fix(benchmark): classify hunter findings into the taxonomy before scoring arm (b)

The tool hunter's family tag is the model's free text (a live run returned
family:sql-parser and family:readonly-enforcement), so every arm (b) defect
scored family "unknown" and score.catches() could never credit the hunter
even when it landed on the labelled file.

hunter_arm now classifies each finding into the closed taxonomy vocabulary
with the decision-engine classifier (learn.program.classify with
families=FAMILY_IDS minus unknown): a numbered, clamped excerpt around the
finding sets valid_lines, the canonical ANSWER_FORMAT is reused, an off-list
family parses to "none" and lands as "unknown". The benchmark label is never
a fallback. The defect keeps the raw hunter family, title and rationale plus
the classifier's verdict, confidence, rationale, cited lines and parse
failures for audit; the record counts classifier calls and families.
--no-classify keeps the old heuristic path.

14 new offline tests, 67 green with the benchmark tests.

Co-Authored-By: Claude Fable 5.1 <[email protected]>
This commit is contained in:
Marius Ciepluch
2026-10-12 20:42:08 +02:00
co-authored by Claude Fable 5.1
parent 9f7ca132ff
commit d37d9634c6
2 changed files with 306 additions and 17 deletions
+194 -1
View File
@@ -13,7 +13,10 @@ import pytest
from openultrasast import tool_hunter
from openultrasast.complexity.map import Hotspot
from openultrasast.config import load_config
from openultrasast.learn import program
from openultrasast.learn.program import ANSWER_FORMAT, PARSE_FAILED, Caller, Decision, aggregate
from openultrasast.model.endpoint import resolve_models
from openultrasast.model.taxonomy import FAMILY_IDS, load_families
sys.path.insert(0, str(Path(__file__).resolve().parents[1]))
hunter_arm = importlib.import_module("benchmarks.valid.hunter_arm")
@@ -31,6 +34,7 @@ def offline(monkeypatch):
for name in ("GIT_DIR", "GIT_WORK_TREE", "GIT_INDEX_FILE", "GIT_OBJECT_DIRECTORY", "GIT_ALTERNATE_OBJECT_DIRECTORIES"):
monkeypatch.delenv(name, raising=False)
monkeypatch.setattr(tool_hunter, "resolve_hunter_client", lambda: tool_hunter.scripted_hunter_client())
monkeypatch.setattr(hunter_arm, "classify", lambda *args, **kwargs: decision("injection"))
@pytest.fixture
@@ -95,6 +99,29 @@ def record_path(out, item_id):
return out / (hashlib.sha256(item_id.encode()).hexdigest() + ".json")
def decision(family):
return Decision("vulnerable", family, 0.9, {"vulnerable": 1}, "Protected operation has no guard at line 2", (2,), 0, ())
def raw_finding(*, line=2):
(finding,) = tool_hunter._findings_from_content(
Path("/tmp"),
[],
json.dumps(
[
{
"path": "app.py",
"line": line,
"title": "Read-only mode bypass",
"rationale": "A protected write is allowed",
"family": "sql-parser",
}
]
),
)
return finding
def test_positive_is_scoreable_and_checkout_is_removed(fixture, monkeypatch, capsys):
git, change, manifest, repos, out = fixture
client = flagged_client()
@@ -103,7 +130,7 @@ def test_positive_is_scoreable_and_checkout_is_removed(fixture, monkeypatch, cap
(row,) = score.load_records(out)
(defect,) = row["push"]["admission"]["defects"]
assert score.catches(row) == ["alerts"]
assert defect["family"] == "injection" and defect["cwe"] == "CWE-89"
assert defect["family"] == "injection" and defect["cwe"] == "CWE-77"
assert defect["locations"] == [["app.py", 2]] and defect["function"] == "search"
assert defect["source"] == "hunter"
assert row["status"] == "hunter_covered" and row["done"]
@@ -223,6 +250,172 @@ def test_classification_does_not_borrow_change_label(fixture):
assert unknown["family"] == "unknown" and unknown["cwe"] is None
def test_free_text_family_is_classified_and_scoreable(fixture, monkeypatch):
_, change, manifest, repos, out = fixture
change["family"] = "access_control"
change["cwe"] = "CWE-284"
monkeypatch.setattr(hunter_arm, "load_slice", lambda *args: [change])
finding = raw_finding()
