Test make sure the BookStore application works if a Combination of Bank, DeliveryCo and Email is turned off
Closing the terminal when starting the application means to turn off e.g. closing the Bank terminal closes Bank application
Test making orders and see if the BookStore application breaks
Read this before testing anything (this will stop VSCode from stopping at exceptions if it has been caught) Before placing your order you can “Detach” the debugger (Debugger > Detach All) to observe the overall functionality in the question’s scenarios without being interrupted by the debugger
Test make sure the BookStore application works if a Combination of Bank, DeliveryCo and Email is turned off