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/* *******************************************************************
* Copyright (c) 2004 IBM
* All rights reserved.
* This program and the accompanying materials are made available
* under the terms of the Eclipse Public License v 2.0
* which accompanies this distribution and is available at
* https://www.eclipse.org/org/documents/epl-2.0/EPL-2.0.txt
*
* Contributors:
* Andy Clement - initial implementation
* ******************************************************************/
package org.aspectj.apache.bcel.classfile.tests;
import java.io.File;
import java.io.IOException;
import org.aspectj.apache.bcel.classfile.Field;
import org.aspectj.apache.bcel.classfile.JavaClass;
import org.aspectj.apache.bcel.classfile.annotation.AnnotationGen;
import org.aspectj.apache.bcel.classfile.annotation.NameValuePair;
import org.aspectj.apache.bcel.generic.ClassGen;
import org.aspectj.apache.bcel.generic.FieldGen;
import org.aspectj.apache.bcel.util.SyntheticRepository;
public class FieldAnnotationsTest extends BcelTestCase {
protected void setUp() throws Exception {
super.setUp();
}
/**
* Check field annotations are retrievable.
*/
public void testFieldAnnotations() throws ClassNotFoundException {
JavaClass clazz = getClassFromJar("AnnotatedFields");
checkAnnotatedField(clazz,"i","SimpleAnnotation","id","1");
checkAnnotatedField(clazz,"s","SimpleAnnotation","id","2");
}
/**
* Check field annotations (de)serialize ok.
*/
public void testFieldAnnotationsReadWrite() throws ClassNotFoundException,IOException {
JavaClass clazz = getClassFromJar("AnnotatedFields");
checkAnnotatedField(clazz,"i","SimpleAnnotation","id","1");
checkAnnotatedField(clazz,"s","SimpleAnnotation","id","2");
// Write it out
File tfile = createTestdataFile("AnnotatedFields.class");
clazz.dump(tfile);
SyntheticRepository repos2 = createRepos(".");
JavaClass clazz2 = repos2.loadClass("AnnotatedFields");
checkAnnotatedField(clazz,"i","SimpleAnnotation","id","1");
checkAnnotatedField(clazz,"s","SimpleAnnotation","id","2");
assertTrue(tfile.delete());
}
/**
* Check we can load in a class, modify its field annotations, save it, reload it and
* everything is correct.
*/
public void testFieldAnnotationsModification() throws ClassNotFoundException, IOException {
boolean dbg = false;
JavaClass clazz = getClassFromJar("AnnotatedFields");
ClassGen clg = new ClassGen(clazz);
Field f = clg.getFields()[0];
if (dbg) System.err.println("Field in freshly constructed class is: "+f);
if (dbg) System.err.println("Annotations on field are: "+dumpAnnotations(f.getAnnotations()));
AnnotationGen fruitBasedAnnotation = createFruitAnnotation(clg.getConstantPool(),"Tomato",false);
FieldGen fg = new FieldGen(f,clg.getConstantPool());
if (dbg) System.err.println("Adding annotation to the field");
fg.addAnnotation(fruitBasedAnnotation);
if (dbg) System.err.println("FieldGen (mutable field) is "+fg);
if (dbg) System.err.println("with annotations: "+dumpAnnotations(fg.getAnnotations()));
if (dbg) System.err.println("Replacing original field with new field that has extra annotation");
clg.removeField(f);
clg.addField(fg.getField());
f = clg.getFields()[1]; // there are two fields in the class, removing and readding has changed the order
// so this time index [1] is the 'int i' field
if (dbg) System.err.println("Field now looks like this: "+f);
if (dbg) System.err.println("With annotations: "+dumpAnnotations(f.getAnnotations()));
assertTrue("Should be 2 annotations on this field, but there are "+f.getAnnotations().length,f.getAnnotations().length==2);
}
// helper methods
public void checkAnnotatedField(JavaClass clazz,String fieldname,
String annotationName,String annotationElementName,String annotationElementValue) {
Field[] fields = clazz.getFields();
for (Field f : fields) {
AnnotationGen[] fieldAnnotations = f.getAnnotations();
if (f.getName().equals(fieldname)) {
checkAnnotation(fieldAnnotations[0], annotationName, annotationElementName, annotationElementValue);
}
}
}
private void checkAnnotation(AnnotationGen a,String name,String elementname,String elementvalue) {
assertTrue("Expected annotation to have name "+name+" but it had name "+a.getTypeName(),
a.getTypeName().equals(name));
assertTrue("Expected annotation to have one element but it had "+a.getValues().size(),a.getValues().size()==1);
NameValuePair envp = a.getValues().get(0);
assertTrue("Expected element name "+elementname+" but was "+envp.getNameString(),
elementname.equals(envp.getNameString()));
assertTrue("Expected element value "+elementvalue+" but was "+envp.getValue().stringifyValue(),
elementvalue.equals(envp.getValue().stringifyValue()));
}
// helper methods
public void checkValue(AnnotationGen a,String name,String tostring) {
for (NameValuePair element : a.getValues()) {
if (element.getNameString().equals(name)) {
if (!element.getValue().stringifyValue().equals(tostring)) {
fail("Expected element " + name + " to have value " + tostring + " but it had value " + element.getValue().stringifyValue());
}
return;
}
}
fail("Didnt find named element "+name);
}
protected void tearDown() throws Exception {
super.tearDown();
}
}
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