CS Testing & Quality Assurance 3

Question 1

Mutation testing evaluates the quality of a test suite by doing what?

Accepted Answer

Introducing small code faults and checking if tests detect them

Answer

Mutation testing seeds small deliberate faults (mutants) and measures how many the test suite kills.

Question 2

An integration strategy that tests high-level modules first, replacing lower modules with stand-ins, is called what?

Accepted Answer

Top-down integration using stubs

Answer

Top-down integration starts from upper-level modules and uses stubs to simulate the not-yet-integrated lower modules.

Question 3

A test passes and fails intermittently across runs with no code changes. What is this test commonly called?

Accepted Answer

A flaky test

Answer

A flaky test produces inconsistent results due to nondeterminism such as timing, ordering, or shared state.

Question 4

Which testing level is performed by end users or customers to determine whether the system meets business requirements?

Accepted Answer

Acceptance testing

Answer

Acceptance testing confirms the system satisfies business requirements, typically involving the customer or end users.

Question 5

Equivalence partitioning reduces the number of test cases by assuming what?

Accepted Answer

Inputs in the same partition are processed the same way, so one representative suffices

Answer

Equivalence partitioning groups inputs the program treats equivalently, so one value per class represents the whole class.

(CS) Computer Science Practice Test