FA-35111 / Notification interfaces / Open access
Time-limited notification content expiry: action-success from pending-at-expiry · case 01
The action-success event leaves a notification in expired instead of completed.
ROOT CAUSE
A successful pre-deadline action is overwritten by expiry.
VERIFIED REPAIR
Commit the pending-at-expiry / action-success transition to completed; preserve the other explicitly stipulated transitions.
Unsuccessful approach: Returning to valid rearms an already completed action.
Case contract
Time-limited notification content expiry is a bounded visual-notification workflow with mutable policy state {'deadline': 20, 'now': 5, 'started': None, 'completed': False}. Its default transition relation is {('valid', 'deadline-near'): 'expiring', ('expiring', 'deadline-reached'): 'expired', ('valid', 'open-action'): 'action-pending', ('action-pending', 'deadline-reached'): 'pending-at-expiry', ('pending-at-expiry', 'action-success'): 'completed', ('pending-at-expiry', 'action-failure'): 'expired-action-error', ('expired', 'deadline-extension'): 'revalidation-pending', ('revalidation-pending', 'extension-validated'): 'valid', ('revalidation-pending', 'extension-rejected'): 'expired', ('completed', 'late-expiry'): 'completed'}; domain inputs can suppress or redirect transitions and update policy fields, as specified in solve. Different-generation events are inert. Batches apply in order. Optional observe returns the selected policy field alongside the phase.
Why this case matters
Visual notification lifecycle ordering can leave an inbox or toast showing the wrong actionable state even when transport succeeds.
1 / The failure
Exit 1"""Failure Map reference implementation. Python standard library only."""
import json
N = 1
observations = []
def solve(initial, events, generation, payload=None, observe=None):
table = {('valid', 'deadline-near'): 'expiring', ('expiring', 'deadline-reached'): 'expired', ('valid', 'open-action'): 'action-pending', ('action-pending', 'deadline-reached'): 'pending-at-expiry', ('pending-at-expiry', 'action-success'): 'expired', ('pending-at-expiry', 'action-failure'): 'expired-action-error', ('expired', 'deadline-extension'): 'revalidation-pending', ('revalidation-pending', 'extension-validated'): 'valid', ('revalidation-pending', 'extension-rejected'): 'expired', ('completed', 'late-expiry'): 'completed'}
data = json.loads(json.dumps({'deadline': 20, 'now': 5, 'started': None, 'completed': False})) if payload is None else {**json.loads(json.dumps({'deadline': 20, 'now': 5, 'started': None, 'completed': False})), **json.loads(json.dumps(payload))}
state = initial
for delivery in events:
event, event_generation = delivery[:2]
arg = delivery[2] if len(delivery) > 2 else {}
if event_generation == generation:
previous = state
data['now'] = max(data['now'],arg.get('now',data['now']))
if event == 'open-action':
if data['now'] >= data['deadline']: event = 'unknown-event'
else: data['started'] = data['now']
if event == 'deadline-reached' and data['now'] < data['deadline'] and 'now' in arg: event = 'unknown-event'
if event == 'extension-validated': data['deadline'] = max(data['deadline'],arg.get('deadline',data['deadline']+10))
state = table.get((state, event), state)
if state == 'completed': data['completed'] = True
return {'phase': state, 'value': data[observe]} if observe else state
def check(label, actual, expected):
observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
check('valid / deadline-near', solve('valid', [('deadline-near', N)], N), 'expiring')
check('expiring / deadline-reached', solve('expiring', [('deadline-reached', N)], N), 'expired')
check('valid / open-action', solve('valid', [('open-action', N)], N), 'action-pending')
check('action-pending / deadline-reached', solve('action-pending', [('deadline-reached', N)], N), 'pending-at-expiry')
check('pending-at-expiry / action-success', solve('pending-at-expiry', [('action-success', N)], N), 'completed')
check('pending-at-expiry / action-failure', solve('pending-at-expiry', [('action-failure', N)], N), 'expired-action-error')
