FA-85762 / Ride-hailing fare and surge pricing / Member archive

Refund reduces the charge below the minimum fare · case 02

A short inefficient trip is refunded to almost nothing.

Member previewVariant 2 · 3 implementations · 7 checks per implementation

Case contract

Refund for inefficient routes: only when actual distance is more than 20% longer than optimal (actual*5 > optimal*6). Refund the whole extra distance at per_km (half up); refunds under 200 cents are not issued; the refund never takes the charge below the minimum fare. Return refund cents.

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: minimum fare floor	`700`	`0`	Failed

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