FA-92917 / EV charging session scheduling / Member archive

Shared circuit current allocation: priority ordering · case 02

Low-priority vehicles charge while high-priority vehicles are paused.

Member previewVariant 2 · 3 implementations · 7 checks per implementation

Case contract

evs is a list of [id, max_a, priority]. An EV with max_a < 6 cannot be served. Eligible EVs are ordered by priority descending then id; each is admitted while 6*(admitted+1) <= limit_a. Admitted EVs are water-filled: repeatedly give floor(remaining/open) amps, fixing EVs whose max_a <= share at their max. Leftover amps go one each in admission order to EVs below max. Return [[id, amps]] for every EV sorted by id (0 = paused).

Why this case matters

Depot, workplace and public EV chargers schedule sessions against prices, circuit limits and departure deadlines; a wrong decision silently strands a driver or overloads a feeder.

One recorded failure

Sample boundary fixture

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

Boundary fixture	Actual	Expected	Outcome
regression: priority ordering	`[["EV0", 0], ["EV1", 6], ["EV2", 7], ["EV3", 6], ["EV4", 7], ["EV5", 6]]`	`[["EV0", 7], ["EV1", 7], ["EV2", 6], ["EV3", 6], ["EV4", 0], ["EV5", 6]]`	Failed

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