package org.apache.maven.surefire.junitcore;
   
   /*
    * 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.Iterator;
  import java.util.List;
  import java.util.Map;
  import java.util.concurrent.ConcurrentHashMap;
  import org.apache.maven.surefire.common.junit4.JUnit4RunListenerFactory;
  import org.apache.maven.surefire.common.junit4.JUnit4TestChecker;
  import org.apache.maven.surefire.common.junit48.FilterFactory;
  import org.apache.maven.surefire.common.junit48.JUnit48Reflector;
  import org.apache.maven.surefire.providerapi.AbstractProvider;
  import org.apache.maven.surefire.providerapi.ProviderParameters;
  import org.apache.maven.surefire.report.ConsoleLogger;
  import org.apache.maven.surefire.report.ConsoleOutputCapture;
  import org.apache.maven.surefire.report.ConsoleOutputReceiver;
  import org.apache.maven.surefire.report.ReporterException;
  import org.apache.maven.surefire.report.ReporterFactory;
  import org.apache.maven.surefire.report.RunListener;
  import org.apache.maven.surefire.suite.RunResult;
  import org.apache.maven.surefire.testset.TestSetFailedException;
  import org.apache.maven.surefire.util.RunOrderCalculator;
  import org.apache.maven.surefire.util.ScanResult;
  import org.apache.maven.surefire.util.ScannerFilter;
  import org.apache.maven.surefire.util.TestsToRun;
  import org.apache.maven.surefire.util.internal.StringUtils;
  
  import org.junit.runner.manipulation.Filter;
  
  /**
   * @author Kristian Rosenvold
   */
  @SuppressWarnings( { "UnusedDeclaration" } )
  public class JUnitCoreProvider
      extends AbstractProvider
  {
      private final ClassLoader testClassLoader;
  
      private final JUnitCoreParameters jUnitCoreParameters;
  
      private final ScannerFilter scannerFilter;
  
      private final List<org.junit.runner.notification.RunListener> customRunListeners;
  
      private final ProviderParameters providerParameters;
  
      private TestsToRun testsToRun;
  
      private JUnit48Reflector jUnit48Reflector;
  
      private RunOrderCalculator runOrderCalculator;
  
      private String requestedTestMethod;
  
      private final ScanResult scanResult;
  
      public JUnitCoreProvider( ProviderParameters providerParameters )
      {
          this.providerParameters = providerParameters;
          this.testClassLoader = providerParameters.getTestClassLoader();
          this.scanResult = providerParameters.getScanResult();
          this.runOrderCalculator = providerParameters.getRunOrderCalculator();
          this.jUnitCoreParameters = new JUnitCoreParameters( providerParameters.getProviderProperties() );
          this.scannerFilter = new JUnit4TestChecker( testClassLoader );
          this.requestedTestMethod = providerParameters.getTestRequest().getRequestedTestMethod();
  
          customRunListeners =
              JUnit4RunListenerFactory.createCustomListeners( providerParameters.getProviderProperties().getProperty( "listener" ) );
          jUnit48Reflector = new JUnit48Reflector( testClassLoader );
      }
  
      public Boolean isRunnable()
      {
          return Boolean.TRUE;
      }
  
      public Iterator getSuites()
      {
          testsToRun = scanClassPath();
          return testsToRun.iterator();
      }
 
     private boolean isSingleThreaded()
     {
         return !jUnitCoreParameters.isAnyParallelitySelected()
             || ( testsToRun.containsExactly( 1 ) && !jUnitCoreParameters.isParallelMethod() );
     }
 
     public RunResult invoke( Object forkTestSet )
         throws TestSetFailedException, ReporterException
     {
         final String message = jUnitCoreParameters.toString() + "\n";
 
         final ReporterFactory reporterFactory = providerParameters.getReporterFactory();
 
         final ConsoleLogger consoleLogger = providerParameters.getConsoleLogger();
         consoleLogger.info( message );
 
         Filter filter = jUnit48Reflector.isJUnit48Available() ? createJUnit48Filter() : null;
 
         if ( testsToRun == null )
         {
             if ( forkTestSet instanceof TestsToRun )
             {
                 testsToRun = (TestsToRun) forkTestSet;
             }
             else if ( forkTestSet instanceof Class )
             {
                 Class theClass = (Class) forkTestSet;
                 testsToRun = TestsToRun.fromClass( theClass );
             }
             else
             {
                 testsToRun = scanClassPath();
             }
         }
 
         org.junit.runner.notification.RunListener jUnit4RunListener = getRunListener( reporterFactory, consoleLogger );
         customRunListeners.add( 0, jUnit4RunListener );
         JUnitCoreWrapper.execute( testsToRun, jUnitCoreParameters, customRunListeners, filter );
         return reporterFactory.close();
     }
 
     private org.junit.runner.notification.RunListener getRunListener( ReporterFactory reporterFactory,
                                                                       ConsoleLogger consoleLogger )
         throws TestSetFailedException
     {
         org.junit.runner.notification.RunListener jUnit4RunListener;
         if ( isSingleThreaded() )
         {
             NonConcurrentRunListener rm = new NonConcurrentRunListener( reporterFactory.createReporter() );
             ConsoleOutputCapture.startCapture( rm );
             jUnit4RunListener = rm;
         }
         else
         {
             final Map<String, TestSet> testSetMap = new ConcurrentHashMap<String, TestSet>();
 
             RunListener listener =
                 ConcurrentRunListener.createInstance( testSetMap, reporterFactory,
                                                       jUnitCoreParameters.isParallelClasses(),
                                                       jUnitCoreParameters.isParallelBoth(), consoleLogger );
             ConsoleOutputCapture.startCapture( (ConsoleOutputReceiver) listener );
 
             jUnit4RunListener = new JUnitCoreRunListener( listener, testSetMap );
         }
         return jUnit4RunListener;
     }
 
     private Filter createJUnit48Filter()
     {
         final FilterFactory filterFactory = new FilterFactory( testClassLoader );
         Filter groupFilter = filterFactory.createGroupFilter( providerParameters.getProviderProperties() );
         return isMethodFilterSpecified() ? filterFactory.and( groupFilter,
                                                               filterFactory.createMethodFilter( requestedTestMethod ) )
                         : groupFilter;
     }
 
     private TestsToRun scanClassPath()
     {
         final TestsToRun scanned = scanResult.applyFilter( scannerFilter, testClassLoader );
         return runOrderCalculator.orderTestClasses( scanned );
     }
 
     private boolean isMethodFilterSpecified()
     {
         return !StringUtils.isBlank( requestedTestMethod );
     }
 }