FA-8368 / Keyboard accessibility / Member archive
Grid-cell keyboard movement: Up arrows change the column instead of the row · case 03
Up arrows change the column instead of the row.
Case contract
Arrow keys move one cell and clamp without wrapping; Home/End target row edges; Control additionally targets the first/last row.
Why this case matters
A deterministic model of grid-cell keyboard movement; this isolates one interface invariant without requiring a browser.
One recorded failure
Sample boundary fixtureThis sample comes from the broken implementation of a controlled reproducer.
| Boundary fixture | Actual | Expected | Outcome |
|---|---|---|---|
| up | [1, 2] | [0, 3] | Failed |
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This record includes three runnable implementations, regression fixtures, execution results, and source hashes.
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