Reverted test case changes

provider/notification-azure/src/test/java/org/opengroup/osdu/notification/messageBus/ProcessNotificationTest.java

@@ -93,9 +93,14 @@ public class ProcessNotificationTest {
         response.setResponseCode(400);
         when(requestBodyAdapter.extractNotificationContent(message, subscriptionName)).thenReturn(notificationContent);
         when(notificationHandler.notifySubscriber(notificationId, notificationData, requestAttributes)).thenReturn(response);
-        processNotification.performNotification(message, subscriptionName);
-        verify(notificationHandler, times(1)).notifySubscriber(notificationId, notificationData, requestAttributes);
-        verify(requestBodyAdapter, times(1)).extractNotificationContent(message, subscriptionName);
+        try {
+            processNotification.performNotification(message, subscriptionName);
+            fail(EXCEPTION_NOT_THROWN);
+        } catch (Exception e) {
+            verify(notificationHandler, times(1)).notifySubscriber(notificationId, notificationData, requestAttributes);
+            verify(requestBodyAdapter, times(1)).extractNotificationContent(message, subscriptionName);
+            Assert.assertEquals(NOT_ACKNOWLEDGE, e.getMessage());
+        }
     }
 
     @Test