FA-66429 / Airline fare rule evaluation / Member archive

Staying through a blackout blocks the return · case 04

A trip out on 11 December and back on 5 January is refused because the Christmas blackout falls in between.

Member previewVariant 4 · 3 implementations · 10 checks per implementation

Case contract

Input {'outbound','inbound' (ISO date or None),'blackouts':[[start, end] or [single date]]}. Blackouts apply only to each direction's departure date (inclusive ranges), not to days in between. Return the list of blocked directions in order 'OUT','IN', each at most once.

Why this case matters

Blackout rules restrict travel dates per direction; staying through a blackout period is permitted.

One recorded failure

Sample boundary fixture

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

Boundary fixture	Actual	Expected	Outcome
trip spans a blackout	`["IN"]`	`[]`	Failed

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