arun-gupta · Dec 7, 2013 · Dec 7, 2013
diff --git a/ejb/timer/src/main/java/org/javaee7/ejb/timer/Ping.java b/ejb/timer/src/main/java/org/javaee7/ejb/timer/Ping.java
@@ -0,0 +1,27 @@
+package org.javaee7.ejb.timer;
+
+public class Ping {
+
+    private String timeInfo;
+    private long time = System.currentTimeMillis();
+
+    public Ping(String s) {
+        this.timeInfo = s;
+    }
+
+    public long getTime() {
+        return time;
+    }
+
+    public String getTimeInfo() {
+        return timeInfo;
+    }
+
+    @Override
+    public String toString() {
+        return "Ping {" +
+                "timeInfo='" + timeInfo + '\'' +
+                ", time=" + time +
+                '}';
+    }
+}
diff --git a/ejb/timer/src/main/java/org/javaee7/ejb/timer/PingsListener.java b/ejb/timer/src/main/java/org/javaee7/ejb/timer/PingsListener.java
@@ -0,0 +1,23 @@
+package org.javaee7.ejb.timer;
+
+import javax.ejb.Singleton;
+import javax.ejb.Startup;
+import javax.enterprise.event.Observes;
+import java.util.List;
+import java.util.concurrent.CopyOnWriteArrayList;
+
+@Startup
+@Singleton
+public class PingsListener {
+
+    final List<Ping> pings = new CopyOnWriteArrayList<>();
+
+    public void listen(@Observes Ping ping) {
+        System.out.println("ping = " + ping);
+        pings.add(ping);
+    }
+
+    public List<Ping> getPings() {
+        return pings;
+    }
+}
diff --git a/ejb/timer/src/main/java/org/javaee7/ejb/timer/TimerSessionBean.java b/ejb/timer/src/main/java/org/javaee7/ejb/timer/TimerSessionBean.java
@@ -39,30 +39,34 @@
  */
 package org.javaee7.ejb.timer;
 
-import java.util.Collection;
-import java.util.Date;
 import javax.annotation.Resource;
 import javax.ejb.Schedule;
 import javax.ejb.SessionContext;
 import javax.ejb.Singleton;
 import javax.ejb.Startup;
 import javax.ejb.Timer;
+import javax.enterprise.event.Event;
+import javax.inject.Inject;
+import java.util.Collection;
 
 /**
  * @author Arun Gupta
  */
 @Startup
 @Singleton
 public class TimerSessionBean {
-
-    @Resource SessionContext ctx;
 
-    @Schedule(hour="*", minute="*", second="*/5", info = "Every 5 second timer")
+    @Resource
+    SessionContext ctx;
+
+    @Inject
+    Event<Ping> pingEvent;
+
+    @Schedule(hour = "*", minute = "*", second = "*/5", info = "Every 5 second timer")
     public void printDate() {
-        System.out.println(new Date());
         Collection<Timer> timers = ctx.getTimerService().getAllTimers();
         for (Timer t : timers) {
-            System.out.println("Timer info: " + t.getInfo());
+            pingEvent.fire(new Ping(t.getInfo().toString()));
         }
     }
 

diff --git a/ejb/timer/src/main/webapp/index.jsp b/ejb/timer/src/main/webapp/index.jsp
diff --git a/ejb/timer/src/test/java/org/javaee7/ejb/timer/TimerSessionBeanTest.java b/ejb/timer/src/test/java/org/javaee7/ejb/timer/TimerSessionBeanTest.java
@@ -0,0 +1,71 @@
+package org.javaee7.ejb.timer;
+
+import org.hamcrest.BaseMatcher;
+import org.hamcrest.Description;
+import org.hamcrest.Matcher;
+import org.jboss.arquillian.container.test.api.Deployment;
+import org.jboss.arquillian.junit.Arquillian;
+import org.jboss.shrinkwrap.api.ShrinkWrap;
+import org.jboss.shrinkwrap.api.spec.WebArchive;
+import org.jboss.shrinkwrap.resolver.api.maven.Maven;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import javax.inject.Inject;
+import java.io.File;
+
+import static com.jayway.awaitility.Awaitility.*;
+import static org.hamcrest.MatcherAssert.*;
+import static org.hamcrest.Matchers.*;
+
+/**
+ * author: Jakub Marchwicki
+ */
+@RunWith(Arquillian.class)
+public class TimerSessionBeanTest {
+
+    final static long TIMEOUT = 5000l;
+    final static long TOLERANCE = 1000l;
+
+    @Inject
+    PingsListener pings;
+
+    @Deployment
+    public static WebArchive deploy() {
+        File[] jars = Maven.resolver().loadPomFromFile("pom.xml")
+                .resolve("com.jayway.awaitility:awaitility")
+                .withTransitivity().asFile();
+
+        return ShrinkWrap.create(WebArchive.class)
+                .addAsLibraries(jars)
+                .addClasses(Ping.class, PingsListener.class, TimerSessionBean.class);
+    }
+
+    @Test
+    public void should_receive_two_pings() {
+        await().untilCall(to(pings.getPings()).size(), equalTo(2));
+
+        Ping firstPing = pings.getPings().get(0);
+        Ping secondPing = pings.getPings().get(1);
+
+        long delay = secondPing.getTime() - firstPing.getTime();
+        System.out.println("Actual timeout = " + delay);
+        assertThat(delay, is(withinWindow(TIMEOUT, TOLERANCE)));
+    }
+
+    private Matcher<Long> withinWindow(final long timeout, final long tolerance) {
+            return new BaseMatcher<Long>() {
+                @Override
+                public boolean matches(Object item) {
+                    final Long actual = (Long) item;
+                    return Math.abs(actual - timeout) < tolerance;
+                }
+
+                @Override
+                public void describeTo(Description description) {
+                    //To change body of implemented methods use File | Settings | File Templates.
+                }
+            };
+    }
+
+}