Bael-1965: using awaitility in test (#4691)

* how to trigger and stop scheduled batch job

* Replace thread.sleep to awaitility tool in integration testing

spring-batch/src/main/java/org/baeldung/batchscheduler/SpringBatchScheduler.java

@@ -6,7 +6,7 @@ import java.util.List;
 import java.util.Map;
 import java.util.concurrent.ScheduledFuture;
 import java.util.concurrent.atomic.AtomicBoolean;
-
+import java.util.concurrent.atomic.AtomicInteger;
 import org.baeldung.batchscheduler.model.Book;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -45,7 +45,7 @@ public class SpringBatchScheduler {
 
     private AtomicBoolean enabled = new AtomicBoolean(true);
 
-    private Date currentLaunchDate;
+    private AtomicInteger batchRunCounter = new AtomicInteger(0);
 
     private final Map<Object, ScheduledFuture<?>> scheduledTasks = new IdentityHashMap<>();
 
@@ -60,18 +60,14 @@ public class SpringBatchScheduler {
         Date date = new Date();
         logger.debug("scheduler starts at " + date);
         if (enabled.get()) {
-            currentLaunchDate = date;
-            JobExecution jobExecution = jobLauncher().run(job(), new JobParametersBuilder().addDate("launchDate", currentLaunchDate)
+            JobExecution jobExecution = jobLauncher().run(job(), new JobParametersBuilder().addDate("launchDate", date)
                 .toJobParameters());
+            batchRunCounter.incrementAndGet();
             logger.debug("Batch job ends with status as " + jobExecution.getStatus());
         }
         logger.debug("scheduler ends ");
     }
 
-    public Date getCurrentLaunchDate() {
-        return currentLaunchDate;
-    }
-
     public void stop() {
         enabled.set(false);
     }
@@ -169,4 +165,8 @@ public class SpringBatchScheduler {
         };
     }
 
+    public AtomicInteger getBatchRunCounter() {
+        return batchRunCounter;
+    }
+
 }