Added UnitTest cases for business delegate.

business-delegate/src/main/java/com/iluwatar/business/delegate/App.java

@@ -1,31 +1,34 @@
 package com.iluwatar.business.delegate;
 
 /**
- * 
  * The Business Delegate pattern adds an abstraction layer between the presentation and business
  * tiers. By using the pattern we gain loose coupling between the tiers. The Business Delegate
  * encapsulates knowledge about how to locate, connect to, and interact with the business objects
  * that make up the application.
- * <p>
- * Some of the services the Business Delegate uses are instantiated directly, and some can be
+ * 
+ * <p>Some of the services the Business Delegate uses are instantiated directly, and some can be
  * retrieved through service lookups. The Business Delegate itself may contain business logic too
  * potentially tying together multiple service calls, exception handling, retrying etc.
- * <p>
- * In this example the client ({@link Client}) utilizes a business delegate (
+ * 
+ * <p>In this example the client ({@link Client}) utilizes a business delegate (
  * {@link BusinessDelegate}) to execute a task. The Business Delegate then selects the appropriate
  * service and makes the service call.
- *
  */
 public class App {
 
   /**
-   * Program entry point
-   * 
+   * Program entry point.
+   *
    * @param args command line args
    */
   public static void main(String[] args) {
 
     BusinessDelegate businessDelegate = new BusinessDelegate();
+    BusinessLookup businessLookup = new BusinessLookup();
+    businessLookup.setEjbService(new EjbService());
+    businessLookup.setJmsService(new JmsService());
+
+    businessDelegate.setLookupService(businessLookup);
     businessDelegate.setServiceType(ServiceType.EJB);
 
     Client client = new Client(businessDelegate);

business-delegate/src/main/java/com/iluwatar/business/delegate/BusinessDelegate.java

@@ -1,22 +1,24 @@
 package com.iluwatar.business.delegate;
 
 /**
- * 
  * BusinessDelegate separates the presentation and business tiers
- *
  */
 public class BusinessDelegate {
 
-  private BusinessLookup lookupService = new BusinessLookup();
-  private BusinessService businessService;
-  private ServiceType serviceType;
+    private BusinessLookup lookupService;
+    private BusinessService businessService;
+    private ServiceType serviceType;
 
-  public void setServiceType(ServiceType serviceType) {
-    this.serviceType = serviceType;
-  }
+    public void setLookupService(BusinessLookup businessLookup) {
+        this.lookupService = businessLookup;
+    }
 
-  public void doTask() {
-    businessService = lookupService.getBusinessService(serviceType);
-    businessService.doProcessing();
-  }
+    public void setServiceType(ServiceType serviceType) {
+        this.serviceType = serviceType;
+    }
+
+    public void doTask() {
+        businessService = lookupService.getBusinessService(serviceType);
+        businessService.doProcessing();
+    }
 }

business-delegate/src/main/java/com/iluwatar/business/delegate/BusinessLookup.java

@@ -1,17 +1,31 @@
 package com.iluwatar.business.delegate;
 
 /**
- * 
- * Class for performing service lookups
- *
+ * Class for performing service lookups.
  */
 public class BusinessLookup {
 
+  private EjbService ejbService;
+
+  private JmsService jmsService;
+
+  /**
+   * @param serviceType Type of service instance to be returned.
+   * @return Service instance.
+   */
   public BusinessService getBusinessService(ServiceType serviceType) {
     if (serviceType.equals(ServiceType.EJB)) {
-      return new EjbService();
+      return ejbService;
     } else {
-      return new JmsService();
+      return jmsService;
     }
   }
+
+  public void setJmsService(JmsService jmsService) {
+    this.jmsService = jmsService;
+  }
+
+  public void setEjbService(EjbService ejbService) {
+    this.ejbService = ejbService;
+  }
 }