/*
    * Copyright 2010 Fraunhofer Gesellschaft, Munich, Germany,
    * for its Fraunhofer Institute for Computer Architecture and Software
    * Technology (FIRST), Berlin, Germany. All rights reserved.
    * http://www.first.fraunhofer.de/
    */
   
   package net.kwfgrid.gwes;
   
  import junit.framework.Test;
  import junit.framework.TestSuite;
  import junit.framework.Assert;
  import net.kwfgrid.gwes.exception.LoggingException;
  import org.apache.log4j.Logger;
  import org.jaxen.JaxenException;
  import org.jaxen.SimpleNamespaceContext;
  import org.jaxen.NamespaceContext;
  import org.jdom.Element;
  import org.jdom.Document;
  import net.kwfgrid.gworkflowdl.structure.JdomString;
  
  import java.io.IOException;
  
  /**
   * <code>
   * maven -Dtestcase=net.kwfgrid.gwes.ConditionCheckerTest test:single
   * </code>
   *
   * @author Andreas Hoheisel
   *         (<a href="http://www.andreas-hoheisel.de">www.andreas-hoheisel.de</a>)
   * @version $Id: ConditionCheckerTest.java 1529 2011-06-22 16:37:19Z hoheisel $
   */
  public final class ConditionCheckerTest extends LocalGWESAbstractTestCase {
  
      static Logger logger = Logger.getLogger(ConditionCheckerTest.class);
  
      /**
       * Create the test case.
       *
       * @param testName name of the test case
       */
      public ConditionCheckerTest(String testName) throws LoggingException {
          super(testName);
      }
  
      /**
       * @return the suite of tests being tested
       */
      public static Test suite() {
          return new TestSuite(ConditionCheckerTest.class);
      }
  
      /**
       * *******************************************************************************************
       * Begin of public test classes.
       * ********************************************************************************************
       */
  
      public void testBasicConditions() throws JaxenException {
          boolean ret;
          String condition;
          ret = evaluateCondition(null, null, condition="5 = 5");
          Assert.assertEquals("Return value for '"+condition+"'",true,ret);
  
          ret = evaluateCondition(null, null, condition="5 < 5");
          Assert.assertEquals("Return value for '"+condition+"'",false,ret);
      }
  
      public void testTemporalConditions() throws IOException, JaxenException {
          SimpleNamespaceContext nsContext = new TransitionOccurrence.DefaultNamespaceContext();
          boolean ret;
          String condition;
  
          ret = evaluateCondition(nsContext, null, condition="gwdl:current-dateTimeMs()");
          Assert.assertEquals("Return value for '"+condition+"'",true,ret);
  
          ret = evaluateCondition(nsContext, null, condition="gwdl:ms2second(gwdl:current-dateTimeMs()) < 61");
          Assert.assertEquals("Return value for '"+condition+"'",true,ret);
  
          ret = evaluateCondition(nsContext, null, condition="gwdl:ms2day(gwdl:dateTime2ms('2007-07-20T09:42:45Z')) = 20");
          Assert.assertEquals("Return value for '"+condition+"'",true,ret);
  
          // warning: two hours difference to local time zone! 
          ret = evaluateCondition(nsContext, null, condition="gwdl:ms2hour(gwdl:dateTime2ms('2007-07-20T09:42:45Z')) = 11");
          Assert.assertEquals("Return value for '"+condition+"'",true,ret);
  
          ret = evaluateCondition(nsContext, null, condition="gwdl:ms2minute(gwdl:dateTime2ms('2007-07-20T09:42:45Z')) = 42");
          Assert.assertEquals("Return value for '"+condition+"'",true,ret);
  
          // month = 0..11 !
          ret = evaluateCondition(nsContext, null, condition="gwdl:ms2month(gwdl:dateTime2ms('2007-07-20T09:42:45Z')) = 6");
          Assert.assertEquals("Return value for '"+condition+"'",true,ret);
  
          ret = evaluateCondition(nsContext, null, condition="gwdl:ms2second(gwdl:dateTime2ms('2007-07-20T09:42:45Z')) = 45");
          Assert.assertEquals("Return value for '"+condition+"'",true,ret);
  
          ret = evaluateCondition(nsContext, null, condition="gwdl:ms2year(gwdl:dateTime2ms('2007-07-20T09:42:45Z')) = 2007");
          Assert.assertEquals("Return value for '"+condition+"'",true,ret);
      }
 
     public void testDataConditions() throws IOException, JaxenException {
         SimpleNamespaceContext nsContext = new TransitionOccurrence.DefaultNamespaceContext();
         Element rootElement = new Element("data",JdomString.wfSpace);
         Document context = new Document(rootElement);
         Element v1 = new Element("value1");
         v1.setText("1");
         rootElement.addContent(v1);
         Element v2 = new Element("value2");
         v2.setText("2");
         rootElement.addContent(v2);
         logger.info("context:\n"+JdomString.document2string(context));
 
         boolean ret;
         String condition;
 
         ret = evaluateCondition(nsContext, context, condition="/gwdl:data/value1 = 1");
         Assert.assertEquals("Return value for '"+condition+"'",true,ret);
 
         ret = evaluateCondition(nsContext, context, condition="/gwdl:data/value1 = 2");
         Assert.assertEquals("Return value for '"+condition+"'",false,ret);
 
         ret = evaluateCondition(nsContext, context, condition="/gwdl:data/value1 < /gwdl:data/value2");
         Assert.assertEquals("Return value for '"+condition+"'",true,ret);
         
     }
 
 
     /**
      * *******************************************************************************************
      * End of public test classes.
      * ********************************************************************************************
      */
 
     private boolean evaluateCondition(NamespaceContext nsContext, Document context, String condition) throws JaxenException {
         ConditionChecker checker = new ConditionChecker();
         if (context != null) checker.setContext(context);
         boolean result = checker.check(condition, nsContext);
         logger.info("Evaluation of expression '" + condition + "' returns " + result);
         return result;
     }
 
 }