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Cache variants distinguish missing header from empty header · case 02

Cache variants distinguish missing header from empty header.

Member previewVariant 2 · 3 implementations · 4 checks per implementation

Case contract

Bounded offline decision model: cache variants distinguish missing header from empty header. Inputs are already validated protocol fields; the explicit fixtures define the supported policy, not a complete protocol implementation.

Why this case matters

This deterministic http caching model isolates the cache-variants-distinguish-missing-header-from-empty-header policy at a network component boundary.

One recorded failure

Sample boundary fixture

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

Boundary fixture	Actual	Expected	Outcome
fixture 3	`"x"`	`[true, "x"]`	Failed

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