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FA-25996 / Filter interfaces / Open access

Only valid current-draft estimates display a count · case 01

Only valid current-draft estimates display a count is violated by the widget projection.

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ROOT CAUSE

The estimate-display decision uses `d['count']` instead of the stipulated draft-preview projection.

THE FAILURE

The estimate-display decision uses `d['count']` instead of the stipulated draft-preview projection.

Unsuccessful approach: The attempted correction `d['count'] if d['valid'] else None` still violates the explicit contract fixtures.

Case contract

A filter preview is a noncommitting projection tagged with draft revision and scope. Invalid drafts cancel preview and stale replies do not replace the current estimate. This example checks: Only valid current-draft estimates display a count.

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 {'request-gate':(d['valid'] and d['open']), 'reply-accept':(d['reply_revision']==d['draft_revision'] and d['reply_scope']==d['scope']), 'committed-preserve':(d['committed']), 'estimate-display':(d['count']), 'empty-estimate':(d['count']==0 and d['reply_revision']==d['draft_revision'] and d['valid']), 'preview-busy':(d['open'] and d['valid'] and d['reply_revision']!=d['draft_revision'])}
def check(label, actual, expected):
    observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
fixtures = {1: [({'valid': False, 'open': False, 'reply_revision': 1, 'draft_revision': 2, 'reply_scope': 'a', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 0}, {'request-gate': False, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': False}), ({'valid': True, 'open': False, 'reply_revision': 1, 'draft_revision': 2, 'reply_scope': 'b', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 5}, {'request-gate': False, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': False}), ({'valid': False, 'open': False, 'reply_revision': 2, 'draft_revision': 2, 'reply_scope': 'b', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 5}, {'request-gate': False, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': False}), ({'valid': False, 'open': True, 'reply_revision': 1, 'draft_revision': 2, 'reply_scope': 'a', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 5}, {'request-gate': False, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': False}), ({'valid': False, 'open': True, 'reply_revision': 1, 'draft_revision': 2, 'reply_scope': 'b', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 5}, {'request-gate': False, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': False}), ({'valid': False, 'open': True, 'reply_revision': 2, 'draft_revision': 2, 'reply_scope': 'a', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 5}, {'request-gate': False, 'reply-accept': True, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': False}), ({'valid': False, 'open': True, 'reply_revision': 2, 'draft_revision': 2, 'reply_scope': 'b', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 5}, {'request-gate': False, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': False}), ({'valid': True, 'open': False, 'reply_revision': 1, 'draft_revision': 2, 'reply_scope': 'a', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 5}, {'request-gate': False, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': False}), ({'valid': True, 'open': False, 'reply_revision': 2, 'draft_revision': 2, 'reply_scope': 'a', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 5}, {'request-gate': False, 'reply-accept': True, 'committed-preserve': ['x'], 'estimate-display': 5, 'empty-estimate': False, 'preview-busy': False}), ({'valid': True, 'open': False, 'reply_revision': 2, 'draft_revision': 2, 'reply_scope': 'b', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 5}, {'request-gate': False, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': 5, 'empty-estimate': False, 'preview-busy': False})], 2: [({'valid': False, 'open': False, 'reply_revision': 1, 'draft_revision': 2, 'reply_scope': 'a', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 5}, {'request-gate': False, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': False}), ({'valid': True, 'open': True, 'reply_revision': 1, 'draft_revision': 2, 'reply_scope': 'b', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 0}, {'request-gate': True, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': True}), ({'valid': False, 'open': True, 'reply_revision': 2, 'draft_revision': 2, 'reply_scope': 'b', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 0}, {'request-gate': False, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': False}), ({'valid': True, 'open': False, 'reply_revision': 1, 'draft_revision': 2, 'reply_scope': 'a', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 0}, {'request-gate': False, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': False}), ({'valid': True, 'open': False, 'reply_revision': 1, 'draft_revision': 2, 'reply_scope': 'b', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 0}, {'request-gate': False, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': False}), ({'valid': True, 'open': False, 'reply_revision': 2, 'draft_revision': 2, 'reply_scope': 'a', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 0}, {'request-gate': False, 'reply-accept': True, 'committed-preserve': ['x'], 'estimate-display': 0, 'empty-estimate': True, 'preview-busy': False}), ({'valid': True, 'open': False, 'reply_revision': 2, 'draft_revision': 2, 'reply_scope': 'b', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 0}, {'request-gate': False, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': 0, 'empty-estimate': True, 'preview-busy': False}), ({'valid': True, 