/*
* 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.configuration.reloading;
import java.io.File;
import java.io.FileWriter;
import java.net.URL;
import junit.framework.TestCase;
import org.apache.commons.configuration.PropertiesConfiguration;
import org.apache.commons.configuration.XMLConfiguration;
/**
* Test case for the ReloadableConfiguration class.
*
* @author Emmanuel Bourg
* @version $Revision: 439648 $, $Date: 2006-09-02 22:42:10 +0200 (Sa, 02 Sep 2006) $
*/
public class TestFileChangedReloadingStrategy extends TestCase
{
public void testAutomaticReloading() throws Exception
{
// create a new configuration
File file = new File("target/testReload.properties");
if (file.exists())
{
file.delete();
}
// create the configuration file
FileWriter out = new FileWriter(file);
out.write("string=value1");
out.flush();
out.close();
// load the configuration
PropertiesConfiguration config = new PropertiesConfiguration("target/testReload.properties");
FileChangedReloadingStrategy strategy = new FileChangedReloadingStrategy();
strategy.setRefreshDelay(500);
config.setReloadingStrategy(strategy);
assertEquals("Initial value", "value1", config.getString("string"));
Thread.sleep(2000);
// change the file
out = new FileWriter(file);
out.write("string=value2");
out.flush();
out.close();
// test the automatic reloading
assertEquals("Modified value with enabled reloading", "value2", config.getString("string"));
}
public void testNewFileReloading() throws Exception
{
// create a new configuration
File file = new File("target/testReload.properties");
if (file.exists())
{
file.delete();
}
PropertiesConfiguration config = new PropertiesConfiguration();
config.setFile(file);
FileChangedReloadingStrategy strategy = new FileChangedReloadingStrategy();
strategy.setRefreshDelay(500);
config.setReloadingStrategy(strategy);
assertNull("Initial value", config.getString("string"));
// change the file
FileWriter out = new FileWriter(file);
out.write("string=value1");
out.flush();
out.close();
Thread.sleep(2000);
// test the automatic reloading
assertEquals("Modified value with enabled reloading", "value1", config.getString("string"));
}
public void testGetRefreshDelay()
{
FileChangedReloadingStrategy strategy = new FileChangedReloadingStrategy();
strategy.setRefreshDelay(500);
assertEquals("refresh delay", 500, strategy.getRefreshDelay());
}
/**
* Tests if a file from the classpath can be monitored.
*/
public void testFromClassPath() throws Exception
{
PropertiesConfiguration config = new PropertiesConfiguration();
config.setFileName("test.properties");
config.load();
assertTrue(config.getBoolean("configuration.loaded"));
FileChangedReloadingStrategy strategy = new FileChangedReloadingStrategy();
config.setReloadingStrategy(strategy);
assertEquals(config.getURL(), strategy.getFile().toURL());
}
/**
* Tests to watch a configuration file in a jar. In this case the jar file
* itself should be monitored.
*/
public void testFromJar() throws Exception
{
XMLConfiguration config = new XMLConfiguration();
// use some jar: URL
config.setURL(new URL("jar:" + new File("conf/resources.jar").getAbsoluteFile().toURL() + "!/test-jar.xml"));
FileChangedReloadingStrategy strategy = new FileChangedReloadingStrategy();
config.setReloadingStrategy(strategy);
File file = strategy.getFile();
assertNotNull("Strategy's file is null", file);
assertEquals("Strategy does not monitor the jar file", "resources.jar", file.getName());
}
}