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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
* v1.0 which accompanies this distribution and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors: Andy Clement - initial implementation
******************************************************************************/
package org.aspectj.apache.bcel.classfile.tests;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.util.Collections;
import org.aspectj.apache.bcel.Constants;
import org.aspectj.apache.bcel.classfile.ConstantPool;
import org.aspectj.apache.bcel.classfile.annotation.AnnotationElementValue;
import org.aspectj.apache.bcel.classfile.annotation.AnnotationGen;
import org.aspectj.apache.bcel.classfile.annotation.ClassElementValue;
import org.aspectj.apache.bcel.classfile.annotation.ElementValue;
import org.aspectj.apache.bcel.classfile.annotation.EnumElementValue;
import org.aspectj.apache.bcel.classfile.annotation.NameValuePair;
import org.aspectj.apache.bcel.classfile.annotation.SimpleElementValue;
import org.aspectj.apache.bcel.generic.ClassGen;
import org.aspectj.apache.bcel.generic.ObjectType;
public class ElementValueGenTest extends BcelTestCase {
protected void setUp() throws Exception {
super.setUp();
}
private ClassGen createClassGen(String classname) {
return new ClassGen(classname, "java.lang.Object", "<generated>", Constants.ACC_PUBLIC | Constants.ACC_SUPER, null);
}
// //
// Create primitive element values
public void testCreateIntegerElementValue() {
ClassGen cg = createClassGen("HelloWorld");
ConstantPool cp = cg.getConstantPool();
SimpleElementValue evg = new SimpleElementValue(ElementValue.PRIMITIVE_INT, cp, 555);
// Creation of an element like that should leave a new entry in the cpool
assertTrue("Should have the same index in the constantpool but " + evg.getIndex() + "!=" + cp.lookupInteger(555),
evg.getIndex() == cp.lookupInteger(555));
checkSerialize(evg, cp);
}
public void testCreateFloatElementValue() {
ClassGen cg = createClassGen("HelloWorld");
ConstantPool cp = cg.getConstantPool();
SimpleElementValue evg = new SimpleElementValue(ElementValue.PRIMITIVE_FLOAT, cp, 111.222f);
// Creation of an element like that should leave a new entry in the cpool
assertTrue("Should have the same index in the constantpool but " + evg.getIndex() + "!=" + cp.lookupFloat(111.222f),
evg.getIndex() == cp.lookupFloat(111.222f));
checkSerialize(evg, cp);
}
public void testCreateDoubleElementValue() {
ClassGen cg = createClassGen("HelloWorld");
ConstantPool cp = cg.getConstantPool();
SimpleElementValue evg = new SimpleElementValue(ElementValue.PRIMITIVE_DOUBLE, cp, 333.44);
// Creation of an element like that should leave a new entry in the cpool
int idx = cp.lookupDouble(333.44);
assertTrue("Should have the same index in the constantpool but " + evg.getIndex() + "!=" + idx, evg.getIndex() == idx);
checkSerialize(evg, cp);
}
public void testCreateLongElementValue() {
ClassGen cg = createClassGen("HelloWorld");
ConstantPool cp = cg.getConstantPool();
SimpleElementValue evg = new SimpleElementValue(ElementValue.PRIMITIVE_LONG, cp, 3334455L);
// Creation of an element like that should leave a new entry in the cpool
int idx = cp.lookupLong(3334455L);
assertTrue("Should have the same index in the constantpool but " + evg.getIndex() + "!=" + idx, evg.getIndex() == idx);
checkSerialize(evg, cp);
}
public void testCreateCharElementValue() {
ClassGen cg = createClassGen("HelloWorld");
ConstantPool cp = cg.getConstantPool();
SimpleElementValue evg = new SimpleElementValue(ElementValue.PRIMITIVE_CHAR, cp, (char) 't');
// Creation of an element like that should leave a new entry in the cpool
int idx = cp.lookupInteger((char) 't');
assertTrue("Should have the same index in the constantpool but " + evg.getIndex() + "!=" + idx, evg.getIndex() == idx);
checkSerialize(evg, cp);
}
public void testCreateByteElementValue() {
ClassGen cg = createClassGen("HelloWorld");
ConstantPool cp = cg.getConstantPool();
SimpleElementValue evg = new SimpleElementValue(ElementValue.PRIMITIVE_CHAR, cp, (byte) 'z');
// Creation of an element like that should leave a new entry in the cpool
int idx = cp.lookupInteger((byte) 'z');
assertTrue("Should have the same index in the constantpool but " + evg.getIndex() + "!=" + idx, evg.getIndex() == idx);
