FA-53925 / Accessibility interaction semantics / Member archive

Later reading-flow declarations replace the first override · case 05

Later reading-flow declarations replace the first override.

Member previewVariant 5 · 3 implementations · 8 checks per implementation

Case contract

Input [natural_ids,edges,excluded,start] where edges are directed reading-flow overrides. Keep unique natural IDs in original order excluding excluded IDs. Admit edges between eligible distinct IDs; first outgoing edge wins. Reading starts at specified eligible ID otherwise first eligible. Follow override if target unvisited; otherwise take earliest unvisited natural node. Include each eligible object exactly once, prevent cycles, and return list of IDs. Explicit start does not remove earlier unvisited nodes.

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 2	`["a", "b", "c"]`	`["a", "c", "b"]`	Failed

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