Setup System:

1. Use docker-compose to setup the TrainTicket system.
2. Log in and make sure that there is at least one ticket order that fits the following:
   (1) The train number is start with Z or K
   (2) The order status is PAID


Failure Triggering Usage Steps:

1. Log in.
2. Click [Flow Two - Ticket Cancel & Ticket Change].
3. Click [Refresh Orders].
4. Select the order mentioned above and click [Cancel Order].
5. Click [Confirm Cancel].
6. You will get result of cancel. If you get [SUCCESS] means the fault do not occur.
                                  If you get [Error] alert, that means the fault occurs, and you will see the exception logs on the server console.


Failure Triggering Test Case:

There is only one test case in ts-ui-test, named [TestFlowOne.java].
Just run it and it will do like failure triggering usage steps mentioned above.