'open': True, 'reply_revision': 1, 'draft_revision': 2, 'reply_scope': 'a', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 0}, {'request-gate': True, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': True}), ({'valid': True, 'open': True, 'reply_revision': 2, 'draft_revision': 2, 'reply_scope': 'a', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 0}, {'request-gate': True, 'reply-accept': True, 'committed-preserve': ['x'], 'estimate-display': 0, 'empty-estimate': True, 'preview-busy': False}), ({'valid': True, 'open': True, 'reply_revision': 2, 'draft_revision': 2, 'reply_scope': 'b', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 0}, {'request-gate': True, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': 0, 'empty-estimate': True, 'preview-busy': False})], 3: [({'valid': False, 'open': False, 'reply_revision': 1, 'draft_revision': 2, 'reply_scope': 'b', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 0}, {'request-gate': False, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': False}), ({'valid': True, 'open': False, 'reply_revision': 1, 'draft_revision': 2, 'reply_scope': 'a', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 5}, {'request-gate': False, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': False}), ({'valid': True, 'open': False, 'reply_revision': 2, 'draft_revision': 2, 'reply_scope': 'a', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 5}, {'request-gate': False, 'reply-accept': True, 'committed-preserve': ['x'], 'estimate-display': 5, 'empty-estimate': False, 'preview-busy': False}), ({'valid': True, 'open': False, 'reply_revision': 2, 'draft_revision': 2, 'reply_scope': 'b', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 5}, {'request-gate': False, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': 5, 'empty-estimate': False, 'preview-busy': False}), ({'valid': True, 'open': True, 'reply_revision': 1, 'draft_revision': 2, 'reply_scope': 'a', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 5}, {'request-gate': True, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': True}), ({'valid': True, 'open': True, 'reply_revision': 1, 'draft_revision': 2, 'reply_scope': 'b', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 5}, {'request-gate': True, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': True}), ({'valid': True, 'open': True, 'reply_revision': 2, 'draft_revision': 2, 'reply_scope': 'a', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 5}, {'request-gate': True, 'reply-accept': True, 'committed-preserve': ['x'], 'estimate-display': 5, 'empty-estimate': False, 'preview-busy': False}), ({'valid': True, 'open': True, 'reply_revision': 2, 'draft_revision': 2, 'reply_scope': 'b', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 5}, {'request-gate': True, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': 5, 'empty-estimate': False, 'preview-busy': False}), ({'valid': False, 'open': False, 'reply_revision': 1, 'draft_revision': 2, 'reply_scope': 'a', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 5}, {'request-gate': False, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': False}), ({'valid': False, 'open': False, 'reply_revision': 1, 'draft_revision': 2, 'reply_scope': 'b', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 5}, {'request-gate': False, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': False})], 4: [({'valid': False, 'open': False, 'reply_revision': 1, 'draft_revision': 2, 'reply_scope': 'b', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 5}, {'request-gate': False, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': False}), ({'valid': True, 'open': True, 'reply_revision': 1, 'draft_revision': 2, 'reply_scope': 'a', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 0}, {'request-gate': True, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': True}), ({'valid': True, 'open': True, 'reply_revision': 2, 'draft_revision': 2, 'reply_scope': 'a', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 0}, {'request-gate': True, 'reply-accept': True, 'committed-preserve': ['x'], 'estimate-display': 0, 'empty-estimate': True, 'preview-busy': False}), ({'valid': True, 'open': True, 'reply_revision': 2, 'draft_revision': 2, 'reply_scope': 'b', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 0}, {'request-gate': True, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': 0, 'empty-estimate': True, 'preview-busy': False}), ({'valid': False, 'open': False, 'reply_revision': 1, 'draft_revision': 2, 'reply_scope': 'a', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 0}, {'request-gate': False, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': False}), ({'valid': False, 'open': False, 'reply_revision': 1, 'draft_revision': 2, 'reply_scope': 'b', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 0}, {'request-gate': False, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': False}), ({'valid': False, 'open': False, 'reply_revision': 2, 'draft_revision': 2, 'reply_scope': 'a', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 0}, {'request-gate': False, 'reply-accept': True, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': False}), ({'valid': False, 'open': False, 'reply_revision': 2, 'draft_revision': 2, 'reply_scope': 'b', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 0}, {'request-gate': False, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': False}), ({'valid': False, 'open': True, 'reply_revision': 1, 'draft_revision': 2, 'reply_scope': 'a', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 0}, {'request-gate': False, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': False}), ({'valid': False, 'open': True, 'reply_revision': 1, 'draft_revision': 2, 'reply_scope': 'b', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 