check('expired / deadline-extension', solve('expired', [('deadline-extension', N)], N), 'revalidation-pending')
check('revalidation-pending / extension-validated', solve('revalidation-pending', [('extension-validated', N)], N), 'valid')
check('revalidation-pending / extension-rejected', solve('revalidation-pending', [('extension-rejected', N)], N), 'expired')
check('completed / late-expiry', solve('completed', [('late-expiry', N)], N), 'completed')
check('older notification incarnation', solve('valid', [('deadline-near', N - 1)], N), 'valid')
check('future notification incarnation', solve('valid', [('deadline-near', N + 1)], N), 'valid')
check('unknown event is inert', solve('valid', [('unknown-event', N)], N), 'valid')
check('empty delivery batch', solve('valid', [], N), 'valid')
check('N stale deliveries before current delivery', solve('valid', [('deadline-near', N - 1)] * N + [('deadline-near', N)], N), 'expiring')
check('trace deadline-near then deadline-reached', solve('valid', [('deadline-near', N), ('deadline-reached', N)], N), 'expired')
check('trace deadline-reached then deadline-extension', solve('expiring', [('deadline-reached', N), ('deadline-extension', N)], N), 'revalidation-pending')
check('trace open-action then deadline-reached', solve('valid', [('open-action', N), ('deadline-reached', N)], N), 'pending-at-expiry')
check('trace deadline-reached then action-success', solve('action-pending', [('deadline-reached', N), ('action-success', N)], N), 'completed')
check('trace deadline-reached then action-failure', solve('action-pending', [('deadline-reached', N), ('action-failure', N)], N), 'expired-action-error')
check('trace action-success then late-expiry', solve('pending-at-expiry', [('action-success', N), ('late-expiry', N)], N), 'completed')
check('trace deadline-extension then extension-validated', solve('expired', [('deadline-extension', N), ('extension-validated', N)], N), 'valid')
check('trace deadline-extension then extension-rejected', solve('expired', [('deadline-extension', N), ('extension-rejected', N)], N), 'expired')
check('trace extension-validated then deadline-near', solve('revalidation-pending', [('extension-validated', N), ('deadline-near', N)], N), 'expiring')
check('trace extension-validated then open-action', solve('revalidation-pending', [('extension-validated', N), ('open-action', N)], N), 'action-pending')
check('trace extension-rejected then deadline-extension', solve('revalidation-pending', [('extension-rejected', N), ('deadline-extension', N)], N), 'revalidation-pending')
check('trace late-expiry then late-expiry', solve('completed', [('late-expiry', N), ('late-expiry', N)], N), 'completed')
check('domain state regression 1: started', solve('valid', [('open-action', N, {'now': 19})], N, {}, 'started'), {'phase': 'action-pending', 'value': 19})
check('domain state regression 2: started', solve('valid', [('open-action', N, {'now': 20})], N, {}, 'started'), {'phase': 'valid', 'value': None})
check('domain state regression 3: now', solve('expiring', [('deadline-reached', N, {'now': 19})], N, {}, 'now'), {'phase': 'expiring', 'value': 19})
check('domain state regression 4: completed', solve('pending-at-expiry', [('action-success', N, {})], N, {'started': 19, 'now': 21}, 'completed'), {'phase': 'completed', 'value': True})
check('domain state regression 5: deadline', solve('revalidation-pending', [('extension-validated', N, {'deadline': 15})], N, {}, 'deadline'), {'phase': 'valid', 'value': 20})
check('domain state regression 6: completed', solve('completed', [('late-expiry', N, {})], N, {'completed': True}, 'completed'), {'phase': 'completed', 'value': True})
check('domain state regression 7: started', solve('valid', [('open-action', N, {'now': 19}), ('deadline-reached', N, {'now': 20}), ('action-success', N, {})], N, {}, 'started'), {'phase': 'completed', 'value': 19})
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 fixture | Actual | Expected | Outcome |
|---|---|---|---|
| valid / deadline-near | expiring | expiring | Passed |
| expiring / deadline-reached | expired | expired | Passed |
| valid / open-action | action-pending | action-pending | Passed |
