package org.apache.maven.plugins.assembly.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 org.apache.maven.plugins.assembly.format.AssemblyFormattingException;
  import org.codehaus.plexus.util.IOUtil;
  import org.junit.Test;
  
  import java.io.File;
  import java.io.FileReader;
  import java.io.FileWriter;
  import java.io.IOException;
  import java.io.StringReader;
  import java.io.StringWriter;
  import java.nio.file.Files;
  
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertNull;
  
  public class LineEndingsUtilsTest
  {
  
      private static final String CRLF = "\r\n";
  
      private static final String LF = "\n";
  
      @Test
      public void shouldWorkCauseWeTestJdkEnumConversion()
      {
          LineEndings lineEnding = LineEndings.valueOf( "windows" );
          assertEquals( CRLF, lineEnding.getLineEndingCharacters() );
      }
  
      @Test
      public void shouldReturnDosLineEnding()
      {
          assertEquals( CRLF, LineEndings.windows.getLineEndingCharacters() );
          assertEquals( CRLF, LineEndings.dos.getLineEndingCharacters() );
          assertEquals( CRLF, LineEndings.crlf.getLineEndingCharacters() );
      }
  
      @Test
      public void shouldReturnUnixLineEnding()
      {
          assertEquals( LF, LineEndings.unix.getLineEndingCharacters() );
          assertEquals( LF, LineEndings.lf.getLineEndingCharacters() );
      }
  
      @Test
      public void shouldReturnNullAsLineEndingForKeep()
      {
          assertEquals( null, LineEndings.keep.getLineEndingCharacters() );
      }
  
      @Test
      public void testGetLineEndingChars_ShouldReturnDosLineEnding()
          throws AssemblyFormattingException
      {
          assertEquals( "\r\n", LineEndingsUtils.getLineEndingCharacters( "windows" ) );
          assertEquals( "\r\n", LineEndingsUtils.getLineEndingCharacters( "dos" ) );
          assertEquals( "\r\n", LineEndingsUtils.getLineEndingCharacters( "crlf" ) );
      }
  
      @Test
      public void testGetLineEndingChars_ShouldReturnUnixLineEnding()
          throws AssemblyFormattingException
      {
          assertEquals( "\n", LineEndingsUtils.getLineEndingCharacters( "unix" ) );
          assertEquals( "\n", LineEndingsUtils.getLineEndingCharacters( "lf" ) );
      }
  
      @Test
      public void testGetLineEndingChars_ShouldReturnNullLineEnding()
          throws AssemblyFormattingException
      {
          assertNull( LineEndingsUtils.getLineEndingCharacters( "keep" ) );
      }
  
      @Test( expected = AssemblyFormattingException.class )
      public void testGetLineEndingChars_ShouldThrowFormattingExceptionWithInvalidHint()
          throws AssemblyFormattingException
      {
         LineEndingsUtils.getLineEndingCharacters( "invalid" );
     }
 
     @Test
     public void testConvertLineEndings_ShouldReplaceLFWithCRLF()
         throws IOException
     {
         String test = "This is a \ntest.";
         String check = "This is a \r\ntest.";
 
         testConversion( test, check, LineEndings.crlf, null );
     }
 
     @Test
     public void testConvertLineEndings_ShouldReplaceLFWithCRLFAtEOF()
         throws IOException
     {
         String test = "This is a \ntest.\n";
         String check = "This is a \r\ntest.\r\n";
 
         testConversion( test, check, LineEndings.crlf, null );
     }
 
     @Test
     public void testConvertLineEndings_ShouldReplaceCRLFWithLF()
         throws IOException
     {
         String test = "This is a \r\ntest.";
         String check = "This is a \ntest.";
 
         testConversion( test, check, LineEndings.lf, null );
     }
 
     @Test
     public void testConvertLineEndings_ShouldReplaceCRLFWithLFAtEOF()
         throws IOException
     {
         String test = "This is a \r\ntest.\r\n";
         String check = "This is a \ntest.\n";
 
         testConversion( test, check, LineEndings.lf, null );
     }
 
     @Test
     public void testConvertLineEndings_ShouldReplaceLFWithLF()
         throws IOException
     {
         String test = "This is a \ntest.";
         String check = "This is a \ntest.";
 
