/**
* 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.parse.metatags;
import java.util.Set;
import java.util.TreeSet;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.io.Text;
import org.apache.nutch.crawl.CrawlDatum;
import org.apache.nutch.metadata.Metadata;
import org.apache.nutch.parse.Parse;
import org.apache.nutch.parse.ParseUtil;
import org.apache.nutch.protocol.Content;
import org.apache.nutch.protocol.Protocol;
import org.apache.nutch.protocol.ProtocolFactory;
import org.apache.nutch.util.NutchConfiguration;
import org.junit.Assert;
import org.junit.Test;
public class TestMetatagParser {
private String fileSeparator = System.getProperty("file.separator");
private String sampleDir = System.getProperty("test.data", ".");
private String sampleFile = "testMetatags.html";
private String sampleFileMultival = "testMultivalueMetatags.html";
private String description = "This is a test of description";
private String keywords = "This is a test of keywords";
public Metadata parseMeta(String fileName, Configuration conf) {
Metadata metadata = null;
try {
String urlString = "file:" + sampleDir + fileSeparator + fileName;
Protocol protocol = new ProtocolFactory(conf).getProtocol(urlString);
Content content = protocol.getProtocolOutput(new Text(urlString),
new CrawlDatum()).getContent();
Parse parse = new ParseUtil(conf).parse(content).get(content.getUrl());
metadata = parse.getData().getParseMeta();
} catch (Exception e) {
e.printStackTrace();
Assert.fail(e.toString());
}
return metadata;
}
@Test
/** test defaults: keywords and description */
public void testIt() {
Configuration conf = NutchConfiguration.create();
// check that we get the same values
Metadata parseMeta = parseMeta(sampleFile, conf);
Assert.assertEquals(description, parseMeta.get("metatag.description"));
Assert.assertEquals(keywords, parseMeta.get("metatag.keywords"));
}
@Test
/** test multiple metatags resulting in metadata with multiple values */
public void testMultiValueMetatags() {
Configuration conf = NutchConfiguration.create();
conf.set("metatags.names", "keywords,DC.creator");
conf.set("index.parse.md", "metatag.keywords,metatag.dc.creator");
Metadata parseMeta = parseMeta(sampleFileMultival, conf);
String failMessage = "One value of metatag with multiple values is missing: ";
Set<String> valueSet = new TreeSet<String>();
for (String val : parseMeta.getValues("metatag.dc.creator")) {
valueSet.add(val);
}
String[] expectedValues1 = { "Doug Cutting", "Michael Cafarella" };
for (String val : expectedValues1) {
Assert.assertTrue(failMessage + val, valueSet.contains(val));
}
valueSet.clear();
for (String val : parseMeta.getValues("metatag.keywords")) {
valueSet.add(val);
}
String[] expectedValues2 = { "robot d'indexation", "web crawler",
"Webcrawler" };
for (String val : expectedValues2) {
Assert.assertTrue(failMessage + val, valueSet.contains(val));
}
}
}