/**
* 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.net.urlnormalizer.regex;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileFilter;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.Reader;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.conf.Configuration;
import org.apache.nutch.net.URLNormalizers;
import org.apache.nutch.util.NutchConfiguration;
import junit.framework.TestCase;
/** Unit tests for RegexUrlNormalizer. */
public class TestRegexURLNormalizer extends TestCase {
private static final Log LOG = LogFactory.getLog(TestRegexURLNormalizer.class);
private RegexURLNormalizer normalizer;
private Configuration conf;
private HashMap testData = new HashMap();
// This system property is defined in ./src/plugin/build-plugin.xml
private String sampleDir = System.getProperty("test.data", ".");
// Make sure sample files are copied to "test.data" as specified in
// ./src/plugin/urlnormalizer-regex/build.xml during plugin compilation.
public TestRegexURLNormalizer(String name) throws IOException {
super(name);
normalizer = new RegexURLNormalizer();
conf = NutchConfiguration.create();
normalizer.setConf(conf);
File[] configs = new File(sampleDir).listFiles(new FileFilter() {
public boolean accept(File f) {
if (f.getName().endsWith(".xml") && f.getName().startsWith("regex-normalize-"))
return true;
return false;
}
});
for (int i = 0; i < configs.length; i++) {
try {
FileInputStream fis = new FileInputStream(configs[i]);
String cname = configs[i].getName();
cname = cname.substring(16, cname.indexOf(".xml"));
normalizer.setConfiguration(fis, cname);
NormalizedURL[] urls = readTestFile(cname);
testData.put(cname, urls);
} catch (Exception e) {
LOG.warn("Could load config from '" + configs[i] + "': " + e.toString());
}
}
}
public void testNormalizerDefault() throws Exception {
normalizeTest((NormalizedURL[])testData.get(URLNormalizers.SCOPE_DEFAULT),
URLNormalizers.SCOPE_DEFAULT);
}
public void testNormalizerScope() throws Exception {
Iterator it = testData.keySet().iterator();
while (it.hasNext()) {
String scope = (String)it.next();
normalizeTest((NormalizedURL[])testData.get(scope), scope);
}
}
private void normalizeTest(NormalizedURL[] urls, String scope) throws Exception {
for (int i = 0; i < urls.length; i++) {
String url = urls[i].url;
String normalized = normalizer.normalize(urls[i].url, scope);
String expected = urls[i].expectedURL;
LOG.info("scope: " + scope + " url: " + url + " | normalized: " + normalized + " | expected: " + expected);
assertEquals(urls[i].expectedURL, normalized);
}
}
private void bench(int loops, String scope) {
long start = System.currentTimeMillis();
try {
NormalizedURL[] expected = (NormalizedURL[])testData.get(scope);
if (expected == null) return;
for (int i = 0; i < loops; i++) {
normalizeTest(expected, scope);
}
} catch (Exception e) {
fail(e.toString());
}
LOG.info("bench time (" + loops + ") " +
(System.currentTimeMillis() - start) + "ms");
}
private static class NormalizedURL {
String url;
String expectedURL;
public NormalizedURL(String line) {
String[] fields = line.split("\\s+");
url = fields[0];
expectedURL = fields[1];
}
}
private NormalizedURL[] readTestFile(String scope) throws IOException {
File f = new File(sampleDir, "regex-normalize-" + scope + ".test");
BufferedReader in = new BufferedReader(new InputStreamReader(new FileInputStream(f), "UTF-8"));
List list = new ArrayList();
String line;
while((line = in.readLine()) != null) {
if ( line.trim().length() == 0 ||
line.startsWith("#") ||
line.startsWith(" ")) continue;
list.add(new NormalizedURL(line));
}
return (NormalizedURL[]) list.toArray(new NormalizedURL[list.size()]);
}
public static void main(String[] args) throws Exception {
if (args.length == 0) {
System.err.println("TestRegexURLNormalizer [-bench <iter>] <scope>");
System.exit(-1);
}
boolean bench = false;
int iter = -1;
String scope = null;
for (int i = 0; i < args.length; i++) {
if (args[i].equals("-bench")) {
bench = true;
iter = Integer.parseInt(args[++i]);
} else scope = args[i];
}
if (scope == null) {
System.err.println("Missing required scope name.");
System.exit(-1);
}
if (bench && iter < 0) {
System.err.println("Invalid number of iterations: " + iter);
System.exit(-1);
}
TestRegexURLNormalizer test = new TestRegexURLNormalizer("test");
NormalizedURL[] urls = (NormalizedURL[])test.testData.get(scope);
if (urls == null) {
LOG.warn("Missing test data for scope '" + scope + "', using default scope.");
scope = URLNormalizers.SCOPE_DEFAULT;
urls = (NormalizedURL[])test.testData.get(scope);
}
if (bench) {
test.bench(iter, scope);
} else {
test.normalizeTest(urls, scope);
}
}
}