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#!/usr/bin/env python3
"""Tests for the wall-contract registry and runner (``harness/contracts.py``).
The fast contracts execute the proven offline entry points (valprobe matrix,
GMMU golden vector, launch audit, rehost demo, RM-capture demo) and are
asserted to pass; prerequisites that are genuinely absent are reported as
skips, never as passes. No hardware, no module, no guest, no network.
Run::
python3 -m unittest tests.test_contracts -v
"""
from __future__ import annotations
import contextlib
import importlib
import io
import json
import os
import sys
import tempfile
import unittest
HERE = os.path.dirname(os.path.abspath(__file__))
TOOL_ROOT = os.path.abspath(os.path.join(HERE, ".."))
if TOOL_ROOT not in sys.path:
sys.path.insert(0, TOOL_ROOT)
from harness import run_contracts as runner # noqa: E402
from harness.contracts import ( # noqa: E402
FAST,
SLOW,
WALL_CLASSES,
Contract,
ContractSkip,
all_contracts,
fast_contracts,
run_contracts,
summarize,
)
MISSING_PATH = os.path.join(TOOL_ROOT, "contract-test-missing-prerequisite")
def _entry_target(entry: str) -> tuple[str, str]:
module, _, rest = entry.partition(":")
return module, rest.split("(", 1)[0].strip()
def _raise(exc: Exception):
def _run():
raise exc
return _run
def _fake(name: str, **overrides) -> Contract:
fields = {
"name": name,
"wall_class": "a",
"doc": "docs/50",
"entry": "tests:fake",
"speed": FAST,
"expect": "test expectation",
"run": lambda: {"ok": True},
"check": lambda report: (report.get("ok") is True, "ok"),
"requires": (),
}
fields.update(overrides)
return Contract(**fields)
def _run_main(argv: list[str]) -> tuple[int, str, str]:
out, err = io.StringIO(), io.StringIO()
with contextlib.redirect_stdout(out), contextlib.redirect_stderr(err):
try:
rc = runner.main(argv)
except SystemExit as exc:
rc = int(exc.code or 0)
return rc, out.getvalue(), err.getvalue()
class RegistryShapeTests(unittest.TestCase):
def test_registry_shape(self):
contracts = all_contracts()
names = [contract.name for contract in contracts]
self.assertEqual(len(names), len(set(names)), "contract names must be unique")
self.assertGreaterEqual(len(contracts), 3, "keep at least the proven contracts")
for contract in contracts:
with self.subTest(contract=contract.name):
self.assertIn(contract.wall_class, WALL_CLASSES)
self.assertIn(contract.speed, (FAST, SLOW))
self.assertTrue(contract.doc.startswith("docs/"))
self.assertTrue(contract.entry)
self.assertTrue(contract.expect)
self.assertTrue(fast_contracts(), "registry must have fast contracts")
def test_entries_resolve_to_real_callables(self):
for contract in all_contracts():
with self.subTest(contract=contract.name):
module_name, func_name = _entry_target(contract.entry)
module = importlib.import_module(module_name)
self.assertTrue(callable(getattr(module, func_name, None)), contract.entry)
class RunnerSemanticsTests(unittest.TestCase):
def test_classifies_pass_fail_skip(self):
results = run_contracts(
[
_fake("good"),
_fake("raising", run=_raise(RuntimeError("boom"))),
_fake("missing-prereq", requires=(MISSING_PATH,)),
_fake("declared-skip", run=_raise(ContractSkip("not applicable here"))),
_fake("failed-check", check=lambda report: (False, "checker rejected")),
]
)
by_name = {result.name: result for result in results}
self.assertEqual(by_name["good"].status, "pass")
self.assertEqual(by_name["missing-prereq"].status, "skip")
self.assertEqual(by_name["declared-skip"].status, "skip")
self.assertEqual(by_name["raising"].status, "fail")
self.assertIn("boom", by_name["raising"].detail)
self.assertEqual(by_name["failed-check"].status, "fail")
summary = summarize(results)
self.assertFalse(summary["ok"])
self.assertEqual(summary["counts"], {"pass": 1, "fail": 2, "skip": 2})
domains = {domain["wall_class"]: domain for domain in summary["domains"]}
self.assertEqual(set(domains), set(WALL_CLASSES))
self.assertEqual(domains["a"]["total"], 5)
self.assertEqual(domains["d"]["total"], 0)
def test_fast_contracts_pass(self):
contracts = fast_contracts()
self.assertGreaterEqual(len(contracts), 3)
results = run_contracts(contracts)
for result in results:
with self.subTest(contract=result.name):
self.assertNotEqual(result.status, "fail", result.detail)
if result.status == "skip":
self.skipTest(result.detail)
self.assertTrue(any(result.status == "pass" for result in results))
class RunnerCliTests(unittest.TestCase):
def test_single_contract_json_summary(self):
with tempfile.TemporaryDirectory() as tmp:
path = os.path.join(tmp, "contracts.json")
rc, out, err = _run_main(
["--fast", "--name", "gmmu-golden-vector", "--json", path]
)
self.assertEqual(rc, 0, err)
self.assertIn("PASS", out)
with open(path, "r", encoding="utf-8") as fh:
summary = json.load(fh)
self.assertTrue(summary["ok"])
self.assertEqual(summary["counts"]["pass"], 1)
self.assertEqual(
[contract["name"] for contract in summary["contracts"]],
["gmmu-golden-vector"],
)
self.assertEqual(len(summary["domains"]), len(WALL_CLASSES))
def test_unknown_contract_name_is_usage_error(self):
rc, _out, err = _run_main(["--fast", "--name", "no-such-contract"])
self.assertEqual(rc, 2)
self.assertIn("unknown contract", err)
if __name__ == "__main__":
unittest.main()
|
