hadoop-mapreduce/src/contrib/streaming/src/test/org/apache/hadoop/streaming/TestStreamXmlRecordReader.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.hadoop.streaming;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;

/**
 * This class tests StreamXmlRecordReader
 * The test creates an XML file, uses StreamXmlRecordReader and compares
 * the expected output against the generated output
 */
public class TestStreamXmlRecordReader extends TestStreaming {

  public TestStreamXmlRecordReader() throws IOException {
    INPUT_FILE = new File("input.xml");
    input = "<xmltag>\t\nroses.are.red\t\nviolets.are.blue\t\n" +
        "bunnies.are.pink\t\n</xmltag>\t\n";
    map = "cat";
    reduce = "NONE";
    outputExpect = input;
  }

  @Override
  protected void createInput() throws IOException
  {
    FileOutputStream out = new FileOutputStream(INPUT_FILE.getAbsoluteFile());
    String dummyXmlStartTag = "<PATTERN>\n";
    String dummyXmlEndTag = "</PATTERN>\n";
    out.write(dummyXmlStartTag.getBytes("UTF-8"));
    out.write(input.getBytes("UTF-8"));
    out.write(dummyXmlEndTag.getBytes("UTF-8"));
    out.close();
  }

  @Override
  protected String[] genArgs() {
    args.add("-inputreader");
    args.add("StreamXmlRecordReader,begin=<xmltag>,end=</xmltag>");
    return super.genArgs();
  }
}