package org.apache.maven.shared.filtering;
   
   /*
    * 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.io.File;
  import java.io.FileWriter;
  import java.io.IOException;
  import java.util.ArrayList;
  import java.util.Properties;
  
  import org.codehaus.plexus.PlexusTestCase;
  import org.codehaus.plexus.logging.Logger;
  
  /**
   * @author Olivier Lamy
   * @since 1.0-beta-1
   *
   */
  public class PropertyUtilsTest
      extends PlexusTestCase
  {
      private static File testDirectory = new File( getBasedir(), "target/test-classes/" );
  
      public void testBasic()
          throws Exception
      {
          File basicProp = new File( testDirectory, "basic.properties" );
  
          if ( basicProp.exists() )
          {
              basicProp.delete();
          }
  
          basicProp.createNewFile();
          try ( FileWriter writer = new FileWriter( basicProp ) )
          {
              writer.write( "ghost=${non_existent}\n" );
              writer.write( "key=${untat_na_damgo}\n" );
              writer.write( "untat_na_damgo=gani_man\n" );
              writer.flush();
          }
  
          Properties prop = PropertyUtils.loadPropertyFile( basicProp, false, false );
          assertTrue( prop.getProperty( "key" ).equals( "gani_man" ) );
          assertTrue( prop.getProperty( "ghost" ).equals( "${non_existent}" ) );
      }
  
      public void testSystemProperties()
          throws Exception
      {
          File systemProp = new File( testDirectory, "system.properties" );
  
          if ( systemProp.exists() )
          {
              systemProp.delete();
          }
  
          systemProp.createNewFile();
          try ( FileWriter writer = new FileWriter( systemProp ) )
          {
              writer.write( "key=${user.dir}" );
              writer.flush();
          }
  
          Properties prop = PropertyUtils.loadPropertyFile( systemProp, false, true );
          assertTrue( prop.getProperty( "key" ).equals( System.getProperty( "user.dir" ) ) );
      }
  
      public void testException()
          throws Exception
      {
          File nonExistent = new File( testDirectory, "not_existent_file" );
  
          assertFalse( "property file exist: " + nonExistent.toString(), nonExistent.exists() );
  
          try
          {
              PropertyUtils.loadPropertyFile( nonExistent, true, false );
              assertTrue( "Exception failed", false );
          }
          catch ( Exception ex )
          {
             // exception ok
         }
     }
 
     public void testloadpropertiesFile()
         throws Exception
     {
         File propertyFile = new File( getBasedir() + "/src/test/units-files/propertyutils-test.properties" );
         Properties baseProps = new Properties();
         baseProps.put( "pom.version", "realVersion" );
 
         Properties interpolated = PropertyUtils.loadPropertyFile( propertyFile, baseProps );
         assertEquals( "realVersion", interpolated.get( "version" ) );
         assertEquals( "${foo}", interpolated.get( "foo" ) );
         assertEquals( "realVersion", interpolated.get( "bar" ) );
         assertEquals( "none filtered", interpolated.get( "none" ) );
     }
 
     /**
      * Test case to reproduce MSHARED-417
      *
      * @throws IOException if problem writing file
      */
     public void testCircularReferences()
         throws IOException
     {
         File basicProp = new File( testDirectory, "circular.properties" );
 
         if ( basicProp.exists() )
         {
             basicProp.delete();
         }
 
         basicProp.createNewFile();
         try( FileWriter writer = new FileWriter( basicProp ) )
         {
             writer.write( "test=${test2}\n" );
             writer.write( "test2=${test2}\n" );
             writer.flush();
         }
 
         MockLogger logger = new MockLogger();
 
         Properties prop = PropertyUtils.loadPropertyFile( basicProp, null, logger );
         assertEquals( "${test2}", prop.getProperty( "test" ) );
         assertEquals( "${test2}", prop.getProperty( "test2" ) );
         assertEquals( 2, logger.warnMsgs.size() );
         assertWarn( "Circular reference between properties detected: test2 => test2", logger );
         assertWarn( "Circular reference between properties detected: test => test2 => test2", logger );
     }
 
     /**
      * Test case to reproduce MSHARED-417
      *
      * @throws IOException if problem writing file
      */
     public void testCircularReferences3Vars()
         throws IOException
     {
         File basicProp = new File( testDirectory, "circular.properties" );
 
         if ( basicProp.exists() )
         {
             basicProp.delete();
         }
 
         basicProp.createNewFile();
         try ( FileWriter writer = new FileWriter( basicProp ) )
         {
             writer.write( "test=${test2}\n" );
             writer.write( "test2=${test3}\n" );
             writer.write( "test3=${test}\n" );
             writer.flush();
         }
 
         MockLogger logger = new MockLogger();
 
         Properties prop = PropertyUtils.loadPropertyFile( basicProp, null, logger );
         assertEquals( "${test2}", prop.getProperty( "test" ) );
         assertEquals( "${test3}", prop.getProperty( "test2" ) );
         assertEquals( "${test}", prop.getProperty( "test3" ) );
         assertEquals( 3, logger.warnMsgs.size() );
         assertWarn( "Circular reference between properties detected: test3 => test => test2 => test3", logger );
         assertWarn( "Circular reference between properties detected: test2 => test3 => test => test2", logger );
         assertWarn( "Circular reference between properties detected: test => test2 => test3 => test", logger );
     }
 
     private void assertWarn( String expected, MockLogger logger )
     {
         assertTrue( logger.warnMsgs.contains( expected ) );
     }
 
     private static class MockLogger
         implements Logger
     {
 
         ArrayList<String> warnMsgs = new ArrayList<>();
 
         @Override
         public void debug( String message )
         {
             // nothing
         }
 
         @Override
         public void debug( String message, Throwable throwable )
         {
             // nothing
         }
 
         @Override
         public boolean isDebugEnabled()
         {
             return false;
         }
 
         @Override
         public void info( String message )
         {
             // nothing
         }
 
         @Override
         public void info( String message, Throwable throwable )
         {
             // nothing
         }
 
         @Override
         public boolean isInfoEnabled()
         {
             return false;
         }
 
         @Override
         public void warn( String message )
         {
             warnMsgs.add( message );
         }
 
         @Override
         public void warn( String message, Throwable throwable )
         {
             // nothing
         }
 
         @Override
         public boolean isWarnEnabled()
         {
             return false;
         }
 
         @Override
         public void error( String message )
         {
             // nothing
         }
 
         @Override
         public void error( String message, Throwable throwable )
         {
             // nothing
         }
 
         @Override
         public boolean isErrorEnabled()
         {
             return false;
         }
 
         @Override
         public void fatalError( String message )
         {
             // nothing
         }
 
         @Override
         public void fatalError( String message, Throwable throwable )
         {
             // nothing
         }
 
         @Override
         public boolean isFatalErrorEnabled()
         {
             return false;
         }
 
         @Override
         public int getThreshold()
         {
             return 0;
         }
 
         @Override
         public void setThreshold( int threshold )
         {
             // nothing
         }
 
         @Override
         public Logger getChildLogger( String name )
         {
             return null;
         }
 
         @Override
         public String getName()
         {
             return null;
         }
     }
 }