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/**
* Copyright 2012-2014 Julien Eluard and contributors
* This project includes software developed by Julien Eluard: https://github.com/jeluard/
*
* 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.semver.jardiff;
import java.util.HashMap;
import java.util.Map;
import junit.framework.Assert;
import org.junit.Test;
import org.objectweb.asm.ClassReader;
import org.osjava.jardiff.ClassInfo;
import org.osjava.jardiff.JarDiff;
import org.osjava.jardiff.SimpleDiffCriteria;
import org.semver.Delta;
import org.semver.Dumper;
import org.semver.Delta.Change;
public class ClassInheritanceTest {
public static abstract class InheritanceRoot {
public abstract void aMethod();
}
public static class DirectDescendant extends InheritanceRoot {
@Override
public void aMethod() {}
}
public static class ClassA extends InheritanceRoot {
@Override
public void aMethod() {}
}
public static class ClassB extends DirectDescendant {
}
@Test
public void shouldInheritedMethodMatchImplementedMethod() throws Exception {
/**
* The situation we are testing is as follows:
* Abstract class InheritanceRoot is initially implemented directly by ClassA.
* ClassA is later modified to extend another implementation of InheritanceRoot
* and the methods required by InheritanceRoot are now removed from ClassA directly,
* and instead inherited from the new parent, DirectDescendant. For the purposes of
* this test, this new ClassA is represented by ClassB (as we can't have the same
* class declared twice in a test -- in real life, this would both be ClassA's,
* in different jars).
*/
final Map<String, ClassInfo> oldClassInfoMap = new HashMap<String, ClassInfo>();
final Map<String, ClassInfo> newClassInfoMap = new HashMap<String, ClassInfo>();
final JarDiff jd = new JarDiff();
addClassInfo(oldClassInfoMap, ClassA.class, jd);
addClassInfo(oldClassInfoMap, DirectDescendant.class, jd);
addClassInfo(oldClassInfoMap, InheritanceRoot.class, jd);
addClassInfo(newClassInfoMap, ClassB.class, jd);
addClassInfo(newClassInfoMap, DirectDescendant.class, jd);
addClassInfo(newClassInfoMap, InheritanceRoot.class, jd);
// Make B look like A
final ClassInfo a = oldClassInfoMap.get("org/semver/jardiff/ClassInheritanceTest$ClassA");
final ClassInfo b = newClassInfoMap.get("org/semver/jardiff/ClassInheritanceTest$ClassB");
newClassInfoMap.put(a.getName(), new ClassInfo(b.getVersion(), b.getAccess(), a.getName(),
b.getSignature(), b.getSupername(), b.getInterfaces(),
b.getMethodMap(), b.getFieldMap()));
newClassInfoMap.remove(b.getName());
final DifferenceAccumulatingHandler handler = new DifferenceAccumulatingHandler();
jd.diff(handler, new SimpleDiffCriteria(true),
"0.1.0", "0.2.0", oldClassInfoMap, newClassInfoMap);
Dumper.dumpFullStats(handler.getDelta(), 4, System.out);
for (final Delta.Difference d: handler.getDelta().getDifferences()) {
System.err.println(d.getClassName() + " : " + d.getClass().getName()
+ " : " + d.getInfo().getName() + " : " + d.getInfo().getAccessType());
if (d instanceof Change) {
System.err.println(" : " + ((Change) d).getModifiedInfo().getName());
}
}
Assert.assertEquals("differences found", 1, handler.getDelta().getDifferences().size());
}
private void addClassInfo(final Map<String, ClassInfo> classMap, final Class klass, final JarDiff jd) throws Exception {
final ClassInfo classInfo = jd.loadClassInfo(new ClassReader(klass.getName()));
classMap.put(classInfo.getName(), classInfo);
}
}
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