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FA-37061 / Table interactions / Open access

Table row checkbox reconciliation: empty header check · case 01

The table empty header check result violates the stipulated table row checkbox reconciliation contract.

Verified by executionVariant 1 · 8 checks per implementationDownload source bundle ↓JSON ↗

ROOT CAUSE

The empty header check decision uses 'len(checked)==len(eligible)' instead of 'bool(eligible) and len(checked)==len(eligible)'.

THE FAILURE

The empty header check decision uses 'len(checked)==len(eligible)' instead of 'bool(eligible) and len(checked)==len(eligible)'.

Unsuccessful approach: The attempted repair 'bool(checked)' still loses a required part of the table contract.

Case contract

Checkbox header state concerns enabled loaded page rows; explicit selections use stable row IDs and survive pagination, global select-all uses exclusions, stale IDs are removed, and empty eligible pages are disabled and unchecked.

Why this case matters

An offline table UI model isolates table row checkbox reconciliation, including adversarial row/column relationships.

1 / The failure

Exit 1
"""Failure Map reference implementation. Python standard library only."""
import json

N = 1
observations = []
def solve(rows, selected, page, disabled, mode, excluded):
    known={r['id'] for r in rows}
    eligible=[r['id'] for r in rows if r['id'] in page and r['id'] not in disabled]
    active=set(selected) & known
    checked=[r for r in eligible if (r not in excluded if mode=='all' else r in active)]
    return {'eligible':eligible,'checked':checked,'all':len(checked)==len(eligible),'mixed':0<len(checked)<len(eligible),'disabled':not eligible,'select_page':sorted(active|set(eligible)),'clear_page':sorted(active-set(eligible)),'off_page':sorted(active-set(page)),'excluded':sorted(set(excluded)&known),'count':len(known-set(excluded)) if mode=='all' else len(active)}
def check(label, actual, expected):
    observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
if N == 1:
    check('partial page', solve([{'id':'a'},{'id':'b'},{'id':'c'},{'id':'d'+str(1)}], ['a','c','stale'], ['a','b'], [], 'explicit', []), {'eligible': ['a', 'b'], 'checked': ['a'], 'all': False, 'mixed': True, 'disabled': False, 'select_page': ['a', 'b', 'c'], 'clear_page': ['c'], 'off_page': ['c'], 'excluded': [], 'count': 2})
    check('disabled row', solve([{'id':'a'},{'id':'b'}], ['a','b'], ['a','b'], ['b'], 'explicit', []), {'eligible': ['a'], 'checked': ['a'], 'all': True, 'mixed': False, 'disabled': False, 'select_page': ['a', 'b'], 'clear_page': ['b'], 'off_page': [], 'excluded': [], 'count': 2})
    check('global mode', solve([{'id':'a'},{'id':'b'},{'id':'c'}], [], ['a','b'], [], 'all', ['b','stale']), {'eligible': ['a', 'b'], 'checked': ['a'], 'all': False, 'mixed': True, 'disabled': False, 'select_page': ['a', 'b'], 'clear_page': [], 'off_page': [], 'excluded': ['b'], 'count': 2})
    check('empty page', solve([{'id':'a'}], ['a'], [], [], 'explicit', []), {'eligible': [], 'checked': [], 'all': False, 'mixed': False, 'disabled': True, 'select_page': ['a'], 'clear_page': ['a'], 'off_page': ['a'], 'excluded': [], 'count': 1})
    check('none checked', solve([{'id':'a'},{'id':'b'}], [], ['a','b'], [], 'explicit', []), {'eligible': ['a', 'b'], 'checked': [], 'all': False, 'mixed': False, 'disabled': False, 'select_page': ['a', 'b'], 'clear_page': [], 'off_page': [], 'excluded': [], 'count': 0})
    check('full checked', solve([{'id':'a'},{'id':'b'}], ['a','b'], ['a','b'], [], 'explicit', []), {'eligible': ['a', 'b'], 'checked': ['a', 'b'], 'all': True, 'mixed': False, 'disabled': False, 'select_page': ['a', 'b'], 'clear_page': [], 'off_page': [], 'excluded': [], 'count': 2})
    check('disabled unselected', solve([{'id':'a'},{'id':'b'}], [], ['a','b'], ['b'], 'explicit', []), {'eligible': ['a'], 'checked': [], 'all': False, 'mixed': False, 'disabled': False, 'select_page': ['a'], 'clear_page': [], 'off_page': [], 'excluded': [], 'count': 0})

