CHAPTER 10 LAB

Use Case Template
Use Case Name:	Gas transaction with a credit card.
Use Case ID:	Customer ID
Scope:	This use case describes how you can pay for gas quick and easy.  Some pumps require the zip code registered to your card.
Stakeholders and Interests:	Customer-needs gas to run car Gas company-wants customer to get gas quick and easy
Primary Actor:	Customer
Preconditions:	Customer has inserted their credit or debit card.
Trigger:	Customer selects credit or debit at main menu screen.
Main Success Scenario:	1.Customer inserts credit or debit card 2.Customer chooses either credit or debit 3.Customer then chooses the grade of gas, ex.regular, plus, or premium 4.Customer then pumps how much gas they need 5.Customer hangs the pump back on the pumping station 6.Customer then takes their receipt
Extensions:	1.Customer enters invalid zip code 2.Customer’s credit card is maxed out 3.Gas pump is non-operational
Guarantee:	The gas pump is non-operational or the gas company is out of gas.

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