FA-92479 / HVAC thermostat control / Member archive

Schedule entries are scanned in the order they were entered · case 04

Editing an earlier period after a later one makes the lookup stop at the wrong event.

Member previewVariant 4 · 3 implementations · 8 checks per implementation

Case contract

Programmable thermostat weekly schedule. schedule is an unordered list of [day 0=Monday..6, minute_of_day, setpoint]; queries are [day, minute]. The active setpoint is that of the latest event at or before the query time within the week; if none, the last event of the week carries over from the previous week. Return the active setpoint per query.

Why this case matters

Residential and light-commercial thermostats make these decisions sample by sample; each defect changes equipment calls in a way that shows up as short cycling, comfort complaints or equipment stress.

One recorded failure

Sample boundary fixture

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

Boundary fixture	Actual	Expected	Outcome
regression: scenario 4	`[700, 700, 700, 700, 700, 720, 700]`	`[700, 700, 700, 700, 700, 600, 720]`	Failed

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