/*
    * 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.common.junit48;
  
  import org.apache.maven.surefire.api.filter.NonAbstractClassFilter;
  import org.apache.maven.surefire.api.util.ScannerFilter;
  import org.apache.maven.surefire.common.junit4.JUnit4TestChecker;
  import org.junit.experimental.runners.Enclosed;
  
  /**
   * Looks for additional junit48-like features.
   *
   * @author Geoff Denning
   * @author Kristian Rosenvold
   */
  public class JUnit48TestChecker implements ScannerFilter {
      private final NonAbstractClassFilter nonAbstractClassFilter;
  
      private final JUnit4TestChecker jUnit4TestChecker;
  
      public JUnit48TestChecker(ClassLoader testClassLoader) {
          this.jUnit4TestChecker = new JUnit4TestChecker(testClassLoader);
          this.nonAbstractClassFilter = new NonAbstractClassFilter();
      }
  
      @Override
      public boolean accept(Class testClass) {
          return jUnit4TestChecker.accept(testClass) || isAbstractWithEnclosedRunner(testClass);
      }
  
      @SuppressWarnings({"unchecked"})
      private boolean isAbstractWithEnclosedRunner(Class testClass) {
          return jUnit4TestChecker.isRunWithPresentInClassLoader()
                  && isAbstract(testClass)
                  && isRunWithEnclosedRunner(testClass);
      }
  
      private boolean isRunWithEnclosedRunner(Class testClass) {
          @SuppressWarnings("unchecked")
          org.junit.runner.RunWith runWithAnnotation =
                  (org.junit.runner.RunWith) testClass.getAnnotation(org.junit.runner.RunWith.class);
          return (runWithAnnotation != null && Enclosed.class.equals(runWithAnnotation.value()));
      }
  
      private boolean isAbstract(Class testClass) {
          return !nonAbstractClassFilter.accept(testClass);
      }
  }