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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;
import java.io.File;
import java.io.IOException;
import org.apache.commons.bcel6.classfile.Attribute;
import org.apache.commons.bcel6.classfile.ConstantPool;
import org.apache.commons.bcel6.classfile.EnclosingMethod;
import org.apache.commons.bcel6.classfile.JavaClass;
import org.apache.commons.bcel6.util.SyntheticRepository;
import org.junit.Assert;
public class EnclosingMethodAttributeTestCase extends AbstractTestCase
{
/**
* Verify for an inner class declared inside the 'main' method that the
* enclosing method attribute is set correctly.
*/
public void testCheckMethodLevelNamedInnerClass()
throws ClassNotFoundException
{
JavaClass clazz = getTestClass(PACKAGE_BASE_NAME+".data.AttributeTestClassEM01$1S");
ConstantPool pool = clazz.getConstantPool();
Attribute[] encMethodAttrs = findAttribute("EnclosingMethod", clazz);
assertTrue("Expected 1 EnclosingMethod attribute but found "
+ encMethodAttrs.length, encMethodAttrs.length == 1);
EnclosingMethod em = (EnclosingMethod) encMethodAttrs[0];
String enclosingClassName = em.getEnclosingClass().getBytes(pool);
String enclosingMethodName = em.getEnclosingMethod().getName(pool);
assertTrue(
"Expected class name to be '"+PACKAGE_BASE_SIG+"/data/AttributeTestClassEM01' but was "
+ enclosingClassName, enclosingClassName
.equals(PACKAGE_BASE_SIG+"/data/AttributeTestClassEM01"));
assertTrue("Expected method name to be 'main' but was "
+ enclosingMethodName, enclosingMethodName.equals("main"));
}
/**
* Verify for an inner class declared at the type level that the
* EnclosingMethod attribute is set correctly (i.e. to a null value)
*/
public void testCheckClassLevelNamedInnerClass()
throws ClassNotFoundException
{
JavaClass clazz = getTestClass(PACKAGE_BASE_NAME+".data.AttributeTestClassEM02$1");
ConstantPool pool = clazz.getConstantPool();
Attribute[] encMethodAttrs = findAttribute("EnclosingMethod", clazz);
assertTrue("Expected 1 EnclosingMethod attribute but found "
+ encMethodAttrs.length, encMethodAttrs.length == 1);
EnclosingMethod em = (EnclosingMethod) encMethodAttrs[0];
String enclosingClassName = em.getEnclosingClass().getBytes(pool);
assertTrue(
"The class is not within a method, so method_index should be null, but it is "
+ em.getEnclosingMethodIndex(), em
.getEnclosingMethodIndex() == 0);
assertTrue(
"Expected class name to be '"+PACKAGE_BASE_SIG+"/data/AttributeTestClassEM02' but was "
+ enclosingClassName, enclosingClassName
.equals(PACKAGE_BASE_SIG+"/data/AttributeTestClassEM02"));
}
/**
* Check that we can save and load the attribute correctly.
*/
public void testAttributeSerializtion() throws ClassNotFoundException,
IOException
{
JavaClass clazz = getTestClass(PACKAGE_BASE_NAME+".data.AttributeTestClassEM02$1");
ConstantPool pool = clazz.getConstantPool();
Attribute[] encMethodAttrs = findAttribute("EnclosingMethod", clazz);
assertTrue("Expected 1 EnclosingMethod attribute but found "
+ encMethodAttrs.length, encMethodAttrs.length == 1);
// Write it out
File tfile = createTestdataFile("AttributeTestClassEM02$1.class");
clazz.dump(tfile);
// Read in the new version and check it is OK
SyntheticRepository repos2 = createRepos(".");
JavaClass clazz2 = repos2.loadClass("AttributeTestClassEM02$1");
Assert.assertNotNull(clazz2); // Use the variable to avoid a warning
EnclosingMethod em = (EnclosingMethod) encMethodAttrs[0];
String enclosingClassName = em.getEnclosingClass().getBytes(pool);
assertTrue(
"The class is not within a method, so method_index should be null, but it is "
+ em.getEnclosingMethodIndex(), em
.getEnclosingMethodIndex() == 0);
assertTrue(
"Expected class name to be '"+PACKAGE_BASE_SIG+"/data/AttributeTestClassEM02' but was "
+ enclosingClassName, enclosingClassName
.equals(PACKAGE_BASE_SIG+"/data/AttributeTestClassEM02"));
tfile.deleteOnExit();
}
}
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