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Asynchronous tree reveal path: Reveal opens a denied intermediate branch · case 02

Reveal opens a denied intermediate branch produces the wrong hierarchical widget state in a regression fixture.

Member previewVariant 2 · 3 implementations · 7 checks per implementation

Case contract

Reveal consumes an ordered root-to-target path. Already loaded branches are opened in order until the first missing child link, then exactly one load is requested. Focus moves only when the target is visible and the request generation is current. A denied branch stops reveal before opening it.

Why this case matters

Offline executable model of a hierarchical accessibility interaction; inputs are bounded and valid as stipulated. No browser, assistive technology, or normative ARIA conformance is claimed.

One recorded failure

Sample boundary fixture

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

Boundary fixture	Actual	Expected	Outcome
denied middle	`[["a", "b", "q", "r"], null, null, true, "c", []]`	`[["a", "q", "r"], null, "b", false, "q", ["b", "c"]]`	Failed

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This record includes three runnable implementations, regression fixtures, execution results, and source hashes.

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