if N == 2:
    check('partial page', solve([{'id':'a'},{'id':'b'},{'id':'c'},{'id':'d'+str(2)}], ['a','c','stale'], ['a','b'], [], 'explicit', []), {'eligible': ['a', 'b'], 'checked': ['a'], 'all': False, 'mixed': True, 'disabled': False, 'select_page': ['a', 'b', 'c'], 'clear_page': ['c'], 'off_page': ['c'], 'excluded': [], 'count': 2})
    check('disabled row', solve([{'id':'a'},{'id':'b'}], ['a','b'], ['a','b'], ['b'], 'explicit', []), {'eligible': ['a'], 'checked': ['a'], 'all': True, 'mixed': False, 'disabled': False, 'select_page': ['a', 'b'], 'clear_page': ['b'], 'off_page': [], 'excluded': [], 'count': 2})
    check('global mode', solve([{'id':'a'},{'id':'b'},{'id':'c'}], [], ['a','b'], [], 'all', ['b','stale']), {'eligible': ['a', 'b'], 'checked': ['a'], 'all': False, 'mixed': True, 'disabled': False, 'select_page': ['a', 'b'], 'clear_page': [], 'off_page': [], 'excluded': ['b'], 'count': 2})
    check('empty page', solve([{'id':'a'}], ['a'], [], [], 'explicit', []), {'eligible': [], 'checked': [], 'all': False, 'mixed': False, 'disabled': True, 'select_page': ['a'], 'clear_page': ['a'], 'off_page': ['a'], 'excluded': [], 'count': 1})
    check('none checked', solve([{'id':'a'},{'id':'b'}], [], ['a','b'], [], 'explicit', []), {'eligible': ['a', 'b'], 'checked': [], 'all': False, 'mixed': False, 'disabled': False, 'select_page': ['a', 'b'], 'clear_page': [], 'off_page': [], 'excluded': [], 'count': 0})
    check('full checked', solve([{'id':'a'},{'id':'b'}], ['a','b'], ['a','b'], [], 'explicit', []), {'eligible': ['a', 'b'], 'checked': ['a', 'b'], 'all': True, 'mixed': False, 'disabled': False, 'select_page': ['a', 'b'], 'clear_page': [], 'off_page': [], 'excluded': [], 'count': 2})
    check('disabled unselected', solve([{'id':'a'},{'id':'b'}], [], ['a','b'], ['b'], 'explicit', []), {'eligible': ['a'], 'checked': [], 'all': False, 'mixed': False, 'disabled': False, 'select_page': ['a'], 'clear_page': [], 'off_page': [], 'excluded': [], 'count': 0})

if N == 3:
    check('partial page', solve([{'id':'a'},{'id':'b'},{'id':'c'},{'id':'d'+str(3)}], ['a','c','stale'], ['a','b'], [], 'explicit', []), {'eligible': ['a', 'b'], 'checked': ['a'], 'all': False, 'mixed': True, 'disabled': False, 'select_page': ['a', 'b', 'c'], 'clear_page': ['c'], 'off_page': ['c'], 'excluded': [], 'count': 2})
    check('disabled row', solve([{'id':'a'},{'id':'b'}], ['a','b'], ['a','b'], ['b'], 'explicit', []), {'eligible': ['a'], 'checked': ['a'], 'all': True, 'mixed': False, 'disabled': False, 'select_page': ['a', 'b'], 'clear_page': ['b'], 'off_page': [], 'excluded': [], 'count': 2})
    check('global mode', solve([{'id':'a'},{'id':'b'},{'id':'c'}], [], ['a','b'], [], 'all', ['b','stale']), {'eligible': ['a', 'b'], 'checked': ['a'], 'all': False, 'mixed': True, 'disabled': False, 'select_page': ['a', 'b'], 'clear_page': [], 'off_page': [], 'excluded': ['b'], 'count': 2})
    check('empty page', solve([{'id':'a'}], ['a'], [], [], 'explicit', []), {'eligible': [], 'checked': [], 'all': False, 'mixed': False, 'disabled': True, 'select_page': ['a'], 'clear_page': ['a'], 'off_page': ['a'], 'excluded': [], 'count': 1})
    check('none checked', solve([{'id':'a'},{'id':'b'}], [], ['a','b'], [], 'explicit', []), {'eligible': ['a', 'b'], 'checked': [], 'all': False, 'mixed': False, 'disabled': False, 'select_page': ['a', 'b'], 'clear_page': [], 'off_page': [], 'excluded': [], 'count': 0})
    check('full checked', solve([{'id':'a'},{'id':'b'}], ['a','b'], ['a','b'], [], 'explicit', []), {'eligible': ['a', 'b'], 'checked': ['a', 'b'], 'all': True, 'mixed': False, 'disabled': False, 'select_page': ['a', 'b'], 'clear_page': [], 'off_page': [], 'excluded': [], 'count': 2})
    check('disabled unselected', solve([{'id':'a'},{'id':'b'}], [], ['a','b'], ['b'], 'explicit', []), {'eligible': ['a'], 'checked': [], 'all': False, 'mixed': False, 'disabled': False, 'select_page': ['a'], 'clear_page': [], 'off_page': [], 'excluded': [], 'count': 0})

