Software Testing Fundamentals Flashcards

What distinguishes verification from validation?

Answer: Verification checks if we built it right; validation checks if we built the right thing

Verification confirms the product meets specifications, while validation confirms it meets user needs.

Which level of testing checks the interaction between integrated modules?

Answer: Integration testing

Integration testing verifies that combined modules work together correctly through their interfaces.

What is a test oracle?

Answer: A mechanism for determining the expected result of a test

A test oracle is the source used to decide whether a test's actual output is correct.

Which statement about exhaustive testing is correct?

Answer: It is usually impractical due to too many possible inputs

Testing every possible input combination is generally infeasible, so testing focuses on representative cases.

A defect found during testing but caused by a missing requirement is best classified as a problem in which phase?

Answer: Requirements

A missing requirement originates in the requirements phase, even if discovered later during testing.

What does 'test coverage' measure?

Answer: The extent to which the code or requirements are exercised by tests

Test coverage quantifies how much of the code, requirements, or functionality has been tested.

Why is early defect detection generally cheaper?

Answer: The cost to fix a defect rises as it progresses through later phases

Fixing a defect costs more in later phases because it requires reworking more dependent work.