| action-pending / deadline-reached | pending-at-expiry | pending-at-expiry | Passed |
| pending-at-expiry / action-success | expired | completed | Failed |
| pending-at-expiry / action-failure | expired-action-error | expired-action-error | Passed |
| expired / deadline-extension | revalidation-pending | revalidation-pending | Passed |
| revalidation-pending / extension-validated | valid | valid | Passed |
| revalidation-pending / extension-rejected | expired | expired | Passed |
| completed / late-expiry | completed | completed | Passed |
| older notification incarnation | valid | valid | Passed |
| future notification incarnation | valid | valid | Passed |
| unknown event is inert | valid | valid | Passed |
| empty delivery batch | valid | valid | Passed |
| N stale deliveries before current delivery | expiring | expiring | Passed |
| trace deadline-near then deadline-reached | expired | expired | Passed |
| trace deadline-reached then deadline-extension | revalidation-pending | revalidation-pending | Passed |
| trace open-action then deadline-reached | pending-at-expiry | pending-at-expiry | Passed |
| trace deadline-reached then action-success | expired | completed | Failed |
| trace deadline-reached then action-failure | expired-action-error | expired-action-error | Passed |
| trace action-success then late-expiry | expired | completed | Failed |
| trace deadline-extension then extension-validated | valid | valid | Passed |
| trace deadline-extension then extension-rejected | expired | expired | Passed |
| trace extension-validated then deadline-near | expiring | expiring | Passed |
| trace extension-validated then open-action | action-pending | action-pending | Passed |
| trace extension-rejected then deadline-extension | revalidation-pending | revalidation-pending | Passed |
| trace late-expiry then late-expiry | completed | completed | Passed |
| domain state regression 1: started | {'phase': 'action-pending', 'value': 19} | {'phase': 'action-pending', 'value': 19} | Passed |
| domain state regression 2: started | {'phase': 'valid', 'value': None} | {'phase': 'valid', 'value': None} | Passed |
| domain state regression 3: now | {'phase': 'expiring', 'value': 19} | {'phase': 'expiring', 'value': 19} | Passed |
| domain state regression 4: completed | {'phase': 'expired', 'value': False} | {'phase': 'completed', 'value': True} | Failed |
| domain state regression 5: deadline | {'phase': 'valid', 'value': 20} | {'phase': 'valid', 'value': 20} | Passed |
| domain state regression 6: completed | {'phase': 'completed', 'value': True} | {'phase': 'completed', 'value': True} | Passed |
| domain state regression 7: started | {'phase': 'expired', 'value': 19} | {'phase': 'completed', 'value': 19} | Failed |
SHA-256 / 0617deb3de60a2d4f12f14110a8fea0c34ec38a2d8ea0eeed02273b746707011
2 / The unsuccessful fix
Exit 1"""Failure Map reference implementation. Python standard library only."""
import json
N = 1
observations = []
def solve(initial, events, generation, payload=None, observe=None):
table = {('valid', 'deadline-near'): 'expiring', ('expiring', 'deadline-reached'): 'expired', ('valid', 'open-action'): 'action-pending', ('action-pending', 'deadline-reached'): 'pending-at-expiry', ('pending-at-expiry', 'action-success'): 'valid', ('pending-at-expiry', 'action-failure'): 'expired-action-error', ('expired', 'deadline-extension'): 'revalidation-pending', ('revalidation-pending', 'extension-validated'): 'valid', ('revalidation-pending', 'extension-rejected'): 'expired', ('completed', 'late-expiry'): 'completed'}
data = json.loads(json.dumps({'deadline': 20, 'now': 5, 'started': None, 'completed': False})) if payload is None else {**json.loads(json.dumps({'deadline': 20, 'now': 5, 'started': None, 'completed': False})), **json.loads(json.dumps(payload))}
state = initial
for delivery in events:
event, event_generation = delivery[:2]
arg = delivery[2] if len(delivery) > 2 else {}
if event_generation == generation:
previous = state
data['now'] = max(data['now'],arg.get('now',data['now']))
if event == 'open-action':
if data['now'] >= data['deadline']: event = 'unknown-event'
