FA-85504 / Ride-hailing fare and surge pricing / Member archive

Weekday computed with a Sunday-first convention · case 04

Friday late-night pricing shows up on Saturdays.

Member previewVariant 4 · 3 implementations · 7 checks per implementation

Case contract

Pick the rate card for a pickup at ts_utc seconds (Unix epoch; day 0 was a Thursday) in a city at offset_min minutes from UTC. Local day index and minute-of-day come from the local time; weekday is Monday=0. Cards are checked in order, windows are half-open [start, end) minutes; a window with start > end wraps midnight and its after-midnight part belongs to the previous weekday. Holiday cards match local day indexes in holidays. Default "standard".

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: epoch weekday	`"rush"`	`"standard"`	Failed

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