FA-95702 / Shipping rate zone lookup / Member archive

Rate shopping: service rejected at its weight limit · case 02

A parcel weighing exactly a service maximum is not offered that service.

Member previewVariant 2 · 3 implementations · 8 checks per implementation

Case contract

quotes [[carrier, service, price_cents, transit_days, max_lb]]. Eligible when weight <= max_lb, transit <= deadline and the carrier is not excluded (case-insensitive). Choose lowest price, then fewest days, then carrier, then service. Return [carrier, service, price] or None.

Why this case matters

Rate shopping chooses the cheapest eligible carrier service for a delivery promise.

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	`["FDX", "EXPRESS", 2500]`	`["UPX", "GROUND", 1200]`	Failed

MEMBER ARCHIVE

The complete case is available to members.

This record includes three runnable implementations, regression fixtures, execution results, and source hashes.

Member access is invitation-based. Sign in with your invited account to inspect the sources.