TestFeedParser.java

/**
 * 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.nutch.tika;

import junit.framework.TestCase;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.io.Text;
import org.apache.nutch.crawl.CrawlDatum;
import org.apache.nutch.parse.Outlink;
import org.apache.nutch.parse.Parse;
import org.apache.nutch.parse.ParseData;
import org.apache.nutch.parse.ParseException;
import org.apache.nutch.parse.ParseUtil;
import org.apache.nutch.parse.tika.TikaParser;
import org.apache.nutch.protocol.Content;
import org.apache.nutch.protocol.Protocol;
import org.apache.nutch.protocol.ProtocolException;
import org.apache.nutch.protocol.ProtocolFactory;
import org.apache.nutch.util.NutchConfiguration;

/**
 * 
 * @author mattmann / jnioche
 * 
 *         Test Suite for the RSS feeds with the {@link TikaParser}.
 * 
 */
public class TestFeedParser extends TestCase {

	private String fileSeparator = System.getProperty("file.separator");

	// This system property is defined in ./src/plugin/build-plugin.xml
	private String sampleDir = System.getProperty("test.data", ".");

	private String[] sampleFiles = { "rsstest.rss" };

	public static final Logger LOG = LoggerFactory.getLogger(TestFeedParser.class
			.getName());

	/**
	 * Default Constructor.
	 * 
	 * @param name
	 *            The name of this {@link TestCase}.
	 */
	public TestFeedParser(String name) {
		super(name);
	}

	/**
	 * <p>
	 * The test method: tests out the following 2 asserts:
	 * </p>
	 * 
	 * <ul>
	 * <li>There are 3 outlinks read from the sample rss file</li>
	 * <li>The 3 outlinks read are in fact the correct outlinks from the sample
	 * file</li>
	 * </ul>
	 */
	public void testIt() throws ProtocolException, ParseException {
		String urlString;
		Protocol protocol;
		Content content;
		Parse parse;

		Configuration conf = NutchConfiguration.create();
		for (int i = 0; i < sampleFiles.length; i++) {
			urlString = "file:" + sampleDir + fileSeparator + sampleFiles[i];

			protocol = new ProtocolFactory(conf).getProtocol(urlString);
			content = protocol.getProtocolOutput(new Text(urlString),
					new CrawlDatum()).getContent();
			parse = new ParseUtil(conf).parseByExtensionId("parse-tika",
					content).get(content.getUrl());

			// check that there are 2 outlinks:
			// unlike the original parse-rss
			// tika ignores the URL and description of the channel

			// http://test.channel.com
			// http://www-scf.usc.edu/~mattmann/
			// http://www.nutch.org

			ParseData theParseData = parse.getData();

			Outlink[] theOutlinks = theParseData.getOutlinks();

			assertTrue("There aren't 2 outlinks read!",
					theOutlinks.length == 2);

			// now check to make sure that those are the two outlinks
			boolean hasLink1 = false, hasLink2 = false;

			for (int j = 0; j < theOutlinks.length; j++) {
				if (theOutlinks[j].getToUrl().equals(
						"http://www-scf.usc.edu/~mattmann/")) {
					hasLink1 = true;
				}

				if (theOutlinks[j].getToUrl().equals("http://www.nutch.org/")) {
					hasLink2 = true;
				}
			}

			if (!hasLink1 || !hasLink2) {
				fail("Outlinks read from sample rss file are not correct!");
			}
		}
	}

}