0}, {'request-gate': False, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': False})], 5: [({'valid': False, 'open': False, 'reply_revision': 2, 'draft_revision': 2, 'reply_scope': 'a', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 0}, {'request-gate': False, 'reply-accept': True, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': False}), ({'valid': True, 'open': True, 'reply_revision': 1, 'draft_revision': 2, 'reply_scope': 'b', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 5}, {'request-gate': True, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': True}), ({'valid': False, 'open': False, 'reply_revision': 1, 'draft_revision': 2, 'reply_scope': 'b', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 5}, {'request-gate': False, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': False}), ({'valid': False, 'open': False, 'reply_revision': 2, 'draft_revision': 2, 'reply_scope': 'a', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 5}, {'request-gate': False, 'reply-accept': True, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': False}), ({'valid': False, 'open': False, 'reply_revision': 2, 'draft_revision': 2, 'reply_scope': 'b', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 5}, {'request-gate': False, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': False}), ({'valid': False, 'open': True, 'reply_revision': 1, 'draft_revision': 2, 'reply_scope': 'a', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 5}, {'request-gate': False, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': False}), ({'valid': False, 'open': True, 'reply_revision': 1, 'draft_revision': 2, 'reply_scope': 'b', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 5}, {'request-gate': False, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': False}), ({'valid': False, 'open': True, 'reply_revision': 2, 'draft_revision': 2, 'reply_scope': 'a', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 5}, {'request-gate': False, 'reply-accept': True, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': False}), ({'valid': False, 'open': True, 'reply_revision': 2, 'draft_revision': 2, 'reply_scope': 'b', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 5}, {'request-gate': False, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': False}), ({'valid': True, 'open': False, 'reply_revision': 1, 'draft_revision': 2, 'reply_scope': 'a', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 5}, {'request-gate': False, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': False})]}
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{'committed-preserve': ['x'], 'empty-estimate': False, 'estimate-display': 0, 'preview-busy': False, 'reply-accept': False, 'request-gate': False}{'committed-preserve': ['x'], 'empty-estimate': False, 'estimate-display': None, 'preview-busy': False, 'reply-accept': False, 'request-gate': False}Failed
contract fixture 1{'committed-preserve': ['x'], 'empty-estimate': False, 'estimate-display': 5, 'preview-busy': False, 'reply-accept': False, 'request-gate': False}{'committed-preserve': ['x'], 'empty-estimate': False, 'estimate-display': None, 'preview-busy': False, 'reply-accept': False, 'request-gate': False}Failed
contract fixture 2{'committed-preserve': ['x'], 'empty-estimate': False, 'estimate-display': 5, 'preview-busy': False, 'reply-accept': False, 'request-gate': False}{'committed-preserve': ['x'], 'empty-estimate': False, 'estimate-display': None, 'preview-busy': False, 'reply-accept': False, 'request-gate': False}Failed
contract fixture 3{'committed-preserve': ['x'], 'empty-estimate': False, 'estimate-display': 5, 'preview-busy': False, 'reply-accept': False, 'request-gate': False}{'committed-preserve': ['x'], 'empty-estimate': False, 'estimate-display': None, 'preview-busy': False, 'reply-accept': False, 'request-gate': False}Failed
contract fixture 4{'committed-preserve': ['x'], 'empty-estimate': False, 'estimate-display': 5, 'preview-busy': False, 'reply-accept': False, 'request-gate': False}{'committed-preserve': ['x'], 'empty-estimate': False, 'estimate-display': None, 'preview-busy': False, 'reply-accept': False, 'request-gate': False}Failed
contract fixture 5{'committed-preserve': ['x'], 'empty-estimate': False, 'estimate-display': 5, 'preview-busy': False, 'reply-accept': True, 'request-gate': False}{'committed-preserve': ['x'], 'empty-estimate': False, 'estimate-display': None, 'preview-busy': False, 'reply-accept': True, 'request-gate': False}Failed
contract fixture 6{'committed-preserve': ['x'], 'empty-estimate': False, 'estimate-display': 5, 'preview-busy': False, 'reply-accept': False, 'request-gate': False}{'committed-preserve': ['x'], 'empty-estimate': False, 'estimate-display': None, 'preview-busy': False, 'reply-accept': False, 'request-gate': False}Failed
contract fixture 7{'committed-preserve': ['x'], 'empty-estimate': False, 'estimate-display': 5, 'preview-busy': False, 'reply-accept': False, 'request-gate': False}{'committed-preserve': ['x'], 'empty-estimate': False, 'estimate-display': None, 'preview-busy': False, 'reply-accept': False, 'request-gate': False}Failed
contract fixture 8{'committed-preserve': ['x'], 'empty-estimate': False, 'estimate-display': 5, 'preview-busy': False, 'reply-accept': True, 'request-gate': False}{'committed-preserve': ['x'], 'empty-estimate': False, 'estimate-display': 5, 'preview-busy': False, 'reply-accept': True, 'request-gate': False}Passed
contract fixture 9{'committed-preserve': ['x'], 'empty-estimate': False, 'estimate-display': 5, 'preview-busy': False, 'reply-accept': False, 'request-gate': False}{'committed-preserve': ['x'], 'empty-estimate': False, 'estimate-display': 5, 'preview-busy': False, 'reply-accept': False, 'request-gate': False}Passed

