ListenerTest.java

package org.junit.tests;

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);
	}
}