FA-8950 / Table interactions / Member archive

Multi-column sort interaction: Single-sort activation retains other sort priorities · case 05

Single-sort activation retains other sort priorities.

Member previewVariant 5 · 3 implementations · 13 checks per implementation

Case contract

New sort is ascending; activation cycles ascending to descending to removed when allowed; single mode replaces all sorts; multi mode preserves priorities when changing direction.

Why this case matters

A deterministic model of multi-column sort interaction; 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
reverse	`[["a", "asc"], ["a", "desc"]]`	`[["a", "desc"]]`	Failed

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