else: data['started'] = data['now']
if event == 'deadline-reached' and data['now'] < data['deadline'] and 'now' in arg: event = 'unknown-event'
if event == 'extension-validated': data['deadline'] = max(data['deadline'],arg.get('deadline',data['deadline']+10))
state = table.get((state, event), state)
if state == 'completed': data['completed'] = True
return {'phase': state, 'value': data[observe]} if observe else state
def check(label, actual, expected):
observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
check('valid / deadline-near', solve('valid', [('deadline-near', N)], N), 'expiring')
check('expiring / deadline-reached', solve('expiring', [('deadline-reached', N)], N), 'expired')
check('valid / open-action', solve('valid', [('open-action', N)], N), 'action-pending')
check('action-pending / deadline-reached', solve('action-pending', [('deadline-reached', N)], N), 'pending-at-expiry')
check('pending-at-expiry / action-success', solve('pending-at-expiry', [('action-success', N)], N), 'completed')
check('pending-at-expiry / action-failure', solve('pending-at-expiry', [('action-failure', N)], N), 'expired-action-error')
check('expired / deadline-extension', solve('expired', [('deadline-extension', N)], N), 'revalidation-pending')
check('revalidation-pending / extension-validated', solve('revalidation-pending', [('extension-validated', N)], N), 'valid')
check('revalidation-pending / extension-rejected', solve('revalidation-pending', [('extension-rejected', N)], N), 'expired')
check('completed / late-expiry', solve('completed', [('late-expiry', N)], N), 'completed')
check('older notification incarnation', solve('valid', [('deadline-near', N - 1)], N), 'valid')
check('future notification incarnation', solve('valid', [('deadline-near', N + 1)], N), 'valid')
check('unknown event is inert', solve('valid', [('unknown-event', N)], N), 'valid')
check('empty delivery batch', solve('valid', [], N), 'valid')
check('N stale deliveries before current delivery', solve('valid', [('deadline-near', N - 1)] * N + [('deadline-near', N)], N), 'expiring')
check('trace deadline-near then deadline-reached', solve('valid', [('deadline-near', N), ('deadline-reached', N)], N), 'expired')
check('trace deadline-reached then deadline-extension', solve('expiring', [('deadline-reached', N), ('deadline-extension', N)], N), 'revalidation-pending')
check('trace open-action then deadline-reached', solve('valid', [('open-action', N), ('deadline-reached', N)], N), 'pending-at-expiry')
check('trace deadline-reached then action-success', solve('action-pending', [('deadline-reached', N), ('action-success', N)], N), 'completed')
check('trace deadline-reached then action-failure', solve('action-pending', [('deadline-reached', N), ('action-failure', N)], N), 'expired-action-error')
check('trace action-success then late-expiry', solve('pending-at-expiry', [('action-success', N), ('late-expiry', N)], N), 'completed')
check('trace deadline-extension then extension-validated', solve('expired', [('deadline-extension', N), ('extension-validated', N)], N), 'valid')
check('trace deadline-extension then extension-rejected', solve('expired', [('deadline-extension', N), ('extension-rejected', N)], N), 'expired')
check('trace extension-validated then deadline-near', solve('revalidation-pending', [('extension-validated', N), ('deadline-near', N)], N), 'expiring')
check('trace extension-validated then open-action', solve('revalidation-pending', [('extension-validated', N), ('open-action', N)], N), 'action-pending')
check('trace extension-rejected then deadline-extension', solve('revalidation-pending', [('extension-rejected', N), ('deadline-extension', N)], N), 'revalidation-pending')
check('trace late-expiry then late-expiry', solve('completed', [('late-expiry', N), ('late-expiry', N)], N), 'completed')
check('domain state regression 1: started', solve('valid', [('open-action', N, {'now': 19})], N, {}, 'started'), {'phase': 'action-pending', 'value': 19})
check('domain state regression 2: started', solve('valid', [('open-action', N, {'now': 20})], N, {}, 'started'), {'phase': 'valid', 'value': None})
