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Revalidation 304 merges present fields and retains absent fields · case 02

Revalidation 304 merges present fields and retains absent fields.

Member previewVariant 2 · 3 implementations · 4 checks per implementation

Case contract

Bounded offline decision model: revalidation 304 merges present fields and retains absent fields. 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 revalidation-304-merges-present-fields-and-retains-absent-fields 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 1	`{"etag": "b"}`	`{"etag": "b", "type": "text"}`	Failed

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