package org.apache.maven.index.util;
   
   /*
    * 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.util.ArrayList;
  import java.util.Arrays;
  import java.util.List;
  
  import org.apache.maven.index.context.IndexCreator;
  import org.codehaus.plexus.PlexusTestCase;
  import org.junit.Assert;
  
  public class IndexCreatorSorterTest
      extends PlexusTestCase
  {
      public void testLookupList()
          throws Exception
      {
          final List<IndexCreator> creators = getContainer().lookupList( IndexCreator.class );
  
          final List<IndexCreator> sortedCreators = IndexCreatorSorter.sort( creators );
  
          // we are interested in IDs only
          final List<String> sortedCreatorIds = new ArrayList<String>();
          for ( IndexCreator creator : sortedCreators )
          {
              sortedCreatorIds.add( creator.getId() );
          }
  
          // ensure we fulfil some basic conditions
          Assert.assertTrue( "min should be present", sortedCreatorIds.contains( "min" ) );
          Assert.assertTrue( "maven-plugin should be present", sortedCreatorIds.contains( "maven-plugin" ) );
          Assert.assertTrue( "maven-archetype should be present", sortedCreatorIds.contains( "maven-archetype" ) );
  
          // currently, both "maven-plugin" and "maven-archetype" creator depend on "min" creator
          Assert.assertTrue( "maven-archetype depends on min",
              sortedCreatorIds.indexOf( "min" ) < sortedCreatorIds.indexOf( "maven-archetype" ) );
          Assert.assertTrue( "maven-plugin depends on min",
              sortedCreatorIds.indexOf( "min" ) < sortedCreatorIds.indexOf( "maven-plugin" ) );
      }
  
      public void testLookupListWithSpoofedCreator()
          throws Exception
      {
          final List<IndexCreator> creators =
              new ArrayList<IndexCreator>( getContainer().lookupList( IndexCreator.class ) );
  
          // now we add spoofs to it, this one depends on ALL creators. Note: we add it as 1st intentionally
          creators.add( 0,
              new SpoofIndexCreator( "depend-on-all", new ArrayList<String>(
                  getContainer().lookupMap( IndexCreator.class ).keySet() ) ) );
  
          // now we add spoofs to it, this one depends on only one, the "depend-on-all" creator Note: we add it as 1st
          // intentionally
          creators.add( 0, new SpoofIndexCreator( "last", Arrays.asList( "depend-on-all" ) ) );
  
          final List<IndexCreator> sortedCreators = IndexCreatorSorter.sort( creators );
  
          // we are interested in IDs only
          final List<String> sortedCreatorIds = new ArrayList<String>();
          for ( IndexCreator creator : sortedCreators )
          {
              sortedCreatorIds.add( creator.getId() );
          }
  
          // ensure we fulfil some basic conditions
          Assert.assertTrue( "min should be present", sortedCreatorIds.contains( "min" ) );
          Assert.assertTrue( "maven-plugin should be present", sortedCreatorIds.contains( "maven-plugin" ) );
          Assert.assertTrue( "maven-archetype should be present", sortedCreatorIds.contains( "maven-archetype" ) );
          Assert.assertTrue( "depend-on-all should be present", sortedCreatorIds.contains( "depend-on-all" ) );
          Assert.assertTrue( "last should be present", sortedCreatorIds.contains( "last" ) );
  
          // "last" has to be last
          Assert.assertTrue( "last creator should be last",
              sortedCreatorIds.indexOf( "last" ) == sortedCreatorIds.size() - 1 );
          Assert.assertTrue( "depend-on-all should be next to last",
              sortedCreatorIds.indexOf( "depend-on-all" ) == sortedCreatorIds.size() - 2 );
      }
  
      public void testLookupListWithNonExistentCreatorDependency()
          throws Exception
      {
         final List<IndexCreator> creators =
             new ArrayList<IndexCreator>( getContainer().lookupList( IndexCreator.class ) );
 
         // now we add spoofs to it, this one depends on non existent creator. Note: we add it as 1st intentionally
         creators.add( 0,
             new SpoofIndexCreator( "non-satisfyable", Arrays.asList( "this-creator-i-depend-on-does-not-exists" ) ) );
 
         try
         {
             final List<IndexCreator> sortedCreators = IndexCreatorSorter.sort( creators );
 
             Assert.fail( "IndexCreator list is not satisfyable!" );
         }
         catch ( IllegalArgumentException e )
         {
             // good, check message
             final String message = e.getMessage();
 
             Assert.assertTrue( "Exception message should mention the problematic creator's ID",
                 message.contains( "non-satisfyable" ) );
             Assert.assertTrue( "Exception message should mention the missing creator's ID",
                 message.contains( "this-creator-i-depend-on-does-not-exists" ) );
         }
     }
 }