{"abstract":"Activation retains an obsolete hover preview.","category":"Selection controls","checks":9,"contract":"Hover changes preview only; leaving or Escape discards preview; activation commits and clears preview; repeated activation clears only when allowed; readonly ignores interaction and has no preview.","contract_signature":"committed, preview, event, value, readonly, allow_clear","evaluation_group":"xi-rating-preview","failed_approach":"Replacing it with committed still leaves provisional state active.","family":"xi-rating-preview-commit-preview","id":"FA-8926","implementations":{"attempt":{"sha256":"0b2696f33bf47918676e9e119dda7fa662833c82e75d4f4fce31013ce0d9f5e3","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(committed, preview, event, value, readonly, allow_clear):\n    if readonly: return (committed, None)\n    if event == 'hover': preview = value\n    elif event == 'leave': preview = None\n    elif event == 'activate':\n        committed = None if allow_clear and value == committed else value\n        preview = committed\n    elif event == 'escape': preview = None\n    return (committed, preview)\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\ncheck('readonly', solve(2, 4, 'activate', 5, True, True), (2, None))\ncheck('hover', solve(2, None, 'hover', 4, False, True), (2, 4))\ncheck('leave', solve(2, 4, 'leave', None, False, True), (2, None))\ncheck('locked clear', solve(2, 4, 'activate', 2, False, False), (2, None))\ncheck('change', solve(2, 4, 'activate', 5, False, True), (5, None))\ncheck('clear', solve(2, 4, 'activate', 2, False, True), (None, None))\ncheck('escape', solve(2, 4, 'escape', None, False, True), (2, None))\ncheck('parameterized rating preview', solve(0,None,'hover',N,False,False), (0,N))\nfor repetition in range(N):\n    check('repeat escape', solve(2, 4, 'escape', None, False, True), (2, None))\nprint(json.dumps({\"observations\": observations, \"passed\": all(x[\"passed\"] for x in observations)}, ensure_ascii=False))\nraise SystemExit(0 if all(x[\"passed\"] for x in observations) else 1)\n"},"broken":{"sha256":"1a0e188caaed8f84121c6c6d5d265fee8f504f58ee22bb29c92b527b31bce129","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(committed, preview, event, value, readonly, allow_clear):\n    if readonly: return (committed, None)\n    if event == 'hover': preview = value\n    elif event == 'leave': preview = None\n    elif event == 'activate':\n        committed = None if allow_clear and value == committed else value\n        preview = preview\n    elif event == 'escape': preview = None\n    return (committed, preview)\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\ncheck('readonly', solve(2, 4, 'activate', 5, True, True), (2, None))\ncheck('hover', solve(2, None, 'hover', 4, False, True), (2, 4))\ncheck('leave', solve(2, 4, 'leave', None, False, True), (2, None))\ncheck('locked clear', solve(2, 4, 'activate', 2, False, False), (2, None))\ncheck('change', solve(2, 4, 'activate', 5, False, True), (5, None))\ncheck('clear', solve(2, 4, 'activate', 2, False, True), (None, None))\ncheck('escape', solve(2, 4, 'escape', None, False, True), (2, None))\ncheck('parameterized rating preview', solve(0,None,'hover',N,False,False), (0,N))\nfor repetition in range(N):\n    check('repeat escape', solve(2, 4, 'escape', None, False, True), (2, None))\nprint(json.dumps({\"observations\": observations, \"passed\": all(x[\"passed\"] for x in observations)}, ensure_ascii=False))\nraise SystemExit(0 if all(x[\"passed\"] for x in observations) else 1)\n"}},"limitations":" 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.","method":"Deterministic executable model with adversarial boundary fixtures.","provenance":{"created_by":"Failure Map","dependencies":"Python standard library","family":"xi-rating-preview-commit-preview","generated_at":"2026-09-29T14:38:25.621633+00:00","license":"CC0-1.0","python":"3.12.14","seed":1,"split":"open-access"},"relevance":"A deterministic model of rating preview and committed value; this isolates one