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Open_Ultra_SAST/tests/test_model_calibrate.py
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Marius CiepluchandClaude Opus 5 fe45081b43 fix(ci): run ruff format, and record run 5 at 90% pair-correct
CI was red on `ruff format --check`: 23 files. I ran `ruff check` after every
change this session and never once ran `ruff format --check`, though CI runs
both. Lint passing is not formatting passing, and I treated one as evidence for
the other for the whole session.

Formatting applied. The full CI sequence now reproduces locally: format, lint,
mypy over 94 files, 735 tests, three gates byte-identical, compileall, and the
semantic job's 16 marked tests.

Also records run 5 of the pipeline measurement, which the vampi fix lifted as
predicted:

                       hunter (K=5)   pipeline (K=1)
  pair-correct              76.7%          90.0%
  leak                      12.3%           6.7%
  detection                    --          96.7%
  cost                     ~$0.69        $0.0068

27 of 30 pairs. Five runs, each step from a measurement contradicting an
assumption: 73.3 (no pipeline path) -> 73.3 (routing fixed, IDENTICAL, which
exposed the discarded verdict) -> 80.0 (residual question matched to its
arbiter) -> 86.7 (aiohttp settings) -> 90.0 (dominance question no longer
contradicting its own evidence).

One miss left: dsvpwa-dsvpwa-main, whose setting is an argparse --ssl default
rather than a security-setting call. Out of reach before the settings work and
still is; contorting the arbiter around one pair would be worse than the miss.

The caveat is recorded beside the number: 30 pairs of one slice, and the slice
iterated against all session. The +16% overfitting gap against vfc-js is why
contributor-scan Req 8.1/8.2 exist.

Co-Authored-By: Claude Opus 5 (1M context) <[email protected]>
Claude-Session: https://claude.ai/code/session_01T7XD7x5KonMdmGRkp63EQG
2026-09-08 19:46:58 +02:00

98 lines
4.3 KiB
Python

"""model-grounded-detection task 5.1: the corpus calibrates the MODEL, not an LLM vote (Req 9).
The inversion this feature rests on. Previously a pair the detector missed was a detector failure to be
averaged away over K runs. Here a pair the model cannot split is a *named gap in the model*, with the reason
recorded, because the model is deterministic: it will miss that pair the same way every time, and the only
thing that changes it is better modelling.
`covered` therefore means the model reached a strictly higher rung on the vulnerable side than on its fix --
not that it flagged something. Flagging both sides equally distinguishes nothing.
"""
from __future__ import annotations
def _outcome(name, family="injection", slice_name="vibe-py", vuln="model_entailed", fixed="none", reason=""): # type: ignore[no-untyped-def]
from openultrasast.model.calibrate import PairOutcome
return PairOutcome(pair=name, family=family, slice=slice_name, vuln_rung=vuln, fixed_rung=fixed, reason=reason)
def test_a_pair_the_model_splits_is_covered() -> None:
from openultrasast.model.calibrate import calibrate
report = calibrate([_outcome("a")])
assert report.covered == ("a",)
assert report.gaps == ()
def test_a_pair_the_model_cannot_split_is_a_named_gap_not_a_miss() -> None:
"""Req 9.2: the reason travels with the gap, because a deterministic model fails the same way every time."""
from openultrasast.model.calibrate import calibrate
report = calibrate([_outcome("b", vuln="none", fixed="none", reason="sink_not_in_table")])
assert report.gaps and report.gaps[0].pair == "b"
assert report.gaps[0].reason == "sink_not_in_table"
assert report.covered == ()
def test_flagging_both_sides_equally_is_a_gap_not_a_success() -> None:
"""The model saw something on the fix too, so it distinguished nothing — that is the whole metric."""
from openultrasast.model.calibrate import calibrate
report = calibrate([_outcome("c", vuln="model_entailed", fixed="model_entailed")])
assert report.covered == ()
assert report.gaps[0].reason, "an unsplit pair must carry a reason even when none was supplied"
def test_gaps_are_grouped_by_family_with_their_reasons() -> None:
from openultrasast.model.calibrate import calibrate
report = calibrate(
[
_outcome("a", family="path", vuln="none", reason="sink_not_in_table"),
_outcome("b", family="path", vuln="none", reason="sink_not_in_table"),
_outcome("c", family="injection", vuln="none", reason="source_unmodelled"),
_outcome("d", family="injection"),
]
)
by_family = report.gaps_by_family()
assert set(by_family) == {"path", "injection"}
assert by_family["path"]["pairs"] == 2
assert by_family["path"]["reasons"] == {"sink_not_in_table": 2}
assert by_family["injection"]["pairs"] == 1
def test_the_report_is_per_slice_and_names_the_deciding_one() -> None:
"""Req 9.3/11.1: the real-world slice decides; a development slice must not stand in for the corpus."""
from openultrasast.model.calibrate import calibrate
report = calibrate(
[
_outcome("a", slice_name="vibe-py"),
_outcome("b", slice_name="vfc-js", vuln="none", reason="sink_not_in_table"),
]
)
assert set(report.per_slice) == {"vibe-py", "vfc-js"}
assert report.per_slice["vibe-py"]["covered"] == 1
assert report.per_slice["vfc-js"]["gaps"] == 1
def test_the_report_refuses_a_bare_aggregate() -> None:
from openultrasast.model.calibrate import calibrate
text = calibrate([_outcome("a"), _outcome("b", slice_name="vfc-js", vuln="none")]).to_markdown()
assert "vibe-py" in text and "vfc-js" in text, "no headline without its per-slice rows"
assert "coverage" in text.lower()
def test_a_cve_recipe_yields_the_parent_and_fix_commits() -> None:
"""Req 9.4: the harvest seam. The fix diff is the oracle; nothing is hand-labelled."""
from openultrasast.model.calibrate import harvest_recipe
recipe = harvest_recipe({"repo": "org/proj", "fix_commit": "abc123", "relpath": "app.py", "function": "run"})
assert recipe.repo == "org/proj"
assert recipe.fix_commit == "abc123"
assert recipe.parent_ref == "abc123^", "the vulnerable side is the fix commit's parent, by construction"
assert recipe.relpath == "app.py" and recipe.function == "run"