Code Review · interview question

If you wrote a test around review quality, what should the test prove first?

Multiple choiceHardchapter-10-curatedpremiumcode-reviewreview-quality

python

def sync_orders(rows: list[dict[str, object]]) -> list[str]:
    return [str(row["id"]) for row in rows]

Delay clarity until production traffic reveals the edge case and then patch it under pressure.Keep review quality implicit so the script stays short and hope the next engineer infers the rule.Solve the symptom with comments only and avoid changing the code shape around review quality.That the rule behaves correctly at the boundary cases the lesson is trying to make explicit.

Answer and explanation

Correct answer

D. That the rule behaves correctly at the boundary cases the lesson is trying to make explicit.

Why

Good tests make the design safer to change because they lock in the meaningful behavior rather than surface-level implementation details.

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If you wrote a test around review quality, what should the test prove first?

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