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FA-26031 / Filter interfaces / Open access

Failed-apply review retains the rejected snapshot · case 01

Failed-apply review retains the rejected snapshot is violated by the widget projection.

Verified by executionVariant 1 · 10 checks per implementationDownload source bundle ↓JSON ↗

ROOT CAUSE

The failed-retain decision uses `d['latest'] if d['failed'] else None` instead of the stipulated apply-queue projection.

VERIFIED REPAIR

Implement the declared failed-retain projection: `d['inflight'] if d['failed'] else None`.

Unsuccessful approach: The attempted correction `None` still violates the explicit contract fixtures.

Case contract

A filter apply queue coalesces only unsent drafts, preserves the in-flight snapshot, and acknowledges exactly the sent revision before promoting a queued draft. This example checks: Failed-apply review retains the rejected snapshot.

Why this case matters

Filter-widget state and serialization must preserve user constraints while the view changes.

1 / The failure

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

N = 1
observations = []
def solve(d):
    return {'inflight-preserve':(d['inflight']), 'queued-replace':(d['latest'] if d['busy'] else None), 'ack-match':(d['ack']==d['sent']), 'promote-queued':(d['queued'] if d['ack']==d['sent'] and d['queued'] is not None else None), 'failed-retain':(d['latest'] if d['failed'] else None), 'send-now':(d['latest'] if not d['busy'] and d['valid'] else None)}
def check(label, actual, expected):
    observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
fixtures = {1: [({'inflight': ['a'], 'latest': ['b'], 'queued': None, 'busy': False, 'ack': 1, 'sent': 2, 'failed': True, 'valid': False}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': False, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': None, 'busy': False, 'ack': 2, 'sent': 2, 'failed': True, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': True, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': ['b']}), ({'inflight': ['a'], 'latest': ['b'], 'queued': None, 'busy': False, 'ack': 3, 'sent': 2, 'failed': True, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': False, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': ['b']}), ({'inflight': ['a'], 'latest': ['b'], 'queued': None, 'busy': True, 'ack': 1, 'sent': 2, 'failed': True, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': ['b'], 'ack-match': False, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': None, 'busy': True, 'ack': 2, 'sent': 2, 'failed': True, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': ['b'], 'ack-match': True, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': None, 'busy': True, 'ack': 3, 'sent': 2, 'failed': True, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': ['b'], 'ack-match': False, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': False, 'ack': 1, 'sent': 2, 'failed': True, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': False, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': ['b']}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': False, 'ack': 2, 'sent': 2, 'failed': True, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': True, 'promote-queued': ['c'], 'failed-retain': ['a'], 'send-now': ['b']}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': False, 'ack': 3, 'sent': 2, 'failed': True, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': False, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': ['b']}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': True, 'ack': 1, 'sent': 2, 'failed': True, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': ['b'], 'ack-match': False, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': None})], 2: [({'inflight': ['a'], 'latest': ['b'], 'queued': None, 'busy': False, 'ack': 1, 'sent': 2, 'failed': True, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': False, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': ['b']}), ({'inflight': ['a'], 'latest': ['b'], 'queued': None, 'busy': True, 'ack': 1, 'sent': 2, 'failed': True, 'valid': False}, {'inflight-preserve': ['a'], 'queued-replace': ['b'], 'ack-match': False, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': None, 'busy': True, 'ack': 2, 'sent': 2, 'failed': True, 'valid': False}, {'inflight-preserve': ['a'], 'queued-replace': ['b'], 'ack-match': True, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': None, 'busy': True, 'ack': 3, 'sent': 2, 'failed': True, 'valid': False}, {'inflight-preserve': ['a'], 'queued-replace': ['b'], 'ack-match': False, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': False, 'ack': 1, 'sent': 2, 'failed': True, 'valid': False}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': False, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': False, 'ack': 2, 'sent': 2, 'failed': True, 'valid': False}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': True, 'promote-queued': ['c'], 'failed-retain': ['a'], 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': False, 'ack': 3, 'sent': 2, 'failed': True, 'valid': False}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': False, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': True, 'ack': 1, 