| /* |
| * 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.tools.ant; |
| |
| import java.io.File; |
| import java.io.IOException; |
| import java.net.URL; |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.Collections; |
| import java.util.Enumeration; |
| import java.util.List; |
| import junit.framework.TestCase; |
| import org.apache.tools.ant.Project; |
| import org.apache.tools.ant.types.Path; |
| import org.apache.tools.ant.util.FileUtils; |
| |
| /** |
| * Test case for ant class loader |
| * |
| */ |
| public class AntClassLoaderDelegationTest extends TestCase { |
| |
| /** Instance of a utility class to use for file operations. */ |
| private static final FileUtils FILE_UTILS = FileUtils.getFileUtils(); |
| |
| private Project p; |
| |
| public AntClassLoaderDelegationTest(String name) { |
| super(name); |
| } |
| |
| public void setUp() { |
| p = new Project(); |
| p.init(); |
| } |
| |
| /** Sample resource present in build/testcases/ */ |
| private static final String TEST_RESOURCE |
| = "apache/tools/ant/IncludeTest.class"; |
| |
| public void testFindResources() throws Exception { |
| // This path should contain the class files for these testcases: |
| String buildTestcases = System.getProperty("build.tests"); |
| assertNotNull("defined ${build.tests}", buildTestcases); |
| assertTrue("have a dir " + buildTestcases, |
| new File(buildTestcases).isDirectory()); |
| Path path = new Path(p, buildTestcases + "/org"); |
| // A special parent loader which is not the system class loader: |
| ClassLoader parent = new ParentLoader(); |
| // An AntClassLoader which is supposed to delegate to |
| // the parent and then to the disk path: |
| ClassLoader acl = new AntClassLoader(parent, p, path, true); |
| // The intended result URLs: |
| URL urlFromPath = new URL( |
| FILE_UTILS.toURI(buildTestcases) + "org/" + TEST_RESOURCE); |
| URL urlFromParent = new URL("http://ant.apache.org/" + TEST_RESOURCE); |
| assertEquals("correct resources (regular delegation order)", |
| Arrays.asList(new URL[] {urlFromParent, urlFromPath}), |
| enum2List(acl.getResources(TEST_RESOURCE))); |
| acl = new AntClassLoader(parent, p, path, false); |
| assertEquals("correct resources (reverse delegation order)", |
| Arrays.asList(new URL[] {urlFromPath, urlFromParent}), |
| enum2List(acl.getResources(TEST_RESOURCE))); |
| } |
| |
| public void testFindIsolateResources() throws Exception { |
| String buildTestcases = System.getProperty("build.tests"); |
| assertNotNull("defined ${build.tests}", buildTestcases); |
| assertTrue("have a dir " + buildTestcases, |
| new File(buildTestcases).isDirectory()); |
| Path path = new Path(p, buildTestcases + "/org"); |
| // A special parent loader which is not the system class loader: |
| ClassLoader parent = new ParentLoader(); |
| |
| URL urlFromPath = new URL( |
| FILE_UTILS.toURI(buildTestcases) + "org/" + TEST_RESOURCE); |
| AntClassLoader acl = new AntClassLoader(parent, p, path, false); |
| acl.setIsolated(true); |
| assertEquals("correct resources (reverse delegation order)", |
| Arrays.asList(new URL[] {urlFromPath}), |
| enum2List(acl.getResources(TEST_RESOURCE))); |
| } |
| |
| private static List enum2List(Enumeration e) { |
| // JDK 1.4: return Collections.list(e); |
| List l = new ArrayList(); |
| while (e.hasMoreElements()) { |
| l.add(e.nextElement()); |
| } |
| return l; |
| } |
| |
| /** Special loader that just knows how to find TEST_RESOURCE. */ |
| private static final class ParentLoader extends ClassLoader { |
| |
| public ParentLoader() {} |
| |
| protected Enumeration findResources(String name) throws IOException { |
| if (name.equals(TEST_RESOURCE)) { |
| return Collections.enumeration( |
| Collections.singleton( |
| new URL("http://ant.apache.org/" + name))); |
| } else { |
| return Collections.enumeration(Collections.EMPTY_SET); |
| } |
| } |
| |
| } |
| |
| } |