Design & Methodology Flashcards

Which test design technique is MOST appropriate for testing error-handling logic based on specific combinations of invalid inputs?

Answer: Decision table testing

Decision tables systematically capture complex combinations of conditions and their corresponding actions, making them ideal for error-handling scenarios.

What does test 'exit criteria' define in a structured testing methodology?

Answer: The conditions that must be met to conclude a test phase and proceed

Exit criteria specify measurable conditions—such as pass rate, defect density, or coverage thresholds—that signal a test phase is sufficiently complete.

A use case test design approach derives test cases from:

Answer: Actor-system interaction scenarios that describe functional behavior

Use case testing identifies and tests the main success scenarios, alternative flows, and exception flows described in use cases or user stories.

Which metric would BEST indicate that test design coverage is insufficient for a release decision?

Answer: Low requirements coverage percentage in the traceability matrix

A low requirements coverage percentage means many requirements lack corresponding test cases, leaving significant untested risk.

In test methodology, what is the purpose of a 'test oracle'?

Answer: A mechanism or source used to determine whether actual test results are correct

A test oracle provides the expected results against which actual outputs are compared—it can be a specification, another system, or domain expertise.

When designing regression tests after a bug fix, which approach BEST balances thoroughness with efficiency?

Answer: Run tests for the fixed area plus tests for features likely impacted by the change

Targeted regression testing covers the changed area and its dependencies, catching regressions without the overhead of a full suite re-run.

Which of the following is a characteristic of white-box test design techniques?

Answer: Tests are designed based on analysis of internal code structure and logic

White-box (structural) techniques use knowledge of code internals—such as branches, paths, and conditions—to derive test cases and measure coverage.