check('domain state regression 3: now', solve('expiring', [('deadline-reached', N, {'now': 19})], N, {}, 'now'), {'phase': 'expiring', 'value': 19})
check('domain state regression 4: completed', solve('pending-at-expiry', [('action-success', N, {})], N, {'started': 19, 'now': 21}, 'completed'), {'phase': 'completed', 'value': True})
check('domain state regression 5: deadline', solve('revalidation-pending', [('extension-validated', N, {'deadline': 15})], N, {}, 'deadline'), {'phase': 'valid', 'value': 20})
check('domain state regression 6: completed', solve('completed', [('late-expiry', N, {})], N, {'completed': True}, 'completed'), {'phase': 'completed', 'value': True})
check('domain state regression 7: started', solve('valid', [('open-action', N, {'now': 19}), ('deadline-reached', N, {'now': 20}), ('action-success', N, {})], N, {}, 'started'), {'phase': 'completed', 'value': 19})
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 fixture | Actual | Expected | Outcome |
|---|---|---|---|
| valid / deadline-near | expiring | expiring | Passed |
| expiring / deadline-reached | expired | expired | Passed |
| valid / open-action | action-pending | action-pending | Passed |
| action-pending / deadline-reached | pending-at-expiry | pending-at-expiry | Passed |
| pending-at-expiry / action-success | valid | completed | Failed |
| pending-at-expiry / action-failure | expired-action-error | expired-action-error | Passed |
| expired / deadline-extension | revalidation-pending | revalidation-pending | Passed |
| revalidation-pending / extension-validated | valid | valid | Passed |
| revalidation-pending / extension-rejected | expired | expired | Passed |
| completed / late-expiry | completed | completed | Passed |
| older notification incarnation | valid | valid | Passed |
| future notification incarnation | valid | valid | Passed |
| unknown event is inert | valid | valid | Passed |
| empty delivery batch | valid | valid | Passed |
| N stale deliveries before current delivery | expiring | expiring | Passed |
| trace deadline-near then deadline-reached | expired | expired | Passed |
| trace deadline-reached then deadline-extension | revalidation-pending | revalidation-pending | Passed |
| trace open-action then deadline-reached | pending-at-expiry | pending-at-expiry | Passed |
| trace deadline-reached then action-success | valid | completed | Failed |
| trace deadline-reached then action-failure | expired-action-error | expired-action-error | Passed |
| trace action-success then late-expiry | valid | completed | Failed |
| trace deadline-extension then extension-validated | valid | valid | Passed |
| trace deadline-extension then extension-rejected | expired | expired | Passed |
| trace extension-validated then deadline-near | expiring | expiring | Passed |
| trace extension-validated then open-action | action-pending | action-pending | Passed |
| trace extension-rejected then deadline-extension | revalidation-pending | revalidation-pending | Passed |
| trace late-expiry then late-expiry | completed | completed | Passed |
| domain state regression 1: started | {'phase': 'action-pending', 'value': 19} | {'phase': 'action-pending', 'value': 19} | Passed |
| domain state regression 2: started | {'phase': 'valid', 'value': None} | {'phase': 'valid', 'value': None} | Passed |
| domain state regression 3: now | {'phase': 'expiring', 'value': 19} | {'phase': 'expiring', 'value': 19} | Passed |
| domain state regression 4: completed | {'phase': 'valid', 'value': False} | {'phase': 'completed', 'value': True} | Failed |
| domain state regression 5: deadline | {'phase': 'valid', 'value': 20} | {'phase': 'valid', 'value': 20} | Passed |
| domain state regression 6: completed | {'phase': 'completed', 'value': True} | {'phase': 'completed', 'value': True} | Passed |
| domain state regression 7: started | {'phase': 'valid', 'value': 19} | {'phase': 'completed', 'value': 19} | Failed |
SHA-256 / be2c8eb63931fae41a4361bd25558f92e74dde9d9317a8061915c0efe50c270a
3 / The verified repair
Exit 0"""Failure Map reference implementation. Python standard library only."""