monkeypatch.setattr(tool_hunter, "run_tool_hunter", lambda *args, **kwargs: [finding, replace(finding, finding_id="second")])
client = tool_hunter.scripted_hunter_client()
monkeypatch.setattr(tool_hunter, "resolve_hunter_client", lambda: client)
prompts = []
def classify(prompt, caller, k, *, families):
assert isinstance(caller, Caller) and caller.client is client
assert caller.model == resolve_models(load_config(dotenv=False))[0]
assert k == 1 and tuple(families) == tuple(f for f in FAMILY_IDS if f != "unknown")
assert prompt.example_ids == prompt.demo_ids == ()
assert prompt.valid_lines == frozenset({1, 2})
system, user = prompt.messages
assert system["role"] == "system" and user["role"] == "user"
content = user["content"]
for family in families:
assert load_families().by_id(family).description in content
assert "sql-parser" in content and finding.title in content and finding.rationale in content
assert "app.py:2" in content and "1 def search(q):" in content and "2 return db.execute" in content
assert content.endswith(ANSWER_FORMAT)
assert change["id"] not in content and change["cwe"] not in content
prompts.append(prompt)
return decision("access_control")
monkeypatch.setattr(hunter_arm, "classify", classify)
assert hunter_arm.main(["run", str(manifest), "--repos", str(repos), "--out", str(out)]) == 0
(row,) = score.load_records(out)
assert score.catches(row) == ["alerts"]
assert len(prompts) == 2
assert row["classifier"] == {"calls": 2, "parse_failed": 0, "families": {"access_control": 2}}
for defect in row["push"]["admission"]["defects"]:
assert defect["family"] == "access_control" and defect["cwe"] == "CWE-284"
assert defect["hunter_family"] == "sql-parser" and defect["title"] == finding.title
assert defect["rationale"] == finding.rationale
assert defect["classifier"] == {
"family": "access_control",
"verdict": "vulnerable",
"confidence": 0.9,
"rationale": decision("access_control").rationale,
"cited_lines": [2],
"parse_failed": 0,
}
@pytest.mark.parametrize("result", [decision("none"), aggregate([PARSE_FAILED])])
def test_classifier_abstention_is_unknown_and_done(fixture, monkeypatch, result):
_, _, manifest, repos, out = fixture
monkeypatch.setattr(tool_hunter, "run_tool_hunter", lambda *args, **kwargs: [raw_finding()])
monkeypatch.setattr(hunter_arm, "classify", lambda *args, **kwargs: result)
assert hunter_arm.main(["run", str(manifest), "--repos", str(repos), "--out", str(out)]) == 0
(row,) = score.load_records(out)
(defect,) = row["push"]["admission"]["defects"]
assert defect["family"] == "unknown" and defect["cwe"] is None
assert defect["classifier"]["parse_failed"] == result.parse_failed
assert row["classifier"] == {"calls": 1, "parse_failed": result.parse_failed, "families": {"unknown": 1}}
assert row["done"] and row["status"] == "hunter_covered"
assert score.coverage(row) != "instrument_failure" and score.catches(row) == []
def test_classifier_exception_is_a_scoreable_miss(fixture, monkeypatch):
_, _, manifest, repos, out = fixture
monkeypatch.setattr(tool_hunter, "run_tool_hunter", lambda *args, **kwargs: [raw_finding()])
def classify(*args, **kwargs):
raise RuntimeError("private model key must not be logged")
monkeypatch.setattr(hunter_arm, "classify", classify)
assert hunter_arm.main(["run", str(manifest), "--repos", str(repos), "--out", str(out)]) == 0
(row,) = score.load_records(out)
(defect,) = row["push"]["admission"]["defects"]
assert defect["family"] == "unknown" and defect["classifier"]["error"] == "RuntimeError"
assert row["done"] and row["status"] == "hunter_covered"
assert score.coverage(row) != "instrument_failure" and score.catches(row) == []
assert row["classifier"] == {"calls": 1, "parse_failed": 0, "families": {"unknown": 1}}
assert "private model key" not in json.dumps(row)
def test_no_classify_retains_heuristic_and_audit(fixture, monkeypatch):
_, _, manifest, repos, out = fixture
finding = replace(raw_finding(), title="SQL injection (CWE-89)")
