FA-53982 / Accessibility interaction semantics / Member archive

Nontext semantic values enter the string property bridge · case 02

Nontext semantic values enter the string property bridge.

Member previewVariant 2 · 3 implementations · 6 checks per implementation

Case contract

Input [initial,revision,updates]. Updates [base_revision,next_revision,changes] apply atomically only if base matches current and next is greater; updates cannot change immutable id or role. Allowed dynamic keys name,description,value,help,language; unknown keys reject whole update. None deletes a property, empty string is retained; values must be strings or None. Return [state,revision,accepted_flags]. Copy initial. Revision advances even for no-op changes.

Why this case matters

Offline accessibility bridge model with explicit policy; useful for testing semantic API adapters independently of browser implementations.

One recorded failure

Sample boundary fixture

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

Boundary fixture	Actual	Expected	Outcome
contract fixture 5	`[{"help": "partial", "name": 42}, 3, [true]]`	`[{"name": "x"}, 2, [false]]`	Failed

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