if N == 4:
    check('partial page', solve([{'id':'a'},{'id':'b'},{'id':'c'},{'id':'d'+str(4)}], ['a','c','stale'], ['a','b'], [], 'explicit', []), {'eligible': ['a', 'b'], 'checked': ['a'], 'all': False, 'mixed': True, 'disabled': False, 'select_page': ['a', 'b', 'c'], 'clear_page': ['c'], 'off_page': ['c'], 'excluded': [], 'count': 2})
    check('disabled row', solve([{'id':'a'},{'id':'b'}], ['a','b'], ['a','b'], ['b'], 'explicit', []), {'eligible': ['a'], 'checked': ['a'], 'all': True, 'mixed': False, 'disabled': False, 'select_page': ['a', 'b'], 'clear_page': ['b'], 'off_page': [], 'excluded': [], 'count': 2})
    check('global mode', solve([{'id':'a'},{'id':'b'},{'id':'c'}], [], ['a','b'], [], 'all', ['b','stale']), {'eligible': ['a', 'b'], 'checked': ['a'], 'all': False, 'mixed': True, 'disabled': False, 'select_page': ['a', 'b'], 'clear_page': [], 'off_page': [], 'excluded': ['b'], 'count': 2})
    check('empty page', solve([{'id':'a'}], ['a'], [], [], 'explicit', []), {'eligible': [], 'checked': [], 'all': False, 'mixed': False, 'disabled': True, 'select_page': ['a'], 'clear_page': ['a'], 'off_page': ['a'], 'excluded': [], 'count': 1})
    check('none checked', solve([{'id':'a'},{'id':'b'}], [], ['a','b'], [], 'explicit', []), {'eligible': ['a', 'b'], 'checked': [], 'all': False, 'mixed': False, 'disabled': False, 'select_page': ['a', 'b'], 'clear_page': [], 'off_page': [], 'excluded': [], 'count': 0})
    check('full checked', solve([{'id':'a'},{'id':'b'}], ['a','b'], ['a','b'], [], 'explicit', []), {'eligible': ['a', 'b'], 'checked': ['a', 'b'], 'all': True, 'mixed': False, 'disabled': False, 'select_page': ['a', 'b'], 'clear_page': [], 'off_page': [], 'excluded': [], 'count': 2})
    check('disabled unselected', solve([{'id':'a'},{'id':'b'}], [], ['a','b'], ['b'], 'explicit', []), {'eligible': ['a'], 'checked': [], 'all': False, 'mixed': False, 'disabled': False, 'select_page': ['a'], 'clear_page': [], 'off_page': [], 'excluded': [], 'count': 0})

if N == 5:
    check('partial page', solve([{'id':'a'},{'id':'b'},{'id':'c'},{'id':'d'+str(5)}], ['a','c','stale'], ['a','b'], [], 'explicit', []), {'eligible': ['a', 'b'], 'checked': ['a'], 'all': False, 'mixed': True, 'disabled': False, 'select_page': ['a', 'b', 'c'], 'clear_page': ['c'], 'off_page': ['c'], 'excluded': [], 'count': 2})
    check('disabled row', solve([{'id':'a'},{'id':'b'}], ['a','b'], ['a','b'], ['b'], 'explicit', []), {'eligible': ['a'], 'checked': ['a'], 'all': True, 'mixed': False, 'disabled': False, 'select_page': ['a', 'b'], 'clear_page': ['b'], 'off_page': [], 'excluded': [], 'count': 2})
    check('global mode', solve([{'id':'a'},{'id':'b'},{'id':'c'}], [], ['a','b'], [], 'all', ['b','stale']), {'eligible': ['a', 'b'], 'checked': ['a'], 'all': False, 'mixed': True, 'disabled': False, 'select_page': ['a', 'b'], 'clear_page': [], 'off_page': [], 'excluded': ['b'], 'count': 2})
    check('empty page', solve([{'id':'a'}], ['a'], [], [], 'explicit', []), {'eligible': [], 'checked': [], 'all': False, 'mixed': False, 'disabled': True, 'select_page': ['a'], 'clear_page': ['a'], 'off_page': ['a'], 'excluded': [], 'count': 1})
    check('none checked', solve([{'id':'a'},{'id':'b'}], [], ['a','b'], [], 'explicit', []), {'eligible': ['a', 'b'], 'checked': [], 'all': False, 'mixed': False, 'disabled': False, 'select_page': ['a', 'b'], 'clear_page': [], 'off_page': [], 'excluded': [], 'count': 0})
    check('full checked', solve([{'id':'a'},{'id':'b'}], ['a','b'], ['a','b'], [], 'explicit', []), {'eligible': ['a', 'b'], 'checked': ['a', 'b'], 'all': True, 'mixed': False, 'disabled': False, 'select_page': ['a', 'b'], 'clear_page': [], 'off_page': [], 'excluded': [], 'count': 2})
    check('disabled unselected', solve([{'id':'a'},{'id':'b'}], [], ['a','b'], ['b'], 'explicit', []), {'eligible': ['a'], 'checked': [], 'all': False, 'mixed': False, 'disabled': False, 'select_page': ['a'], 'clear_page': [], 'off_page': [], 'excluded': [], 'count': 0})

