Exercise: One of the folk tales of software lore describes a disgruntled employee who writes a payroll program which contains logic that checks for the employees identification number before producing paychecks. If the employee is ever terminated, the program creates havoc. Discuss this situation in terms of the error, fault, and failure pattern and decide which form of testing would be appropriate.

Type of testings: code-based testing and specification testing

Note: please no spam, I am not asking for a perfect answer, the last time I posted this I got a random answer which was not relevant to the question, I will upvote as soon as I can