Automation Scripts · interview question

If you wrote a test around input assumptions, what should the test prove first?

Multiple choiceMediumchapter-1-curatedpremiumautomation-scriptsinput-assumptions

python

def validate_line(sku: str, quantity: int) -> None:
    if not sku:
        raise ValueError("sku is required")
    if quantity <= 0:
        raise ValueError("quantity must be positive")

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

Answer and explanation

Correct answer

A. 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.

Test yourself on Automation Scripts

A free test with instant, explained results. No account needed.

Start free test

All Automation Scripts questions →

If you wrote a test around input assumptions, what should the test prove first?

Correct answer

Why

More Automation Scripts questions