package org.apache.commons.jcs.utils.zip;
   
   /*
    * 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 junit.framework.TestCase;
  
  import java.io.ByteArrayOutputStream;
  import java.io.IOException;
  import java.util.zip.GZIPOutputStream;
  
  /** Unit tests for the compression util */
  public class CompressionUtilUnitTest
      extends TestCase
  {
      /** Test method for decompressByteArray. */
      public final void testDecompressByteArray_failure()
      {
          try
          {
              // DO WORK
              CompressionUtil.decompressByteArray( null );
  
              // VERIFY
              fail( "excepted an IllegalArgumentException" );
          }
          catch ( IllegalArgumentException exception )
          {
              // expected
              return;
          }
      }
  
      /**
       * Test method for decompressByteArray.
       * <p>
       * @throws IOException
       */
      public final void testCompressDecompressByteArray_success()
          throws IOException
      {
          // SETUP
          String text = "This is some text to compress, not a lot, just a bit ";
  
          // DO WORK
          byte[] compressedText = CompressionUtil.compressByteArray( text.getBytes() );
          byte[] output = CompressionUtil.decompressByteArray( compressedText );
  
          // VERIFY
          String result = new String( output );
          assertNotNull( "decompressed output stream shouldn't have been null ", output );
          assertEquals( text, result );
      }
  
      /**
       * Test method for decompressByteArray.
       * <p>
       * @throws IOException
       */
      public final void testCompressDecompressGzipByteArray_success()
          throws IOException
      {
          // SETUP
          String text = " This is some text to compress, not a lot, just a bit ";
  
          ByteArrayOutputStream baos = new ByteArrayOutputStream();
          GZIPOutputStream os = new GZIPOutputStream( baos );
  
          os.write( text.getBytes() );
          os.flush();
          os.close();
  
          // DO WORK
          byte[] output = CompressionUtil.decompressGzipByteArray( baos.toByteArray() );
  
          // VERIFY
          String result = new String( output );
          assertNotNull( "decompressed output stream shouldn't have been null ", output );
          assertEquals( text, result );
      }
  }