check('variant selected identity', solve([{'id':'a'},{'id':'b'+str(N)}], ['b'+str(N)], ['a','b'+str(N)], [], 'explicit', []), {'eligible':['a','b'+str(N)], 'checked':['b'+str(N)], 'all':False, 'mixed':True, 'disabled':False, 'select_page':['a','b'+str(N)], 'clear_page':[], 'off_page':[], 'excluded':[], 'count':1})
print(json.dumps({"observations": observations, "passed": all(x["passed"] for x in observations)}, ensure_ascii=False))
raise SystemExit(0 if all(x["passed"] for x in observations) else 1)
Boundary fixtureActualExpectedOutcome
partial page{'all': False, 'checked': ['a'], 'clear_page': ['c'], 'count': 2, 'disabled': False, 'eligible': ['a', 'b'], 'excluded': [], 'mixed': True, 'off_page': ['c'], 'select_page': ['a', 'b', 'c']}{'all': False, 'checked': ['a'], 'clear_page': ['c'], 'count': 2, 'disabled': False, 'eligible': ['a', 'b'], 'excluded': [], 'mixed': True, 'off_page': ['c'], 'select_page': ['a', 'b', 'c']}Passed
disabled row{'all': True, 'checked': ['a'], 'clear_page': ['b'], 'count': 2, 'disabled': False, 'eligible': ['a'], 'excluded': [], 'mixed': False, 'off_page': [], 'select_page': ['a', 'b']}{'all': True, 'checked': ['a'], 'clear_page': ['b'], 'count': 2, 'disabled': False, 'eligible': ['a'], 'excluded': [], 'mixed': False, 'off_page': [], 'select_page': ['a', 'b']}Passed
global mode{'all': False, 'checked': ['a'], 'clear_page': [], 'count': 2, 'disabled': False, 'eligible': ['a', 'b'], 'excluded': ['b'], 'mixed': True, 'off_page': [], 'select_page': ['a', 'b']}{'all': False, 'checked': ['a'], 'clear_page': [], 'count': 2, 'disabled': False, 'eligible': ['a', 'b'], 'excluded': ['b'], 'mixed': True, 'off_page': [], 'select_page': ['a', 'b']}Passed
empty page{'all': True, 'checked': [], 'clear_page': ['a'], 'count': 1, 'disabled': True, 'eligible': [], 'excluded': [], 'mixed': False, 'off_page': ['a'], 'select_page': ['a']}{'all': False, 'checked': [], 'clear_page': ['a'], 'count': 1, 'disabled': True, 'eligible': [], 'excluded': [], 'mixed': False, 'off_page': ['a'], 'select_page': ['a']}Failed
none checked{'all': False, 'checked': [], 'clear_page': [], 'count': 0, 'disabled': False, 'eligible': ['a', 'b'], 'excluded': [], 'mixed': False, 'off_page': [], 'select_page': ['a', 'b']}{'all': False, 'checked': [], 'clear_page': [], 'count': 0, 'disabled': False, 'eligible': ['a', 'b'], 'excluded': [], 'mixed': False, 'off_page': [], 'select_page': ['a', 'b']}Passed
full checked{'all': True, 'checked': ['a', 'b'], 'clear_page': [], 'count': 2, 'disabled': False, 'eligible': ['a', 'b'], 'excluded': [], 'mixed': False, 'off_page': [], 'select_page': ['a', 'b']}{'all': True, 'checked': ['a', 'b'], 'clear_page': [], 'count': 2, 'disabled': False, 'eligible': ['a', 'b'], 'excluded': [], 'mixed': False, 'off_page': [], 'select_page': ['a', 'b']}Passed
disabled unselected{'all': False, 'checked': [], 'clear_page': [], 'count': 0, 'disabled': False, 'eligible': ['a'], 'excluded': [], 'mixed': False, 'off_page': [], 'select_page': ['a']}{'all': False, 'checked': [], 'clear_page': [], 'count': 0, 'disabled': False, 'eligible': ['a'], 'excluded': [], 'mixed': False, 'off_page': [], 'select_page': ['a']}Passed
variant selected identity{'all': False, 'checked': ['b1'], 'clear_page': [], 'count': 1, 'disabled': False, 'eligible': ['a', 'b1'], 'excluded': [], 'mixed': True, 'off_page': [], 'select_page': ['a', 'b1']}{'all': False, 'checked': ['b1'], 'clear_page': [], 'count': 1, 'disabled': False, 'eligible': ['a', 'b1'], 'excluded': [], 'mixed': True, 'off_page': [], 'select_page': ['a', 'b1']}Passed

SHA-256 / 0d39aaae62be5fd974e824ea334e0fbf064128006647e1a552fe410724bd112b

2 / The unsuccessful fix

Exit 1
"""Failure Map reference implementation. Python standard library only."""
import json

