CAD Test-Driven Development (TDD) 2

Question 1

What does the 'Red' phase in the Red-Green-Refactor cycle indicate?

Accepted Answer

The test fails because the production code doesn't exist yet

Answer

The test passes with flying colors

Answer

The code has a runtime error unrelated to tests

Answer

Refactoring has introduced a regression

Question 2

Which practice does TDD most directly discourage?

Accepted Answer

Writing production code before any test exists

Answer

Writing modular code

Answer

Continuous integration

Answer

Pair programming

Question 3

In TDD, what is the purpose of writing only the minimum code to pass a test?

Accepted Answer

To avoid over-engineering and keep design emergent

Answer

To reduce compile time

Answer

To satisfy code coverage tools

Answer

To make refactoring optional

Question 4

A developer writes a test that passes immediately without any production code changes. This is called a:

Accepted Answer

Degenerate test

Answer

Green test

Answer

Assertion-free test

Answer

False negative

Question 5

What is 'triangulation' in the context of TDD?

Accepted Answer

Adding multiple specific examples to drive out a general algorithm

Answer

Running tests on three different environments

Answer

Organizing tests into three layers: unit, integration, and E2E

Answer

Using three assertions per test case

Question 6

Which statement best describes TDD's impact on software design?

Accepted Answer

TDD drives a loosely coupled, testable design as a side effect

Answer

TDD has no influence on design; it only checks correctness

Answer

TDD enforces a specific architectural pattern like MVC

Answer

TDD replaces the need for design reviews

Question 7

When should a developer refactor during TDD?

Accepted Answer

After all tests pass (Green phase)

Answer

Before writing the failing test

Answer

Only after the full feature is complete

Answer

During the Red phase to simplify the test