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 package org.apidesign.codeinjection;

 import org.apidesign.codeinjection.spi.CountDownExtender;

 import org.junit.Test;

 import org.netbeans.junit.MockServices;

 import static org.junit.Assert.*;

 /** Final count down test.

  *

  * @author Jaroslav Tulach <jtulach@netbeans.org>

  */

 public class Version20Test {

     public Version20Test() {

     }

     /** creates version 2.0 */

     private static CountDown create(int value) {

         return new CountDownImplV2(value);

     }

     @Test

     public void testDecrementFourTimes() {

         MockServices.setServices();

         CountDown counter = create(4);

         assertFalse("Not down yet", counter.isDown()); counter.down();

         assertFalse("Not down yet", counter.isDown()); counter.down();

         assertFalse("Not down yet", counter.isDown()); counter.down();

         assertFalse("Not down yet", counter.isDown()); counter.down();

         assertTrue("Down now", counter.isDown());

     }

     @Test

     public void testDecrementTwoTimesEnough() {

         MockServices.setServices(DecrementByTwo.class);

         CountDown counter = create(4);

         assertFalse("Not down yet", counter.isDown()); counter.down();

         assertFalse("Not down yet", counter.isDown()); counter.down();

         assertTrue("Two Down is enough", counter.isDown());

     }

     public static final class DecrementByTwo implements CountDownExtender {

         public int decrement(int value) {

             return value - 2;

         }

     }

 }