'sent': 2, 'failed': True, 'valid': False}, {'inflight-preserve': ['a'], 'queued-replace': ['b'], 'ack-match': False, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': True, 'ack': 2, 'sent': 2, 'failed': True, 'valid': False}, {'inflight-preserve': ['a'], 'queued-replace': ['b'], 'ack-match': True, 'promote-queued': ['c'], 'failed-retain': ['a'], 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': True, 'ack': 3, 'sent': 2, 'failed': True, 'valid': False}, {'inflight-preserve': ['a'], 'queued-replace': ['b'], 'ack-match': False, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': None})], 3: [({'inflight': ['a'], 'latest': ['b'], 'queued': None, 'busy': False, 'ack': 2, 'sent': 2, 'failed': True, 'valid': False}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': True, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': None, 'busy': True, 'ack': 2, 'sent': 2, 'failed': True, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': ['b'], 'ack-match': True, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': None, 'busy': True, 'ack': 3, 'sent': 2, 'failed': False, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': ['b'], 'ack-match': False, 'promote-queued': None, 'failed-retain': None, 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': False, 'ack': 1, 'sent': 2, 'failed': False, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': False, 'promote-queued': None, 'failed-retain': None, 'send-now': ['b']}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': False, 'ack': 2, 'sent': 2, 'failed': False, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': True, 'promote-queued': ['c'], 'failed-retain': None, 'send-now': ['b']}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': False, 'ack': 3, 'sent': 2, 'failed': False, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': False, 'promote-queued': None, 'failed-retain': None, 'send-now': ['b']}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': True, 'ack': 1, 'sent': 2, 'failed': False, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': ['b'], 'ack-match': False, 'promote-queued': None, 'failed-retain': None, 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': True, 'ack': 2, 'sent': 2, 'failed': False, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': ['b'], 'ack-match': True, 'promote-queued': ['c'], 'failed-retain': None, 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': True, 'ack': 3, 'sent': 2, 'failed': False, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': ['b'], 'ack-match': False, 'promote-queued': None, 'failed-retain': None, 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': None, 'busy': False, 'ack': 1, 'sent': 2, 'failed': False, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': False, 'promote-queued': None, 'failed-retain': None, 'send-now': ['b']})], 4: [({'inflight': ['a'], 'latest': ['b'], 'queued': None, 'busy': False, 'ack': 2, 'sent': 2, 'failed': True, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': True, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': ['b']}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': False, 'ack': 1, 'sent': 2, 'failed': True, 'valid': False}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': False, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': False, 'ack': 2, 'sent': 2, 'failed': False, 'valid': False}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': True, 'promote-queued': ['c'], 'failed-retain': None, 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': False, 'ack': 3, 'sent': 2, 'failed': False, 'valid': False}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': False, 'promote-queued': None, 'failed-retain': None, 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': True, 'ack': 1, 'sent': 2, 'failed': False, 'valid': False}, {'inflight-preserve': ['a'], 'queued-replace': ['b'], 'ack-match': False, 'promote-queued': None, 'failed-retain': None, 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': True, 'ack': 2, 'sent': 2, 'failed': False, 'valid': False}, {'inflight-preserve': ['a'], 'queued-replace': ['b'], 'ack-match': True, 'promote-queued': ['c'], 'failed-retain': None, 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': True, 'ack': 3, 'sent': 2, 'failed': False, 'valid': False}, {'inflight-preserve': ['a'], 'queued-replace': ['b'], 'ack-match': False, 'promote-queued': None, 'failed-retain': None, 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': None, 'busy': False, 'ack': 1, 'sent': 2, 'failed': False, 'valid': False}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': False, 'promote-queued': None, 'failed-retain': None, 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': None, 'busy': False, 'ack': 2, 'sent': 2, 'failed': False, 'valid': False}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': True, 'promote-queued': None, 'failed-retain': None, 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': None, 'busy': False, 'ack': 3, 'sent': 2, 'failed': False, 'valid': False}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': False, 'promote-queued': None, 'failed-retain': None, 'send-now': None})], 5: [({'inflight': ['a'], 'latest': ['b'], 'queued': None, 'busy': False, 'ack': 3, 'sent': 2, 'failed': True, 