import json
N = 1
observations = []
def solve(initial, events, generation, payload=None, observe=None):
table = {('valid', 'deadline-near'): 'expiring', ('expiring', 'deadline-reached'): 'expired', ('valid', 'open-action'): 'action-pending', ('action-pending', 'deadline-reached'): 'pending-at-expiry', ('pending-at-expiry', 'action-success'): 'completed', ('pending-at-expiry', 'action-failure'): 'expired-action-error', ('expired', 'deadline-extension'): 'revalidation-pending', ('revalidation-pending', 'extension-validated'): 'valid', ('revalidation-pending', 'extension-rejected'): 'expired', ('completed', 'late-expiry'): 'completed'}
data = json.loads(json.dumps({'deadline': 20, 'now': 5, 'started': None, 'completed': False})) if payload is None else {**json.loads(json.dumps({'deadline': 20, 'now': 5, 'started': None, 'completed': False})), **json.loads(json.dumps(payload))}
state = initial
for delivery in events:
event, event_generation = delivery[:2]
arg = delivery[2] if len(delivery) > 2 else {}
if event_generation == generation:
previous = state
data['now'] = max(data['now'],arg.get('now',data['now']))
if event == 'open-action':
if data['now'] >= data['deadline']: event = 'unknown-event'
else: data['started'] = data['now']
if event == 'deadline-reached' and data['now'] < data['deadline'] and 'now' in arg: event = 'unknown-event'
if event == 'extension-validated': data['deadline'] = max(data['deadline'],arg.get('deadline',data['deadline']+10))
state = table.get((state, event), state)
if state == 'completed': data['completed'] = True
return {'phase': state, 'value': data[observe]} if observe else state
def check(label, actual, expected):
observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
check('valid / deadline-near', solve('valid', [('deadline-near', N)], N), 'expiring')
check('expiring / deadline-reached', solve('expiring', [('deadline-reached', N)], N), 'expired')
check('valid / open-action', solve('valid', [('open-action', N)], N), 'action-pending')
check('action-pending / deadline-reached', solve('action-pending', [('deadline-reached', N)], N), 'pending-at-expiry')
check('pending-at-expiry / action-success', solve('pending-at-expiry', [('action-success', N)], N), 'completed')
check('pending-at-expiry / action-failure', solve('pending-at-expiry', [('action-failure', N)], N), 'expired-action-error')
check('expired / deadline-extension', solve('expired', [('deadline-extension', N)], N), 'revalidation-pending')
check('revalidation-pending / extension-validated', solve('revalidation-pending', [('extension-validated', N)], N), 'valid')
check('revalidation-pending / extension-rejected', solve('revalidation-pending', [('extension-rejected', N)], N), 'expired')
check('completed / late-expiry', solve('completed', [('late-expiry', N)], N), 'completed')
check('older notification incarnation', solve('valid', [('deadline-near', N - 1)], N), 'valid')
check('future notification incarnation', solve('valid', [('deadline-near', N + 1)], N), 'valid')
check('unknown event is inert', solve('valid', [('unknown-event', N)], N), 'valid')
check('empty delivery batch', solve('valid', [], N), 'valid')
check('N stale deliveries before current delivery', solve('valid', [('deadline-near', N - 1)] * N + [('deadline-near', N)], N), 'expiring')
check('trace deadline-near then deadline-reached', solve('valid', [('deadline-near', N), ('deadline-reached', N)], N), 'expired')
check('trace deadline-reached then deadline-extension', solve('expiring', [('deadline-reached', N), ('deadline-extension', N)], N), 'revalidation-pending')
check('trace open-action then deadline-reached', solve('valid', [('open-action', N), ('deadline-reached', N)], N), 'pending-at-expiry')
check('trace deadline-reached then action-success', solve('action-pending', [('deadline-reached', N), ('action-success', N)], N), 'completed')
check('trace deadline-reached then action-failure', solve('action-pending', [('deadline-reached', N), ('action-failure', N)], N), 'expired-action-error')
check('trace action-success then late-expiry', solve('pending-at-expiry', [('action-success', N), ('late-expiry', N)], N), 'completed')
check('trace deadline-extension then extension-validated', solve('expired', [('deadline-extension', N), ('extension-validated', N)], N), 'valid')
check('trace deadline-extension then extension-rejected', solve('expired', [('deadline-extension', N), ('extension-rejected', N)], N), 'expired')
check('trace extension-validated then deadline-near', solve('revalidation-pending', [('extension-validated', N), ('deadline-near', N)], N), 'expiring')
check('trace extension-validated then open-action', solve('revalidation-pending', [('extension-validated', N), ('open-action', N)], N), 'action-pending')
check('trace extension-rejected then deadline-extension', solve('revalidation-pending', [('extension-rejected', N), ('deadline-extension', N)], N), 'revalidation-pending')
