What are Test Cases?

• A. Detailed and specific; test one condition at a time
• B. Randomized performance benchmarks
• C. High-level design overviews
• D. End-user manuals

Answer: (A)

Test cases are detailed, specific scenarios used to verify that a program behaves correctly by exercising one condition or path at a time. Each test case describes the inputs, the actions to take, and the expected output, so you can confirm the observed behavior matches the specification and reproduce issues when they arise. Building tests this way lets you isolate where a defect occurs and ensures later changes don’t introduce new problems (regression testing). The described choice matches this purpose because it emphasizes precision and testing one condition at a time, which is exactly how test cases are designed. Other options describe different things—randomized performance benchmarks measure speed, high-level design overviews cover architecture, and end-user manuals explain how to use the software—so they don’t fit the concept of test cases.