/*
* 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.discovery.test;
import static junit.framework.Assert.assertEquals;
import static junit.framework.Assert.assertNotNull;
import static junit.framework.Assert.assertTrue;
import static junit.framework.Assert.fail;
import static org.apache.commons.discovery.tools.SPInterface.newSPInterface;
import static org.apache.commons.discovery.tools.Service.providers;
import java.net.URL;
import java.util.Enumeration;
import java.util.Properties;
import org.apache.commons.discovery.Resource;
import org.apache.commons.discovery.ResourceClass;
import org.apache.commons.discovery.ResourceClassIterator;
import org.apache.commons.discovery.ResourceIterator;
import org.apache.commons.discovery.jdk.JDKHooks;
import org.apache.commons.discovery.resource.ClassLoaders;
import org.apache.commons.discovery.resource.DiscoverResources;
import org.apache.commons.discovery.resource.classes.DiscoverClasses;
import org.apache.commons.discovery.tools.DefaultClassHolder;
import org.apache.commons.discovery.tools.DiscoverClass;
import org.apache.commons.discovery.tools.DiscoverSingleton;
import org.apache.commons.discovery.tools.ManagedProperties;
import org.apache.commons.discovery.tools.PropertiesHolder;
import org.apache.commons.discovery.tools.SPInterface;
import org.apache.commons.logging.Log;
import org.junit.Test;
/**
* @version $Revision: 1090705 $
*/
public class TestAll {
@Test
public void findDefaultImpl_1() {
TestInterface1 ti = null;
try {
ti = DiscoverSingleton.find(TestInterface1.class, TestImpl1_1.class.getName());
assertTrue(ti.getClass().getName() + "!=" + TestImpl1_1.class.getName(),
ti.getClass().getName().equals(TestImpl1_1.class.getName()));
} finally {
DiscoverSingleton.release();
}
}
@Test
public void findDefaultImpl_2() {
TestInterface1 ti = null;
try {
ti = DiscoverSingleton.find(TestInterface1.class, TestImpl1_2.class.getName());
assertTrue(ti.getClass().getName() + "!=" + TestImpl1_2.class.getName(),
ti.getClass().getName().equals(TestImpl1_2.class.getName()));
} finally {
DiscoverSingleton.release();
}
}
@Test
public void cacheAssertions() {
TestInterface1 ti = null;
try {
ti = DiscoverSingleton.find(TestInterface1.class, TestImpl1_1.class.getName());
assertTrue("1. " + ti.getClass().getName() + "!=" + TestImpl1_1.class.getName(),
ti.getClass().getName().equals(TestImpl1_1.class.getName()));
// no release, should get cached value..
ti = DiscoverSingleton.find(TestInterface1.class, TestImpl1_2.class.getName());
// factory should be cached
assertTrue("2. " + ti.getClass().getName() + "!=" + TestImpl1_1.class.getName(),
ti.getClass().getName().equals(TestImpl1_1.class.getName()));
} finally {
DiscoverSingleton.release();
}
}
@Test
public void releaseAssertions() {
TestInterface1 ti = null;
try {
ti = DiscoverSingleton.find(TestInterface1.class, TestImpl1_1.class.getName());
assertTrue("1. " + ti.getClass().getName() + "!=" + TestImpl1_1.class.getName(),
ti.getClass().getName().equals(TestImpl1_1.class.getName()));
DiscoverSingleton.release();
ti = DiscoverSingleton.find(TestInterface1.class, TestImpl1_2.class.getName());
// factory should be cached
assertTrue("2. " + ti.getClass().getName() + "!=" + TestImpl1_2.class.getName(),
ti.getClass().getName().equals(TestImpl1_2.class.getName()));
} finally {
DiscoverSingleton.release();
}
}
@Test
public void findPropertyImpl_1() {
TestInterface1 ti = null;
try {
Properties props = new Properties();
props.setProperty(TestInterface1.class.getName(), TestImpl1_2.class.getName());
ti = DiscoverSingleton.find(TestInterface1.class, props);
assertTrue(ti.getClass().getName() + "!=" + TestImpl1_2.class.getName(),
ti.getClass().getName().equals(TestImpl1_2.class.getName()));
} finally {
DiscoverSingleton.release();
}
}
@Test
public void myFactoryManagedProperty() {
TestInterface1 ti = null;
try {
ManagedProperties.setProperty(TestInterface1.class.getName(), TestImpl1_2.class.getName());
ti = DiscoverSingleton.find(TestInterface1.class);
assertTrue(ti.getClass().getName() + "!=" + TestImpl1_2.class.getName(),
ti.getClass().getName().equals(TestImpl1_2.class.getName()));
} finally {
DiscoverSingleton.release();
/*
* Cleanup, don't want to affect next test..