SHA-256 / 0a040d802f75d138a8786e2094e9b8139e4298dc826ccf3ffb4459c0a8451687

2 / The unsuccessful fix

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

N = 1
observations = []
def solve(d):
    return {'request-gate':(d['valid'] and d['open']), 'reply-accept':(d['reply_revision']==d['draft_revision'] and d['reply_scope']==d['scope']), 'committed-preserve':(d['committed']), 'estimate-display':(d['count'] if d['valid'] else None), 'empty-estimate':(d['count']==0 and d['reply_revision']==d['draft_revision'] and d['valid']), 'preview-busy':(d['open'] and d['valid'] and d['reply_revision']!=d['draft_revision'])}
def check(label, actual, expected):
    observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
fixtures = {1: [({'valid': False, 'open': False, 'reply_revision': 1, 'draft_revision': 2, 'reply_scope': 'a', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 0}, {'request-gate': False, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': False}), ({'valid': True, 'open': False, 'reply_revision': 1, 'draft_revision': 2, 'reply_scope': 'b', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 5}, {'request-gate': False, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': False}), ({'valid': False, 'open': False, 'reply_revision': 2, 'draft_revision': 2, 'reply_scope': 'b', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 5}, {'request-gate': False, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': False}), ({'valid': False, 'open': True, 'reply_revision': 1, 'draft_revision': 2, 'reply_scope': 'a', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 5}, {'request-gate': False, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': False}), ({'valid': False, 'open': True, 'reply_revision': 1, 'draft_revision': 2, 'reply_scope': 'b', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 5}, {'request-gate': False, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': False}), ({'valid': False, 'open': True, 'reply_revision': 2, 'draft_revision': 2, 'reply_scope': 'a', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 5}, {'request-gate': False, 'reply-accept': True, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': False}), ({'valid': False, 'open': True, 'reply_revision': 2, 'draft_revision': 2, 'reply_scope': 'b', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 5}, {'request-gate': False, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': False}), ({'valid': True, 'open': False, 'reply_revision': 1, 'draft_revision': 2, 'reply_scope': 'a', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 5}, {'request-gate': False, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': False}), ({'valid': True, 'open': False, 'reply_revision': 2, 'draft_revision': 2, 'reply_scope': 'a', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 5}, {'request-gate': False, 'reply-accept': True, 'committed-preserve': ['x'], 'estimate-display': 5, 'empty-estimate': False, 'preview-busy': False}), ({'valid': True, 'open': False, 'reply_revision': 2, 'draft_revision': 2, 'reply_scope': 'b', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 5}, {'request-gate': False, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': 5, 'empty-estimate': False, 'preview-busy': False})], 2: [({'valid': False, 'open': False, 'reply_revision': 1, 'draft_revision': 2, 'reply_scope': 'a', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 5}, {'request-gate': False, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': False}), ({'valid': True, 'open': True, 'reply_revision': 1, 'draft_revision': 2, 'reply_scope': 'b', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 0}, {'request-gate': True, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': True}), ({'valid': False, 'open': True, 'reply_revision': 2, 'draft_revision': 2, 'reply_scope': 'b', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 0}, {'request-gate': False, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': False}), ({'valid': True, 'open': False, 'reply_revision': 1, 'draft_revision': 2, 'reply_scope': 'a', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 0}, {'request-gate': False, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': False}), ({'valid': True, 'open': False, 'reply_revision': 1, 'draft_revision': 2, 