source: josm/test/org/openstreetmap/josm/test/GpxWriterTest.java@ 64

package org.openstreetmap.josm.test;

import java.io.IOException;
import java.io.StringReader;
import java.io.StringWriter;

import junit.framework.TestCase;

import org.jdom.Element;
import org.jdom.JDOMException;
import org.jdom.Namespace;
import org.jdom.input.SAXBuilder;
import org.openstreetmap.josm.data.osm.DataSet;
import org.openstreetmap.josm.io.GpxWriter;
import org.openstreetmap.josm.test.framework.Bug;
import org.openstreetmap.josm.test.framework.DataSetTestCaseHelper;

public class GpxWriterTest extends TestCase {

        private static Namespace GPX = Namespace.getNamespace("http://www.topografix.com/GPX/1/0");
        private static Namespace JOSM = Namespace.getNamespace("http://wiki.eigenheimstrasse.de/wiki/JOSM");

        private DataSet ds;

        private Element root;

        /**
         * Verify that deleted objects that are not uploaded to the server does not show up
         * in gpx save output at all.
         */
        @Bug(47)
        public void testDeleteNewDoesReallyRemove() throws JDOMException, IOException {
                ds.waies.iterator().next().setDeleted(true);
                root = reparse();
                assertEquals("way has vanished and 3 trk (segments) left", 3, root.getChildren("trk", GPX).size());
        }

        
        /**
         * Verify, that new created elements, if and only if they occoure more than once in
         * the file, have a negative id attached.
         */
        @Bug(47)
        public void testNewCreateAddIdWhenMoreThanOnce() {
                // the trk with the two trkseg's only occoure once -> no extension id
                Element realWay = null;
                for (Object o : root.getChildren("trk", GPX)) {
                        Element e = (Element)o;
                        if (e.getChildren("trkseg", GPX).size() != 2)
                                continue;
                        Element ext = e.getChild("extensions", GPX);
                        if (ext != null)
                                assertEquals("no id for way (used only once)", 0, ext.getChildren("uid", JOSM).size());
                        realWay = e;
                }
                assertNotNull("way not found in GPX file", realWay);
                
                // the second point of the first segment of the waies has an id
                Element trkseg = (Element)realWay.getChildren("trkseg", GPX).get(0);
                Element trkpt = (Element)trkseg.getChildren("trkpt", GPX).get(1);
                assertEquals("waypoint used twice but has no extensions at all", 1, trkpt.getChildren("extensions", GPX).size());
                Element ext = trkpt.getChild("extensions", GPX);
                assertEquals("waypoint used twice but has no id", 1, ext.getChildren("uid", JOSM).size());
        }


        /**
         * Parse the intern dataset and return the root gpx - element.
         */
        private Element reparse() throws IOException, JDOMException {
                StringWriter out = new StringWriter();
                GpxWriter writer = new GpxWriter(out, ds);
                writer.output();
                Element root = new SAXBuilder().build(new StringReader(out.toString())).getRootElement();
                return root;
        }


        @Override
        protected void setUp() throws Exception {
                super.setUp();
                ds = DataSetTestCaseHelper.createCommon();
                root = reparse();
        }
}