{"abstract":"Namespace prefixes are treated as part of element identity.","category":"Markup","checks":4,"contract":"Return root element local name after expanded namespace resolution.","evaluation_group":"model-6b00747215a27a61","failed_approach":"The attempted repair handles the primary example but still violates a separate boundary of the same contract.","family":"xp-xml-namespace-local","id":"FA-3236","implementations":{"attempt":{"sha256":"4bbbf4d77f4d3ec5cd0a576afb0f4d5612e35d3bd69109c6420d92a23317c522","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\nimport re, unicodedata, json, csv, io, html, base64, binascii, codecs, struct\nfrom urllib.parse import quote, unquote, unquote_to_bytes, urlencode, parse_qsl, urlsplit, urlunsplit\nfrom email.header import decode_header, make_header\nfrom email.utils import getaddresses\nfrom xml.etree import ElementTree as ET\nimport shlex, string, textwrap\n\nN = 1\nobservations = []\ndef solve(x):\n    try:\n        return ET.fromstring(x).tag.split(':')[-1]\n    except Exception as exc:\n        return {\"error\": type(exc).__name__}\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\ncheck('boundary 1', solve('<a:x xmlns:a=\"urn:test\"/>'), 'x')\ncheck('boundary 2', solve('<x xmlns=\"urn:test\"/>'), 'x')\ncheck('boundary 3', solve('<plain/>'), 'plain')\ncheck('boundary 4', solve('<a:b xmlns:a=\"urn:other\"/>'), 'b')\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":"e204fccd7ea160157c461b7e0d572c9da0f4e37141b4242417eba0c735a15310","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\nimport re, unicodedata, json, csv, io, html, base64, binascii, codecs, struct\nfrom urllib.parse import quote, unquote, unquote_to_bytes, urlencode, parse_qsl, urlsplit, urlunsplit\nfrom email.header import decode_header, make_header\nfrom email.utils import getaddresses\nfrom xml.etree import ElementTree as ET\nimport shlex, string, textwrap\n\nN = 1\nobservations = []\ndef solve(x):\n    try:\n        return ET.fromstring(x).tag\n    except Exception as exc:\n        return {\"error\": type(exc).__name__}\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\ncheck('boundary 1', solve('<a:x xmlns:a=\"urn:test\"/>'), 'x')\ncheck('boundary 2', solve('<x xmlns=\"urn:test\"/>'), 'x')\ncheck('boundary 3', solve('<plain/>'), 'plain')\ncheck('boundary 4', solve('<a:b xmlns:a=\"urn:other\"/>'), 'b')\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"},"fixed":{"sha256":"ce6198ba1ab4d2e567fe606bb7c4988525dfd4e007b8bf73ae8e8f9b615b0161","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\nimport re, unicodedata, json, csv, io, html, base64, binascii, codecs, struct\nfrom urllib.parse import quote, unquote, unquote_to_bytes, urlencode, parse_qsl, urlsplit, urlunsplit\nfrom email.header import decode_header, make_header\nfrom email.utils import getaddresses\nfrom xml.etree import ElementTree as ET\nimport shlex, string, textwrap\n\nN = 1\nobservations = []\ndef solve(x):\n    try:\n        return ET.fromstring(x).tag.rsplit('}',1)[-1]\n    except Exception as exc:\n        return {\"error\": type(exc).__name__}\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\ncheck('boundary 1', solve('<a:x xmlns:a=\"urn:test\"/>'), 'x')\ncheck('boundary 2', solve('<x xmlns=\"urn:test\"/>'), 'x')\ncheck('boundary 3', solve('<plain/>'), 'plain')\ncheck('boundary 4', solve('<a:b xmlns:a=\"urn:other\"/>'), 'b')\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":"xp-xml-namespace-local","generated_at":"2026-09-29T14:37:23.193249+00:00","license":"CC0-1.0","python":"3.12.14","seed":1,"split":"open-access"},"relevance":"A local executable model for consumers of structured text; oracle values are authored literals, not outputs copied from the repaired implementation.","repair":"Implement the complete stated contract, including the boundary fixtures: Return root element local name after expanded namespace resolution.","root_cause":"The implementation applies an operation whose text or grammar semantics violate this contract: Return root element local name after expanded namespace resolution.","sha256":"94032fd18cb14543a355222a32c104bcf91553b1371c5f04b8e48c5e0b956f4e","title":"Namespace prefixes are treated as part of element identity · case 01","variant":1,"variant_policy":"Five numbered records share a model and may reuse boundary fixtures.","verification":{"attempt":{"elapsed_ms":57.305,"exit_code":1,"observations":[{"actual":"test}x","check":"boundary 1","expected":"x","passed":false},{"actual":"test}x","check":"boundary 2","expected":"x","passed":false},{"actual":"plain","check":"boundary 3","expected":"plain","passed":true},{"actual":"other}b","check":"boundary 4","expected":"b","passed":false}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"boundary 1\", \"actual\": \"test}x\", \"expected\": \"x\", \"passed\": false}, {\"check\": \"boundary 2\", \"actual\": \"test}x\", \"expected\": \"x\", \"passed\": false}, {\"check\": \"boundary 3\", \"actual\": \"plain\", \"expected\": \"plain\", \"passed\": true}, {\"check\": \"boundary 4\", \"actual\": \"other}b\", \"expected\": \"b\", \"passed\": false}], \"passed\": false}\n"},"broken":{"elapsed_ms":60.883,"exit_code":1,"observations":[{"actual":"{urn:test}x","check":"boundary 1","expected":"x","passed":false},{"actual":"{urn:test}x","check":"boundary 2","expected":"x","passed":false},{"actual":"plain","check":"boundary 3","expected":"plain","passed":true},{"actual":"{urn:other}b","check":"boundary 4","expected":"b","passed":false}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"boundary 1\", \"actual\": \"{urn:test}x\", \"expected\": \"x\", \"passed\": false}, {\"check\": \"boundary 2\", \"actual\": \"{urn:test}x\", \"expected\": \"x\", \"passed\": false}, {\"check\": \"boundary 3\", \"actual\": \"plain\", \"expected\": \"plain\", \"passed\": true}, {\"check\": \"boundary 4\", \"actual\": \"{urn:other}b\", \"expected\": \"b\", \"passed\": false}], \"passed\": false}\n"},"fixed":{"elapsed_ms":55.934,"exit_code":0,"observations":[{"actual":"x","check":"boundary 1","expected":"x","passed":true},{"actual":"x","check":"boundary 2","expected":"x","passed":true},{"actual":"plain","check":"boundary 3","expected":"plain","passed":true},{"actual":"b","check":"boundary 4","expected":"b","passed":true}],"passed":true,"stderr":"","stdout":"{\"observations\": [{\"check\": \"boundary 1\", \"actual\": \"x\", \"expected\": \"x\", \"passed\": true}, {\"check\": \"boundary 2\", \"actual\": \"x\", \"expected\": \"x\", \"passed\": true}, {\"check\": \"boundary 3\", \"actual\": \"plain\", \"expected\": \"plain\", \"passed\": true}, {\"check\": \"boundary 4\", \"actual\": \"b\", \"expected\": \"b\", \"passed\": true}], \"passed\": true}\n"}},"verified":true,"visibility":"public"}