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package net.sourceforge.cruisecontrol.util;

import java.io.StringReader;
import java.io.StringWriter;
import java.io.Writer;

import org.jdom.Document;
import org.jdom.input.SAXBuilder;
import org.jdom.output.XMLOutputter;

import junit.framework.TestCase;

/**
 * @author <a href="mailto:joriskuipers@xs4all.nl">Joris Kuipers</a>
 *
 */
public class PruneElementFilterTest extends TestCase {

    private SAXBuilder builder;

    protected void setUp() throws Exception {
        builder = new SAXBuilder("org.apache.xerces.parsers.SAXParser");
        builder.setXMLFilter(new PruneElementFilter("properties"));
    }

    public void testFiltering() throws Exception {
        String xml = "<?xml version=\"1.0\" encoding=\"UTF-8\" ?>"
                   + "<testsuites><testsuite><properties>"
                   + "<property/><property id=\"foo\">With some text</property>"
                   + "</properties><othertag/></testsuite></testsuites>";
        Document doc = builder.build(new StringReader(xml));
        Writer stringWriter = new StringWriter();
        new XMLOutputter().output(doc, stringWriter);
        String filteredXml = stringWriter.toString();
        assertTrue("<properties>-element should have been filtered",
                   filteredXml.indexOf("<properties>") == -1);
        assertTrue("<property>-elements should have been filtered",
                   filteredXml.indexOf("<property>") == -1);
        assertTrue("<testsuite>-element should not have been filtered",
                   filteredXml.indexOf("<testsuite>") != -1);
        assertTrue("<othertag>-element should not have been filtered",
                filteredXml.indexOf("<othertag") != -1);
    }
}