/**
 * Licensed to Apereo under one or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information regarding copyright ownership. Apereo
 * licenses this file to you under the Apache License, Version 2.0 (the "License"); you may not use
 * this file except in compliance with the License. You may obtain a copy of the License at the
 * following location:
 *
 * <p>http://www.apache.org/licenses/LICENSE-2.0
 *
 * <p>Unless required by applicable law or agreed to in writing, software distributed under the
 * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
 * express or implied. See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apereo.portal.xml;

import static org.junit.Assert.assertEquals;

import java.io.IOException;
import java.io.InputStream;
import javax.xml.xpath.XPath;
import javax.xml.xpath.XPathConstants;
import javax.xml.xpath.XPathExpression;
import javax.xml.xpath.XPathFactory;
import org.apache.commons.io.IOUtils;
import org.apereo.portal.utils.DocumentFactory;
import org.junit.Test;
import org.w3c.dom.Document;
import org.w3c.dom.Node;
import org.xml.sax.SAXException;

/**
 */
public class XmlUtilitiesImplTest {
    @Test
    public void testGetUniqueXPath() throws Exception {
        final Document testDoc = loadTestDocument();

        final XPathFactory xPathFactory = XPathFactory.newInstance();
        final XPath xPath = xPathFactory.newXPath();
        final XPathExpression xPathExpression = xPath.compile("//*[@ID='11']");

        final Node node = (Node) xPathExpression.evaluate(testDoc, XPathConstants.NODE);

        final XmlUtilitiesImpl xmlUtilities = new XmlUtilitiesImpl();
        final String nodePath = xmlUtilities.getUniqueXPath(node);

        assertEquals("/layout/folder[2]/folder[3]", nodePath);
    }

    private Document loadTestDocument() throws IOException, SAXException {
        final InputStream testDocStream =
                this.getClass().getResourceAsStream("/org/apereo/portal/xml/xmlUtilitiesTest.xml");
        final Document testDoc =
                DocumentFactory.getDocumentFromStream(testDocStream, "xmlUtilitiesTest.xml");
        IOUtils.closeQuietly(testDocStream);
        return testDoc;
    }
}