minor cleanup work

jee7/src/test/java/com/baeldung/timer/AutomaticTimerBeanIntegrationTest.java

@@ -0,0 +1,66 @@
+package com.baeldung.timer;
+
+import com.jayway.awaitility.Awaitility;
+import org.hamcrest.Matchers;
+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 java.util.concurrent.TimeUnit;
+
+import static com.jayway.awaitility.Awaitility.await;
+import static com.jayway.awaitility.Awaitility.to;
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.hamcrest.Matchers.equalTo;
+
+
+@RunWith(Arquillian.class)
+public class AutomaticTimerBeanIntegrationTest {
+
+    //the @AutomaticTimerBean has a method called every 10 seconds
+    //testing the difference ==> 100000
+    final static long TIMEOUT = 10000l;
+
+    //the tolerance accepted , so if between two consecutive calls there has to be at least 9 or max 11 seconds.
+    //because the timer service is not intended for real-time applications so it will not be exactly 10 seconds
+    final static long TOLERANCE = 1000l;
+
+    @Inject
+    TimerEventListener timerEventListener;
+
+    @Deployment
+    public static WebArchive deploy() {
+        File[] jars = Maven.resolver().loadPomFromFile("pom.xml")
+            .resolve("com.jayway.awaitility:awaitility")
+            .withTransitivity().asFile();
+
+        //only @AutomaticTimerBean is deployed not the other timers
+        return ShrinkWrap.create(WebArchive.class)
+            .addAsLibraries(jars)
+            .addClasses(WithinWindowMatcher.class, TimerEvent.class, TimerEventListener.class, AutomaticTimerBean.class);
+    }
+
+
+
+    @Test
+    public void should_receive_two_pings() {
+        Awaitility.setDefaultTimeout(30, TimeUnit.SECONDS);
+        //the test will wait here until two events are triggered
+        await().untilCall(to(timerEventListener.getEvents()).size(), equalTo(2));
+
+        TimerEvent firstEvent = timerEventListener.getEvents().get(0);
+        TimerEvent secondEvent = timerEventListener.getEvents().get(1);
+
+        long delay = secondEvent.getTime() - firstEvent.getTime();
+        System.out.println("Actual timeout = " + delay);
+
+        //ensure that the delay between the events is more or less 10 seconds (no real time precision)
+        assertThat(delay, Matchers.is(WithinWindowMatcher.withinWindow(TIMEOUT, TOLERANCE)));
+    }
+}