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/*
* Copyright (c) 2006, 2013, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
import java.beans.ExceptionListener;
import java.beans.XMLDecoder;
import java.beans.XMLEncoder;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.nio.charset.Charset;
import java.lang.reflect.Field;
abstract class AbstractTest<T> implements ExceptionListener {
final BeanValidator validator = new BeanValidator();
public final void exceptionThrown(Exception exception) {
throw new Error("unexpected exception", exception);
}
/**
* Returns an object to test.
* This object will be encoded and decoded
* and the object creation will be tested.
*
* @return an object to test
*/
protected abstract T getObject();
/**
* Returns a different object to test.
* If this object is not {@code null}
* it will be encoded and decoded
* and the object updating will be tested.
*
* @return a different object to test
*/
protected T getAnotherObject() {
return null;
}
/**
* This method should be overridden
* if specified encoder should be initialized.
*
* @param encoder the XML encoder to initialize
*/
protected void initialize(XMLEncoder encoder) {
}
/**
* This method should be overridden
* if specified decoder should be initialized.
*
* @param decoder the XML decoder to initialize
*/
protected void initialize(XMLDecoder decoder) {
}
/**
* This method should be overridden
* for test-specific comparison.
*
* @param before the object before encoding
* @param after the object after decoding
*/
protected void validate(T before, T after) {
this.validator.validate(before, after);
}
/**
* This is entry point to start testing.
*
* @param security use {@code true} to start
* second pass in secure context
*/
final void test(boolean security) {
Bean.DEFAULT = null;
T object = getObject();
System.out.println("Test object");
validate(object, testObject(object));
System.out.println("Test object creating");
validate(object, testBean(object));
Bean.DEFAULT = object;
object = getAnotherObject();
if (object != null) {
System.out.println("Test another object");
validate(object, testObject(object));
System.out.println("Test object updating");
validate(object, testBean(object));
}
if (security) {
System.setSecurityManager(new SecurityManager());
test(false);
}
}
private T testBean(T object) {
Bean bean = new Bean();
bean.setValue(object);
bean = testObject(bean);
return (T) bean.getValue();
}
private <Z> Z testObject(Z object) {
byte[] array = writeObject(object);
System.out.print(new String(array, Charset.forName("UTF-8")));
return (Z) readObject(array);
}
private byte[] writeObject(Object object) {
ByteArrayOutputStream output = new ByteArrayOutputStream();
XMLEncoder encoder = new XMLEncoder(output);
encoder.setExceptionListener(this);
initialize(encoder);
encoder.writeObject(object);
encoder.close();
return output.toByteArray();
}
private Object readObject(byte[] array) {
ByteArrayInputStream input = new ByteArrayInputStream(array);
XMLDecoder decoder = new XMLDecoder(input);
decoder.setExceptionListener(this);
initialize(decoder);
Object object = decoder.readObject();
decoder.close();
return object;
}
static Field getField(String name) {
try {
int index = name.lastIndexOf('.');
String className = name.substring(0, index);
String fieldName = name.substring(1 + index);
Field field = Class.forName(className).getDeclaredField(fieldName);
field.setAccessible(true);
return field;
}
catch (Exception exception) {
throw new Error(exception);
}
}
}
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