Based on the system state transition diagram of an ATM system shown below, using the state transition test technique which of the following is an example of a test case required to achieve 1-switch coverage?

Based on the system state transition diagram of an ATM system shown below, using the state transition test technique which of the following is an example of a test case required to achieve 1-switch coverage?

A . 1 st try-> 2nd try
B . 1 st try -> 2nd try -> 3rd try
C . 1st try -> 2nd try -> eat card
D . 1 st try -> 2nd try -> 3rd try -> access to act

View Answer

Answer: C

Explanation:

1-switch coverage means that every possible transition from one state to another is tested at least once. Option C is the only test case that covers the transition from 2nd try to eat card, which is not covered by any other option.

Reference = ISTQB Certified Tester Advanced Level Syllabus Technical Test Analyst, page 58, section 4.3.2.2.