/* * Copyright (c) 2002-2003 by OpenSymphony * All rights reserved. */package com.opensymphony.workflow;import com.opensymphony.workflow.loader.DTDEntityResolver;import com.opensymphony.workflow.loader.WorkflowDescriptor;import org.custommonkey.xmlunit.Diff;import org.custommonkey.xmlunit.ElementNameAndTextQualifier;import org.custommonkey.xmlunit.XMLTestCase;import org.w3c.dom.Document;import org.xml.sax.InputSource;import org.xml.sax.SAXException;import java.io.*;import java.net.URL;import javax.xml.parsers.DocumentBuilder;import javax.xml.parsers.DocumentBuilderFactory;import javax.xml.parsers.ParserConfigurationException;/** * Test that when you save a descriptor, it is identical to the original. * Identical means with the same xml syntax, not the exact same text wise. * * @author Hani Suleiman (hani@formicary.net) * @author Eric Pugh (epugh@upstate.com) * Date: May 5, 2003 * Time: 12:43:08 PM */public class SaveDescriptorTestCase extends XMLTestCase {    //~ Instance fields ////////////////////////////////////////////////////////    private DocumentBuilder documentBuilder;    //~ Constructors ///////////////////////////////////////////////////////////    public SaveDescriptorTestCase(String s) throws ParserConfigurationException {        super(s);        documentBuilder = DocumentBuilderFactory.newInstance().newDocumentBuilder();        documentBuilder.setEntityResolver(new DTDEntityResolver());    }    //~ Methods ////////////////////////////////////////////////////////////////    /**     *Test if a saved descriptor is identical to the original     */    public void testSave() throws Exception {        URL url = getClass().getResource("/samples/saved.xml");        Document inputDocument = documentBuilder.parse(url.toString());        WorkflowDescriptor descriptor = DescriptorLoader.getDescriptor(url.toString());        StringWriter out = new StringWriter();        PrintWriter writer = new PrintWriter(out);        writer.println(WorkflowDescriptor.XML_HEADER);        writer.println(WorkflowDescriptor.DOCTYPE_DECL);        descriptor.writeXML(new PrintWriter(out), 0);        //        PrintWriter blah = new PrintWriter(new FileWriter("foo.xml"));        //        descriptor.writeXML(blah, 0);        //        blah.flush();        Document outputDocument = getDocument(out.toString());        Diff diff = new Diff(inputDocument, outputDocument);        diff.overrideElementQualifier(new ElementNameAndTextQualifier());        assertTrue(diff.toString(), diff.similar());        assertXMLEqual("But they are equal when an ElementQualifier controls which test element is compared with each control element", diff, true);        assertTrue(diff.toString(), diff.similar());    }    private Document getDocument(String xml) throws IOException, SAXException {        InputSource source = new InputSource(new StringReader(xml));        return documentBuilder.parse(source);    }}