package org.codehaus.plexus.test;
   
   import org.codehaus.plexus.personality.plexus.lifecycle.phase.Startable;
   import org.codehaus.plexus.personality.plexus.lifecycle.phase.StartingException;
   import org.codehaus.plexus.personality.plexus.lifecycle.phase.StoppingException;
   
   import static junit.framework.Assert.assertTrue;
   
   public class AbstractStartableComponent implements StartableComponent, Startable {
      public int startOrder;
  
      public int stopOrder;
  
      public AbstractStartableComponent component1;
  
      public AbstractStartableComponent component2;
  
      public void start() throws StartingException {
          startOrder = startGenerator.getAndIncrement();
      }
  
      public void stop() throws StoppingException {
          stopOrder = stopGenerator.getAndIncrement();
      }
  
      public void assertStartOrderCorrect() {
          if (component1 != null) {
              assertTrue("This component started before injected component1", startOrder > component1.startOrder);
          }
          if (component2 != null) {
              assertTrue("This component started before injected component2", startOrder > component2.startOrder);
          }
  
          // assert children are correct
          if (component1 != null) {
              component1.assertStartOrderCorrect();
          }
          if (component2 != null) {
              component2.assertStartOrderCorrect();
          }
      }
  
      public void assertStopOrderCorrect() {
          if (component1 != null) {
              assertTrue("This component stopped after injected component1", stopOrder < component1.stopOrder);
          }
          if (component2 != null) {
              assertTrue("This component stopped after injected component2", stopOrder < component2.stopOrder);
          }
  
          // assert children are correct
          if (component1 != null) {
              component1.assertStopOrderCorrect();
          }
          if (component2 != null) {
              component2.assertStopOrderCorrect();
          }
      }
  }