package org.apidesign.deadlock;

 import java.awt.Dimension;

 import java.util.logging.Level;

 import java.util.logging.Logger;

 import javax.swing.JFrame;

 import javax.swing.JLabel;

 import javax.swing.SwingUtilities;

 import org.netbeans.junit.NbTestCase;

 import static org.junit.Assert.*;

 public class DeadlockSyncOnTest extends NbTestCase {

     static final Logger LOG = Logger.getLogger(DeadlockSyncOnTest.class.getName());

     private static final JLabel preLoadClasses = new JLabel();

     public DeadlockSyncOnTest(String n) {

         super(n);

     }

     @Override

     protected int timeOut() {

         return 30000;

     }

     public static class StrangePanel extends LabelProviderSyncOnTreeLock {

         @Override

         public Dimension getPreferredSize () {

             try {

                 Thread.sleep(1000);

                 JLabel sampleLabel = createLabel();

                 return sampleLabel.getPreferredSize();

             } catch (InterruptedException ex) {

                 Logger.getLogger(DeadlockSyncOnTest.class.getName()).log(Level.SEVERE, null, ex);

                 return super.getPreferredSize();

             }

         }

     }

     public void testCreateLabel() throws Exception {

         final LabelProviderSyncOnTreeLock instance = new StrangePanel();

         class R implements Runnable {

             public void run() {

                 JFrame f = new JFrame();

                 f.add(instance);

                 f.setVisible(true);

                 f.pack();

             }

         }

         R showFrame = new R();

         SwingUtilities.invokeLater(showFrame);

         Thread.sleep(500);

         JLabel result = instance.createLabel();

         assertNotNull("Creates the result", result);

     }

 }