AbstractClassTestDescriptor.java

/*
** Module   : AbstractClassTestDescriptor.java
** Abstract : Common ancestor for legacy class and legacy procedure test descriptors.
**
** Copyright (c) 2023-2024, Golden Code Development Corporation.
**
** -#- -I- --Date-- ---------------------------------Description---------------------------------
** 001 VVT 20230318 Created initial version.
** 002 VVT 20230428 Source formatting fixed. Printing advanced.
**                  getSource() implementaion added. See #3827-360, item 4.
**                  Full paths to legacy procedures and fully qualified legacy class names are
**                  now used as JUnit5 test display names. See #3827-360, item 3.
**                  Tags support added to FWD engine (FWD extension).
** 003 VVT 20240325 Unused 'test', 'beforeEach' and 'afterEach' constructor parameters removed.
**                  The 'sort() method added. See #8440.
** 004 VVT 20240408 Minor style fixes. See #8406-70.
*/
/*
** This program is free software: you can redistribute it and/or modify
** it under the terms of the GNU Affero General Public License as
** published by the Free Software Foundation, either version 3 of the
** License, or (at your option) any later version.
**
** This program is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
** GNU Affero General Public License for more details.
**
** You may find a copy of the GNU Affero GPL version 3 at the following
** location: https://www.gnu.org/licenses/agpl-3.0.en.html
** 
** Additional terms under GNU Affero GPL version 3 section 7:
** 
**   Under Section 7 of the GNU Affero GPL version 3, the following additional
**   terms apply to the works covered under the License.  These additional terms
**   are non-permissive additional terms allowed under Section 7 of the GNU
**   Affero GPL version 3 and may not be removed by you.
** 
**   0. Attribution Requirement.
** 
**     You must preserve all legal notices or author attributions in the covered
**     work or Appropriate Legal Notices displayed by works containing the covered
**     work.  You may not remove from the covered work any author or developer
**     credit already included within the covered work.
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*/
package com.goldencode.p2j.testengine;

import java.io.*;
import java.lang.reflect.*;
import java.util.*;

import org.junit.platform.engine.*;
import org.junit.platform.engine.support.descriptor.*;

import com.goldencode.p2j.testengine.api.*;
import com.goldencode.p2j.util.*;
import com.goldencode.util.*;

/**
 * Common ancestor for legacy class and legacy procedure test descriptors.
 */
public abstract class AbstractClassTestDescriptor
extends AbstractBranchTestDescriptor
{

   /**
    * Class methods marked to execute after all tests 
    */
   List<Method> afterAll;

   /**
    * Class methods marked to execute before all tests 
    */
   List<Method> beforeAll;

   /**
    * The Java class.
    */
   Class clazz;

   /**
    * Sort methods by the 'order' annotation attribute.
    * 
    * @param methods
    *        the methods to sort
    *        
    * @return an array containing original methods sorted
    */
   protected static final Method[] sort(final List<Method> methods)
   {
      // Order methods by the 'oder' annotation parameter value
      final Method[] ordered = methods.toArray(new Method[methods.size()]);
      Arrays.sort(ordered, Comparator
               .comparingInt(m -> m.getAnnotation(Test.class).order()));
      return ordered;
   }

   /**
    * Default constructor. Required for serialization. Not to be used in application code.
    */
   protected AbstractClassTestDescriptor()
   {
      super(null, null, null);

      this.clazz = null;
      this.beforeAll = null;
      this.afterAll = null;      
   }

   /**
    * The constructor.
    * 
    * @param clazz
    *        the Java class
    * @param displayName
    *        the display name
    * @param parent
    *        the parent descriptor
    * @param beforeAll
    *        class methods marked to execute before all tests  
    * @param afterAll
    *        class methods marked to execute after all tests
    */
   protected AbstractClassTestDescriptor(final Class<?> clazz,
                                         final String displayName,
                                         final TestDescriptor parent,
                                         final List<Method> beforeAll,
                                         final List<Method> afterAll)
   {
      super(parent.getUniqueId().append("class", clazz.getName()), displayName, getTags(clazz));

      this.clazz = clazz;
      this.beforeAll = beforeAll;
      this.afterAll = afterAll;
   }
   
   /**
    * Execute the <em>after</em> behavior of this node implementation.
    * <p>
    * This method will be called once <em>after</em> {@linkplain #executeImpl() execution}
    * of this node.
    */
   @Override
   public void afterImpl()
   throws ErrorConditionException,
          LegacyErrorException
   {
      callLFMethodsImpl(afterAll);
   }

   /**
    * Execute the <em>before</em> behavior of this node implementation.
    * <p>
    * This method will be called once <em>before</em> {@linkplain #executeImpl() execution}
    * of this node.
    */
   @Override
   public void beforeImpl()
   throws ErrorConditionException,
          LegacyErrorException
   {
      callLFMethodsImpl(beforeAll);
   }

   /**
    * Get the {@linkplain TestSource source} of the test or container described
    * by this descriptor, if available.
    * 
    * @see TestSource
    */
   @Override
   public Optional<TestSource> getSource()
   {
      return Optional.of(ClassSource.from(clazz));
   }

   /**
    * Print all class-specific fields.
    * 
    * @param printer
    *        the string printer to print into
    */
   @Override
   public void print(final PrintHelper printer)
   {
      printer.print(clazz.getName());
      
      if (!beforeAll.isEmpty())
      {
         printer.print("beforeAll", beforeAll.size());
      }
      
      if (!afterAll.isEmpty())
      {
         printer.print("afterAll", afterAll.size());
      }
   }

   /**
    * The object implements the readExternal method to restore its
    * contents by calling the methods of DataInput for primitive
    * types and readObject for objects, strings and arrays.  The
    * readExternal method must read the values in the same sequence
    * and with the same types as were written by writeExternal.
    * 
    * @param     in the stream to read data from in order to restore the object
    * 
    * @exception IOException if I/O errors occur
    * @exception ClassNotFoundException If the class for an object being
    *            restored cannot be found.
    */
   @Override
   public void readExternal(ObjectInput in)
   throws IOException,
          ClassNotFoundException
   {
      super.readExternal(in);
      
      clazz = (Class<?>) in.readObject();
      beforeAll = SerializationSupport.readMethods(in);
      afterAll = SerializationSupport.readMethods(in);
   }

   /**
    * The object implements the writeExternal method to save its contents
    * by calling the methods of DataOutput for its primitive values or
    * calling the writeObject method of ObjectOutput for objects, strings,
    * and arrays.
    * 
    * @serialData Overriding methods should use this tag to describe
    *             the data layout of this Externalizable object.
    *             List the sequence of element types and, if possible,
    *             relate the element to a public/protected field and/or
    *             method of this Externalizable class.
    * 
    * @param      out the stream to write the object to
    * 
    * @exception  IOException Includes any I/O exceptions that may occur
    */
   @Override
   public void writeExternal(ObjectOutput out)
   throws IOException
   {
      super.writeExternal(out);
      
      out.writeObject(clazz);
      SerializationSupport.writeMethods(beforeAll, out);
      SerializationSupport.writeMethods(afterAll, out);
   }

}