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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.commons.bcel6.generic;
import java.util.Arrays;
import org.apache.commons.bcel6.Repository;
import org.apache.commons.bcel6.classfile.JavaClass;
import org.apache.commons.bcel6.classfile.Method;
import junit.framework.TestCase;
public class MethodGenTestCase extends TestCase {
public static class Foo {
public void bar() {
@SuppressWarnings("unused")
int a = 1;
}
}
private MethodGen getMethod(final Class<?> cls, final String name) throws ClassNotFoundException {
JavaClass jc = Repository.lookupClass(cls);
ConstantPoolGen cp = new ConstantPoolGen(jc.getConstantPool());
for (Method method : jc.getMethods()) {
if (method.getName().equals(name)) {
return new MethodGen(method, jc.getClassName(), cp);
}
}
fail("Method " + name + " not found in class " + cls);
return null;
}
public void testRemoveLocalVariable() throws Exception {
MethodGen mg = getMethod(Foo.class, "bar");
LocalVariableGen lv = mg.getLocalVariables()[1];
assertEquals("variable name", "a", lv.getName());
InstructionHandle start = lv.getStart();
InstructionHandle end = lv.getEnd();
assertNotNull("scope start", start);
assertNotNull("scope end", end);
assertTrue("scope start not targeted by the local variable", Arrays.asList(start.getTargeters()).contains(lv));
assertTrue("scope end not targeted by the local variable", Arrays.asList(end.getTargeters()).contains(lv));
// now let's remove the local variable
mg.removeLocalVariable(lv);
assertFalse("scope start still targeted by the removed variable", Arrays.asList(start.getTargeters()).contains(lv));
assertFalse("scope end still targeted by the removed variable", Arrays.asList(end.getTargeters()).contains(lv));
assertNull("scope start", lv.getStart());
assertNull("scope end", lv.getEnd());
}
public void testRemoveLocalVariables() throws Exception {
MethodGen mg = getMethod(Foo.class, "bar");
LocalVariableGen lv = mg.getLocalVariables()[1];
assertEquals("variable name", "a", lv.getName());
InstructionHandle start = lv.getStart();
InstructionHandle end = lv.getEnd();
assertNotNull("scope start", start);
assertNotNull("scope end", end);
assertTrue("scope start not targeted by the local variable", Arrays.asList(start.getTargeters()).contains(lv));
assertTrue("scope end not targeted by the local variable", Arrays.asList(end.getTargeters()).contains(lv));
// now let's remove the local variables
mg.removeLocalVariables();
assertFalse("scope start still targeted by the removed variable", Arrays.asList(start.getTargeters()).contains(lv));
assertFalse("scope end still targeted by the removed variable", Arrays.asList(end.getTargeters()).contains(lv));
assertNull("scope start", lv.getStart());
assertNull("scope end", lv.getEnd());
}
}
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