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Code RoomException test that always passes
HardPrep Room Coding #4111

Exception test that always passes

Vibe & agenticAlgorithms & data structuresMid–Senior~16 min

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

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

Implement
validate_new_user(name: str, age: int) → str
Examples
in["x",-5]out"age_negative"
in["x",30]out"ok"
in["",30]out"name_required"
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.

0:00 of about 16 min

Vibe & agentic: describe the solution in plain language (or narrate it) and the coach grades your approach.

Which questions mattered is sealed until you submit. Telling you now would just be handing over the edge cases.