package org.apache.maven.shared.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.junit.Rule;
  import org.junit.Test;
  import org.junit.rules.TemporaryFolder;
  
  import java.io.ByteArrayInputStream;
  import java.io.File;
  import java.io.FileOutputStream;
  import java.io.InputStream;
  import java.lang.annotation.ElementType;
  import java.lang.annotation.Retention;
  import java.lang.annotation.RetentionPolicy;
  import java.lang.annotation.Target;
  import java.net.URL;
  import java.util.Properties;
  
  import static org.hamcrest.CoreMatchers.*;
  import static org.junit.Assert.assertThat;
  
  public class PropertyUtilsTest
  {
      @Retention( RetentionPolicy.RUNTIME )
      @Target( ElementType.METHOD )
      @interface NeedsTemporaryFolder
      {
      }
  
      @Rule
      public TemporaryFolder tempFolder = new TemporaryFolder();
  
  
      @Test
      // @ReproducesPlexusBug( "Should return null on error like url and file do" )
      public void loadNullInputStream()
          throws Exception
      {
          assertThat( PropertyUtils.loadProperties( (InputStream) null ), is( new Properties() ) );
      }
  
      @Test
      public void loadNullURL()
          throws Exception
      {
          assertThat( PropertyUtils.loadProperties( (URL) null ), nullValue( Properties.class ) );
      }
  
      @Test
      public void loadNullFile()
          throws Exception
      {
          assertThat( PropertyUtils.loadProperties( (File) null ), nullValue( Properties.class ) );
      }
  
      @Test
      public void loadEmptyInputStream()
          throws Exception
      {
          assertThat( PropertyUtils.loadProperties( new ByteArrayInputStream( new byte[0] ) ), is( new Properties() ) );
      }
  
      @Test
      @NeedsTemporaryFolder
      public void loadEmptyFile()
          throws Exception
      {
          assertThat( PropertyUtils.loadProperties( tempFolder.newFile( "empty" ) ), is( new Properties() ) );
      }
  
      @Test
      @NeedsTemporaryFolder
      public void loadEmptyURL()
          throws Exception
      {
          assertThat( PropertyUtils.loadProperties( tempFolder.newFile( "empty" ).toURI().toURL() ), is( new Properties() ) );
      }
  
      @Test
      public void loadValidInputStream()
          throws Exception
     {
         Properties value = new Properties();
         value.setProperty( "a", "b" );
         assertThat( PropertyUtils.loadProperties( new ByteArrayInputStream( "a=b".getBytes( "ISO-8859-1" ) ) ),
                     is( value ) );
     }
 
     @Test
     @NeedsTemporaryFolder
     public void loadValidFile()
         throws Exception
     {
         File valid = tempFolder.newFile( "valid" );
         Properties value = new Properties();
         value.setProperty( "a", "b" );
         value.store( new FileOutputStream( valid ), "a test" );
         assertThat( PropertyUtils.loadProperties( valid ), is( value ) );
     }
 
     @Test
     @NeedsTemporaryFolder
     public void loadValidURL()
         throws Exception
     {
         File valid = tempFolder.newFile( "valid" );
         Properties value = new Properties();
         value.setProperty( "a", "b" );
         value.store( new FileOutputStream( valid ), "a test" );
         assertThat( PropertyUtils.loadProperties( valid.toURI().toURL() ), is( value ) );
     }
 
 
 }