/**
 * Copyright 2007 The JA-SIG Collaborative.  All rights reserved.
 * See license distributed with this file and
 * available online at http://www.uportal.org/license.html
 */
package org.jasig.portal.io;

import static org.jasig.portal.io.ChannelTitleIncorporationWiterFilter.TITLE_TOKEN_PREFIX;
import static org.jasig.portal.io.ChannelTitleIncorporationWiterFilter.TITLE_TOKEN_SUFFIX;

import java.io.StringWriter;

import junit.framework.TestCase;

/**
 * @author Eric Dalquist
 * @version $Revision$
 */
public class ChannelTitleIncorporationWiterFilterTest extends TestCase {
    public void testRewriting() throws Exception {
        //normal test
        this.testRewriting(
                "<img src=\"foo\" alt=\"Channel '12' Title\"/>", 
                "<img src=\"foo\" alt=\"" + TITLE_TOKEN_PREFIX + "12" + TITLE_TOKEN_SUFFIX + "\"/>");
        
        //start of string
        this.testRewriting(
                "Channel '12' Title\"/>", 
                TITLE_TOKEN_PREFIX + "12" + TITLE_TOKEN_SUFFIX + "\"/>");
        
        //end of string
        this.testRewriting(
                "<img src=\"foo\" alt=\"Channel '12' Title", 
                "<img src=\"foo\" alt=\"" + TITLE_TOKEN_PREFIX + "12" + TITLE_TOKEN_SUFFIX);

        //partial prefix
        this.testRewriting(
                "<img src=\"UP:U\" alt=\"Channel '12' Title\"/>", 
                "<img src=\"UP:U\" alt=\"" + TITLE_TOKEN_PREFIX + "12" + TITLE_TOKEN_SUFFIX + "\"/>");

        /* Not applicable with a single char suffix
        //partial suffix
        this.testRewriting(
                "<img src=\"foo\" alt=\"Channel '1}2' Title\"/>", 
                "<img src=\"foo\" alt=\"" + TITLE_TOKEN_PREFIX + "1}2" + TITLE_TOKEN_SUFFIX + "\"/>");
        */
        
        //no channel id
        this.testRewriting(
                "<img src=\"foo\" alt=\"" + TITLE_TOKEN_PREFIX + TITLE_TOKEN_SUFFIX + "\"/>", 
                "<img src=\"foo\" alt=\"" + TITLE_TOKEN_PREFIX + TITLE_TOKEN_SUFFIX + "\"/>");

        //max length channel id
        this.testRewriting(
                "<img src=\"foo\" alt=\"Channel '12345678901234567890123456789012' Title\"/>", 
                "<img src=\"foo\" alt=\"" + TITLE_TOKEN_PREFIX + "12345678901234567890123456789012" + TITLE_TOKEN_SUFFIX + "\"/>");
        
        //too-long channel id
        this.testRewriting(
                "<img src=\"foo\" alt=\"" + TITLE_TOKEN_PREFIX + "123456789012345678901234567890123" + TITLE_TOKEN_SUFFIX + "\"/>", 
                "<img src=\"foo\" alt=\"" + TITLE_TOKEN_PREFIX + "123456789012345678901234567890123" + TITLE_TOKEN_SUFFIX + "\"/>");

        //nested too-long channel id
        this.testRewriting(
                "<img src=\"foo\" alt=\"" + TITLE_TOKEN_PREFIX + "\"/> Channel \'8901234567890123\' Title", 
                "<img src=\"foo\" alt=\"" + TITLE_TOKEN_PREFIX + "\"/> " + TITLE_TOKEN_PREFIX + "8901234567890123" + TITLE_TOKEN_SUFFIX + "");
    }
    
    private void testRewriting(String expected, String toFilter) throws Exception {
        final StringWriter writer = new StringWriter();
        final ChannelTitleIncorporationWiterFilter filter = new ChannelTitleIncorporationWiterFilter(writer);
        
        filter.write(toFilter);
        filter.flush();
        filter.close();
        
        final StringBuffer filteredString = writer.getBuffer();
        
        System.out.println("I|" + toFilter + "|");
        System.out.println("O|" + filteredString + "|");
        System.out.println("E|" + expected + "|");
        System.out.println();
        
        assertEquals(expected, filteredString.toString());
    }
}