FA-8835 / Selection controls / Member archive

Radio group selection ownership: Removing an option retains it and removes its siblings · case 05

Removing an option retains it and removes its siblings.

Member previewVariant 5 · 3 implementations · 14 checks per implementation

Case contract

Radio activation replaces selection with an existing enabled option and never toggles it off; required groups cannot clear; selected removal uses first remaining option only when required.

Why this case matters

A deterministic model of radio group selection ownership; 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
remove other	`[["b"], null]`	`[["a", "c"], "a"]`	Failed

MEMBER ARCHIVE

The complete case is available to members.

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

Member access is invitation-based. Sign in with your invited account to inspect the sources.