package org.apache.velocity.test;
   
   /*
    * 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.BufferedWriter;
  import java.io.FileOutputStream;
  import java.io.OutputStreamWriter;
  import java.io.Writer;
  
  import junit.framework.Test;
  import junit.framework.TestSuite;
  
  import org.apache.velocity.Template;
  import org.apache.velocity.VelocityContext;
  import org.apache.velocity.app.Velocity;
  import org.apache.velocity.app.event.EventCartridge;
  import org.apache.velocity.app.event.IncludeEventHandler;
  import org.apache.velocity.context.Context;
  import org.apache.velocity.runtime.RuntimeServices;
  import org.apache.velocity.runtime.RuntimeSingleton;
  import org.apache.velocity.runtime.log.NullLogChute;
  import org.apache.velocity.util.RuntimeServicesAware;
  
  /**
   *  Tests event handling
   *
   * @author <a href="mailto:geirm@optonline.net">Geir Magnusson Jr.</a>
   * @version $Id: IncludeEventHandlingTestCase.java 477002 2006-11-20 01:07:43Z henning $
   */
  public class IncludeEventHandlingTestCase extends BaseTestCase implements IncludeEventHandler,RuntimeServicesAware
  {
  
       /**
       * VTL file extension.
       */
      private static final String TMPL_FILE_EXT = "vm";
  
      /**
       * Comparison file extension.
       */
      private static final String CMP_FILE_EXT = "cmp";
  
      /**
       * Comparison file extension.
       */
      private static final String RESULT_FILE_EXT = "res";
  
      /**
       * Path for templates. This property will override the
       * value in the default velocity properties file.
       */
      private final static String FILE_RESOURCE_LOADER_PATH = TEST_COMPARE_DIR + "/includeevent";
  
      /**
       * Results relative to the build directory.
       */
      private static final String RESULTS_DIR = TEST_RESULT_DIR + "/includeevent";
  
      /**
       * Results relative to the build directory.
       */
      private static final String COMPARE_DIR = TEST_COMPARE_DIR + "/includeevent/compare";
  
  
      private static final int PASS_THROUGH=0;
      private static final int RELATIVE_PATH=1;
      private static final int BLOCK=2;
  
      private int EventHandlerBehavior = PASS_THROUGH;
  
      /**
       * Default constructor.
       */
      public IncludeEventHandlingTestCase(String name)
      {
          super(name);
      }
  
      public void setUp()
              throws Exception
      {
          assureResultsDirectoryExists(RESULTS_DIR);
 
         Velocity.addProperty(
             Velocity.FILE_RESOURCE_LOADER_PATH, FILE_RESOURCE_LOADER_PATH);
 
         Velocity.setProperty(
                 Velocity.RUNTIME_LOG_LOGSYSTEM_CLASS, NullLogChute.class.getName());
 
         Velocity.init();
 
 
     }
 
 
     public static Test suite ()
     {
         return new TestSuite(IncludeEventHandlingTestCase.class);
     }
 
     /**
      * Runs the test.
      */
     public void testIncludeEventHandling ()
             throws Exception
     {
         Template template1 = RuntimeSingleton.getTemplate(
             getFileName(null, "test1", TMPL_FILE_EXT));
 
         Template template2 = RuntimeSingleton.getTemplate(
             getFileName(null, "subdir/test2", TMPL_FILE_EXT));
 
         Template template3 = RuntimeSingleton.getTemplate(
             getFileName(null, "test3", TMPL_FILE_EXT));
 
         FileOutputStream fos1 =
             new FileOutputStream (
                 getFileName(RESULTS_DIR, "test1", RESULT_FILE_EXT));
 
         FileOutputStream fos2 =
             new FileOutputStream (
                 getFileName(RESULTS_DIR, "test2", RESULT_FILE_EXT));
 
         FileOutputStream fos3 =
             new FileOutputStream (
                 getFileName(RESULTS_DIR, "test3", RESULT_FILE_EXT));
 
         Writer writer1 = new BufferedWriter(new OutputStreamWriter(fos1));
         Writer writer2 = new BufferedWriter(new OutputStreamWriter(fos2));
         Writer writer3 = new BufferedWriter(new OutputStreamWriter(fos3));
 
         /*
          *  lets make a Context and add the event cartridge
          */
 
         Context context = new VelocityContext();
 
         /*
          *  Now make an event cartridge, register the
          *  input event handler and attach it to the
          *  Context
          */
 
         EventCartridge ec = new EventCartridge();
         ec.addEventHandler(this);
         ec.attachToContext( context );
 
 
         // BEHAVIOR A: pass through #input and #parse with no change
         EventHandlerBehavior = PASS_THROUGH;
 
         template1.merge(context, writer1);
         writer1.flush();
         writer1.close();
 
         // BEHAVIOR B: pass through #input and #parse with using a relative path
         EventHandlerBehavior = RELATIVE_PATH;
 
         template2.merge(context, writer2);
         writer2.flush();
         writer2.close();
 
         // BEHAVIOR C: refuse to pass through #input and #parse
         EventHandlerBehavior = BLOCK;
 
         template3.merge(context, writer3);
         writer3.flush();
         writer3.close();
 
         if (!isMatch(RESULTS_DIR, COMPARE_DIR, "test1",
                 RESULT_FILE_EXT, CMP_FILE_EXT) ||
             !isMatch(RESULTS_DIR, COMPARE_DIR, "test2",
                 RESULT_FILE_EXT, CMP_FILE_EXT) ||
             !isMatch(RESULTS_DIR, COMPARE_DIR, "test3",
                 RESULT_FILE_EXT, CMP_FILE_EXT)
                 )
         {
             fail("Output incorrect.");
         }
     }
 
 
     public void setRuntimeServices( RuntimeServices rs )
      {
      }
 
     /**
      * Sample handler with different behaviors for the different tests.
      */
     public String includeEvent( String includeResourcePath, String currentResourcePath, String directiveName)
     {
         if (EventHandlerBehavior == PASS_THROUGH)
             return includeResourcePath;
 
 
         // treat as relative path
         else if (EventHandlerBehavior == RELATIVE_PATH)
         {
             // if the resource name starts with a slash, it's not a relative path
             if (includeResourcePath.startsWith("/") || includeResourcePath.startsWith("\\") ) {
                 return includeResourcePath;
             }
 
             int lastslashpos = Math.max(
                     currentResourcePath.lastIndexOf("/"),
                     currentResourcePath.lastIndexOf("\\")
                     );
 
             // root of resource tree
             if ( (lastslashpos == -1))
                 return includeResourcePath;
 
             // prepend path to the input path
             else
                 return currentResourcePath.substring(0,lastslashpos) + "/" + includeResourcePath;
 
 
 
         } else if (EventHandlerBehavior == BLOCK)
             return null;
 
         // should never happen
         else
             return null;
 
 
     }
 
 
 }