package org.junit.tests.listening;
   
   import static org.junit.Assert.assertEquals;
   
   import org.junit.Test;
   import org.junit.runner.Description;
   import org.junit.runner.JUnitCore;
   import org.junit.runner.notification.RunListener;
   
  public class ListenerTest {
      static private String log;
  
      public static class OneTest {
          @Test
          public void nothing() {
          }
      }
  
      @Test
      public void notifyListenersInTheOrderInWhichTheyAreAdded() {
          JUnitCore core = new JUnitCore();
          log = "";
          core.addListener(new RunListener() {
              @Override
              public void testRunStarted(Description description) throws Exception {
                  log += "first ";
              }
          });
          core.addListener(new RunListener() {
              @Override
              public void testRunStarted(Description description) throws Exception {
                  log += "second ";
              }
          });
          core.run(OneTest.class);
          assertEquals("first second ", log);
      }
  }