Vibe codingHardvc-g153

Subject Ai test reviewLevel Mid–Senior~16 minCommon in Algorithms & data structures interviewsIndustries Software development

Question

An AI agent wrote this pytest for a function that's supposed to raise on invalid input:

python

1def test_rejects_negative_age():2    try:3        result = create_user(name="x", age=-5)4        assert result is not None5    except Exception:6        pass  # expected to raise

The test passes. Explain why this test will pass whether the validation works or not, and write the version that actually verifies the behavior.

What a strong answer looks like

Treat the AI’s output as a draft to verify, not an answer to trust. Name the specific flaw and the input that triggers it, say how you’d catch it — tests, edge cases, reading critically — and how you’d re-prompt or decompose to get it right.

Learn the concepts

Describe your solution

Vibe coding: describe the solution in plain language (or narrate it) and the coach grades your approach. Generating runnable code from your description is coming next.

Run or narrate your approach, then ask the coach.