/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF 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
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * 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.apache.tika.utils;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertTrue;

import java.util.List;

import org.junit.Test;

/**
 * Test case for {@link RegexUtils}.
 *
 * @version $Revision$ $Date$
 */
public class RegexUtilsTest {

    /** 
     * Test {@link RegexUtils#extractLinks(String)} with no links.
     */

    @Test
    public void testExtractLinksNone() {
        List<String> links = null;
                
        links = RegexUtils.extractLinks(null);
        assertNotNull(links);
        assertEquals(0, links.size());
        
        links = RegexUtils.extractLinks("");
        assertNotNull(links);
        assertEquals(0, links.size());
        
        links = RegexUtils.extractLinks(
                "Test with no links " +
                "What about www.google.com");
        assertNotNull(links);
        assertEquals(0, links.size());
    }
      

    /** 
     * Test {@link RegexUtils#extractLinks(String)} for http.
     */
    @Test
    public void testExtractLinksHttp() {
        List<String> links = RegexUtils.extractLinks(
                "Test with http://www.nutch.org/index.html is it found? " +
                "What about www.google.com at http://www.google.de " +
                "A longer URL could be http://www.sybit.com/solutions/portals.html");
          
        assertTrue("Url not found!", links.size() == 3);
        assertEquals("Wrong URL", "http://www.nutch.org/index.html", links.get(0));
        assertEquals("Wrong URL", "http://www.google.de", links.get(1));
        assertEquals("Wrong URL", "http://www.sybit.com/solutions/portals.html", links.get(2));
    }
        
    /** 
     * Test {@link RegexUtils#extractLinks(String)} for ftp.
     */
    @Test
    public void testExtractLinksFtp() {
        List<String> links = RegexUtils.extractLinks(
                "Test with ftp://www.nutch.org is it found? " +
                "What about www.google.com at ftp://www.google.de");
         
        assertTrue("Url not found!", links.size() == 2);
        assertEquals("Wrong URL", "ftp://www.nutch.org", links.get(0));
        assertEquals("Wrong URL", "ftp://www.google.de", links.get(1));
    }
}