wfp13miwithoutsynchronizationtest.java

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 *
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 * published by the Free Software Foundation; either version 2.1 of
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 *
 * This software 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
 * Lesser General Public License for more details.
 *
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 * License along with this software; if not, write to the Free
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package org.jbpm.jpdl.patterns;

import junit.framework.TestCase;

import org.jbpm.graph.def.ActionHandler;
import org.jbpm.graph.def.ProcessDefinition;
import org.jbpm.graph.exe.ExecutionContext;
import org.jbpm.graph.exe.ProcessInstance;
import org.jbpm.graph.exe.Token;
import org.jbpm.taskmgmt.def.Task;
import org.jbpm.taskmgmt.def.TaskMgmtDefinition;
import org.jbpm.taskmgmt.exe.TaskMgmtInstance;

/**
 * http://is.tm.tue.nl/research/patterns/download/swf/pat_12.swf
 * actually this is a combination of unsynchronized tasks and 
 * runtime calculation of the tasks.
 */
public class Wfp13MiWithoutSynchronizationTest extends TestCase {

  private ProcessDefinition pd = null;
  private ProcessInstance pi = null;

  private static int scenario = 0;

  public static class CreateTasks implements ActionHandler {
    private static final long serialVersionUID = 1L;
    public void execute(ExecutionContext executionContext) throws Exception {
      // this piece of code is executed at runtime
      TaskMgmtDefinition taskMgmtDefinition = (TaskMgmtDefinition) executionContext.getDefinition(TaskMgmtDefinition.class);
      Task task = taskMgmtDefinition.getTask("undress");
      
      TaskMgmtInstance tmi = executionContext.getTaskMgmtInstance();
      for (int i = 1; i<scenario; i++) {
        tmi.createTaskInstance(task, executionContext.getToken());
      }
    }
  }

  public void setUp() {
    pd = ProcessDefinition.parseXmlString(
      "<process-definition>" +
      "  <start-state name='a'>" +
      "    <transition to='b' />" +
      "  </start-state>" +
      "  <node name='b'>" +
      "    <event type='node-enter'>" +
      "      <action class='org.jbpm.jpdl.patterns.Wfp13MiWithoutSynchronizationTest$CreateTasks'/>" +
      "    </event>" +
      "    <transition to='c' />" +
      "  </node>" +
      "  <state name='c' />" +
      "  <task name='undress' />" +
      "</process-definition>"
    );
    
    pi = new ProcessInstance(pd);
  }
  
  public void testSituation1() {
    scenario = 1;
    pi.signal();
    assertNbrOfTasks(0);
  }

  public void testSituation2() {
    scenario = 2;
    pi.signal();
    assertNbrOfTasks(1);
  }

  public void testSituation3() {
    scenario = 3;
    pi.signal();
    assertNbrOfTasks(2);
  }

  public void testSituation4() {
    scenario = 4;
    pi.signal();
    assertNbrOfTasks(3);
  }

  private void assertNbrOfTasks(int nbrOfTasks) {
    TaskMgmtInstance taskMgmtInstance = (TaskMgmtInstance) pi.getInstance(TaskMgmtInstance.class);
    Token token = pi.getRootToken();
    
    assertEquals( nbrOfTasks, taskMgmtInstance.getUnfinishedTasks( token ).size() );
    assertSame( pd.getNode("c"), token.getNode() );
  }
}