FA-37972 / Table interactions / Member archive

Table column auto-fit measurement: header measure policy · case 02

The table header measure policy result violates the stipulated table column auto-fit measurement contract.

Member previewVariant 2 · 3 implementations · 7 checks per implementation

Case contract

Auto-fit measures only this column’s visible measured cells, includes indentation and cell icons, optionally measures header text plus both controls, takes the widest content, adds two-sided padding and reserved icons, clamps bounds, and reports changes in either direction.

Why this case matters

An offline table UI model isolates table column auto-fit measurement, including adversarial row/column relationships.

One recorded failure

Sample boundary fixture

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

Boundary fixture	Actual	Expected	Outcome
header excluded	`{"changed": true, "clipped": false, "header_used": false, "samples": 1, "width": 32}`	`{"changed": false, "clipped": false, "header_used": false, "samples": 1, "width": 4}`	Failed

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

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