'valid': False}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': False, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': False, 'ack': 2, 'sent': 2, 'failed': True, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': True, 'promote-queued': ['c'], 'failed-retain': ['a'], 'send-now': ['b']}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': False, 'ack': 3, 'sent': 2, 'failed': True, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': False, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': ['b']}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': True, 'ack': 1, 'sent': 2, 'failed': True, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': ['b'], 'ack-match': False, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': True, 'ack': 2, 'sent': 2, 'failed': True, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': ['b'], 'ack-match': True, 'promote-queued': ['c'], 'failed-retain': ['a'], 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': True, 'ack': 3, 'sent': 2, 'failed': True, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': ['b'], 'ack-match': False, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': None, 'busy': False, 'ack': 1, 'sent': 2, 'failed': True, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': False, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': ['b']}), ({'inflight': ['a'], 'latest': ['b'], 'queued': None, 'busy': False, 'ack': 2, 'sent': 2, 'failed': True, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': True, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': ['b']}), ({'inflight': ['a'], 'latest': ['b'], 'queued': None, 'busy': False, 'ack': 3, 'sent': 2, 'failed': True, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': False, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': ['b']}), ({'inflight': ['a'], 'latest': ['b'], 'queued': None, 'busy': True, 'ack': 1, 'sent': 2, 'failed': True, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': ['b'], 'ack-match': False, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': None})]}
for index, (data, expected) in enumerate(fixtures[N]):
    check("contract fixture " + str(index), solve(data), expected)
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
contract fixture 0{'ack-match': False, 'failed-retain': ['b'], 'inflight-preserve': ['a'], 'promote-queued': None, 'queued-replace': None, 'send-now': None}{'ack-match': False, 'failed-retain': ['a'], 'inflight-preserve': ['a'], 'promote-queued': None, 'queued-replace': None, 'send-now': None}Failed
contract fixture 1{'ack-match': True, 'failed-retain': ['b'], 'inflight-preserve': ['a'], 'promote-queued': None, 'queued-replace': None, 'send-now': ['b']}{'ack-match': True, 'failed-retain': ['a'], 'inflight-preserve': ['a'], 'promote-queued': None, 'queued-replace': None, 'send-now': ['b']}Failed
contract fixture 2{'ack-match': False, 'failed-retain': ['b'], 'inflight-preserve': ['a'], 'promote-queued': None, 'queued-replace': None, 'send-now': ['b']}{'ack-match': False, 'failed-retain': ['a'], 'inflight-preserve': ['a'], 'promote-queued': None, 'queued-replace': None, 'send-now': ['b']}Failed
contract fixture 3{'ack-match': False, 'failed-retain': ['b'], 'inflight-preserve': ['a'], 'promote-queued': None, 'queued-replace': ['b'], 'send-now': None}{'ack-match': False, 'failed-retain': ['a'], 'inflight-preserve': ['a'], 'promote-queued': None, 'queued-replace': ['b'], 'send-now': None}Failed
contract fixture 4{'ack-match': True, 'failed-retain': ['b'], 'inflight-preserve': ['a'], 'promote-queued': None, 'queued-replace': ['b'], 'send-now': None}{'ack-match': True, 'failed-retain': ['a'], 'inflight-preserve': ['a'], 'promote-queued': None, 'queued-replace': ['b'], 'send-now': None}Failed
contract fixture 5{'ack-match': False, 'failed-retain': ['b'], 'inflight-preserve': ['a'], 'promote-queued': None, 'queued-replace': ['b'], 'send-now': None}{'ack-match': False, 'failed-retain': ['a'], 'inflight-preserve': ['a'], 'promote-queued': None, 'queued-replace': ['b'], 'send-now': None}Failed
contract fixture 6{'ack-match': False, 'failed-retain': ['b'], 'inflight-preserve': ['a'], 'promote-queued': None, 'queued-replace': None, 'send-now': ['b']}{'ack-match': False, 'failed-retain': ['a'], 'inflight-preserve': ['a'], 'promote-queued': None, 'queued-replace': None, 'send-now': ['b']}Failed
contract fixture 7{'ack-match': True, 'failed-retain': ['b'], 'inflight-preserve': ['a'], 'promote-queued': ['c'], 'queued-replace': None, 'send-now': ['b']}{'ack-match': True, 'failed-retain': ['a'], 'inflight-preserve': ['a'], 'promote-queued': ['c'], 'queued-replace': None, 'send-now': ['b']}Failed
contract fixture 8{'ack-match': False, 'failed-retain': ['b'], 'inflight-preserve': ['a'], 'promote-queued': None, 'queued-replace': None, 'send-now': ['b']}{'ack-match': False, 'failed-retain': ['a'], 'inflight-preserve': ['a'], 'promote-queued': None, 'queued-replace': None, 'send-now': ['b']}Failed
contract fixture 9{'ack-match': False, 'failed-retain': ['b'], 'inflight-preserve': ['a'], 'promote-queued': None, 'queued-replace': ['b'], 'send-now': None}{'ack-match': False, 'failed-retain': ['a'], 'inflight-preserve': ['a'], 'promote-queued': None, 'queued-replace': ['b'], 'send-now': None}Failed

