/*
    * 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.
   */
  package org.apache.maven.surefire.junit;
  
  import java.lang.reflect.InvocationTargetException;
  import java.lang.reflect.Method;
  import java.lang.reflect.Proxy;
  
  import org.apache.maven.surefire.api.testset.TestSetFailedException;
  import org.apache.maven.surefire.common.junit3.JUnit3Reflector;
  
  /**
   * JUnit3 test set.
   */
  public final class JUnitTestSetExecutor implements SurefireTestSetExecutor {
      private final JUnit3Reflector reflector;
  
      private final JUnit3Reporter reporter;
  
      public JUnitTestSetExecutor(JUnit3Reflector reflector, JUnit3Reporter reporter) {
          this.reflector = reflector;
          this.reporter = reporter;
  
          // ----------------------------------------------------------------------
          // 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(Class<?> testClass, ClassLoader loader) throws TestSetFailedException {
          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);
          }
      }
  }