FA-85580 / Ride-hailing fare and surge pricing / Member archive

Quest bonus paid on every trip after the threshold · case 05

After the tenth trip each further trip repeats the 10-trip bonus.

Member previewVariant 5 · 3 implementations · 7 checks per implementation

Case contract

Driver pay per trip in cents: the surged core fare (core x surge tenths, half up) minus the commission percentage (floored), raised to min_pay if lower; tolls and tips pass through untouched and are outside commission and the minimum; the booking fee is platform revenue. A quest bonus is paid when this trip is exactly the Nth trip for a quest threshold N (trips_before + 1 == N). Return pay and bonus.

Why this case matters

Ride-hailing prices are computed per trip at scale; ordering, unit and boundary slips become systematic over- or under-charging.

One recorded failure

Sample boundary fixture

This sample comes from the broken implementation of a controlled reproducer.

Boundary fixture	Actual	Expected	Outcome
regression: quest crossing	`{"bonus": 4000, "pay": 600}`	`{"bonus": 2500, "pay": 600}`	Failed

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