'reply_scope': 'b', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 0}, {'request-gate': False, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': False}), ({'valid': True, 'open': False, 'reply_revision': 2, 'draft_revision': 2, 'reply_scope': 'a', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 0}, {'request-gate': False, 'reply-accept': True, 'committed-preserve': ['x'], 'estimate-display': 0, 'empty-estimate': True, 'preview-busy': False}), ({'valid': True, 'open': False, 'reply_revision': 2, 'draft_revision': 2, 'reply_scope': 'b', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 0}, {'request-gate': False, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': 0, 'empty-estimate': True, 'preview-busy': False}), ({'valid': True, 'open': True, 'reply_revision': 1, 'draft_revision': 2, 'reply_scope': 'a', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 0}, {'request-gate': True, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': True}), ({'valid': True, 'open': True, 'reply_revision': 2, 'draft_revision': 2, 'reply_scope': 'a', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 0}, {'request-gate': True, 'reply-accept': True, 'committed-preserve': ['x'], 'estimate-display': 0, 'empty-estimate': True, 'preview-busy': False}), ({'valid': True, 'open': True, 'reply_revision': 2, 'draft_revision': 2, 'reply_scope': 'b', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 0}, {'request-gate': True, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': 0, 'empty-estimate': True, 'preview-busy': False})], 3: [({'valid': False, 'open': False, 'reply_revision': 1, 'draft_revision': 2, 'reply_scope': 'b', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 0}, {'request-gate': False, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': False}), ({'valid': True, 'open': False, 'reply_revision': 1, 'draft_revision': 2, 'reply_scope': 'a', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 5}, {'request-gate': False, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': False}), ({'valid': True, 'open': False, 'reply_revision': 2, 'draft_revision': 2, 'reply_scope': 'a', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 5}, {'request-gate': False, 'reply-accept': True, 'committed-preserve': ['x'], 'estimate-display': 5, 'empty-estimate': False, 'preview-busy': False}), ({'valid': True, 'open': False, 'reply_revision': 2, 'draft_revision': 2, 'reply_scope': 'b', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 5}, {'request-gate': False, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': 5, 'empty-estimate': False, 'preview-busy': False}), ({'valid': True, 'open': True, 'reply_revision': 1, 'draft_revision': 2, 'reply_scope': 'a', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 5}, {'request-gate': True, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': True}), ({'valid': True, 'open': True, 'reply_revision': 1, 'draft_revision': 2, 'reply_scope': 'b', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 5}, {'request-gate': True, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': True}), ({'valid': True, 'open': True, 'reply_revision': 2, 'draft_revision': 2, 'reply_scope': 'a', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 5}, {'request-gate': True, 'reply-accept': True, 'committed-preserve': ['x'], 'estimate-display': 5, 'empty-estimate': False, 'preview-busy': False}), ({'valid': True, 'open': True, 'reply_revision': 2, 'draft_revision': 2, 'reply_scope': 'b', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 5}, {'request-gate': True, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': 5, 'empty-estimate': False, 'preview-busy': False}), ({'valid': False, 'open': False, 'reply_revision': 1, 'draft_revision': 2, 'reply_scope': 'a', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 5}, {'request-gate': False, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': False}), ({'valid': False, 'open': False, 'reply_revision': 1, 'draft_revision': 2, 'reply_scope': 'b', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 5}, {'request-gate': False, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': False})], 4: [({'valid': False, 'open': False, 'reply_revision': 1, 'draft_revision': 2, 'reply_scope': 'b', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 