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From dona...@apache.org
Subject cvs commit: jakarta-ant/proposal/myrmidon/src/testcases/org/apache/aut/bzip2 BzipTest.java
Date Sat, 02 Feb 2002 13:57:26 GMT
donaldp     02/02/02 05:57:26

  Added:       proposal/myrmidon/src/testcases/org/apache/aut/bzip2
                        BzipTest.java
  Log:
  Add in unit test for bzip input/output streams
  
  Revision  Changes    Path
  1.1                  jakarta-ant/proposal/myrmidon/src/testcases/org/apache/aut/bzip2/BzipTest.java
  
  Index: BzipTest.java
  ===================================================================
  /*
   * Copyright (C) The Apache Software Foundation. All rights reserved.
   *
   * This software is published under the terms of the Apache Software License
   * version 1.1, a copy of which has been included  with this distribution in
   * the LICENSE.txt file.
   */
  package org.apache.aut.bzip2;
  
  import java.io.File;
  import java.io.FileInputStream;
  import java.io.FileOutputStream;
  import java.io.IOException;
  import java.io.InputStream;
  import java.io.OutputStream;
  import junit.framework.TestCase;
  import org.apache.avalon.excalibur.io.FileUtil;
  import org.apache.avalon.excalibur.io.IOUtil;
  
  /**
   * A test the stress tested the BZip implementation to verify
   * that it behaves correctly.
   *
   * @author <a href="mailto:peter@apache.org">Peter Donald</a>
   * @version $Revision: 1.1 $ $Date: 2002/02/02 13:57:26 $
   */
  public class BzipTest
      extends TestCase
  {
      private final static byte[] HEADER = new byte[]{(byte)'B', (byte)'Z'};
  
      public BzipTest( final String name )
      {
          super( name );
      }
  
      public void testBzipOutputStream()
          throws Exception
      {
          final InputStream input = getInputStream( "asf-logo-huge.tar" );
          final File outputFile = getOutputFile( ".tar.bz2" );
          final OutputStream output = new FileOutputStream( outputFile );
          final CBZip2OutputStream packedOutput = getPackedOutput( output );
          IOUtil.copy( input, packedOutput );
          IOUtil.shutdownStream( input );
          IOUtil.shutdownStream( packedOutput );
          IOUtil.shutdownStream( output );
          compareContents( "asf-logo-huge.tar.bz2", outputFile );
          FileUtil.forceDelete( outputFile );
      }
  
      public void testBzipInputStream()
          throws Exception
      {
          final InputStream input = getInputStream( "asf-logo-huge.tar.bz2" );
          final File outputFile = getOutputFile( ".tar" );
          final OutputStream output = new FileOutputStream( outputFile );
          final CBZip2InputStream packedInput = getPackedInput( input );
          IOUtil.copy( packedInput, output );
          IOUtil.shutdownStream( input );
          IOUtil.shutdownStream( packedInput );
          IOUtil.shutdownStream( output );
          compareContents( "asf-logo-huge.tar", outputFile );
          FileUtil.forceDelete( outputFile );
      }
  
      private void compareContents( final String initial, final File generated )
          throws Exception
      {
          final InputStream input1 = getInputStream( initial );
          final InputStream input2 = new FileInputStream( generated );
          final boolean test = IOUtil.contentEquals( input1, input2 );
          IOUtil.shutdownStream( input1 );
          IOUtil.shutdownStream( input2 );
          assertTrue( "Contents of " + initial + " matches generated version " + generated,
test );
      }
  
      private CBZip2InputStream getPackedInput( final InputStream input )
          throws IOException
      {
          final int b1 = input.read();
          final int b2 = input.read();
          assertEquals( "Equal header byte1", b1, 'B' );
          assertEquals( "Equal header byte2", b2, 'Z' );
          return new CBZip2InputStream( input );
      }
  
      private CBZip2OutputStream getPackedOutput( final OutputStream output )
          throws IOException
      {
          output.write( HEADER );
          return new CBZip2OutputStream( output );
      }
  
      private File getOutputFile( final String postfix )
          throws IOException
      {
          final File cwd = new File( "." );
          return File.createTempFile( "ant-test", postfix, cwd );
      }
  
      private InputStream getInputStream( final String resource )
          throws Exception
      {
          final String filename = "src" + File.separator + "testcases" + File.separator +
              getClass().getName().replace( '.', File.separatorChar );
          final String path = FileUtil.getPath( filename );
          final File input = new File( path, resource );
          return new FileInputStream( input );
          //final ClassLoader loader = getClass().getClassLoader();
          //return loader.getResourceAsStream( resource );
      }
  }
  
  
  

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