FA-95780 / Shipping rate zone lookup / Member archive

Fuel table: first step above table not charged · case 05

Prices at or just above the top band add nothing to the top percentage.

Member previewVariant 5 · 3 implementations · 8 checks per implementation

Case contract

prices [[week, diesel_cents]] published weekly (weeks may be missing). A ship week uses the latest price published at or before week - 2. bands [[lo, hi, basis_points]] are half-open [lo, hi). At or above the last band hi, add 25 bp for each started 5 cents at or above hi (the hi price itself adds one step). Below the table -> 0; no price -> None.

Why this case matters

Carriers index fuel surcharges to published diesel prices with a lag.

One recorded failure

Sample boundary fixture

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

Boundary fixture	Actual	Expected	Outcome
generated mix 7	`1500`	`1525`	Failed

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