Full-Stack Development Quality Control & Assurance 2

Question 1

Which testing technique executes code without examining internal structure, focusing solely on inputs and outputs?

Accepted Answer

Black-box testing

Answer

Black-box testing treats the system as an opaque box and validates behavior purely based on inputs and expected outputs.

Question 2

In a CI/CD pipeline, at which stage should unit tests typically run?

Accepted Answer

On every commit, before integration tests

Answer

Unit tests run on every commit as the first gate in CI to catch failures early before slower integration tests execute.

Question 3

What does 'test coverage' primarily measure?

Accepted Answer

Percentage of code executed by tests

Answer

Test coverage measures the percentage of source code lines, branches, or paths that are exercised during test execution.

Question 4

Which type of testing verifies that a new code change has not broken existing functionality?

Accepted Answer

Regression testing

Answer

Regression testing re-runs existing tests after changes to ensure previously working features still function correctly.

Question 5

What is a 'test double' in software testing?

Accepted Answer

A generic term for objects that replace real dependencies in tests

Answer

Test doubles (mocks, stubs, fakes, spies) are stand-ins for real dependencies that allow isolated unit testing.

Full-Stack Development Practice Test