Examples of org.junit.runner.notification.RunListener

org.junit.runner.notification.RunListener
Register an instance of this class with {@link RunNotifier} to be notifiedof events that occur during a test run. All of the methods in this class are abstract and have no implementation; override one or more methods to receive events.
For example, suppose you have a Cowbell class that you want to make a noise whenever a test fails. You could write:
```
 public class RingingListener extends RunListener { public void testFailure(Failure failure) { Cowbell.ring(); } } 
```
To invoke your listener, you need to run your tests through JUnitCore.
```
 public void main(String... args) { JUnitCore core= new JUnitCore(); core.addListener(new RingingListener()); core.run(MyTestClass.class); } 
```
If a listener throws an exception for a test event, the other listeners will have their {@link RunListener#testFailure(Failure)} called with a {@code Description}of {@link Description#TEST_MECHANISM} to indicate the failure.
By default, JUnit will synchronize calls to your listener. If your listener is thread-safe and you want to allow JUnit to call your listener from multiple threads when tests are run in parallel, you can annotate your test class with {@link RunListener.ThreadSafe}.
Listener methods will be called from the same thread as is running the test, unless otherwise indicated by the method Javadoc @see org.junit.runner.JUnitCore @since 4.0

  @Test
  public void listenersAreCalledCorrectlyInTheFaceOfFailures()
      throws Exception {
    JUnitCore core= new JUnitCore();
    final List<Failure> failures= new ArrayList<Failure>();
    core.addListener(new RunListener() {
      @Override
      public void testRunFinished(Result result) throws Exception {
        failures.addAll(result.getFailures());
      }
    });

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    }
  }
  
  @Test public void testListener() throws Exception {
    JUnitCore runner= new JUnitCore();
    RunListener listener= new RunListener() {
      @Override
      public void testStarted(Description description) {
        assertEquals(Description.createTestDescription(OneTest.class, "testOne"), 
            description);
        count++;

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public class OldTestClassAdaptingListenerTest {
  @Test
  public void addFailureDelegatesToNotifier() {
    Result result= new Result();
    RunListener listener= result.createListener();
    RunNotifier notifier= new RunNotifier();
    notifier.addFirstListener(listener);
    TestCase testCase= new TestCase() {
    };
    TestListener adaptingListener= new JUnit38ClassRunner(testCase)

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  }
  
  @Test public void testFinished() {
    JUnitCore runner= new JUnitCore();
    wasRun= false;
    RunListener listener= new MyListener() {
      @Override
      public void testFinished(Description description) {
        wasRun= true;
      }
    };

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    }
  }
  @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 ";
      }
    });

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        sdb.test.Env.set(jdbc, params, false) ;
        
        JUnitCore x = new org.junit.runner.JUnitCore() ;
        //RunListener listener = new TextListener2() ;
        RunListener listener = new TextListener2(System.out) ;
        x.addListener(listener) ;
        
        //x.run(sdb.test.AllTests.class) ;
        System.out.println("String basic") ;
        x.run(TestStringBasic.class) ;

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    this.failures= failures;
  }


  public Result result() {
    Result result= new Result();
    RunListener listener= result.createListener();
    for (Failure failure : failures) {
      try {
        listener.testFailure(failure);
      } catch (Exception e) {
        throw new RuntimeException("I can't believe this happened");
      }
    }
    return result;

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        system.out().println("Could not find class: " + each);
        Description description= Description.createSuiteDescription(each);
        Failure failure= new Failure(description, e);
        missingClasses.add(failure);
      }
    RunListener listener= new TextListener(system);
    addListener(listener);
    Result result= run(classes.toArray(new Class[0]));
    for (Failure each : missingClasses)
      result.getFailures().add(each);
    return result;

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  /**
   * Do not use. Testing purposes only.
   */
  public Result run(Runner runner) {
    Result result= new Result();
    RunListener listener= result.createListener();
    addFirstListener(listener);
    try {
      fNotifier.fireTestRunStarted(runner.getDescription());
      runner.run(fNotifier);
      fNotifier.fireTestRunFinished(result);

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      super(clazz, findClasses());
    }
 
    @Override
    public void run(final RunNotifier notifier) {
      notifier.addListener(new RunListener() {
        @Override
        public void testFailure(Failure failure) throws Exception {
          // TODO get logger and log it
        }

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