N = 1
observations = []
def solve(rows, selected, page, disabled, mode, excluded):
    known={r['id'] for r in rows}
    eligible=[r['id'] for r in rows if r['id'] in page and r['id'] not in disabled]
    active=set(selected) & known
    checked=[r for r in eligible if (r not in excluded if mode=='all' else r in active)]
    return {'eligible':eligible,'checked':checked,'all':bool(checked),'mixed':0<len(checked)<len(eligible),'disabled':not eligible,'select_page':sorted(active|set(eligible)),'clear_page':sorted(active-set(eligible)),'off_page':sorted(active-set(page)),'excluded':sorted(set(excluded)&known),'count':len(known-set(excluded)) if mode=='all' else len(active)}
def check(label, actual, expected):
    observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
if N == 1:
    check('partial page', solve([{'id':'a'},{'id':'b'},{'id':'c'},{'id':'d'+str(1)}], ['a','c','stale'], ['a','b'], [], 'explicit', []), {'eligible': ['a', 'b'], 'checked': ['a'], 'all': False, 'mixed': True, 'disabled': False, 'select_page': ['a', 'b', 'c'], 'clear_page': ['c'], 'off_page': ['c'], 'excluded': [], 'count': 2})
    check('disabled row', solve([{'id':'a'},{'id':'b'}], ['a','b'], ['a','b'], ['b'], 'explicit', []), {'eligible': ['a'], 'checked': ['a'], 'all': True, 'mixed': False, 'disabled': False, 'select_page': ['a', 'b'], 'clear_page': ['b'], 'off_page': [], 'excluded': [], 'count': 2})
    check('global mode', solve([{'id':'a'},{'id':'b'},{'id':'c'}], [], ['a','b'], [], 'all', ['b','stale']), {'eligible': ['a', 'b'], 'checked': ['a'], 'all': False, 'mixed': True, 'disabled': False, 'select_page': ['a', 'b'], 'clear_page': [], 'off_page': [], 'excluded': ['b'], 'count': 2})
    check('empty page', solve([{'id':'a'}], ['a'], [], [], 'explicit', []), {'eligible': [], 'checked': [], 'all': False, 'mixed': False, 'disabled': True, 'select_page': ['a'], 'clear_page': ['a'], 'off_page': ['a'], 'excluded': [], 'count': 1})
    check('none checked', solve([{'id':'a'},{'id':'b'}], [], ['a','b'], [], 'explicit', []), {'eligible': ['a', 'b'], 'checked': [], 'all': False, 'mixed': False, 'disabled': False, 'select_page': ['a', 'b'], 'clear_page': [], 'off_page': [], 'excluded': [], 'count': 0})
    check('full checked', solve([{'id':'a'},{'id':'b'}], ['a','b'], ['a','b'], [], 'explicit', []), {'eligible': ['a', 'b'], 'checked': ['a', 'b'], 'all': True, 'mixed': False, 'disabled': False, 'select_page': ['a', 'b'], 'clear_page': [], 'off_page': [], 'excluded': [], 'count': 2})
    check('disabled unselected', solve([{'id':'a'},{'id':'b'}], [], ['a','b'], ['b'], 'explicit', []), {'eligible': ['a'], 'checked': [], 'all': False, 'mixed': False, 'disabled': False, 'select_page': ['a'], 'clear_page': [], 'off_page': [], 'excluded': [], 'count': 0})

if N == 2:
    check('partial page', solve([{'id':'a'},{'id':'b'},{'id':'c'},{'id':'d'+str(2)}], ['a','c','stale'], ['a','b'], [], 'explicit', []), {'eligible': ['a', 'b'], 'checked': ['a'], 'all': False, 'mixed': True, 'disabled': False, 'select_page': ['a', 'b', 'c'], 'clear_page': ['c'], 'off_page': ['c'], 'excluded': [], 'count': 2})
    check('disabled row', solve([{'id':'a'},{'id':'b'}], ['a','b'], ['a','b'], ['b'], 'explicit', []), {'eligible': ['a'], 'checked': ['a'], 'all': True, 'mixed': False, 'disabled': False, 'select_page': ['a', 'b'], 'clear_page': ['b'], 'off_page': [], 'excluded': [], 'count': 2})
    check('global mode', solve([{'id':'a'},{'id':'b'},{'id':'c'}], [], ['a','b'], [], 'all', ['b','stale']), {'eligible': ['a', 'b'], 'checked': ['a'], 'all': False, 'mixed': True, 'disabled': False, 'select_page': ['a', 'b'], 'clear_page': [], 'off_page': [], 'excluded': ['b'], 'count': 2})
    check('empty page', solve([{'id':'a'}], ['a'], [], [], 'explicit', []), {'eligible': [], 'checked': [], 'all': False, 'mixed': False, 'disabled': True, 'select_page': ['a'], 'clear_page': ['a'], 'off_page': ['a'], 'excluded': [], 'count': 1})
    check('none checked', solve([{'id':'a'},{'id':'b'}], [], ['a','b'], [], 'explicit', []), {'eligible': ['a', 'b'], 'checked': [], 'all': False, 'mixed': False, 'disabled': False, 'select_page': ['a', 'b'], 'clear_page': [], 'off_page': [], 'excluded': [], 'count': 0})
    check('full checked', solve([{'id':'a'},{'id':'b'}], ['a','b'], ['a','b'], [], 'explicit', []), {'eligible': ['a', 'b'], 'checked': ['a', 'b'], 'all': True, 'mixed': False, 'disabled': False, 'select_page': ['a', 'b'], 'clear_page': [], 'off_page': [], 'excluded': [], 'count': 2})
    check('disabled unselected', solve([{'id':'a'},{'id':'b'}], [], ['a','b'], ['b'], 'explicit', []), {'eligible': ['a'], 'checked': [], 'all': False, 'mixed': False, 'disabled': False, 'select_page': ['a'], 'clear_page': [], 'off_page': [], 'excluded': [], 'count': 0})

