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Lucene example source code file (StreamUtilsTest.java)

This example Lucene source code file (StreamUtilsTest.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Lucene tags/keywords

bufferedreader, bufferedwriter, bufferedwriter, exception, exception, file, file, fileoutputstream, inputstreamreader, io, outputstream, string, test, test, text

The Lucene StreamUtilsTest.java source code

package org.apache.lucene.benchmark.byTask.utils;

/**
 * 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.
 */

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileOutputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;

import org.apache.commons.compress.compressors.CompressorStreamFactory;
import org.apache.lucene.benchmark.BenchmarkTestCase;
import org.apache.lucene.benchmark.byTask.utils.StreamUtils;
import org.apache.lucene.util._TestUtil;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;

public class StreamUtilsTest extends BenchmarkTestCase {
  private static final String TEXT = "Some-Text..."; 
  private File testDir;
  
  @Test
  public void testGetInputStreamPlainText() throws Exception {
    assertReadText(rawTextFile("txt"));
    assertReadText(rawTextFile("TXT"));
  }

  @Test
  public void testGetInputStreamGzip() throws Exception {
    assertReadText(rawGzipFile("gz"));
    assertReadText(rawGzipFile("gzip"));
    assertReadText(rawGzipFile("GZ"));
    assertReadText(rawGzipFile("GZIP"));
  }

  @Test
  public void testGetInputStreamBzip2() throws Exception {
  	assertReadText(rawBzip2File("bz2"));
  	assertReadText(rawBzip2File("bzip"));
  	assertReadText(rawBzip2File("BZ2"));
  	assertReadText(rawBzip2File("BZIP"));
  }

  @Test
  public void testGetOutputStreamBzip2() throws Exception {
  	assertReadText(autoOutFile("bz2"));
  	assertReadText(autoOutFile("bzip"));
  	assertReadText(autoOutFile("BZ2"));
  	assertReadText(autoOutFile("BZIP"));
  }
  
  @Test
  public void testGetOutputStreamGzip() throws Exception {
  	assertReadText(autoOutFile("gz"));
  	assertReadText(autoOutFile("gzip"));
  	assertReadText(autoOutFile("GZ"));
  	assertReadText(autoOutFile("GZIP"));
  }

  @Test
  public void testGetOutputStreamPlain() throws Exception {
  	assertReadText(autoOutFile("txt"));
  	assertReadText(autoOutFile("text"));
  	assertReadText(autoOutFile("TXT"));
  	assertReadText(autoOutFile("TEXT"));
  }
  
  private File rawTextFile(String ext) throws Exception {
    File f = new File(testDir,"testfile." +	ext);
    BufferedWriter w = new BufferedWriter(new FileWriter(f));
    w.write(TEXT);
    w.newLine();
    w.close();
    return f;
  }
  
  private File rawGzipFile(String ext) throws Exception {
    File f = new File(testDir,"testfile." +	ext);
    OutputStream os = new CompressorStreamFactory().createCompressorOutputStream(CompressorStreamFactory.GZIP, new FileOutputStream(f));
    writeText(os);
    return f;
  }

  private File rawBzip2File(String ext) throws Exception {
  	File f = new File(testDir,"testfile." +	ext);
  	OutputStream os = new CompressorStreamFactory().createCompressorOutputStream(CompressorStreamFactory.BZIP2, new FileOutputStream(f));
  	writeText(os);
  	return f;
  }

  private File autoOutFile(String ext) throws Exception {
  	File f = new File(testDir,"testfile." +	ext);
  	OutputStream os = StreamUtils.outputStream(f);
  	writeText(os);
  	return f;
  }

	private void writeText(OutputStream os) throws IOException {
		BufferedWriter w = new BufferedWriter(new OutputStreamWriter(os));
  	w.write(TEXT);
  	w.newLine();
  	w.close();
	}

  private void assertReadText(File f) throws Exception {
    InputStream ir = StreamUtils.inputStream(f);
    InputStreamReader in = new InputStreamReader(ir);
    BufferedReader r = new BufferedReader(in);
    String line = r.readLine();
    assertEquals("Wrong text found in "+f.getName(), TEXT, line);
    r.close();
  }
  
  @Before
  public void setUp() throws Exception {
    super.setUp();
    testDir = new File(getWorkDir(),"ContentSourceTest");
    _TestUtil.rmDir(testDir);
    assertTrue(testDir.mkdirs());
  }

  @After
  public void tearDown() throws Exception {
    _TestUtil.rmDir(testDir);
    super.tearDown();
  }

}

Other Lucene examples (source code examples)

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