SHA-256 / db82de0c1fe56b7b3159f20a6664fbd785f684cb328bc221c77fc972ac4b3e98

2 / The unsuccessful fix

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

N = 1
observations = []
def solve(d):
    return {'inflight-preserve':(d['inflight']), 'queued-replace':(d['latest'] if d['busy'] else None), 'ack-match':(d['ack']==d['sent']), 'promote-queued':(d['queued'] if d['ack']==d['sent'] and d['queued'] is not None else None), 'failed-retain':(None), 'send-now':(d['latest'] if not d['busy'] and d['valid'] else None)}
def check(label, actual, expected):
    observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
fixtures = {1: [({'inflight': ['a'], 'latest': ['b'], 'queued': None, 'busy': False, 'ack': 1, 'sent': 2, 'failed': True, 'valid': False}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': False, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': None, 'busy': False, 'ack': 2, 'sent': 2, 'failed': True, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': True, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': ['b']}), ({'inflight': ['a'], 'latest': ['b'], 'queued': None, 'busy': False, 'ack': 3, 'sent': 2, 'failed': True, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': False, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': ['b']}), ({'inflight': ['a'], 'latest': ['b'], 'queued': None, 'busy': True, 'ack': 1, 'sent': 2, 'failed': True, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': ['b'], 'ack-match': False, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': None, 'busy': True, 'ack': 2, 'sent': 2, 'failed': True, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': ['b'], 'ack-match': True, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': None, 'busy': True, 'ack': 3, 'sent': 2, 'failed': True, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': ['b'], 'ack-match': False, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': False, 'ack': 1, 'sent': 2, 'failed': True, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': False, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': ['b']}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': False, 'ack': 2, 'sent': 2, 'failed': True, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': True, 'promote-queued': ['c'], 'failed-retain': ['a'], 'send-now': ['b']}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': False, 'ack': 3, 'sent': 2, 'failed': True, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': False, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': ['b']}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': True, 'ack': 1, 'sent': 2, 'failed': True, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': ['b'], 'ack-match': False, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': None})], 2: [({'inflight': ['a'], 'latest': ['b'], 'queued': None, 'busy': False, 'ack': 1, 'sent': 2, 'failed': True, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': False, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': ['b']}), ({'inflight': ['a'], 'latest': ['b'], 'queued': None, 'busy': True, 'ack': 1, 'sent': 2, 'failed': True, 'valid': False}, {'inflight-preserve': ['a'], 'queued-replace': ['b'], 'ack-match': False, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': None, 'busy': True, 'ack': 2, 'sent': 2, 'failed': True, 'valid': False}, {'inflight-preserve': ['a'], 'queued-replace': ['b'], 'ack-match': True, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': None, 'busy': True, 'ack': 3, 'sent': 2, 'failed': True, 'valid': False}, {'inflight-preserve': ['a'], 'queued-replace': ['b'], 'ack-match': False, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': False, 'ack': 1, 'sent': 2, 'failed': True, 'valid': False}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': False, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': False, 'ack': 2, 'sent': 2, 'failed': True, 'valid': False}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': True, 'promote-queued': ['c'], 'failed-retain': ['a'], 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': False, 'ack': 3, 'sent': 2, 'failed': True, 'valid': False}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': False, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': True, 'ack': 1, 'sent': 2, 'failed': True, 'valid': False}, {'inflight-preserve': ['a'], 'queued-replace': ['b'], 'ack-match': False, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': True, 'ack': 2, 'sent': 2, 'failed': True, 'valid': False}, {'inflight-preserve': ['a'], 'queued-replace': ['b'], 'ack-match': True, 'promote-queued': ['c'], 'failed-retain': ['a'], 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': True, 'ack': 3, 'sent': 2, 'failed': True, 'valid': False}, {'inflight-preserve': ['a'], 'queued-replace': ['b'], 'ack-match': False, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': None})], 3: [({'inflight': ['a'], 'latest': ['b'], 'queued': None, 'busy': False, 'ack': 2, 'sent': 2, 'failed': True, 'valid': False}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': True, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': None, 'busy': True, 'ack': 2, 'sent': 2, 'failed': True, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': ['b'], 'ack-match': True, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': None, 'busy': True, 'ack': 3, 'sent': 2, 'failed': False, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': ['b'], 'ack-match': False, 'promote-queued': None, 'failed-retain': None, 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': False, 'ack': 1, 'sent': 2, 'failed': False, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': False, 'promote-queued': None, 'failed-retain': None, 'send-now': ['b']}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': False, 'ack': 2, 'sent': 2, 'failed': False, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': True, 'promote-queued': ['c'], 'failed-retain': None, 'send-now': ['b']}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': False, 'ack': 3, 'sent': 2, 'failed': False, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': False, 'promote-queued': None, 'failed-retain': None, 'send-now': ['b']}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': True, 'ack': 1, 'sent': 2, 'failed': False, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': ['b'], 'ack-match': False, 'promote-queued': None, 'failed-retain': None, 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': True, 'ack': 2, 'sent': 2, 'failed': False, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': ['b'], 'ack-match': True, 'promote-queued': ['c'], 'failed-retain': None, 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': True, 'ack': 3, 'sent': 2, 'failed': False, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': ['b'], 'ack-match': False, 'promote-queued': None, 'failed-retain': None, 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': None, 'busy': False, 'ack': 1, 'sent': 2, 'failed': False, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': False, 'promote-queued': None, 'failed-retain': None, 'send-now': ['b']})], 4: [({'inflight': ['a'], 'latest': ['b'], 'queued': None, 'busy': False, 'ack': 2, 'sent': 2, 'failed': True, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': True, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': ['b']}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': False, 