package org.apache.maven.plugins.shade.resource;
   
   import java.io.ByteArrayInputStream;
   import java.io.IOException;
   import java.util.Collections;
   import java.util.List;
   
   import org.apache.maven.plugins.shade.relocation.Relocator;
   
  import org.junit.Before;
  import org.junit.Test;
  
  import static org.junit.Assert.fail;
  
  
  /*
   * 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.
   */
  
  /**
   * Tests {@link ApacheLicenseResourceTransformer} parameters.
   */
  public class ApacheNoticeResourceTransformerParameterTests
  {
  	
  	private static final String NOTICE_RESOURCE = "META-INF/NOTICE";
  	private ApacheNoticeResourceTransformer subject;
  
      @Before
      public void setUp()
      {
          subject = new ApacheNoticeResourceTransformer();
      }
  	
      @Test
      public void testNoParametersShouldNotThrowNullPointerWhenNoInput()
          throws IOException
      {
          processAndFailOnNullPointer( "" );
      }
  
      @Test
      public void testNoParametersShouldNotThrowNullPointerWhenNoLinesOfInput()
          throws IOException
      {
          processAndFailOnNullPointer( "Some notice text" );
      }
  
      @Test
      public void testNoParametersShouldNotThrowNullPointerWhenOneLineOfInput()
          throws IOException
      {
          processAndFailOnNullPointer( "Some notice text\n" );
      }
  
      @Test
      public void testNoParametersShouldNotThrowNullPointerWhenTwoLinesOfInput()
          throws IOException
      {
          processAndFailOnNullPointer( "Some notice text\nSome notice text\n" );
      }
  
      @Test
      public void testNoParametersShouldNotThrowNullPointerWhenLineStartsWithSlashSlash()
          throws IOException
      {
          processAndFailOnNullPointer( "Some notice text\n//Some notice text\n" );
      }
  
      @Test
      public void testNoParametersShouldNotThrowNullPointerWhenLineIsSlashSlash()
          throws IOException
      {
          processAndFailOnNullPointer( "//\n" );
      }
  
      @Test
      public void testNoParametersShouldNotThrowNullPointerWhenLineIsEmpty()
          throws IOException
      {
          processAndFailOnNullPointer( "\n" );
      }
  
      private void processAndFailOnNullPointer( final String noticeText )
         throws IOException
     {
         try
         {
             final ByteArrayInputStream noticeInputStream = new ByteArrayInputStream( noticeText.getBytes() );
             final List<Relocator> emptyList = Collections.emptyList();
             subject.processResource( NOTICE_RESOURCE, noticeInputStream, emptyList, 0 );
             noticeInputStream.close();
         }
         catch ( NullPointerException e )
         {
             fail( "Null pointer should not be thrown when no parameters are set." );
         }
     }
 }