package org.apache.maven.surefire.junit;
   
   /*
    * 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.lang.reflect.InvocationTargetException;
  import java.lang.reflect.Method;
  import java.lang.reflect.Proxy;
  import org.apache.maven.surefire.common.junit3.JUnit3Reflector;
  import org.apache.maven.surefire.report.RunListener;
  import org.apache.maven.surefire.testset.TestSetFailedException;
  
  /**
   * JUnit3 test set
   *
   */
  public final class JUnitTestSet
      implements SurefireTestSet
  {
      private final Class testClass;
  
      private final JUnit3Reflector reflector;
  
      public JUnitTestSet( Class testClass, JUnit3Reflector reflector )
      {
          if ( testClass == null )
          {
              throw new NullPointerException( "testClass is null" );
          }
  
          this.testClass = testClass;
          this.reflector = reflector;
  
          // ----------------------------------------------------------------------
          // Strategy for executing JUnit tests
          //
          // o look for the suite method and if that is present execute that method
          //   to get the test object.
          //
          // o look for test classes that are assignable from TestCase
          //
          // o look for test classes that only implement the Test interface
          // ----------------------------------------------------------------------
  
          // The interface implemented by the dynamic proxy (TestListener), happens to be
          // the same as the param types of TestResult.addTestListener
      }
  
  
      @Override
      public void execute( RunListener reporter, ClassLoader loader )
          throws TestSetFailedException
      {
          Class testClass = getTestClass();
  
          try
          {
              Object testObject = reflector.constructTestObject( testClass );
              final Method runMethod;
  
              if ( reflector.getTestInterface().isAssignableFrom( testObject.getClass() ) )
              {
                  runMethod = reflector.getTestInterfaceRunMethod();
              }
              else
              {
                  runMethod = reflector.getRunMethod( testClass );
              }
  
              Object instanceOfTestResult = reflector.getTestResultClass().newInstance();
  
              TestListenerInvocationHandler invocationHandler = new TestListenerInvocationHandler( reporter );
  
              Object testListener =
                  Proxy.newProxyInstance( loader, reflector.getInterfacesImplementedByDynamicProxy(), invocationHandler );
  
              Object[] addTestListenerParams = { testListener };
  
              reflector.getAddListenerMethod().invoke( instanceOfTestResult, addTestListenerParams );
  
              Object[] runParams = { instanceOfTestResult };
  
              runMethod.invoke( testObject, runParams );
         }
         catch ( InvocationTargetException e )
         {
             throw new TestSetFailedException( testClass.getName(), e.getTargetException() );
         }
         catch ( NoSuchMethodException e )
         {
             throw new TestSetFailedException( "Class is not a JUnit TestCase", e );
         }
         catch ( ReflectiveOperationException e )
         {
             throw new TestSetFailedException( testClass.getName(), e );
         }
     }
 
     @Override
     public String getName()
     {
         return testClass.getName();
     }
 
     private Class getTestClass()
     {
         return testClass;
     }
 }