         testConversion( test, check, LineEndings.lf, null );
     }
 
     @Test
     public void testConvertLineEndings_ShouldReplaceLFWithLFAtEOF()
         throws IOException
     {
         String test = "This is a \ntest.\n";
         String check = "This is a \ntest.\n";
 
         testConversion( test, check, LineEndings.lf, null );
     }
 
     @Test
     public void testConvertLineEndings_ShouldReplaceCRLFWithCRLF()
         throws IOException
     {
         String test = "This is a \r\ntest.";
         String check = "This is a \r\ntest.";
 
         testConversion( test, check, LineEndings.crlf, null );
     }
 
     @Test
     public void testConvertLineEndings_ShouldReplaceCRLFWithCRLFAtEOF()
         throws IOException
     {
         String test = "This is a \r\ntest.\r\n";
         String check = "This is a \r\ntest.\r\n";
 
         testConversion( test, check, LineEndings.crlf, null );
     }
 
     @Test
     public void testConvertLineEndings_LFToCRLFNoEOFForceEOF()
         throws IOException
     {
         String test = "This is a \ntest.";
         String check = "This is a \r\ntest.\r\n";
 
         testConversion( test, check, LineEndings.crlf, true );
     }
 
     @Test
     public void testConvertLineEndings_LFToCRLFWithEOFForceEOF()
         throws IOException
     {
         String test = "This is a \ntest.\n";
         String check = "This is a \r\ntest.\r\n";
 
         testConversion( test, check, LineEndings.crlf, true );
     }
 
     @Test
     public void testConvertLineEndings_LFToCRLFNoEOFStripEOF()
         throws IOException
     {
         String test = "This is a \ntest.";
         String check = "This is a \r\ntest.";
 
         testConversion( test, check, LineEndings.crlf, false );
     }
 
     @Test
     public void testConvertLineEndings_LFToCRLFWithEOFStripEOF()
         throws IOException
     {
         String test = "This is a \ntest.\n";
         String check = "This is a \r\ntest.";
 
         testConversion( test, check, LineEndings.crlf, false );
     }
 
     @Test
     public void testConvertLineEndings_CRLFToLFNoEOFForceEOF()
         throws IOException
     {
         String test = "This is a \r\ntest.";
         String check = "This is a \ntest.\n";
 
         testConversion( test, check, LineEndings.lf, true );
     }
 
     @Test
     public void testConvertLineEndings_CRLFToLFWithEOFForceEOF()
         throws IOException
     {
         String test = "This is a \r\ntest.\r\n";
         String check = "This is a \ntest.\n";
 
         testConversion( test, check, LineEndings.lf, true );
     }
 
     @Test
     public void testConvertLineEndings_CRLFToLFNoEOFStripEOF()
         throws IOException
     {
         String test = "This is a \r\ntest.";
         String check = "This is a \ntest.";
 
         testConversion( test, check, LineEndings.lf, false );
     }
 
     @Test
     public void testConvertLineEndings_CRLFToLFWithEOFStripEOF()
         throws IOException
     {
         String test = "This is a \r\ntest.\r\n";
         String check = "This is a \ntest.";
 
         testConversion( test, check, LineEndings.lf, false );
     }
 
     private void testConversion( String test, String check, LineEndings lineEndingChars, Boolean eof )
         throws IOException
     {
         File source = Files.createTempFile( "line-conversion-test-in.", "" ).toFile();
         source.deleteOnExit();
         File dest = Files.createTempFile( "line-conversion-test-out.", "" ).toFile();
         dest.deleteOnExit();
 
         FileWriter sourceWriter = null;
         StringReader sourceReader = new StringReader( test );
         try
         {
             sourceWriter = new FileWriter( source );
 
             IOUtil.copy( sourceReader, sourceWriter );
 
             sourceWriter.close();
             sourceWriter = null;
         }
         finally
         {
             IOUtil.close( sourceWriter );
         }
 
         // Using platform encoding for the conversion tests in this class is OK
         LineEndingsUtils.convertLineEndings( source, dest, lineEndingChars, eof, null );
 
         FileReader destReader = null;
         StringWriter destWriter = new StringWriter();
         try
         {
             destReader = new FileReader( dest );
 
             IOUtil.copy( destReader, destWriter );
 
             assertEquals( check, destWriter.toString() );
 
             destWriter.close();
             destWriter = null;
             destReader.close();
             destReader = null;
         }
         finally
         {
             IOUtil.close( destWriter );
             IOUtil.close( destReader );
         }
     }
 
 }