Bean.java

package test;

import java.util.Objects;

public class Bean {

	public String value = "{default}";

	public String getValue() {
		return value;
	}

	public void setValue(String value) {
		this.value = value;
	}

	@Override
	public boolean equals(Object obj) {
		if (!(obj instanceof Bean))
			return false;
		return Objects.equals(value, ((Bean) obj).value);
	}
	
	@Override
	public String toString() {
		return String.valueOf(value);
	}

}

TestBeanConverter.java

package test;

import com.thoughtworks.xstream.XStream;
import com.thoughtworks.xstream.converters.javabean.JavaBeanConverter;
import com.thoughtworks.xstream.io.xml.DomDriver;

public class TestBeanConverter extends TestConverter {

	@Override
	public XStream createXStream() {
		XStream retVal = new XStream(new DomDriver());
		retVal.registerConverter(new JavaBeanConverter(retVal.getMapper()), -10);
		return retVal;
	}

}

TestConverter.java

package test;

import junit.framework.TestCase;

import org.junit.Test;

import com.thoughtworks.xstream.XStream;

public abstract class TestConverter extends TestCase {

	public abstract XStream createXStream();

	public void testBean(Bean bean) {
		XStream xstr = createXStream();
		String xml = xstr.toXML(bean);
		Bean bean2 = (Bean) xstr.fromXML(xml);
		assertEquals(bean, bean2);
	}

	@Test
	public void testDefaultValue() {
		Bean bean = new Bean();
		testBean(bean);
	}

	@Test
	public void testOtherValue() {
		Bean bean = new Bean();
		bean.setValue("other");
		testBean(bean);
	}

	@Test
	public void testEmptyValue() {
		Bean bean = new Bean();
		bean.setValue("");
		testBean(bean);
	}

	@Test
	public void testNullValue() {
		Bean bean = new Bean();
		bean.setValue(null);
		testBean(bean);
	}
}

TestReflectionConverter.java

package test;

import com.thoughtworks.xstream.XStream;
import com.thoughtworks.xstream.io.xml.DomDriver;

public class TestReflectionConverter extends TestConverter {

	@Override
	public XStream createXStream() {
		XStream retVal = new XStream(new DomDriver());
		return retVal;
	}

}