'ack': 1, 'sent': 2, 'failed': True, 'valid': False}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': False, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': False, 'ack': 2, 'sent': 2, 'failed': False, 'valid': False}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': True, 'promote-queued': ['c'], 'failed-retain': None, 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': False, 'ack': 3, 'sent': 2, 'failed': False, 'valid': False}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': False, 'promote-queued': None, 'failed-retain': None, 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': True, 'ack': 1, 'sent': 2, 'failed': False, 'valid': False}, {'inflight-preserve': ['a'], 'queued-replace': ['b'], 'ack-match': False, 'promote-queued': None, 'failed-retain': None, 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': True, 'ack': 2, 'sent': 2, 'failed': False, 'valid': False}, {'inflight-preserve': ['a'], 'queued-replace': ['b'], 'ack-match': True, 'promote-queued': ['c'], 'failed-retain': None, 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': True, 'ack': 3, 'sent': 2, 'failed': False, 'valid': False}, {'inflight-preserve': ['a'], 'queued-replace': ['b'], 'ack-match': False, 'promote-queued': None, 'failed-retain': None, 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': None, 'busy': False, 'ack': 1, 'sent': 2, 'failed': False, 'valid': False}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': False, 'promote-queued': None, 'failed-retain': None, 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': None, 'busy': False, 'ack': 2, 'sent': 2, 'failed': False, 'valid': False}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': True, 'promote-queued': None, 'failed-retain': None, 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': None, 'busy': False, 'ack': 3, 'sent': 2, 'failed': False, 'valid': False}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': False, 'promote-queued': None, 'failed-retain': None, 'send-now': None})], 5: [({'inflight': ['a'], 'latest': ['b'], 'queued': None, 'busy': False, 'ack': 3, 'sent': 2, 'failed': True, 'valid': False}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': False, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': False, 'ack': 2, 'sent': 2, 'failed': True, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': True, 'promote-queued': ['c'], 'failed-retain': ['a'], 'send-now': ['b']}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': False, 'ack': 3, 'sent': 2, 'failed': True, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': False, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': ['b']}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': True, 'ack': 1, 'sent': 2, 'failed': True, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': ['b'], 'ack-match': False, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': True, 'ack': 2, 'sent': 2, 'failed': True, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': ['b'], 'ack-match': True, 'promote-queued': ['c'], 'failed-retain': ['a'], 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': True, 'ack': 3, 'sent': 2, 'failed': True, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': ['b'], 'ack-match': False, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': None, 'busy': False, 'ack': 1, 'sent': 2, 'failed': True, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': False, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': ['b']}), ({'inflight': ['a'], 'latest': ['b'], 'queued': None, 'busy': False, 'ack': 2, 'sent': 2, 'failed': True, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': True, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': ['b']}), ({'inflight': ['a'], 'latest': ['b'], 'queued': None, 'busy': False, 'ack': 3, 'sent': 2, 'failed': True, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': False, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': ['b']}), ({'inflight': ['a'], 'latest': ['b'], 'queued': None, 'busy': True, 'ack': 1, 'sent': 2, 'failed': True, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': ['b'], 'ack-match': False, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': None})]}
for index, (data, expected) in enumerate(fixtures[N]):
    check("contract fixture " + str(index), solve(data), expected)
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
contract fixture 0{'ack-match': False, 'failed-retain': None, 'inflight-preserve': ['a'], 'promote-queued': None, 'queued-replace': None, 'send-now': None}{'ack-match': False, 'failed-retain': ['a'], 'inflight-preserve': ['a'], 'promote-queued': None, 'queued-replace': None, 'send-now': None}Failed
contract fixture 1{'ack-match': True, 'failed-retain': None, 'inflight-preserve': ['a'], 'promote-queued': None, 'queued-replace': None, 'send-now': ['b']}{'ack-match': True, 'failed-retain': ['a'], 'inflight-preserve': ['a'], 'promote-queued': None, 'queued-replace': None, 'send-now': ['b']}Failed
contract fixture 2{'ack-match': False, 'failed-retain': None, 'inflight-preserve': ['a'], 'promote-queued': None, 'queued-replace': None, 'send-now': ['b']}{'ack-match': False, 'failed-retain': ['a'], 'inflight-preserve': ['a'], 'promote-queued': None, 'queued-replace': None, 'send-now': ['b']}Failed
contract fixture 3{'ack-match': False, 'failed-retain': None, 'inflight-preserve': ['a'], 'promote-queued': None, 'queued-replace': ['b'], 'send-now': None}{'ack-match': False, 'failed-retain': ['a'], 'inflight-preserve': ['a'], 'promote-queued': None, 'queued-replace': ['b'], 'send-now': None}Failed
contract fixture 4{'ack-match': True, 'failed-retain': None, 'inflight-preserve': ['a'], 'promote-queued': None, 'queued-replace': ['b'], 'send-now': None}{'ack-match': True, 'failed-retain': ['a'], 'inflight-preserve': ['a'], 'promote-queued': None, 'queued-replace': ['b'], 'send-now': None}Failed
contract fixture 5{'ack-match': False, 'failed-retain': None, 'inflight-preserve': ['a'], 'promote-queued': None, 'queued-replace': ['b'], 'send-now': None}{'ack-match': False, 'failed-retain': ['a'], 'inflight-preserve': ['a'], 'promote-queued': None, 'queued-replace': ['b'], 'send-now': None}Failed
contract fixture 6{'ack-match': False, 'failed-retain': None, 'inflight-preserve': ['a'], 'promote-queued': None, 'queued-replace': None, 'send-now': ['b']}{'ack-match': False, 'failed-retain': ['a'], 'inflight-preserve': ['a'], 'promote-queued': None, 'queued-replace': None, 'send-now': ['b']}Failed
contract fixture 7{'ack-match': True, 'failed-retain': None, 'inflight-preserve': ['a'], 'promote-queued': ['c'], 'queued-replace': None, 'send-now': ['b']}{'ack-match': True, 'failed-retain': ['a'], 'inflight-preserve': ['a'], 'promote-queued': ['c'], 'queued-replace': None, 'send-now': ['b']}Failed
contract fixture 8{'ack-match': False, 'failed-retain': None, 'inflight-preserve': ['a'], 'promote-queued': None, 'queued-replace': None, 'send-now': ['b']}{'ack-match': False, 'failed-retain': ['a'], 'inflight-preserve': ['a'], 'promote-queued': None, 'queued-replace': None, 'send-now': ['b']}Failed
contract fixture 9{'ack-match': False, 'failed-retain': None, 'inflight-preserve': ['a'], 'promote-queued': None, 'queued-replace': ['b'], 'send-now': None}{'ack-match': False, 'failed-retain': ['a'], 'inflight-preserve': ['a'], 'promote-queued': None, 'queued-replace': ['b'], 'send-now': None}Failed