5}, {'request-gate': False, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': False}), ({'valid': True, 'open': True, 'reply_revision': 1, 'draft_revision': 2, 'reply_scope': 'a', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 0}, {'request-gate': True, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': True}), ({'valid': True, 'open': True, 'reply_revision': 2, 'draft_revision': 2, 'reply_scope': 'a', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 0}, {'request-gate': True, 'reply-accept': True, 'committed-preserve': ['x'], 'estimate-display': 0, 'empty-estimate': True, 'preview-busy': False}), ({'valid': True, 'open': True, 'reply_revision': 2, 'draft_revision': 2, 'reply_scope': 'b', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 0}, {'request-gate': True, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': 0, 'empty-estimate': True, 'preview-busy': False}), ({'valid': False, 'open': False, 'reply_revision': 1, 'draft_revision': 2, 'reply_scope': 'a', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 0}, {'request-gate': False, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': False}), ({'valid': False, 'open': False, 'reply_revision': 1, 'draft_revision': 2, 'reply_scope': 'b', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 0}, {'request-gate': False, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': False}), ({'valid': False, 'open': False, 'reply_revision': 2, 'draft_revision': 2, 'reply_scope': 'a', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 0}, {'request-gate': False, 'reply-accept': True, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': False}), ({'valid': False, 'open': False, 'reply_revision': 2, 'draft_revision': 2, 'reply_scope': 'b', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 0}, {'request-gate': False, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': False}), ({'valid': False, 'open': True, 'reply_revision': 1, 'draft_revision': 2, 'reply_scope': 'a', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 0}, {'request-gate': False, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': False}), ({'valid': False, 'open': True, 'reply_revision': 1, 'draft_revision': 2, 'reply_scope': 'b', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 0}, {'request-gate': False, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': False})], 5: [({'valid': False, 'open': False, 'reply_revision': 2, 'draft_revision': 2, 'reply_scope': 'a', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 0}, {'request-gate': False, 'reply-accept': True, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': False}), ({'valid': True, 'open': True, 'reply_revision': 1, 'draft_revision': 2, 'reply_scope': 'b', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 5}, {'request-gate': True, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': True}), ({'valid': False, 'open': False, 'reply_revision': 1, 'draft_revision': 2, 'reply_scope': 'b', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 5}, {'request-gate': False, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': False}), ({'valid': False, 'open': False, 'reply_revision': 2, 'draft_revision': 2, 'reply_scope': 'a', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 5}, {'request-gate': False, 'reply-accept': True, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': False}), ({'valid': False, 'open': False, 'reply_revision': 2, 'draft_revision': 2, 'reply_scope': 'b', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 5}, {'request-gate': False, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': False}), ({'valid': False, 'open': True, 'reply_revision': 1, 'draft_revision': 2, 'reply_scope': 'a', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 5}, {'request-gate': False, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': False}), ({'valid': False, 'open': True, 'reply_revision': 1, 'draft_revision': 2, 'reply_scope': 'b', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 5}, {'request-gate': False, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': False}), ({'valid': False, 'open': True, 'reply_revision': 2, 'draft_revision': 2, 'reply_scope': 'a', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 5}, {'request-gate': False, 'reply-accept': True, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': False}), ({'valid': False, 'open': True, 'reply_revision': 2, 'draft_revision': 2, 'reply_scope': 'b', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 5}, {'request-gate': False, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': False}), ({'valid': True, 'open': False, 'reply_revision': 1, 'draft_revision': 2, 'reply_scope': 'a', 'scope': 'a', 'committed': ['x'], 'draft': ['y'], 'count': 5}, {'request-gate': False, 'reply-accept': False, 'committed-preserve': ['x'], 'estimate-display': None, 'empty-estimate': False, 'preview-busy': False})]}
