FA-95633 / Shipping rate zone lookup / Member archive

Flat vs weight: 70 lb flat box refused · case 03

A box weighing exactly 70 lb is refused flat-rate pricing.

Member previewVariant 3 · 3 implementations · 8 checks per implementation

Case contract

boxes [[name, L, W, H, price]] inner dims; an item fits a flat box in any orientation and flat boxes accept up to 70 lb. Weight price = weight_rates[lb-1] with lb = ceil(weight) (min 1) when lb is within the table. Choose the cheapest option; on equal price prefer flat boxes, then name. Return [option, price] or ["NONE", 0].

Why this case matters

Shippers compare flat-rate packaging with zone weight pricing.

One recorded failure

Sample boundary fixture

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

Boundary fixture	Actual	Expected	Outcome
generated mix 55	`["NONE", 0]`	`["MEDIUM", 1740]`	Failed

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