org.apache.openjpa.eclipse.util.PCEnhancerHelperTest.java Source code

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Here is the source code for org.apache.openjpa.eclipse.util.PCEnhancerHelperTest.java

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/*
 * Copyright 2002-2009 the original author or authors.
 *
 * Licensed 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.openjpa.eclipse.util;

import java.io.File;
import java.net.URL;
import java.net.URLClassLoader;

import junit.framework.Assert;
import junit.framework.TestCase;

import org.apache.commons.io.FileUtils;
import org.apache.openjpa.enhance.PersistenceCapable;

/**
 * Test for PCEnhancerHelper implementations.
 *
 * @author Michael Vorburger
 */
public class PCEnhancerHelperTest extends TestCase {

    private final static File srcDir = new File("src/test/notonclasspath/");
    private final static File targetDir = new File("target/PCEnhancerHelperTest");
    private final static String classPackage = "org.apache.openjpa.eclipse.";

    public void todotestEnhanceFile() throws Exception {
        String className = "TestEntity";

        URL[] urls = new URL[] { targetDir.toURI().toURL() };
        ClassLoader classLoader = new URLClassLoader(urls);
        PCEnhancerHelper eh = new PCEnhancerHelperImpl(classLoader);
        boolean r = checkEnhance(eh, className);
        Assert.assertTrue(r); // was enhanced..

        // Reset/re-initialize classLoader, to freshly load and check the enhanced class
        classLoader = new URLClassLoader(urls);
        Class<?> testClass = classLoader.loadClass(classPackage + className);
        Assert.assertNotNull(testClass);
        Assert.assertEquals(1, testClass.getInterfaces().length);
        Assert.assertTrue(testClass.getInterfaces()[0].equals(PersistenceCapable.class));
    }

    public void testEnhancingAClassThatIsNotAnEntity() throws Exception {
        if (true)
            return;
        String className = "NotToEnhance";

        ClassLoader classLoader = new URLClassLoader(new URL[] { targetDir.toURI().toURL() });
        PCEnhancerHelper eh = new PCEnhancerHelperImpl(classLoader);
        boolean r = checkEnhance(eh, className);
        Assert.assertFalse(r); // NOT enhanced!
    }

    private boolean checkEnhance(PCEnhancerHelper eh, String classNameToCheck) throws Exception {
        String classFileName = classPackage.replace('.', '/') + classNameToCheck + ".class";

        FileUtils.forceMkdir(targetDir);
        FileUtils.cleanDirectory(targetDir);
        FileUtils.copyFileToDirectory(new File(srcDir, classFileName),
                new File(targetDir, classPackage.replace('.', '/')));
        File classFile = new File(targetDir, classFileName);
        assertTrue(classFile.exists());

        return eh.enhance(classFile);
    }
}