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/**
*
* 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.tuscany.sdo.test.osgi;
import java.io.File;
import java.io.IOException;
import java.lang.reflect.Method;
import java.net.URL;
import java.net.URLClassLoader;
import java.util.HashSet;
import org.apache.tuscany.sdo.test.AllTests;
import commonj.sdo.impl.HelperProvider;
import junit.framework.Assert;
import junit.framework.TestCase;
import junit.framework.TestResult;
import junit.framework.TestSuite;
/*
* This test runs the SDO implementation test suite in a multi-classloader environment
*/
public class ClassLoaderTestCase extends TestCase {
private ClassLoader contextClassLoader;
protected void setUp() throws Exception {
contextClassLoader = Thread.currentThread().getContextClassLoader();
super.setUp();
}
protected void tearDown() throws Exception {
super.tearDown();
Thread.currentThread().setContextClassLoader(contextClassLoader);
}
// Load the test class using a separate test classloader which
// loads SDO API, LIB and IMPL using different classloaders
// Run the SDO test suite under this multi-classloader environment
// Third party libraries and test classes/resources are available
// on the thread context classloader when this test is run
public void test() throws Exception {
ClassLoader testClassLoader = createTestClassLoader();
Class testClass = testClassLoader.loadClass(this.getClass().getName());
Method testMethod = testClass.getMethod("runSDOTest", null);
Object testObj = testClass.newInstance();
testMethod.invoke(testObj, null);
}
public void runSDOTest() throws Exception {
HelperProvider.setDefaultInstance(this.getClass().getClassLoader());
TestSuite allTests = AllTests.suite();
TestResult testResult = new TestResult();
allTests.run(testResult);
Assert.assertEquals(0, testResult.errorCount());
}
// Get all the URLs for a classloader, remove these from dependentJars
private URL[] getClassLoaderURLs(
URL[] classPathEntries,
HashSet dependentJars,
String[] jarList)
throws IOException {
String pathSeparator = "/";
HashSet classPathEntrySet;
classPathEntrySet = new HashSet();
for (int i = 0; i < classPathEntries.length; i++) {
URL classPathEntry = classPathEntries[i];
String classPathEntryStr = classPathEntry.getPath();
if (jarList != null) {
for (int k = 0; k < jarList.length; k++) {
String jarName = "tuscany-" + jarList[k];
String alternateJarName = "tuscany-sdo-" + jarList[k];
String folderName = pathSeparator + jarList[k] + pathSeparator;
if (classPathEntryStr.indexOf(jarName) >= 0 ||
classPathEntryStr.indexOf(alternateJarName) >=0 ||
classPathEntryStr.indexOf(folderName) >=0) {
classPathEntrySet.add(classPathEntry);
dependentJars.remove(classPathEntry);
}
}
}
}
return (URL [])classPathEntrySet.toArray(new URL[classPathEntrySet.size()]);
}
// Create the test classloader. It uses separate classloaders to load SDO API, SDO LIB,
// SDO IMPL and 3rd part libraries
private ClassLoader createTestClassLoader() throws Exception {
String[] sdoApiJars = {"sdo-api"};
String[] sdoLibJars = {"lib"};
String[] sdoImplJars = {"impl"};
URL[] sdoApiUrls;
URL[] sdoLibUrls;
URL[] sdoImplUrls;
URL[] dependencyUrls;
if (!(this.getClass().getClassLoader() instanceof URLClassLoader))
return this.getClass().getClassLoader();
HashSet dependentJars = new HashSet();
URL[] classPathEntries = ((URLClassLoader)this.getClass().getClassLoader()).getURLs();
for (int i = 0; i < classPathEntries.length; i++) {
dependentJars.add(classPathEntries[i]);
}
sdoApiUrls = getClassLoaderURLs(classPathEntries, dependentJars, sdoApiJars);
sdoLibUrls = getClassLoaderURLs(classPathEntries, dependentJars, sdoLibJars);
sdoImplUrls = getClassLoaderURLs(classPathEntries, dependentJars, sdoImplJars);
dependencyUrls = (URL [])dependentJars.toArray(new URL[dependentJars.size()]);
ClassLoader dependencyLoader = new URLClassLoader(dependencyUrls, null);
ClassLoader sdoApiLoader = new URLClassLoader(sdoApiUrls, dependencyLoader);
ClassLoader sdoLibClassLoader = new URLClassLoader(sdoLibUrls, sdoApiLoader);
ClassLoader sdoImplClassLoader = new URLClassLoader(sdoImplUrls, sdoLibClassLoader);
TestClassLoader testClassLoader = new TestClassLoader(
new ClassLoader[] {sdoApiLoader, sdoLibClassLoader, sdoImplClassLoader, dependencyLoader}
);
// Test classes and 3rd party libraries should be on the context classloader
URL testUrl = new File("./target/test-classes").toURL();
ClassLoader contextClassLoader = new URLClassLoader(new URL[]{testUrl}, dependencyLoader);
Thread.currentThread().setContextClassLoader(contextClassLoader);
return testClassLoader;
}
private class TestClassLoader extends ClassLoader {
ClassLoader[] parentLoaders;
private TestClassLoader(ClassLoader[] parentLoaders) {
this.parentLoaders = parentLoaders;
}
public Class loadClass(String className) throws ClassNotFoundException {
Class clazz = findLoadedClass(className);
if (clazz != null)
return clazz;
for (int i = 0; i < parentLoaders.length; i++) {
try {
return parentLoaders[i].loadClass(className);
} catch (Exception e) {
// speculative load using parent class loader failed, but that's OK
}
}
return super.loadClass(className);
}
}
}
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