package org.junit.tests.listening;
   
   import static org.junit.Assert.assertEquals;
   import static org.junit.Assert.assertTrue;
   
   import junit.framework.TestCase;
   import org.junit.Test;
   import org.junit.runner.Description;
   import org.junit.runner.JUnitCore;
  import org.junit.runner.notification.RunListener;
  
  public class RunnerTest {
  
      private boolean wasRun;
  
      public class MyListener extends RunListener {
  
          int testCount;
  
          @Override
          public void testRunStarted(Description description) {
              this.testCount = description.testCount();
          }
      }
  
      public static class Example {
          @Test
          public void empty() {
          }
      }
  
      @Test
      public void newTestCount() {
          JUnitCore runner = new JUnitCore();
          MyListener listener = new MyListener();
          runner.addListener(listener);
          runner.run(Example.class);
          assertEquals(1, listener.testCount);
      }
  
      public static class ExampleTest extends TestCase {
          public void testEmpty() {
          }
      }
  
      @Test
      public void oldTestCount() {
          JUnitCore runner = new JUnitCore();
          MyListener listener = new MyListener();
          runner.addListener(listener);
          runner.run(ExampleTest.class);
          assertEquals(1, listener.testCount);
      }
  
      public static class NewExample {
          @Test
          public void empty() {
          }
      }
  
      @Test
      public void testFinished() {
          JUnitCore runner = new JUnitCore();
          wasRun = false;
          RunListener listener = new MyListener() {
              @Override
              public void testFinished(Description description) {
                  wasRun = true;
              }
          };
          runner.addListener(listener);
          runner.run(NewExample.class);
          assertTrue(wasRun);
      }
  }