// BlogBridge -- RSS feed reader, manager, and web based service
// Copyright (C) 2002-2006 by R. Pito Salas
//
// This program is free software; you can redistribute it and/or modify it under
// the terms of the GNU General Public License as published by the Free Software Foundation;
// either version 2 of the License, or (at your option) any later version.
//
// This program 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License along with this program;
// if not, write to the Free Software Foundation, Inc., 59 Temple Place,
// Suite 330, Boston, MA 02111-1307 USA
//
// Contact: R. Pito Salas
// mailto:pitosalas@users.sourceforge.net
// More information: about BlogBridge
// http://www.blogbridge.com
// http://sourceforge.net/projects/blogbridge
//
// $Id: TestXMLFormatDetector.java,v 1.2 2006/11/27 17:00:02 spyromus Exp $
//

package com.salas.bb.utils.discovery.detector;

import junit.framework.TestCase;

import java.io.InputStream;
import java.io.ByteArrayInputStream;
import java.io.IOException;

/**
 * Tests detection of various formats.
 */
public class TestXMLFormatDetector extends TestCase
{
    private XMLFormatDetector detector;

    /**
     * Initialization.
     *
     * @throws Exception in case of error.
     */
    protected void setUp()
        throws Exception
    {
        super.setUp();
        detector = new XMLFormatDetector();
    }

    /** Tests unknown format. */
    public void testUnknown()
    {
        assertFormat(null, "Test");
        assertFormat(null, "");
    }

    /** Tests Atom detection. */
    public void testAtom()
    {
        assertFormat(XMLFormat.ATOM, "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n" +
            "<feed xmlns=\"http://www.w3.org/2005/Atom\" xmlns:dc=\"http://purl.org/dc/elements/1.1/\" " +
                "xmlns:thr=\"http://purl.org/syndication/thread/1.0\">\n" +
            "    <title>Charlene Li's Blog</title>");

        assertFormat(XMLFormat.ATOM, "\n<?xml version=\"1.0\" encoding=\"utf-8\"?>\n\n" +
            "<feed version=\"0.3\" xmlns=\"http://purl.org/atom/ns#\" xmlns:dc=\"http://purl.org/dc/elements/1.1/\">");
    }

    /** Tests OPML detection. */
    public void testOPML()
    {
        assertFormat(XMLFormat.OPML, "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n" +
            "<opml version=\"1.0\">\n" +
            "<head>\n" +
            "    <title>Oxford Journals</title>\n" +
            "    <dateCreated>2005-12-08</dateCreated>\n" +
            "</head>");
        
        assertFormat(XMLFormat.OPML, "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n" +
            "<!-- Generated by BlogBridge Service (http://www.blogbridge.com) on Mon, 21 Aug 2006 15:26:02 CDT -->\n" +
            "<opml version=\"1.1\" xmlns:bb=\"http://blogbridge.com/ns/2006/opml\"><head><title>NASA</title>");
    }

    /** Tests RSS detection. */
    public void testRSS()
    {
        assertFormat(XMLFormat.RSS, "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n" +
            "<rss version=\"1.0\"><channel><title>Physics Today magazine</title>");

        assertFormat(XMLFormat.RSS, "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n" +
            "<rss version=\"2.0\" xmlns:dc=\"http://purl.org/dc/elements/1.1/\">\n" +
            "\n" +
            "<channel>");

        assertFormat(XMLFormat.RSS, "<?xml version=\"1.0\"?>\n" +
            "<!DOCTYPE rss PUBLIC \"-//Netscape Communications//DTD RSS 0.91//EN\"\n" +
            "                     \"http://my.netscape.com/publish/formats/rss-0.91.dtd\">\n\n" +
            "<rss version=\"0.91\">");

        assertFormat(XMLFormat.RSS, "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n" +
            "<?xml-stylesheet href=\"http://feeds.feedburner.com/~d/styles/rss2full.xsl\" " +
            "type=\"text/xsl\" media=\"screen\"?>" +
            "<?xml-stylesheet href=\"http://feeds.feedburner.com/~d/styles/itemcontent.css\" " +
            "type=\"text/css\" media=\"screen\"?><!-- generator=\"wordpress/1.0-alpha-1\" -->" +
            "<rss xmlns:content=\"http://purl.org/rss/1.0/modules/content/\" " +
            "xmlns:feedburner=\"http://rssnamespace.org/feedburner/ext/1.0\" version=\"2.0\">");
    }

    /**
     * Checks RDF detection with arbitrary namespace.
     */
    public void testRDF()
    {
        assertFormat(XMLFormat.RDF, "<?xml version=\"1.0\" encoding=\"ISO-8859-1\" ?>" +
            "<rqwertyqwrety:RDF xmlns:rqwertyqwrety=\"http://www.w3.org/1999/02/22-rdf-syntax-ns#\" " +
            "xmlns=\"http://purl.org/rss/1.0/\" xmlns:dc=\"http://purl.org/dc/elements/1.1/\">");
    }


    private static InputStream str(String s)
    {
        return new ByteArrayInputStream(s.getBytes());
    }

    private void assertFormat(XMLFormat fmt, String s)
    {
        InputStream in = str(s);
        XMLFormat f = null;
        try
        {
            f = detector.detect(in);
        } catch (IOException e)
        {
            // Impossible
        }

        if (fmt == null) assertNull(f); else assertEquals(fmt, f);
    }
}