FA-93909 / Shift rostering labor rules / Member archive

Nested duplicate segment truncates the merged work block · case 04

A short duplicate punch inside a long segment cuts the block, creating a fake split and short spread.

Member previewVariant 4 · 3 implementations · 8 checks per implementation

Case contract

Worked segments [start, end] of one workday (unordered, possibly overlapping) and a minimum wage in cents. Overlapping or touching segments merge. Spread is last end minus first start. Each gap longer than 60 minutes is a split. A spread over 600 minutes earns one hour of minimum wage and replaces any split premium; otherwise each split earns min_wage // 2, for at most two splits. Return [spread, splits, premium].

Why this case matters

Spread-of-hours and split-shift premiums are frequent roster-pay rules that depend on correct interval handling.

One recorded failure

Sample boundary fixture

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

Boundary fixture	Actual	Expected	Outcome
regression: merge extension shrinks 1	`[260, 0, 0]`	`[540, 0, 0]`	Failed

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