package org.apache.maven.surefire.common.junit4;
   
   /*
    * 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.runner.Description;
  import org.junit.runner.manipulation.Filter;
  
  import java.util.ArrayList;
  import java.util.List;
  
  /**
   * Only run test methods in the given failure set.
   *
   * @author mpkorstanje
   */
  public final class MatchDescriptions
      extends Filter
  {
      private final List<Filter> filters = new ArrayList<Filter>();
  
      public MatchDescriptions( Iterable<Description> descriptions )
      {
          for ( Description description : descriptions )
          {
              filters.add( matchDescription( description ) );
          }
      }
  
      @Override
      public boolean shouldRun( Description description )
      {
          for ( Filter filter : filters )
          {
              if ( filter.shouldRun( description ) )
              {
                  return true;
              }
          }
          return false;
      }
  
      @Override
      public String describe()
      {
          StringBuilder description = new StringBuilder( "Matching description " );
          for ( int i = 0; i < filters.size(); i++ )
          {
              description.append( filters.get( i ).describe() );
              if ( i != filters.size() - 1 )
              {
                  description.append( " OR " );
              }
          }
          return description.toString();
      }
  
      private static Filter matchDescription( final Description desiredDescription )
      {
          return new Filter()
          {
              @Override
              public boolean shouldRun( Description description )
              {
                  if ( description.isTest() )
                  {
                      return desiredDescription.equals( description );
                  }
  
                  for ( Description each : description.getChildren() )
                  {
                      if ( shouldRun( each ) )
                      {
                          return true;
                      }
                  }
  
                  return false;
              }
  
              @Override
              public String describe()
              {
                 return String.format( "Method %s", desiredDescription.getDisplayName() );
             }
         };
     }
 }