*/
ManagedProperties.setProperty(TestInterface1.class.getName(), null);
}
}
@Test
public void findPropFileDefault() {
TestInterface1 ti = null;
try {
ti = DiscoverSingleton.find(null,
new SPInterface<TestInterface1>(TestInterface1.class),
new PropertiesHolder("TestInterface.properties"),
new DefaultClassHolder<TestInterface1>(TestImpl1_2.class.getName()));
assertTrue(ti.getClass().getName() + "!=" + TestImpl1_1.class.getName(),
ti.getClass().getName().equals(TestImpl1_1.class.getName()));
} finally {
DiscoverSingleton.release();
}
}
@Test
public void findServiceFileDefault() {
TestInterface2 ti = null;
try {
ti = DiscoverSingleton.find(null,
new SPInterface<TestInterface2>(TestInterface2.class),
null,
new DefaultClassHolder<TestInterface2>(TestImpl2_2.class.getName()));
assertTrue(ti.getClass().getName() + "!=" + TestImpl2_1.class.getName(),
ti.getClass().getName().equals(TestImpl2_1.class.getName()));
} finally {
DiscoverSingleton.release();
}
}
@Test
public void lowLevelFind() {
ClassLoaders loaders = ClassLoaders.getAppLoaders(TestInterface2.class, getClass(), false);
String name = "org.apache.commons.discovery.test.TestImpl2_1";
DiscoverClasses<TestInterface2> discovery = new DiscoverClasses<TestInterface2>(loaders);
ResourceClassIterator<TestInterface2> iter = discovery.findResourceClasses(name);
while (iter.hasNext()) {
ResourceClass<TestInterface2> resource = iter.nextResourceClass();
try {
Class<? extends TestInterface2> implClass = resource.loadClass();
if ( implClass != null ) {
assertEquals("org.apache.commons.discovery.test.TestImpl2_1", implClass.getName());
return;
}
} catch (Exception e) {
fail("Could not load service: " + resource );
}
}
fail("failed to load class resource: " + name);
}
@Test
public void findResources() {
ClassLoaders loaders = new ClassLoaders();
/*
* To many class loaders when searching for multiple
* resources means that we can find the same (same URL)
* resource for each loader...
* let's keep this to a minimum.
*/
ClassLoader cl = getClass().getClassLoader();
if (cl != null) {
loaders.put(getClass().getClassLoader(), true);
} else {
loaders.put(JDKHooks.getJDKHooks().getSystemClassLoader(), true);
}
String name = "testResource";
String partialPaths[] = { "/test-classes/", "/testAlt1/", "/testAlt2/" };
int expected = partialPaths.length;
DiscoverResources discovery = new DiscoverResources(loaders);
ResourceIterator iter = discovery.findResources(name);
int count = 0;
while (iter.hasNext()) {
Resource resource = iter.nextResource();
URL url = resource.getResource();
if (url != null) {
if (url.getFile().indexOf(partialPaths[count]) == -1) {
fail(url + " does not contain " + partialPaths[count]);
}
count++;
}
}
if (count != expected) {
fail("located " + count + " resources, failed to locate all " + expected + " resources: " + name);
}
}
@Test
public void findViaDiscoverClass() {
ClassLoaders loaders = ClassLoaders.getAppLoaders(TestInterface2.class, getClass(), false);
DiscoverClass discover = new DiscoverClass(loaders);
Class<? extends TestInterface2> implClass = discover.find(TestInterface2.class);
assertTrue("Failed to find an implementation class", implClass != null);
assertEquals("org.apache.commons.discovery.test.TestImpl2_1", implClass.getName());
}
@Test
public void findInnerImplViaDiscoverClass() {
ClassLoaders loaders = ClassLoaders.getAppLoaders(TestInterface3.class, getClass(), false);
DiscoverClass discover = new DiscoverClass(loaders);
Class<? extends TestInterface3> implClass = discover.find(TestInterface3.class);
assertTrue("Failed to find an implementation class", implClass != null);
assertEquals("org.apache.commons.discovery.test.TestImpl3$InnerTestImpl", implClass.getName());
}
@Test
public void instantiateViaDiscoverClass() throws Exception {
ClassLoaders loaders = ClassLoaders.getAppLoaders(TestInterface2.class, getClass(), false);
DiscoverClass discoverClass = new DiscoverClass(loaders);
TestInterface2 serviceImpl = discoverClass.newInstance(TestInterface2.class);
assertNotNull(serviceImpl);
assertEquals(TestImpl2_1.class, serviceImpl.getClass());
}
@Test
public void findImplementationsViaService() {
final int expectedLogImplementations = 2;
int actualLogImplementations = 0;
Enumeration<? extends Log> logImplementations = providers(newSPInterface(Log.class,
new Class<?>[]{ String.class },
new Object[]{ getClass().getName() }),
null);
while (logImplementations.hasMoreElements()) {
Log log = logImplementations.nextElement();
assertNotNull(log);
actualLogImplementations++;
}
assertEquals(expectedLogImplementations, actualLogImplementations);
}
}