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 org.junit.Ignore;
  import org.junit.runner.Description;
  
  import java.lang.annotation.Annotation;
  import java.lang.reflect.Method;
  
  import static org.apache.maven.surefire.util.ReflectionUtils.invokeMethodWithArray;
  import static org.apache.maven.surefire.util.ReflectionUtils.getMethod;
  import static org.apache.maven.surefire.util.ReflectionUtils.tryGetMethod;
  
  /**
   * JUnit4 reflection helper
   *
   */
  public final class JUnit4Reflector
  {
      private static final Class[] PARAMS = { Class.class };
  
      private static final Object[] IGNORE_PARAMS = { Ignore.class };
  
      private static final Class[] PARAMS_WITH_ANNOTATIONS = { String.class, Annotation[].class };
  
      private JUnit4Reflector()
      {
          throw new IllegalStateException( "not instantiable constructor" );
      }
  
      public static Ignore getAnnotatedIgnore( Description d )
      {
          Method getAnnotation = tryGetMethod( d.getClass(), "getAnnotation", PARAMS );
          return getAnnotation == null ? null : (Ignore) invokeMethodWithArray( d, getAnnotation, IGNORE_PARAMS );
      }
  
      static String getAnnotatedIgnoreValue( Description description )
      {
          final Ignore ignore = getAnnotatedIgnore( description );
          return ignore != null ? ignore.value() : null;
      }
  
      public static Description createDescription( String description )
      {
          try
          {
              return Description.createSuiteDescription( description );
          }
          catch ( NoSuchMethodError e )
          {
              Method method = getMethod( Description.class, "createSuiteDescription", PARAMS_WITH_ANNOTATIONS );
              // may throw exception probably with broken JUnit 4.x
              return (Description) invokeMethodWithArray( null, method, description, new Annotation[0] );
          }
      }
  
      public static Description createDescription( String description, Annotation... annotations )
      {
          Method method = tryGetMethod( Description.class, "createSuiteDescription", PARAMS_WITH_ANNOTATIONS );
          return method == null
              ? Description.createSuiteDescription( description )
              : (Description) invokeMethodWithArray( null, method, description, annotations );
      }
  
      public static Ignore createIgnored( String value )
      {
          return new IgnoredWithUserError( value );
      }
  
      @SuppressWarnings( "ClassExplicitlyAnnotation" )
      private static class IgnoredWithUserError
          implements Annotation, Ignore
      {
          private final String value;
  
          IgnoredWithUserError( String value )
          {
              this.value = value;
          }
  
          @Override
         public String value()
         {
             return value;
         }
 
         @Override
         public Class<? extends Annotation> annotationType()
         {
             return Ignore.class;
         }
 
         @Override
         public int hashCode()
         {
             return value == null ? 0 : value.hashCode();
         }
 
         @Override
         public boolean equals( Object obj )
         {
             return obj instanceof Ignore && equalValue( ( Ignore ) obj );
         }
 
         @Override
         public String toString()
         {
             return String.format( "%s(%s)", Ignore.class, value );
         }
 
         private boolean equalValue( Ignore ignore )
         {
             return ignore != null && ignore.value().equals( value );
         }
     }
 }