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.apache.maven.surefire.util.TestsToRun;
  import org.apache.maven.surefire.util.internal.StringUtils;
  
  import java.util.Collection;
  import java.util.HashMap;
  import java.util.HashSet;
  import java.util.List;
  import java.util.Map;
  import java.util.Set;
  
  import org.junit.runner.Description;
  import org.junit.runner.notification.Failure;
  
  import static org.apache.maven.surefire.common.junit4.JUnit4RunListener.isFailureInsideJUnitItself;
  
  /**
   *
   * Utility method used among all JUnit4 providers
   *
   * @author Qingzhou Luo
   *
   */
  public class JUnit4ProviderUtil
  {
      /**
       * Organize all the failures in previous run into a map between test classes and corresponding failing test methods
       *
       * @param allFailures all the failures in previous run
       * @param testsToRun  all the test classes
       * @return a map between failing test classes and their corresponding failing test methods
       */
      public static Map<Class<?>, Set<String>> generateFailingTests( List<Failure> allFailures, TestsToRun testsToRun )
      {
          Map<Class<?>, Set<String>> testClassMethods = new HashMap<Class<?>, Set<String>>();
  
          for ( Failure failure : allFailures )
          {
              if ( !isFailureInsideJUnitItself( failure ) )
              {
                  // failure.getTestHeader() is in the format: method(class)
                  String[] testMethodClass = StringUtils.split( failure.getTestHeader(), "(" );
                  String testMethod = testMethodClass[0];
                  String testClass = StringUtils.split( testMethodClass[1], ")" )[0];
                  Class testClassObj = testsToRun.getClassByName( testClass );
  
                  if ( testClassObj == null )
                  {
                      continue;
                  }
  
                  Set<String> failingMethods = testClassMethods.get( testClassObj );
                  if ( failingMethods == null )
                  {
                      failingMethods = new HashSet<String>();
                      failingMethods.add( testMethod );
                      testClassMethods.put( testClassObj, failingMethods );
                  }
                  else
                  {
                      failingMethods.add( testMethod );
                  }
              }
          }
          return testClassMethods;
      }
  
      /**
       * Get the name of all test methods from a list of Failures
       *
       * @param allFailures the list of failures for a given test class
       * @return the list of test method names
       */
      public static Set<String> generateFailingTests( List<Failure> allFailures )
      {
          Set<String> failingMethods = new HashSet<String>();
  
          for ( Failure failure : allFailures )
          {
             if ( !isFailureInsideJUnitItself( failure ) )
             {
                 // failure.getTestHeader() is in the format: method(class)
                 String testMethod = StringUtils.split( failure.getTestHeader(), "(" )[0];
                 failingMethods.add( testMethod );
             }
         }
         return failingMethods;
     }
 
     public static Description createSuiteDescription( Collection<Class<?>> classes )
     {
         JUnit4Reflector reflector = new JUnit4Reflector();
         return reflector.createRequest( classes.toArray( new Class[classes.size()] ) )
                 .getRunner()
                 .getDescription();
     }
 
 }