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{'committed-preserve': ['x'], 'empty-estimate': False, 'estimate-display': None, 'preview-busy': False, 'reply-accept': False, 'request-gate': False}{'committed-preserve': ['x'], 'empty-estimate': False, 'estimate-display': None, 'preview-busy': False, 'reply-accept': False, 'request-gate': False}Passed
contract fixture 1{'committed-preserve': ['x'], 'empty-estimate': False, 'estimate-display': 5, 'preview-busy': False, 'reply-accept': False, 'request-gate': False}{'committed-preserve': ['x'], 'empty-estimate': False, 'estimate-display': None, 'preview-busy': False, 'reply-accept': False, 'request-gate': False}Failed
contract fixture 2{'committed-preserve': ['x'], 'empty-estimate': False, 'estimate-display': None, 'preview-busy': False, 'reply-accept': False, 'request-gate': False}{'committed-preserve': ['x'], 'empty-estimate': False, 'estimate-display': None, 'preview-busy': False, 'reply-accept': False, 'request-gate': False}Passed
contract fixture 3{'committed-preserve': ['x'], 'empty-estimate': False, 'estimate-display': None, 'preview-busy': False, 'reply-accept': False, 'request-gate': False}{'committed-preserve': ['x'], 'empty-estimate': False, 'estimate-display': None, 'preview-busy': False, 'reply-accept': False, 'request-gate': False}Passed
contract fixture 4{'committed-preserve': ['x'], 'empty-estimate': False, 'estimate-display': None, 'preview-busy': False, 'reply-accept': False, 'request-gate': False}{'committed-preserve': ['x'], 'empty-estimate': False, 'estimate-display': None, 'preview-busy': False, 'reply-accept': False, 'request-gate': False}Passed
contract fixture 5{'committed-preserve': ['x'], 'empty-estimate': False, 'estimate-display': None, 'preview-busy': False, 'reply-accept': True, 'request-gate': False}{'committed-preserve': ['x'], 'empty-estimate': False, 'estimate-display': None, 'preview-busy': False, 'reply-accept': True, 'request-gate': False}Passed
contract fixture 6{'committed-preserve': ['x'], 'empty-estimate': False, 'estimate-display': None, 'preview-busy': False, 'reply-accept': False, 'request-gate': False}{'committed-preserve': ['x'], 'empty-estimate': False, 'estimate-display': None, 'preview-busy': False, 'reply-accept': False, 'request-gate': False}Passed
contract fixture 7{'committed-preserve': ['x'], 'empty-estimate': False, 'estimate-display': 5, 'preview-busy': False, 'reply-accept': False, 'request-gate': False}{'committed-preserve': ['x'], 'empty-estimate': False, 'estimate-display': None, 'preview-busy': False, 'reply-accept': False, 'request-gate': False}Failed
contract fixture 8{'committed-preserve': ['x'], 'empty-estimate': False, 'estimate-display': 5, 'preview-busy': False, 'reply-accept': True, 'request-gate': False}{'committed-preserve': ['x'], 'empty-estimate': False, 'estimate-display': 5, 'preview-busy': False, 'reply-accept': True, 'request-gate': False}Passed
contract fixture 9{'committed-preserve': ['x'], 'empty-estimate': False, 'estimate-display': 5, 'preview-busy': False, 'reply-accept': False, 'request-gate': False}{'committed-preserve': ['x'], 'empty-estimate': False, 'estimate-display': 5, 'preview-busy': False, 'reply-accept': False, 'request-gate': False}Passed

SHA-256 / e9ee12216e6c5ae3e12ed0f298cc436c9ad752c07514ea404c3e4d3a6ca3128c

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This mechanism has 10 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.

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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 2026-09-29T14:41:11.864037+00:00.

Case digest / ae58acb0084532f68586ae956b0295a213b18a5741358c91877e0d22073fa485