SHA-256 / bf3db5a49e3bac458d02333c27c8ed98fe017e7c6ae531dd95ce5bcbbe9788ee

3 / The verified repair

Exit 0
"""Failure Map reference implementation. Python standard library only."""
import json

N = 1
observations = []
def solve(d):
    return {'inflight-preserve':(d['inflight']), 'queued-replace':(d['latest'] if d['busy'] else None), 'ack-match':(d['ack']==d['sent']), 'promote-queued':(d['queued'] if d['ack']==d['sent'] and d['queued'] is not None else None), 'failed-retain':(d['inflight'] if d['failed'] else None), 'send-now':(d['latest'] if not d['busy'] and d['valid'] else None)}
def check(label, actual, expected):
    observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
fixtures = {1: [({'inflight': ['a'], 'latest': ['b'], 'queued': None, 'busy': False, 'ack': 1, 'sent': 2, 'failed': True, 'valid': False}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': False, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': None, 'busy': False, 'ack': 2, 'sent': 2, 'failed': True, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': True, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': ['b']}), ({'inflight': ['a'], 'latest': ['b'], 'queued': None, 'busy': False, 'ack': 3, 'sent': 2, 'failed': True, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': False, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': ['b']}), ({'inflight': ['a'], 'latest': ['b'], 'queued': None, 'busy': True, 'ack': 1, 'sent': 2, 'failed': True, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': ['b'], 'ack-match': False, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': None, 'busy': True, 'ack': 2, 'sent': 2, 'failed': True, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': ['b'], 'ack-match': True, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': None, 'busy': True, 'ack': 3, 'sent': 2, 'failed': True, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': ['b'], 'ack-match': False, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': False, 'ack': 1, 'sent': 2, 'failed': True, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': False, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': ['b']}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': False, 'ack': 2, 'sent': 2, 'failed': True, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': True, 'promote-queued': ['c'], 'failed-retain': ['a'], 'send-now': ['b']}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': False, 'ack': 3, 'sent': 2, 'failed': True, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': False, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': ['b']}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': True, 'ack': 1, 'sent': 2, 'failed': True, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': ['b'], 'ack-match': False, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': None})], 2: [({'inflight': ['a'], 'latest': ['b'], 'queued': None, 'busy': False, 'ack': 1, 'sent': 2, 'failed': True, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': False, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': ['b']}), ({'inflight': ['a'], 'latest': ['b'], 'queued': None, 'busy': True, 'ack': 1, 'sent': 2, 'failed': True, 'valid': False}, {'inflight-preserve': ['a'], 'queued-replace': ['b'], 'ack-match': False, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': None, 'busy': True, 'ack': 2, 'sent': 2, 'failed': True, 'valid': False}, {'inflight-preserve': ['a'], 'queued-replace': ['b'], 'ack-match': True, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': None, 'busy': True, 'ack': 3, 'sent': 2, 'failed': True, 'valid': False}, {'inflight-preserve': ['a'], 'queued-replace': ['b'], 'ack-match': False, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': False, 'ack': 1, 'sent': 2, 'failed': True, 'valid': False}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': False, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': False, 'ack': 2, 'sent': 2, 'failed': True, 'valid': False}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': True, 'promote-queued': ['c'], 'failed-retain': ['a'], 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': False, 'ack': 3, 'sent': 2, 'failed': True, 'valid': False}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': False, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': True, 'ack': 1, 'sent': 2, 'failed': True, 'valid': False}, {'inflight-preserve': ['a'], 'queued-replace': ['b'], 'ack-match': False, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': True, 'ack': 2, 'sent': 2, 'failed': True, 'valid': False}, {'inflight-preserve': ['a'], 'queued-replace': ['b'], 'ack-match': True, 'promote-queued': ['c'], 'failed-retain': ['a'], 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': True, 'ack': 3, 'sent': 2, 'failed': True, 'valid': False}, {'inflight-preserve': ['a'], 'queued-replace': ['b'], 'ack-match': False, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': None})], 3: [({'inflight': ['a'], 'latest': ['b'], 'queued': None, 'busy': False, 'ack': 2, 'sent': 2, 'failed': True, 