if N == 3:
    check('partial page', solve([{'id':'a'},{'id':'b'},{'id':'c'},{'id':'d'+str(3)}], ['a','c','stale'], ['a','b'], [], 'explicit', []), {'eligible': ['a', 'b'], 'checked': ['a'], 'all': False, 'mixed': True, 'disabled': False, 'select_page': ['a', 'b', 'c'], 'clear_page': ['c'], 'off_page': ['c'], 'excluded': [], 'count': 2})
    check('disabled row', solve([{'id':'a'},{'id':'b'}], ['a','b'], ['a','b'], ['b'], 'explicit', []), {'eligible': ['a'], 'checked': ['a'], 'all': True, 'mixed': False, 'disabled': False, 'select_page': ['a', 'b'], 'clear_page': ['b'], 'off_page': [], 'excluded': [], 'count': 2})
    check('global mode', solve([{'id':'a'},{'id':'b'},{'id':'c'}], [], ['a','b'], [], 'all', ['b','stale']), {'eligible': ['a', 'b'], 'checked': ['a'], 'all': False, 'mixed': True, 'disabled': False, 'select_page': ['a', 'b'], 'clear_page': [], 'off_page': [], 'excluded': ['b'], 'count': 2})
    check('empty page', solve([{'id':'a'}], ['a'], [], [], 'explicit', []), {'eligible': [], 'checked': [], 'all': False, 'mixed': False, 'disabled': True, 'select_page': ['a'], 'clear_page': ['a'], 'off_page': ['a'], 'excluded': [], 'count': 1})
    check('none checked', solve([{'id':'a'},{'id':'b'}], [], ['a','b'], [], 'explicit', []), {'eligible': ['a', 'b'], 'checked': [], 'all': False, 'mixed': False, 'disabled': False, 'select_page': ['a', 'b'], 'clear_page': [], 'off_page': [], 'excluded': [], 'count': 0})
    check('full checked', solve([{'id':'a'},{'id':'b'}], ['a','b'], ['a','b'], [], 'explicit', []), {'eligible': ['a', 'b'], 'checked': ['a', 'b'], 'all': True, 'mixed': False, 'disabled': False, 'select_page': ['a', 'b'], 'clear_page': [], 'off_page': [], 'excluded': [], 'count': 2})
    check('disabled unselected', solve([{'id':'a'},{'id':'b'}], [], ['a','b'], ['b'], 'explicit', []), {'eligible': ['a'], 'checked': [], 'all': False, 'mixed': False, 'disabled': False, 'select_page': ['a'], 'clear_page': [], 'off_page': [], 'excluded': [], 'count': 0})

