State transition testing is a black-box testing technique where test cases are designed to cover states and transitions of a state machine.
Given the state model with the following transitions:
* PLACED -> IN PRODUCTION
* IN PRODUCTION -> CANCELLED
* IN PRODUCTION -> SHIPPED
* SHIPPED -> INVOICED
* INVOICED -> CANCELLED
* CANCELLED -> PLACED
To cover all transitions at least once, we need to create a sequence that covers all six transitions.
Option A: IN PRODUCTION -> CANCELLED -> PLACED -> IN PRODUCTION -> CANCELLED -> PLACED- Misses SHIPPED -> INVOICED and INVOICED -> CANCELLED transitions.
Option B: IN PRODUCTION -> SHIPPED -> INVOICED -> CANCELLED -> PLACED -> IN PRODUCTION- Covers all transitions.
Option C: PLACED -> IN PRODUCTION -> SHIPPED -> CANCELLED (ISTQB not-for-profit association) (Udemy)sses INVOICED -> CANCELLED transition.
Option D: PLACED -> CANCELLED -> PLACED -> CANCELLED -> PLACED -> IN PRODUCTION -> CANCELLED- Misses SHIPPED -> INVOICED and INVOICED -> CANCELLED transitions.
Given these, Option B covers all the transitions6†source9†source.
References:
* Certified Tester Foundation Level v4.0
* 10 Sample Exams ISTQB Foundation Level (CTFL) v4.0