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 java.util.regex.Matcher;
  import java.util.regex.Pattern;
  
  import org.apache.maven.surefire.report.ReportEntry;
  import org.apache.maven.surefire.report.RunListener;
  import org.apache.maven.surefire.report.SimpleReportEntry;
  import org.apache.maven.surefire.report.StackTraceWriter;
  import org.apache.maven.surefire.testset.TestSetFailedException;
  
  import org.junit.runner.Description;
  import org.junit.runner.Result;
  import org.junit.runner.notification.Failure;
  
  public class JUnit4RunListener
      extends org.junit.runner.notification.RunListener
  {
      private static final Pattern PARENS = Pattern.compile( "^" + ".+" //any character
                                                                 + "\\(("
                                                                 // then an open-paren (start matching a group)
                                                                 + "[^\\\\(\\\\)]+" //non-parens
                                                                 + ")\\)" + "$" );
      // then a close-paren (end group match)
  
      protected final RunListener reporter;
  
      /**
       * This flag is set after a failure has occurred so that a <code>testSucceeded</code> event is not fired.
       * This is necessary because JUnit4 always fires a <code>testRunFinished</code> event-- even if there was a failure.
       */
      private final ThreadLocal<Boolean> failureFlag = new InheritableThreadLocal<Boolean>();
  
      private final JUnit4Reflector jUnit4Reflector = new JUnit4Reflector();
  
      /**
       * Constructor.
       *
       * @param reporter the reporter to log testing events to
       */
      public JUnit4RunListener( RunListener reporter )
      {
          this.reporter = reporter;
      }
  
      // Testrun methods are not invoked when using the runner
  
      /**
       * Called when a specific test has been skipped (for whatever reason).
       *
       * @see org.junit.runner.notification.RunListener#testIgnored(org.junit.runner.Description)
       */
      public void testIgnored( Description description )
          throws Exception
      {
          final String reason = jUnit4Reflector.getAnnotatedIgnoreValue( description );
          final SimpleReportEntry report =
              SimpleReportEntry.ignored( getClassName( description ), description.getDisplayName(), reason );
          reporter.testSkipped( report );
      }
  
      /**
       * Called when a specific test has started.
       *
       * @see org.junit.runner.notification.RunListener#testStarted(org.junit.runner.Description)
       */
      public void testStarted( Description description )
          throws Exception
      {
          reporter.testStarting( createReportEntry( description ) );
          failureFlag.remove();
      }
  
      /**
       * Called when a specific test has failed.
       *
       * @see org.junit.runner.notification.RunListener#testFailure(org.junit.runner.notification.Failure)
       */
      @SuppressWarnings( { "ThrowableResultOfMethodCallIgnored" } )
      public void testFailure( Failure failure )
         throws Exception
     {
         String testHeader = failure.getTestHeader();
         if ( isInsaneJunitNullString( testHeader ) )
         {
             testHeader = "Failure when constructing test";
         }
         ReportEntry report = SimpleReportEntry.withException( getClassName( failure.getDescription() ), testHeader,
                                                               createStackTraceWriter( failure ) );
 
         if ( failure.getException() instanceof AssertionError )
         {
             this.reporter.testFailed( report );
         }
         else
         {
             this.reporter.testError( report );
         }
         failureFlag.set( Boolean.TRUE );
     }
 
     protected StackTraceWriter createStackTraceWriter( Failure failure )
     {
         return new JUnit4StackTraceWriter( failure );
     }
 
     @SuppressWarnings( { "UnusedDeclaration" } )
     public void testAssumptionFailure( Failure failure )
     {
         this.reporter.testAssumptionFailure( createReportEntry( failure.getDescription() ) );
         failureFlag.set( Boolean.TRUE );
     }
 
 
     /**
      * Called after a specific test has finished.
      *
      * @see org.junit.runner.notification.RunListener#testFinished(org.junit.runner.Description)
      */
     public void testFinished( Description description )
         throws Exception
     {
         Boolean failure = failureFlag.get();
         if ( failure == null )
         {
             reporter.testSucceeded( createReportEntry( description ) );
         }
     }
 
     protected SimpleReportEntry createReportEntry( Description description )
     {
         return new SimpleReportEntry( getClassName( description ), description.getDisplayName() );
     }
 
     public String getClassName( Description description )
     {
         String name = extractClassName( description );
         if ( name == null || isInsaneJunitNullString( name ) )
         {
             // This can happen upon early failures (class instantiation error etc)
             Description subDescription = description.getChildren().get( 0 );
             if ( subDescription != null )
             {
                 name = extractClassName( subDescription );
             }
             if ( name == null )
             {
                 name = "Test Instantiation Error";
             }
         }
         return name;
     }
 
     private boolean isInsaneJunitNullString( String value )
     {
         return "null".equals( value );
     }
 
     public static String extractClassName( Description description )
     {
         String displayName = description.getDisplayName();
         Matcher m = PARENS.matcher( displayName );
         if ( !m.find() )
         {
             return displayName;
         }
         return m.group( 1 );
     }
 
 
     public static void rethrowAnyTestMechanismFailures( Result run )
         throws TestSetFailedException
     {
         if ( run.getFailureCount() > 0 )
         {
             for ( Failure failure : run.getFailures() )
             {
                 if ( isFailureInsideJUnitItself( failure ) )
                 {
                     final Throwable exception = failure.getException();
                     throw new TestSetFailedException( exception );
                 }
             }
         }
     }
 
     private static boolean isFailureInsideJUnitItself( Failure failure )
     {
         return failure.getDescription().getDisplayName().equals( "Test mechanism" );
     }
 }