package org.apache.archiva.test.utils;
   
   /*
    * Copyright 2012 The Apache Software Foundation.
    *
    * Licensed 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.runners.model.FrameworkMethod;
  
  import java.util.ArrayList;
  import java.util.Collections;
  import java.util.List;
  
  /**
   * Generator of list of random test method
   * -Dorg.apache.archiva.test=n
   * n<=0 default jdk behavior
   * n>0 number of round of random collection
   *
   * @author Eric
   */
  public class ListGenerator
  {
      private static int MAXROUND = 10;
  
      private ListGenerator()
      {
      }
  
      static List<FrameworkMethod> getShuffleList( List<FrameworkMethod> computeTestMethods )
      {
          int testRound;
          try
          {
              testRound = Integer.valueOf( System.getProperty( "org.apache.archiva.test", "0" ) );
          }
          catch ( NumberFormatException nfe )
          {
              testRound = 0;
          }
          if ( testRound <= 0 ) // default list usage
          {
              return computeTestMethods;
          }
          if ( computeTestMethods == null )
          {
              return null;
          }
  
          List<FrameworkMethod> generated = new ArrayList<>();
  
          testRound = Math.min( MAXROUND, testRound );
  
          for ( int i = 0; i < testRound; i++ )
          {
              Collections.shuffle( computeTestMethods );
              generated.addAll( computeTestMethods );
          }
          // Collections.sort( generated, new FrameworkMethodComparator() );
  
          return generated;
      }
  
      /*private static class FrameworkMethodComparator
          implements Comparator<FrameworkMethod>
      {
          public int compare( FrameworkMethod frameworkMethod, FrameworkMethod frameworkMethod1 )
          {
              return frameworkMethod.getName().compareTo( frameworkMethod1.getName() );
          }
      }*/
  
  }