/*
* 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.jci;
import java.io.File;
import org.apache.commons.jci.classes.ExtendedDump;
import org.apache.commons.jci.classes.SimpleDump;
import org.apache.commons.jci.listeners.ReloadingListener;
import org.apache.commons.jci.monitor.FilesystemAlterationMonitor;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
/**
*
* @author tcurdt
*/
public final class ReloadingClassLoaderTestCase extends AbstractTestCase {
private final Log log = LogFactory.getLog(ReloadingClassLoaderTestCase.class);
private ReloadingClassLoader classloader;
private ReloadingListener listener;
private FilesystemAlterationMonitor fam;
private final byte[] clazzSimple1;
private final byte[] clazzSimple2;
private final byte[] clazzExtended;
public ReloadingClassLoaderTestCase() throws Exception {
clazzSimple1 = SimpleDump.dump("Simple1");
clazzSimple2 = SimpleDump.dump("Simple2");
clazzExtended = ExtendedDump.dump();
assertTrue(clazzSimple1.length > 0);
assertTrue(clazzSimple2.length > 0);
assertTrue(clazzExtended.length > 0);
}
@Override
protected void setUp() throws Exception {
super.setUp();
classloader = new ReloadingClassLoader(this.getClass().getClassLoader());
listener = new ReloadingListener();
listener.addReloadNotificationListener(classloader);
fam = new FilesystemAlterationMonitor();
fam.addListener(directory, listener);
fam.start();
}
public void testCreate() throws Exception {
listener.waitForFirstCheck();
log.debug("creating class");
writeFile("jci/Simple.class", clazzSimple1);
listener.waitForCheck();
final Object simple = classloader.loadClass("jci.Simple").newInstance();
assertEquals("Simple1", simple.toString());
}
public void testChange() throws Exception {
listener.waitForFirstCheck();
log.debug("creating class");
writeFile("jci/Simple.class", clazzSimple1);
listener.waitForCheck();
final Object simple1 = classloader.loadClass("jci.Simple").newInstance();
assertEquals("Simple1", simple1.toString());
log.debug("changing class");
writeFile("jci/Simple.class", clazzSimple2);
listener.waitForEvent();
final Object simple2 = classloader.loadClass("jci.Simple").newInstance();
assertEquals("Simple2", simple2.toString());
}
public void testDelete() throws Exception {
listener.waitForFirstCheck();
log.debug("creating class");
writeFile("jci/Simple.class", clazzSimple1);
listener.waitForCheck();
final Object simple = classloader.loadClass("jci.Simple").newInstance();
assertEquals("Simple1", simple.toString());
log.debug("deleting class");
assertTrue(new File(directory, "jci/Simple.class").delete());
listener.waitForEvent();
try {
classloader.loadClass("jci.Simple").newInstance();
fail();
} catch(final ClassNotFoundException e) {
assertEquals("jci.Simple", e.getMessage());
}
}
public void testDeleteDependency() throws Exception {
listener.waitForFirstCheck();
log.debug("creating classes");
writeFile("jci/Simple.class", clazzSimple1);
writeFile("jci/Extended.class", clazzExtended);
listener.waitForCheck();
final Object simple = classloader.loadClass("jci.Simple").newInstance();
assertEquals("Simple1", simple.toString());
final Object extended = classloader.loadClass("jci.Extended").newInstance();
assertEquals("Extended:Simple1", extended.toString());
log.debug("deleting class dependency");
assertTrue(new File(directory, "jci/Simple.class").delete());
listener.waitForEvent();
try {
classloader.loadClass("jci.Extended").newInstance();
fail();
} catch(final NoClassDefFoundError e) {
assertEquals("jci/Simple", e.getMessage());
}
}
public void testClassNotFound() {
try {
classloader.loadClass("bla");
fail();
} catch(final ClassNotFoundException e) {
}
}
public void testDelegation() {
classloader.clearAssertionStatus();
classloader.setClassAssertionStatus("org.apache.commons.jci.ReloadingClassLoader", true);
classloader.setDefaultAssertionStatus(false);
classloader.setPackageAssertionStatus("org.apache.commons.jci", true);
// FIXME: compare with delegation
}
@Override
protected void tearDown() throws Exception {
fam.removeListener(listener);
fam.stop();
super.tearDown();
}
}