Algorithms Quality Control & Assurance 3

Question 1

What is 'boundary value analysis' used for in algorithm testing?

Accepted Answer

Testing inputs at the edges of valid ranges

Answer

Boundary value analysis tests values at and just beyond the limits of input domains, where bugs are most commonly found.

Question 2

Which approach verifies that an algorithm produces the same result when applied multiple times to the same input?

Accepted Answer

Idempotency testing

Answer

Idempotency testing confirms that repeated invocations with identical inputs yield identical outputs, which is critical for functions that must be safely retried.

Question 3

What does 'test-driven development' (TDD) require developers to do first?

Accepted Answer

Write a failing test before writing code

Answer

TDD mandates writing a failing test that defines desired behavior before any production code is written, ensuring code is purpose-built to pass the test.

Question 4

In fuzz testing, what is the primary goal?

Accepted Answer

Feeding malformed or random inputs to discover crashes and vulnerabilities

Answer

Fuzzing bombards an algorithm with unexpected, malformed, or random inputs to uncover crashes, exceptions, or security vulnerabilities.

Question 5

What is a 'mock object' used for in unit testing?

Accepted Answer

Simulating real dependencies so the unit under test is isolated

Answer

Mock objects simulate the behavior of real dependencies (databases, APIs) so that the unit being tested can be verified in isolation.

Algorithms Practice Test

Algorithms Practice Test

Algorithms Quality Control & Assurance 3