FA-24964 / Filter interfaces / Member archive

Facet search uses case-insensitive substring matching · case 04

Facet search uses case-insensitive substring matching is violated by the widget projection.

Member previewVariant 4 · 3 implementations · 10 checks per implementation

Case contract

Searching inside a facet section affects visible options only; selected hidden choices remain part of the filter and empty query restores the full option list. This example checks: Facet search uses case-insensitive substring matching.

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	`{"case-fold": ["Amber"], "hidden-count": 0, "no-option-message": false, "search-all-target": ["Amber", "Black"], "search-clear": ["Amber", "Blue", "Black"], "selected-preserve": ["Blue"]}`	`{"case-fold": ["Amber", "Blue", "Black"], "hidden-count": 0, "no-option-message": false, "search-all-target": ["Amber", "Black"], "search-clear": ["Amber", "Blue", "Black"], "selected-preserve": ["Blue"]}`	Failed

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