'valid': False}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': True, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': None, 'busy': True, 'ack': 2, 'sent': 2, 'failed': True, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': ['b'], 'ack-match': True, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': None, 'busy': True, 'ack': 3, 'sent': 2, 'failed': False, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': ['b'], 'ack-match': False, 'promote-queued': None, 'failed-retain': None, 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': False, 'ack': 1, 'sent': 2, 'failed': False, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': False, 'promote-queued': None, 'failed-retain': None, 'send-now': ['b']}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': False, 'ack': 2, 'sent': 2, 'failed': False, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': True, 'promote-queued': ['c'], 'failed-retain': None, 'send-now': ['b']}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': False, 'ack': 3, 'sent': 2, 'failed': False, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': False, 'promote-queued': None, 'failed-retain': None, 'send-now': ['b']}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': True, 'ack': 1, 'sent': 2, 'failed': False, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': ['b'], 'ack-match': False, 'promote-queued': None, 'failed-retain': None, 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': True, 'ack': 2, 'sent': 2, 'failed': False, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': ['b'], 'ack-match': True, 'promote-queued': ['c'], 'failed-retain': None, 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': True, 'ack': 3, 'sent': 2, 'failed': False, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': ['b'], 'ack-match': False, 'promote-queued': None, 'failed-retain': None, 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': None, 'busy': False, 'ack': 1, 'sent': 2, 'failed': False, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': False, 'promote-queued': None, 'failed-retain': None, 'send-now': ['b']})], 4: [({'inflight': ['a'], 'latest': ['b'], 'queued': None, 'busy': False, 'ack': 2, 'sent': 2, 'failed': True, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': True, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': ['b']}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': False, 'ack': 1, 'sent': 2, 'failed': True, 'valid': False}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': False, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': False, 'ack': 2, 'sent': 2, 'failed': False, 'valid': False}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': True, 'promote-queued': ['c'], 'failed-retain': None, 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': False, 'ack': 3, 'sent': 2, 'failed': False, 'valid': False}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': False, 'promote-queued': None, 'failed-retain': None, 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': True, 'ack': 1, 'sent': 2, 'failed': False, 'valid': False}, {'inflight-preserve': ['a'], 'queued-replace': ['b'], 'ack-match': False, 'promote-queued': None, 'failed-retain': None, 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': True, 'ack': 2, 'sent': 2, 'failed': False, 'valid': False}, {'inflight-preserve': ['a'], 'queued-replace': ['b'], 'ack-match': True, 'promote-queued': ['c'], 'failed-retain': None, 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': True, 'ack': 3, 'sent': 2, 'failed': False, 'valid': False}, {'inflight-preserve': ['a'], 'queued-replace': ['b'], 'ack-match': False, 'promote-queued': None, 'failed-retain': None, 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': None, 'busy': False, 'ack': 1, 'sent': 2, 'failed': False, 'valid': False}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': False, 'promote-queued': None, 'failed-retain': None, 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': None, 'busy': False, 'ack': 2, 'sent': 2, 'failed': False, 'valid': False}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': True, 'promote-queued': None, 'failed-retain': None, 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': None, 'busy': False, 'ack': 3, 'sent': 2, 'failed': False, 'valid': False}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': False, 'promote-queued': None, 'failed-retain': None, 'send-now': None})], 5: [({'inflight': ['a'], 'latest': ['b'], 'queued': None, 'busy': False, 'ack': 3, 'sent': 2, 'failed': True, 'valid': False}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': False, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': False, 'ack': 2, 'sent': 2, 'failed': True, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': True, 'promote-queued': ['c'], 'failed-retain': ['a'], 'send-now': ['b']}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': False, 'ack': 3, 'sent': 2, 'failed': True, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': False, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': ['b']}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': True, 'ack': 1, 'sent': 2, 