if N == 4:
    check('partial page', solve([{'id':'a'},{'id':'b'},{'id':'c'},{'id':'d'+str(4)}], ['a','c','stale'], ['a','b'], [], 'explicit', []), {'eligible': ['a', 'b'], 'checked': ['a'], 'all': False, 'mixed': True, 'disabled': False, 'select_page': ['a', 'b', 'c'], 'clear_page': ['c'], 'off_page': ['c'], 'excluded': [], 'count': 2})
    check('disabled row', solve([{'id':'a'},{'id':'b'}], ['a','b'], ['a','b'], ['b'], 'explicit', []), {'eligible': ['a'], 'checked': ['a'], 'all': True, 'mixed': False, 'disabled': False, 'select_page': ['a', 'b'], 'clear_page': ['b'], 'off_page': [], 'excluded': [], 'count': 2})
    check('global mode', solve([{'id':'a'},{'id':'b'},{'id':'c'}], [], ['a','b'], [], 'all', ['b','stale']), {'eligible': ['a', 'b'], 'checked': ['a'], 'all': False, 'mixed': True, 'disabled': False, 'select_page': ['a', 'b'], 'clear_page': [], 'off_page': [], 'excluded': ['b'], 'count': 2})
    check('empty page', solve([{'id':'a'}], ['a'], [], [], 'explicit', []), {'eligible': [], 'checked': [], 'all': False, 'mixed': False, 'disabled': True, 'select_page': ['a'], 'clear_page': ['a'], 'off_page': ['a'], 'excluded': [], 'count': 1})
    check('none checked', solve([{'id':'a'},{'id':'b'}], [], ['a','b'], [], 'explicit', []), {'eligible': ['a', 'b'], 'checked': [], 'all': False, 'mixed': False, 'disabled': False, 'select_page': ['a', 'b'], 'clear_page': [], 'off_page': [], 'excluded': [], 'count': 0})
    check('full checked', solve([{'id':'a'},{'id':'b'}], ['a','b'], ['a','b'], [], 'explicit', []), {'eligible': ['a', 'b'], 'checked': ['a', 'b'], 'all': True, 'mixed': False, 'disabled': False, 'select_page': ['a', 'b'], 'clear_page': [], 'off_page': [], 'excluded': [], 'count': 2})
    check('disabled unselected', solve([{'id':'a'},{'id':'b'}], [], ['a','b'], ['b'], 'explicit', []), {'eligible': ['a'], 'checked': [], 'all': False, 'mixed': False, 'disabled': False, 'select_page': ['a'], 'clear_page': [], 'off_page': [], 'excluded': [], 'count': 0})

if N == 5:
    check('partial page', solve([{'id':'a'},{'id':'b'},{'id':'c'},{'id':'d'+str(5)}], ['a','c','stale'], ['a','b'], [], 'explicit', []), {'eligible': ['a', 'b'], 'checked': ['a'], 'all': False, 'mixed': True, 'disabled': False, 'select_page': ['a', 'b', 'c'], 'clear_page': ['c'], 'off_page': ['c'], 'excluded': [], 'count': 2})
    check('disabled row', solve([{'id':'a'},{'id':'b'}], ['a','b'], ['a','b'], ['b'], 'explicit', []), {'eligible': ['a'], 'checked': ['a'], 'all': True, 'mixed': False, 'disabled': False, 'select_page': ['a', 'b'], 'clear_page': ['b'], 'off_page': [], 'excluded': [], 'count': 2})
    check('global mode', solve([{'id':'a'},{'id':'b'},{'id':'c'}], [], ['a','b'], [], 'all', ['b','stale']), {'eligible': ['a', 'b'], 'checked': ['a'], 'all': False, 'mixed': True, 'disabled': False, 'select_page': ['a', 'b'], 'clear_page': [], 'off_page': [], 'excluded': ['b'], 'count': 2})
    check('empty page', solve([{'id':'a'}], ['a'], [], [], 'explicit', []), {'eligible': [], 'checked': [], 'all': False, 'mixed': False, 'disabled': True, 'select_page': ['a'], 'clear_page': ['a'], 'off_page': ['a'], 'excluded': [], 'count': 1})
    check('none checked', solve([{'id':'a'},{'id':'b'}], [], ['a','b'], [], 'explicit', []), {'eligible': ['a', 'b'], 'checked': [], 'all': False, 'mixed': False, 'disabled': False, 'select_page': ['a', 'b'], 'clear_page': [], 'off_page': [], 'excluded': [], 'count': 0})
    check('full checked', solve([{'id':'a'},{'id':'b'}], ['a','b'], ['a','b'], [], 'explicit', []), {'eligible': ['a', 'b'], 'checked': ['a', 'b'], 'all': True, 'mixed': False, 'disabled': False, 'select_page': ['a', 'b'], 'clear_page': [], 'off_page': [], 'excluded': [], 'count': 2})
    check('disabled unselected', solve([{'id':'a'},{'id':'b'}], [], ['a','b'], ['b'], 'explicit', []), {'eligible': ['a'], 'checked': [], 'all': False, 'mixed': False, 'disabled': False, 'select_page': ['a'], 'clear_page': [], 'off_page': [], 'excluded': [], 'count': 0})

