* XAdES4j - A Java library for generation and verification of XAdES signatures.
 * Copyright (C) 2017 Luis Goncalves.
 * XAdES4j is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation; either version 3 of the License, or any later version.
 * XAdES4j 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 Lesser General Public License for more
 * details.
 * You should have received a copy of the GNU Lesser General Public License along
 * with XAdES4j. If not, see <http://www.gnu.org/licenses/>.
package xades4j.utils;

import java.io.StringReader;
import java.util.Collection;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.junit.Assert;
import org.junit.Test;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.xml.sax.InputSource;

 * @author luis
public class DOMHelperTest
    public void testGetChildElementsByTagNameNS() throws Exception
        String xml = "<root><a xmlns='urn:test'/><b/><n:a xmlns:n='urn:test'/><c/></root>";
        DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
        DocumentBuilder db = dbf.newDocumentBuilder();
        Document doc = db.parse(new InputSource(new StringReader(xml)));
        Collection<Element> elements = DOMHelper.getChildElementsByTagNameNS(doc.getDocumentElement(), "urn:test", "a");
        Assert.assertEquals(2, elements.size());
        for (Element element : elements)
            Assert.assertEquals("a", element.getLocalName());