FA-25874 / Filter interfaces / Member archive

Moving a linked lower bound translates the upper bound by the same delta · case 04

Moving a linked lower bound translates the upper bound by the same delta is violated by the widget projection.

Member previewVariant 4 · 3 implementations · 10 checks per implementation

Case contract

Editing one numeric endpoint clamps only when the range lock is enabled; linked-width edits translate the opposite endpoint, and unbounded sides remain unbounded. This example checks: Moving a linked lower bound translates the upper bound by the same delta.

Why this case matters

Filter-widget state and serialization must preserve user constraints while the view changes.

One recorded failure

Sample boundary fixture

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

Boundary fixture	Actual	Expected	Outcome
contract fixture 0	`{"link-enabled": false, "linked-lower": null, "linked-upper": 1, "lower-clamp": 1, "reversal-warning": false, "upper-clamp": 1}`	`{"link-enabled": false, "linked-lower": null, "linked-upper": null, "lower-clamp": 1, "reversal-warning": false, "upper-clamp": 1}`	Failed

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