@Test
public void testPublishNotificationMessagesDatabaseException() throws Throwable
{

    // Create a notification message.
    NotificationMessage notificationMessage = new NotificationMessage(MessageTypeEntity.MessageEventTypes.SQS.name(), AWS_SQS_QUEUE_NAME, MESSAGE_TEXT,
        Collections.singletonList(new MessageHeader(KEY, VALUE)));
    // Mock a join point of the method call.
    ProceedingJoinPoint joinPoint = getMockedProceedingJoinPoint("testPublishNotificationMessages");
    // Mock the external calls.
    doCallRealMethod().when(notificationMessageInMemoryQueue).clear();
    doCallRealMethod().when(notificationMessageInMemoryQueue).add(notificationMessage);
    when(notificationMessageInMemoryQueue.isEmpty()).thenCallRealMethod();
    doCallRealMethod().when(notificationMessageInMemoryQueue).remove();
    doThrow(new AmazonServiceException(ERROR_MESSAGE)).when(notificationMessagePublishingService).publishNotificationMessage(notificationMessage);
    doThrow(new RuntimeException(ERROR_MESSAGE)).when(notificationMessagePublishingService).addNotificationMessageToDatabaseQueue(notificationMessage);
    // Clear the queue.
    notificationMessageInMemoryQueue.clear();
    // Add the notification message to the queue.
    notificationMessageInMemoryQueue.add(notificationMessage);
    // Validate that the queue is not empty now.
    assertFalse(notificationMessageInMemoryQueue.isEmpty());
    // Call the method under test.
    publishNotificationMessagesAdvice.publishNotificationMessages(joinPoint);
    // Verify the external calls.
    verify(notificationMessageInMemoryQueue, times(2)).clear();
    verify(notificationMessageInMemoryQueue).add(notificationMessage);
    verify(notificationMessageInMemoryQueue, times(3)).isEmpty();
    verify(notificationMessageInMemoryQueue).remove();
    verify(notificationMessagePublishingService).publishNotificationMessage(notificationMessage);
    verify(notificationMessagePublishingService).addNotificationMessageToDatabaseQueue(notificationMessage);
    verifyNoMoreInteractionsHelper();
    // Validate the results.
    assertTrue(notificationMessageInMemoryQueue.isEmpty());
}