Unit Testing · question
Q.02 of 32
What are the characteristics of a good unit test?
← All Unit Testing questions
Re-explain
Good unit tests follow the FIRST principles:
- Fast: Run quickly (milliseconds)
- Independent: Don't depend on other tests or external systems
- Repeatable: Produce consistent results
- Self-validating: Clear pass/fail result
- Timely: Written alongside production code
Additional characteristics:
- Readable: Clear names and structure
- Focused: Test one specific behavior
- Isolated: Use mocks/stubs for dependencies
Rewriting in plainer words…
This answer doesn't lend itself to a diagram - it reads best . No credits were charged.
The model's verdict: “”
This answer is explained by a shared concept diagram -
open →
Point the redraw:
How well did you know this?
AI:
Saved in this browser - sign in to keep your review list.
How should your speech become text?
Listening… your words appear above as you speak - tap Stop when you're done.
Recording · cr - tap Stop & transcribe when you're done.
Transcribing with AI…
Voice:
Keep going - a few more words and AI can grade it.
Interview lens
Likely follow-ups, what you can say, and the weak answers to avoid.
Pro · $10/mo
28 of 32 Unit Testing answers are gated.
Full answers, code samples, AI explanations - simpler, deeper, or as an interactive diagram. Cancel anytime.
-
Full answers + code
-
AI explain - simpler, deeper, or visualized
-
1,000 AI credits / month
-
Cancel anytime
