FA-93254 / EV charging session scheduling / Member archive

Contiguous cheap charging blocks: fallback count · case 04

Fallback adds more slots than were needed.

Member previewVariant 4 · 3 implementations · 7 checks per implementation

Case contract

Slots with price <= threshold form runs of consecutive slots; runs shorter than min_len are ignored to avoid contactor cycling. Slots of qualifying runs are taken chronologically until need_slots are chosen. If still short, the remaining cheapest unchosen slots (ties: earlier) are added regardless of runs and fallback is True. Return [sorted slots, fallback].

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: fallback count	`[[0, 1, 2, 4, 5, 6], true]`	`[[0, 4, 5, 6], true]`	Failed

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