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Shrinking cache capacity evicts only one excess entry · case 04

Shrinking cache capacity evicts only one excess entry.

Member previewVariant 4 · 3 implementations · 4 checks per implementation

Case contract

Capacity is a nonnegative integer. Retain at most capacity keys from the most-recent end of the ordered cache.

Why this case matters

A deterministic cache state transformation. Inputs are copied or treated as immutable; no remote storage, real clock, or concurrent interleaving is simulated.

One recorded failure

Sample boundary fixture

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

Boundary fixture	Actual	Expected	Outcome
fixture 1	`["b", "c", "d"]`	`["d"]`	Failed

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