interface invariant without requiring a browser.","root_cause":"The commit preview operation uses `    preview = preview\nelif event == 'escape'` where the contract requires `    preview = None\nelif event == 'escape'`.","sha256":"eab6835deebe7fa63a2f6d6777b0e50c739275518dd4009d63f1bd06f5c65196","title":"Rating preview and committed value: Activation retains an obsolete hover preview · case 01","variant":1,"variant_policy":"Five numbered records share a model and may reuse boundary fixtures.","verified":true,"visibility":"public","verification":{"attempt":{"elapsed_ms":41.481,"exit_code":1,"observations":[{"actual":[2,null],"check":"readonly","expected":[2,null],"passed":true},{"actual":[2,4],"check":"hover","expected":[2,4],"passed":true},{"actual":[2,null],"check":"leave","expected":[2,null],"passed":true},{"actual":[2,2],"check":"locked clear","expected":[2,null],"passed":false},{"actual":[5,5],"check":"change","expected":[5,null],"passed":false},{"actual":[null,null],"check":"clear","expected":[null,null],"passed":true},{"actual":[2,null],"check":"escape","expected":[2,null],"passed":true},{"actual":[0,1],"check":"parameterized rating preview","expected":[0,1],"passed":true},{"actual":[2,null],"check":"repeat escape","expected":[2,null],"passed":true}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"readonly\", \"actual\": [2, null], \"expected\": [2, null], \"passed\": true}, {\"check\": \"hover\", \"actual\": [2, 4], \"expected\": [2, 4], \"passed\": true}, {\"check\": \"leave\", \"actual\": [2, null], \"expected\": [2, null], \"passed\": true}, {\"check\": \"locked clear\", \"actual\": [2, 2], \"expected\": [2, null], \"passed\": false}, {\"check\": \"change\", \"actual\": [5, 5], \"expected\": [5, null], \"passed\": false}, {\"check\": \"clear\", \"actual\": [null, null], \"expected\": [null, null], \"passed\": true}, {\"check\": \"escape\", \"actual\": [2, null], \"expected\": [2, null], \"passed\": true}, {\"check\": \"parameterized rating preview\", \"actual\": [0, 1], \"expected\": [0, 1], \"passed\": true}, {\"check\": \"repeat escape\", \"actual\": [2, null], \"expected\": [2, null], \"passed\": true}], \"passed\": false}\n"},"broken":{"elapsed_ms":39.561,"exit_code":1,"observations":[{"actual":[2,null],"check":"readonly","expected":[2,null],"passed":true},{"actual":[2,4],"check":"hover","expected":[2,4],"passed":true},{"actual":[2,null],"check":"leave","expected":[2,null],"passed":true},{"actual":[2,4],"check":"locked clear","expected":[2,null],"passed":false},{"actual":[5,4],"check":"change","expected":[5,null],"passed":false},{"actual":[null,4],"check":"clear","expected":[null,null],"passed":false},{"actual":[2,null],"check":"escape","expected":[2,null],"passed":true},{"actual":[0,1],"check":"parameterized rating preview","expected":[0,1],"passed":true},{"actual":[2,null],"check":"repeat escape","expected":[2,null],"passed":true}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"readonly\", \"actual\": [2, null], \"expected\": [2, null], \"passed\": true}, {\"check\": \"hover\", \"actual\": [2, 4], \"expected\": [2, 4], \"passed\": true}, {\"check\": \"leave\", \"actual\": [2, null], \"expected\": [2, null], \"passed\": true}, {\"check\": \"locked clear\", \"actual\": [2, 4], \"expected\": [2, null], \"passed\": false}, {\"check\": \"change\", \"actual\": [5, 4], \"expected\": [5, null], \"passed\": false}, {\"check\": \"clear\", \"actual\": [null, 4], \"expected\": [null, null], \"passed\": false}, {\"check\": \"escape\", \"actual\": [2, null], \"expected\": [2, null], \"passed\": true}, {\"check\": \"parameterized rating preview\", \"actual\": [0, 1], \"expected\": [0, 1], \"passed\": true}, {\"check\": \"repeat escape\", \"actual\": [2, null], \"expected\": [2, null], \"passed\": true}], \"passed\": false}\n"}},"member_only":{"stages":["fixed"],"fields":["implementations.fixed","verification.fixed","harness","repair"],"note":"The verified repair, its recorded checks, the repair description, and the scoring harness are available to members."}}