'failed': True, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': ['b'], 'ack-match': False, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': True, 'ack': 2, 'sent': 2, 'failed': True, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': ['b'], 'ack-match': True, 'promote-queued': ['c'], 'failed-retain': ['a'], 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': ['c'], 'busy': True, 'ack': 3, 'sent': 2, 'failed': True, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': ['b'], 'ack-match': False, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': None}), ({'inflight': ['a'], 'latest': ['b'], 'queued': None, 'busy': False, 'ack': 1, 'sent': 2, 'failed': True, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': False, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': ['b']}), ({'inflight': ['a'], 'latest': ['b'], 'queued': None, 'busy': False, 'ack': 2, 'sent': 2, 'failed': True, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': True, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': ['b']}), ({'inflight': ['a'], 'latest': ['b'], 'queued': None, 'busy': False, 'ack': 3, 'sent': 2, 'failed': True, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': None, 'ack-match': False, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': ['b']}), ({'inflight': ['a'], 'latest': ['b'], 'queued': None, 'busy': True, 'ack': 1, 'sent': 2, 'failed': True, 'valid': True}, {'inflight-preserve': ['a'], 'queued-replace': ['b'], 'ack-match': False, 'promote-queued': None, 'failed-retain': ['a'], 'send-now': None})]}
for index, (data, expected) in enumerate(fixtures[N]):
    check("contract fixture " + str(index), solve(data), expected)
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
contract fixture 0{'ack-match': False, 'failed-retain': ['a'], 'inflight-preserve': ['a'], 'promote-queued': None, 'queued-replace': None, 'send-now': None}{'ack-match': False, 'failed-retain': ['a'], 'inflight-preserve': ['a'], 'promote-queued': None, 'queued-replace': None, 'send-now': None}Passed
contract fixture 1{'ack-match': True, 'failed-retain': ['a'], 'inflight-preserve': ['a'], 'promote-queued': None, 'queued-replace': None, 'send-now': ['b']}{'ack-match': True, 'failed-retain': ['a'], 'inflight-preserve': ['a'], 'promote-queued': None, 'queued-replace': None, 'send-now': ['b']}Passed
contract fixture 2{'ack-match': False, 'failed-retain': ['a'], 'inflight-preserve': ['a'], 'promote-queued': None, 'queued-replace': None, 'send-now': ['b']}{'ack-match': False, 'failed-retain': ['a'], 'inflight-preserve': ['a'], 'promote-queued': None, 'queued-replace': None, 'send-now': ['b']}Passed
contract fixture 3{'ack-match': False, 'failed-retain': ['a'], 'inflight-preserve': ['a'], 'promote-queued': None, 'queued-replace': ['b'], 'send-now': None}{'ack-match': False, 'failed-retain': ['a'], 'inflight-preserve': ['a'], 'promote-queued': None, 'queued-replace': ['b'], 'send-now': None}Passed
contract fixture 4{'ack-match': True, 'failed-retain': ['a'], 'inflight-preserve': ['a'], 'promote-queued': None, 'queued-replace': ['b'], 'send-now': None}{'ack-match': True, 'failed-retain': ['a'], 'inflight-preserve': ['a'], 'promote-queued': None, 'queued-replace': ['b'], 'send-now': None}Passed
contract fixture 5{'ack-match': False, 'failed-retain': ['a'], 'inflight-preserve': ['a'], 'promote-queued': None, 'queued-replace': ['b'], 'send-now': None}{'ack-match': False, 'failed-retain': ['a'], 'inflight-preserve': ['a'], 'promote-queued': None, 'queued-replace': ['b'], 'send-now': None}Passed
contract fixture 6{'ack-match': False, 'failed-retain': ['a'], 'inflight-preserve': ['a'], 'promote-queued': None, 'queued-replace': None, 'send-now': ['b']}{'ack-match': False, 'failed-retain': ['a'], 'inflight-preserve': ['a'], 'promote-queued': None, 'queued-replace': None, 'send-now': ['b']}Passed
contract fixture 7{'ack-match': True, 'failed-retain': ['a'], 'inflight-preserve': ['a'], 'promote-queued': ['c'], 'queued-replace': None, 'send-now': ['b']}{'ack-match': True, 'failed-retain': ['a'], 'inflight-preserve': ['a'], 'promote-queued': ['c'], 'queued-replace': None, 'send-now': ['b']}Passed
contract fixture 8{'ack-match': False, 'failed-retain': ['a'], 'inflight-preserve': ['a'], 'promote-queued': None, 'queued-replace': None, 'send-now': ['b']}{'ack-match': False, 'failed-retain': ['a'], 'inflight-preserve': ['a'], 'promote-queued': None, 'queued-replace': None, 'send-now': ['b']}Passed
contract fixture 9{'ack-match': False, 'failed-retain': ['a'], 'inflight-preserve': ['a'], 'promote-queued': None, 'queued-replace': ['b'], 'send-now': None}{'ack-match': False, 'failed-retain': ['a'], 'inflight-preserve': ['a'], 'promote-queued': None, 'queued-replace': ['b'], 'send-now': None}Passed

SHA-256 / 7acf94b1709d4a8f8e7af40dcdbc1bfb246c47fd883d4272a4cf446ff61c1e17

Verification & scope

Deterministic bounded UI-state model only; no browser, query engine, network, or production-standard 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 2026-09-29T14:41:12.200688+00:00.

Case digest / 6b89918f5769095d4ee8000fe02665bfa06a08d067e27ff39c7899f37fa2a622