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CTAL-TA_SYLL2019 · Question #18

You are testing an ATM based on the following use ATM start screen is showing 1. The user inserts card 2. The user types in PIN 3 The user selects cash with receipt' 4. The user selects €50 5. The…

The correct answer is B. The use case should also include alternative behaviour. The use case only describes the normal or happy path scenario, where the user performs a successful cash withdrawal. However, it does not consider any alternative or exceptional scenarios, such as invalid card, incorrect PIN, insufficient balance, network failure, etc. These…

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Question

You are testing an ATM based on the following use ATM start screen is showing 1. The user inserts card 2. The user types in PIN 3 The user selects cash with receipt' 4. The user selects €50 5. The user selects no further service' Expected results - The ATM provides €50 to the user - The ATM returns the card and balance slip - The ATM clears the screen - The ATM returns to start menu You are asked to review this use case. You are asked to review this use case. What is the most important information that is missing from this use case?

Options

  • ANothing has been defined for expected response times.
  • BThe use case should also include alternative behaviour.
  • CMore test cases are needed to achieve the minimum acceptable level of coverage.
  • DExpected results not clearly defined

How the community answered

(30 responses)
  • A
    10% (3)
  • B
    80% (24)
  • C
    7% (2)
  • D
    3% (1)

Explanation

The use case only describes the normal or happy path scenario, where the user performs a successful cash withdrawal. However, it does not consider any alternative or exceptional scenarios, such as invalid card, incorrect PIN, insufficient balance, network failure, etc. These scenarios are important to test the robustness and reliability of the ATM system, and should be included in the use case specification. Reference = ISTQB Certified Tester Advanced Level Syllabus Test Analyst, Section 2.2.1, Use Case Testing1; ISTQB Advanced Level Test Analyst (CTAL) Exam Study Guide, Section 2.2.1, Use

Topics

#use case testing#alternative scenarios#use case review#test basis completeness

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