monkeypatch.setattr(tool_hunter, "run_tool_hunter", lambda *args, **kwargs: [finding])
def forbidden(*args, **kwargs):
pytest.fail("classifier called with --no-classify")
monkeypatch.setattr(hunter_arm, "classify", forbidden)
assert hunter_arm.main(["run", str(manifest), "--repos", str(repos), "--out", str(out), "--no-classify"]) == 0
(row,) = score.load_records(out)
(defect,) = row["push"]["admission"]["defects"]
assert defect["family"] == "injection" and defect["cwe"] == "CWE-89"
assert score.catches(row) == ["alerts"]
assert defect["hunter_family"] == "sql-parser" and defect["title"] == finding.title
assert defect["rationale"] == finding.rationale and defect["classifier"] is None
assert row["classifier"] == {"calls": 0, "parse_failed": 0, "families": {"injection": 1}}
@pytest.mark.parametrize("line, expected", [(1, range(1, 22)), (30, range(10, 51)), (60, range(40, 61))])
def test_classify_family_excerpt_is_numbered_and_clamped(tmp_path, monkeypatch, line, expected, capsys):
text = "".join(f"source_{n}\n" for n in range(1, 61))
(tmp_path / "app.py").write_text(text)
def classify(prompt, caller, k, *, families):
assert prompt.valid_lines == frozenset(expected)
content = prompt.messages[1]["content"]
for n in expected:
assert f"{n} source_{n}\n" in content
return decision("access_control")
monkeypatch.setattr(hunter_arm, "classify", classify)
result = hunter_arm.classify_family(raw_finding(line=line), tmp_path, caller=Caller(None, "offline"), families=("access_control",))
assert result["family"] == "access_control"
assert f"{len(text.encode())} bytes read" in capsys.readouterr().out
@pytest.mark.parametrize("failure", ["empty", "unreadable", "out_of_range"])
def test_missing_excerpt_is_unknown_without_classifying(fixture, monkeypatch, failure):
_, _, manifest, repos, out = fixture
def hunter(root, *args, **kwargs):
if failure == "empty":
(root / "app.py").write_text("")
if failure == "unreadable":
(root / "app.py").unlink()
return [raw_finding(line=200 if failure == "out_of_range" else 2)]
def forbidden(*args, **kwargs):
pytest.fail("classifier called without a readable excerpt")
monkeypatch.setattr(tool_hunter, "run_tool_hunter", hunter)
monkeypatch.setattr(hunter_arm, "classify", forbidden)
assert hunter_arm.main(["run", str(manifest), "--repos", str(repos), "--out", str(out)]) == 0
(row,) = score.load_records(out)
(defect,) = row["push"]["admission"]["defects"]
assert defect["family"] == "unknown"
assert defect["classifier"]["error"] == ("input_error:FileNotFoundError" if failure == "unreadable" else "empty_excerpt")
assert row["classifier"] == {"calls": 0, "parse_failed": 0, "families": {"unknown": 1}}
assert row["done"] and row["status"] == "hunter_covered" and score.catches(row) == []
@pytest.mark.parametrize("failure", ["off_list", "bad_citation", "retry_success"])
def test_classify_family_reuses_parser_and_retry(tmp_path, monkeypatch, failure):
(tmp_path / "app.py").write_text("def search(q):\n write(q)\n")
good = {
"verdict": "vulnerable",
"family": "access_control",
"confidence": 0.9,
"rationale": "Missing guard at line 2",
"cited_lines": [2],
}
bad = {**good, "family": "sql-parser"} if failure == "off_list" else {**good, "cited_lines": [1000]}
contents = [bad] if failure == "off_list" else [bad, good if failure == "retry_success" else bad]
client = tool_hunter.ScriptedChatClient([tool_hunter.ChatResponse(content=json.dumps(answer)) for answer in contents])
monkeypatch.setattr(hunter_arm, "classify", program.classify)
result = hunter_arm.classify_family(
raw_finding(), tmp_path, caller=Caller(client, "offline"), families=tuple(f for f in FAMILY_IDS if f != "unknown")
)
assert len(client.calls) == len(contents)
assert result["family"] == ("access_control" if failure == "retry_success" else "unknown")
assert result["parse_failed"] == (1 if failure == "bad_citation" else 0)
def write_arm(out, entries, records):
out.mkdir()
(out / "inputs.json").write_text(json.dumps(entries))