package org.apache.maven.surefire.util.internal;
   
   /*
    * 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.nio.ByteBuffer;
  import java.nio.charset.Charset;
  
  import junit.framework.TestCase;
  import org.apache.maven.surefire.util.internal.StringUtils.EncodedArray;
  
  import static org.junit.Assert.assertArrayEquals;
  
  /**
   * @author Andreas Gudian
   */
  public class StringUtilsTest
      extends TestCase
  {
  
      public void testUnescapeString()
      {
          CharSequence inputString = createInputString();
  
          StringBuilder escaped = new StringBuilder( inputString.length() * 5 );
          int initialCapacity = escaped.capacity();
  
          StringUtils.escapeToPrintable( escaped, inputString );
  
          assertEquals( initialCapacity, escaped.capacity() );
  
          StringBuilder unescaped = new StringBuilder( inputString.length() );
          StringUtils.unescapeString( unescaped, escaped );
  
          assertEquals( inputString.length(), unescaped.length() );
  
          for ( int i = 0; i < inputString.length(); i++ )
          {
              if ( inputString.charAt( i ) != unescaped.charAt( i ) )
              {
                  fail( "Input and Unescaped String are not equal at position " + i );
              }
          }
      }
  
      private CharSequence createInputString()
      {
          StringBuilder sb = new StringBuilder();
          for ( int i = 0; i < Character.MAX_CODE_POINT; i++ )
          {
              sb.appendCodePoint( i );
          }
  
          return sb;
      }
  
      public void testUnescapeBytes()
      {
          byte[] input = new byte[256];
  
          for ( int i = 0; i <= 0xFF; i++ )
          {
              byte b = (byte) ( 0xFF & i );
              input[i] = b;
          }
  
          EncodedArray encodedArray = StringUtils.escapeBytesToPrintable( new byte[0], input, 0, input.length );
  
          String escapedString = new String( encodedArray.getArray(), 0, encodedArray.getSize() );
  
          assertEquals( encodedArray.getSize(), escapedString.length() );
  
          ByteBuffer unescaped = StringUtils.unescapeBytes( escapedString, Charset.defaultCharset().name() );
  
          assertEquals( input.length + 1, unescaped.remaining() - unescaped.position() );
  
          for ( int i = 0; i < input.length; i++ )
          {
              assertEquals( "At position " + i, input[i], unescaped.get() );
          }
      }
  
      public void testEscapeWithHeader()
     {
         byte[] header = { (byte) 'a' };
         byte[] input = { (byte) '1' };
 
         EncodedArray encodedArray = StringUtils.escapeBytesToPrintable( header, input, 0, input.length );
         assertEquals( 3, encodedArray.getSize() );
 
         byte[] expectedResult = new byte[] { (byte) 'a', (byte) '1', (byte) '\n' };
         byte[] actualResult = new byte[encodedArray.getSize()];
         System.arraycopy( encodedArray.getArray(), 0, actualResult, 0, encodedArray.getSize() );
 
         assertArrayEquals( expectedResult, actualResult );
     }
 
     public void testEmptyByteArray()
     {
         byte[] header = { (byte) 'a' };
         byte[] input = {};
         EncodedArray encodedArray = StringUtils.escapeBytesToPrintable( header, input, 0, input.length );
         assertEquals( 0, encodedArray.getSize() );
         assertEquals( 0, encodedArray.getArray().length );
     }
 
     public void testSubstringSmall()
     {
         byte[] header = { (byte) 'a' };
         byte[] input = "PleaseLookAfterThisBear".getBytes();
         EncodedArray encodedArray = StringUtils.escapeBytesToPrintable( header, input,
                 "Please".length(), "Look".length() );
         assertEquals( "Look",
                 new String( encodedArray.getArray(), 1, encodedArray.getArray().length-1).trim() );
     }
 
     public void testSubstringLarge()
     {
         byte[] header = { (byte) 'a' };
         byte[] input = "TheQuickBrownFoxJumpsOverTheLazyDog".getBytes();
         EncodedArray encodedArray = StringUtils.escapeBytesToPrintable( header, input,
                 "The".length(), "QuickBrownFoxJumpsOverTheLazy".length() );
         assertEquals( "QuickBrownFoxJumpsOverTheLazy",
                 new String( encodedArray.getArray(), 1, encodedArray.getArray().length-1).trim() );
     }
 }