check('trace late-expiry then late-expiry', solve('completed', [('late-expiry', N), ('late-expiry', N)], N), 'completed')
check('domain state regression 1: started', solve('valid', [('open-action', N, {'now': 19})], N, {}, 'started'), {'phase': 'action-pending', 'value': 19})
check('domain state regression 2: started', solve('valid', [('open-action', N, {'now': 20})], N, {}, 'started'), {'phase': 'valid', 'value': None})
check('domain state regression 3: now', solve('expiring', [('deadline-reached', N, {'now': 19})], N, {}, 'now'), {'phase': 'expiring', 'value': 19})
check('domain state regression 4: completed', solve('pending-at-expiry', [('action-success', N, {})], N, {'started': 19, 'now': 21}, 'completed'), {'phase': 'completed', 'value': True})
check('domain state regression 5: deadline', solve('revalidation-pending', [('extension-validated', N, {'deadline': 15})], N, {}, 'deadline'), {'phase': 'valid', 'value': 20})
check('domain state regression 6: completed', solve('completed', [('late-expiry', N, {})], N, {'completed': True}, 'completed'), {'phase': 'completed', 'value': True})
check('domain state regression 7: started', solve('valid', [('open-action', N, {'now': 19}), ('deadline-reached', N, {'now': 20}), ('action-success', N, {})], N, {}, 'started'), {'phase': 'completed', 'value': 19})
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 fixture | Actual | Expected | Outcome |
|---|---|---|---|
| valid / deadline-near | expiring | expiring | Passed |
| expiring / deadline-reached | expired | expired | Passed |
| valid / open-action | action-pending | action-pending | Passed |
| action-pending / deadline-reached | pending-at-expiry | pending-at-expiry | Passed |
| pending-at-expiry / action-success | completed | completed | Passed |
| pending-at-expiry / action-failure | expired-action-error | expired-action-error | Passed |
| expired / deadline-extension | revalidation-pending | revalidation-pending | Passed |
| revalidation-pending / extension-validated | valid | valid | Passed |
| revalidation-pending / extension-rejected | expired | expired | Passed |
| completed / late-expiry | completed | completed | Passed |
| older notification incarnation | valid | valid | Passed |
| future notification incarnation | valid | valid | Passed |
| unknown event is inert | valid | valid | Passed |
| empty delivery batch | valid | valid | Passed |
| N stale deliveries before current delivery | expiring | expiring | Passed |
| trace deadline-near then deadline-reached | expired | expired | Passed |
| trace deadline-reached then deadline-extension | revalidation-pending | revalidation-pending | Passed |
| trace open-action then deadline-reached | pending-at-expiry | pending-at-expiry | Passed |
| trace deadline-reached then action-success | completed | completed | Passed |
| trace deadline-reached then action-failure | expired-action-error | expired-action-error | Passed |
| trace action-success then late-expiry | completed | completed | Passed |
| trace deadline-extension then extension-validated | valid | valid | Passed |
| trace deadline-extension then extension-rejected | expired | expired | Passed |
| trace extension-validated then deadline-near | expiring | expiring | Passed |
| trace extension-validated then open-action | action-pending | action-pending | Passed |
| trace extension-rejected then deadline-extension | revalidation-pending | revalidation-pending | Passed |
| trace late-expiry then late-expiry | completed | completed | Passed |
| domain state regression 1: started | {'phase': 'action-pending', 'value': 19} | {'phase': 'action-pending', 'value': 19} | Passed |
| domain state regression 2: started | {'phase': 'valid', 'value': None} | {'phase': 'valid', 'value': None} | Passed |
| domain state regression 3: now | {'phase': 'expiring', 'value': 19} | {'phase': 'expiring', 'value': 19} | Passed |
| domain state regression 4: completed | {'phase': 'completed', 'value': True} | {'phase': 'completed', 'value': True} | Passed |
| domain state regression 5: deadline | {'phase': 'valid', 'value': 20} | {'phase': 'valid', 'value': 20} | Passed |
| domain state regression 6: completed | {'phase': 'completed', 'value': True} | {'phase': 'completed', 'value': True} | Passed |
| domain state regression 7: started | {'phase': 'completed', 'value': 19} | {'phase': 'completed', 'value': 19} | Passed |
SHA-256 / 24e51f6a8335f08ddd05447f068991f449e19e692894c4a23096d72906fa284b
Verification & scope
Stipulated single-notification state and policy model only. Event delivery and acknowledgements are explicit test inputs. No DOM, accessibility announcements, live timers, networking, actual rendering, or production-platform conformance is simulated. 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 2026-09-29T14:42:38.420366+00:00.
Case digest / b73b87bdc82559e26d2ea98977f423226671af8ac1aa8f57925ca4dbb0c0c67b