Test-Driven Development (TDD) FAQs

Question 1

What is the Red-Green-Refactor cycle?

Accepted Answer

It is a TDD process where you write a failing test (Red), implement the minimum code required to make that test pass (Green), and then clean up the code (Refactor) while keeping the test passing.

Question 2

How does this improve developer productivity?

Accepted Answer

While it adds a step upfront, TDD significantly reduces time spent on manual debugging and fixing regressions later in the development cycle.

Question 3

Can I use this TDD skill for fixing bugs?

Accepted Answer

Yes. The skill requires you to write a test that reproduces the bug (fails) before you write the code to fix it, ensuring the fix is actually verified.

Question 4

Does this skill work with any testing framework?

Accepted Answer

Yes, it is methodology-focused and can be applied to any language or framework such as Jest, Pytest, Vitest, or JUnit.

Question 5

Why does this skill insist on watching a test fail first?

Accepted Answer

Watching a test fail confirms that the test is actually testing the new behavior. If a test passes immediately, it may be a false positive or the logic may already exist elsewhere.

Test-Driven Development (TDD)

Key Features

Use Cases

Test-Driven Development (TDD)

Key Features

Use Cases