checkSerialize(evg, cp);
}
public void testCreateBooleanElementValue() {
ClassGen cg = createClassGen("HelloWorld");
ConstantPool cp = cg.getConstantPool();
SimpleElementValue evg = new SimpleElementValue(ElementValue.PRIMITIVE_BOOLEAN, cp, true);
// Creation of an element like that should leave a new entry in the cpool
int idx = cp.lookupInteger(1); // 1 == true
assertTrue("Should have the same index in the constantpool but " + evg.getIndex() + "!=" + idx, evg.getIndex() == idx);
checkSerialize(evg, cp);
}
public void testCreateShortElementValue() {
ClassGen cg = createClassGen("HelloWorld");
ConstantPool cp = cg.getConstantPool();
SimpleElementValue evg = new SimpleElementValue(ElementValue.PRIMITIVE_SHORT, cp, (short) 42);
// Creation of an element like that should leave a new entry in the cpool
int idx = cp.lookupInteger(42);
assertTrue("Should have the same index in the constantpool but " + evg.getIndex() + "!=" + idx, evg.getIndex() == idx);
checkSerialize(evg, cp);
}
// //
// Create string element values
public void testCreateStringElementValue() {
// Create HelloWorld
ClassGen cg = createClassGen("HelloWorld");
ConstantPool cp = cg.getConstantPool();
SimpleElementValue evg = new SimpleElementValue(ElementValue.STRING, cp, "hello");
// Creation of an element like that should leave a new entry in the cpool
assertTrue("Should have the same index in the constantpool but " + evg.getIndex() + "!=" + cp.lookupUtf8("hello"),
evg.getIndex() == cp.lookupUtf8("hello"));
checkSerialize(evg, cp);
}
// //
// Create enum element value
public void testCreateEnumElementValue() {
ClassGen cg = createClassGen("HelloWorld");
ConstantPool cp = cg.getConstantPool();
ObjectType enumType = new ObjectType("SimpleEnum"); // Supports rainbow :)
EnumElementValue evg = new EnumElementValue(enumType, "Red", cp);
// Creation of an element like that should leave a new entry in the cpool
assertTrue("The new ElementValue value index should match the contents of the constantpool but " + evg.getValueIndex()
+ "!=" + cp.lookupUtf8("Red"), evg.getValueIndex() == cp.lookupUtf8("Red"));
// BCELBUG: Should the class signature or class name be in the constant pool? (see note in ConstantPool)
// assertTrue("The new ElementValue type index should match the contents of the constantpool but "+
// evg.getTypeIndex()+"!="+cp.lookupClass(enumType.getSignature()),
// evg.getTypeIndex()==cp.lookupClass(enumType.getSignature()));
checkSerialize(evg, cp);
}
public void testCreateMarkerAnnotationElementValue() {
ClassGen cg = createClassGen("HelloWorld");
ConstantPool cp = cg.getConstantPool();
ObjectType annoType = new ObjectType("SimpleMarkerAnnotation");
AnnotationGen annoGen = new AnnotationGen(annoType, Collections.<NameValuePair> emptyList(), true, cp);
AnnotationElementValue evg = new AnnotationElementValue(annoGen, cp);
checkSerialize(evg, cp);
}
// //
// Create class element value
public void testCreateClassElementValue() {
ClassGen cg = createClassGen("HelloWorld");
ConstantPool cp = cg.getConstantPool();
ObjectType classType = new ObjectType("java.lang.Integer");
ClassElementValue evg = new ClassElementValue(classType, cp);
assertTrue("Unexpected value for contained class: '" + evg.getClassString() + "'",
evg.getClassString().indexOf("Integer") != -1);
checkSerialize(evg, cp);
}
// //
// Helper methods
private void checkSerialize(ElementValue evgBefore, ConstantPool cpg) {
try {
String beforeValue = evgBefore.stringifyValue();
ByteArrayOutputStream baos = new ByteArrayOutputStream();
DataOutputStream dos = new DataOutputStream(baos);
evgBefore.dump(dos);
dos.flush();
dos.close();
byte[] bs = baos.toByteArray();
ByteArrayInputStream bais = new ByteArrayInputStream(bs);
DataInputStream dis = new DataInputStream(bais);
ElementValue evgAfter = ElementValue.readElementValue(dis, cpg);
dis.close();
String afterValue = evgAfter.stringifyValue();
if (!beforeValue.equals(afterValue)) {
fail("Deserialization failed: before='" + beforeValue + "' after='" + afterValue + "'");
}
} catch (IOException ioe) {
fail("Unexpected exception whilst checking serialization: " + ioe);
}
}
protected void tearDown() throws Exception {
super.tearDown();
}
}
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