /** |
| * Tests lookup() if the variable cannot be resolved, and the configuration |
| * throws an exception. |
| */ |
| @Test |
| public void testLookupNotFoundEx() |
| { |
| BaseConfiguration conf = new BaseConfiguration(); |
| conf.setThrowExceptionOnMissing(true); |
| ConfigurationLookup lookup = new ConfigurationLookup(conf); |
| assertNull("Got a value", lookup.lookup(VAR)); |
| } |
| |
| /** |
| * Tests lookup() for a complex property value. |
| */ |
| @Test |
| public void testLookupComplex() |
| { |
| final int count = 5; |
| Configuration conf = new BaseConfiguration(); |
| for (int i = 0; i < count; i++) |
| { |
| conf.addProperty(VAR, String.valueOf(VALUE) + i); |
| } |
| ConfigurationLookup lookup = new ConfigurationLookup(conf); |
| Collection<?> col = (Collection<?>) lookup.lookup(VAR); |
| assertEquals("Wrong number of elements", count, col.size()); |
| Iterator<?> it = col.iterator(); |
| for (int i = 0; i < count; i++) |
| { |
| assertEquals("Wrong element at " + i, String.valueOf(VALUE) + i, |
| it.next()); |
| } |
| } |
| } |