FA-8124 / Menu interactions / Member archive

Menu item activation: Checked menu checkboxes cannot toggle off · case 04

Checked menu checkboxes cannot toggle off.

Member previewVariant 4 · 3 implementations · 12 checks per implementation

Case contract

Disabled items and nonactivation keys do nothing; click, Enter and Space activate; submenu transfers focus; checks toggle; radios select; leaf commands close.

Why this case matters

A deterministic model of menu item activation; this isolates one interface invariant without requiring a browser.

One recorded failure

Sample boundary fixture

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

Boundary fixture	Actual	Expected	Outcome
checkbox off	`[true, true, "change"]`	`[true, false, "change"]`	Failed

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

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