check('variant selected identity', solve([{'id':'a'},{'id':'b'+str(N)}], ['b'+str(N)], ['a','b'+str(N)], [], 'explicit', []), {'eligible':['a','b'+str(N)], 'checked':['b'+str(N)], 'all':False, 'mixed':True, 'disabled':False, 'select_page':['a','b'+str(N)], 'clear_page':[], 'off_page':[], 'excluded':[], 'count':1})
print(json.dumps({"observations": observations, "passed": all(x["passed"] for x in observations)}, ensure_ascii=False))
raise SystemExit(0 if all(x["passed"] for x in observations) else 1)
Boundary fixtureActualExpectedOutcome
partial page{'all': True, 'checked': ['a'], 'clear_page': ['c'], 'count': 2, 'disabled': False, 'eligible': ['a', 'b'], 'excluded': [], 'mixed': True, 'off_page': ['c'], 'select_page': ['a', 'b', 'c']}{'all': False, 'checked': ['a'], 'clear_page': ['c'], 'count': 2, 'disabled': False, 'eligible': ['a', 'b'], 'excluded': [], 'mixed': True, 'off_page': ['c'], 'select_page': ['a', 'b', 'c']}Failed
disabled row{'all': True, 'checked': ['a'], 'clear_page': ['b'], 'count': 2, 'disabled': False, 'eligible': ['a'], 'excluded': [], 'mixed': False, 'off_page': [], 'select_page': ['a', 'b']}{'all': True, 'checked': ['a'], 'clear_page': ['b'], 'count': 2, 'disabled': False, 'eligible': ['a'], 'excluded': [], 'mixed': False, 'off_page': [], 'select_page': ['a', 'b']}Passed
global mode{'all': True, 'checked': ['a'], 'clear_page': [], 'count': 2, 'disabled': False, 'eligible': ['a', 'b'], 'excluded': ['b'], 'mixed': True, 'off_page': [], 'select_page': ['a', 'b']}{'all': False, 'checked': ['a'], 'clear_page': [], 'count': 2, 'disabled': False, 'eligible': ['a', 'b'], 'excluded': ['b'], 'mixed': True, 'off_page': [], 'select_page': ['a', 'b']}Failed
empty page{'all': False, 'checked': [], 'clear_page': ['a'], 'count': 1, 'disabled': True, 'eligible': [], 'excluded': [], 'mixed': False, 'off_page': ['a'], 'select_page': ['a']}{'all': False, 'checked': [], 'clear_page': ['a'], 'count': 1, 'disabled': True, 'eligible': [], 'excluded': [], 'mixed': False, 'off_page': ['a'], 'select_page': ['a']}Passed
none checked{'all': False, 'checked': [], 'clear_page': [], 'count': 0, 'disabled': False, 'eligible': ['a', 'b'], 'excluded': [], 'mixed': False, 'off_page': [], 'select_page': ['a', 'b']}{'all': False, 'checked': [], 'clear_page': [], 'count': 0, 'disabled': False, 'eligible': ['a', 'b'], 'excluded': [], 'mixed': False, 'off_page': [], 'select_page': ['a', 'b']}Passed
full checked{'all': True, 'checked': ['a', 'b'], 'clear_page': [], 'count': 2, 'disabled': False, 'eligible': ['a', 'b'], 'excluded': [], 'mixed': False, 'off_page': [], 'select_page': ['a', 'b']}{'all': True, 'checked': ['a', 'b'], 'clear_page': [], 'count': 2, 'disabled': False, 'eligible': ['a', 'b'], 'excluded': [], 'mixed': False, 'off_page': [], 'select_page': ['a', 'b']}Passed
disabled unselected{'all': False, 'checked': [], 'clear_page': [], 'count': 0, 'disabled': False, 'eligible': ['a'], 'excluded': [], 'mixed': False, 'off_page': [], 'select_page': ['a']}{'all': False, 'checked': [], 'clear_page': [], 'count': 0, 'disabled': False, 'eligible': ['a'], 'excluded': [], 'mixed': False, 'off_page': [], 'select_page': ['a']}Passed
variant selected identity{'all': True, 'checked': ['b1'], 'clear_page': [], 'count': 1, 'disabled': False, 'eligible': ['a', 'b1'], 'excluded': [], 'mixed': True, 'off_page': [], 'select_page': ['a', 'b1']}{'all': False, 'checked': ['b1'], 'clear_page': [], 'count': 1, 'disabled': False, 'eligible': ['a', 'b1'], 'excluded': [], 'mixed': True, 'off_page': [], 'select_page': ['a', 'b1']}Failed

SHA-256 / 8f606e9b8c01cd623a77af8430f977775f7a76a9ce982d2d3d78000c45108cc8

HELD IN THE MEMBER ARCHIVE

The verified repair and its recorded checks are member-only.

This mechanism has 8 recorded checks per implementation. The open-access tier publishes the failure and the unsuccessful fix; the repaired source that passes every check, and the observations that prove it, are available to members.

Every case sharing this mechanism uses the same contract and the same repair, so this one record is held back for all of them.

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Verification & scope

Loaded row IDs are unique; selection/exclusion lists contain stable scalar IDs. Deterministic offline table UI model; no browser, DOM, framework, or standards conformance is claimed. This reproducer isolates one failure mechanism. Results cover the supplied fixtures. Variants within a family share a test contract and should remain grouped when constructing evaluation splits. Related mechanisms with a shared evaluation_group must also remain together; these controlled models are not independent production incidents.

Observations recorded using Python 3.12.14 at 2026-09-29T14:42:57.746990+00:00.

Case digest / d3e1c97f040db4667dcb652000030577c6d67be68be12837760101fb2c88b9b2