TestPdfParser.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.parse.pdf;

import org.apache.nutch.protocol.ProtocolFactory;
import org.apache.nutch.protocol.Protocol;
import org.apache.nutch.protocol.Content;
import org.apache.nutch.protocol.ProtocolException;

import org.apache.nutch.parse.Parse;
import org.apache.nutch.parse.ParseUtil;
import org.apache.nutch.parse.ParseException;
import org.apache.hadoop.conf.Configuration;
import org.apache.nutch.util.NutchConfiguration;

import org.apache.hadoop.io.Text;
import org.apache.nutch.crawl.CrawlDatum;

import junit.framework.TestCase;

/** 
 * Unit tests for PdfParser.
 *
 * @author John Xing
 */
public class TestPdfParser 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",".");
  // Make sure sample files are copied to "test.data" as specified in
  // ./src/plugin/parse-pdf/build.xml during plugin compilation.
  // Check ./src/plugin/parse-pdf/sample/README.txt for what they are.
  private String[] sampleFiles = {
      "pdftest.pdf",
      "encrypted.pdf"
  };

  private String expectedText = "A VERY SMALL PDF FILE";

  public TestPdfParser(String name) { 
    super(name); 
  }

  protected void setUp() {}

  protected void tearDown() {}

  public void testIt() throws ProtocolException, ParseException {
    String urlString;
    Protocol protocol;
    Content content;
    Parse parse;

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

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

      int index = parse.getText().indexOf(expectedText);
      assertTrue(index > 0);
    }
  }

}