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Deque scatter drain removes one extra undelivered value · case 03

Deque scatter drain removes one extra undelivered value.

Member previewVariant 3 · 3 implementations · 7 checks per implementation

Case contract

Drain a bounded deque into caller-provided segment capacities, respecting a total delivery limit. Stop at the first zero-length segment, exhausted input or exhausted limit. Preserve undispatched suffix and report consumed count and unused total budget.

Why this case matters

Controlled bounded deque implementation model with explicit storage and lifecycle observations.

One recorded failure

Sample boundary fixture

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

Boundary fixture	Actual	Expected	Outcome
0	`[[[3, 4], [5, 6]], [], 4, 2, 0]`	`[[[3, 4], [5, 6]], [7], 4, 2, 0]`	Failed

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