mirror of
https://github.com/Abdess/retroarch_system.git
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Abdessamad Derraz
5e168b86c8
Four sites still compared the verification mode to a literal after the module owning that policy existed. One of them mattered: an unrecognised mode fell through to MD5 verification while compute_severity was scoring it as existence, so a typo in a platform YAML produced a report whose checks and severities described different platforms. The mode is normalized once per run and the consumers ask for what they need. A test reads the sources and fails on a literal comparison, so the next consumer cannot quietly grow a fifth copy.
262 lines
9.7 KiB
Python
262 lines
9.7 KiB
Python
#!/usr/bin/env python3
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"""The native-mode policy verify.py and generate_pack.py must share.
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verify.py and generate_pack.py must reach the same verdict on the same file:
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a pack and a coverage report that disagree describe different collections.
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The rule used to rest on both files spelling out `mode == "existence"` in
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their own words. Routing both through scripts/nativemode.py single-sources
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it, and these tests make the agreement checkable instead of reviewable.
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"""
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from __future__ import annotations
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import json
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import sys
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import unittest
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from pathlib import Path
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REPO_ROOT = Path(__file__).resolve().parent.parent
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sys.path.insert(0, str(REPO_ROOT / "scripts"))
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import nativemode # noqa: E402
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class ModeVocabulary(unittest.TestCase):
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def test_modes_match_the_platform_schema(self):
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"""A mode added to one side and not the other is the bug this catches."""
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schema = json.loads(
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(REPO_ROOT / "schemas" / "platform.schema.json").read_text()
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)
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enum = schema["properties"]["verification_mode"]["enum"]
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self.assertEqual(sorted(nativemode.MODES), sorted(enum))
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def test_schema_default_matches_the_module_default(self):
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schema = json.loads(
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(REPO_ROOT / "schemas" / "platform.schema.json").read_text()
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)
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self.assertEqual(
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schema["properties"]["verification_mode"]["default"],
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nativemode.DEFAULT_MODE,
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)
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def test_unknown_or_missing_mode_falls_back_to_the_default(self):
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for value in (None, "", "sha256", "MD5"):
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self.assertEqual(nativemode.normalize(value), nativemode.DEFAULT_MODE)
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def test_every_declared_platform_mode_is_known(self):
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import yaml
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for path in sorted((REPO_ROOT / "platforms").glob("*.yml")):
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if path.name.startswith("_"):
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continue
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data = yaml.safe_load(path.read_text()) or {}
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mode = data.get("verification_mode")
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if mode is None:
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continue
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self.assertIn(mode, nativemode.MODES, f"{path.name} declares {mode!r}")
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class ContentReadingPolicy(unittest.TestCase):
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def test_existence_reads_nothing(self):
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self.assertFalse(nativemode.reads_file_contents("existence"))
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self.assertIsNone(nativemode.digest_algorithm("existence"))
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def test_digest_modes_read_their_digest(self):
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self.assertEqual(nativemode.digest_algorithm("md5"), "md5")
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self.assertEqual(nativemode.digest_algorithm("sha1"), "sha1")
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self.assertTrue(nativemode.reads_file_contents("md5"))
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self.assertTrue(nativemode.reads_file_contents("sha1"))
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def test_exclusion_follows_content_reading_for_every_mode(self):
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"""The builder omits exactly what the frontend would reject."""
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for mode in nativemode.MODES:
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self.assertEqual(
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nativemode.hash_mismatch_excludes_file(mode),
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nativemode.reads_file_contents(mode),
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f"mode {mode} disagrees with itself",
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)
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class BothConsumersAgree(unittest.TestCase):
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"""verify.py and generate_pack.py must answer the same for every mode."""
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def test_builder_and_verifier_share_one_predicate(self):
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from generate_pack import _intentional_hash_exclusion
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from verify import compute_severity # noqa: F401 (import proves wiring)
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for mode in nativemode.MODES:
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# No entries is never an exclusion, whatever the mode.
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self.assertFalse(_intentional_hash_exclusion([], {}, verification_mode=mode))
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# The builder must refuse to exclude under existence even when asked.
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self.assertFalse(
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_intentional_hash_exclusion(
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[{"name": "x.bin"}], {}, verification_mode="existence"
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)
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)
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def test_severity_uses_the_shared_predicate(self):
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from verify import Severity, Status, compute_severity
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# Existence mode: a missing required file is a warning, not critical.
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self.assertEqual(
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compute_severity(Status.MISSING, True, "existence"),
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Severity.WARNING,
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)
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# Digest mode: the same absence is critical.
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self.assertEqual(
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compute_severity(Status.MISSING, True, "md5"),
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Severity.CRITICAL,
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)
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# An unknown mode must fall back to existence, not to the strictest
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# reading: a typo in a platform YAML should not invent CRITICALs.
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self.assertEqual(
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compute_severity(Status.MISSING, True, "sha256"),
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Severity.WARNING,
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)
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class ThePolicyIsSpeltInOnePlace(unittest.TestCase):
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"""Consumers ask the module; they do not re-spell the rule.
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Four sites still compared the mode to a literal after this module existed,
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and one of them dispatched an unknown mode to MD5 verification while
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compute_severity was scoring it as existence.
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"""
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LITERALS = ('!= "existence"', '== "existence"', 'in ("md5", "sha1")')
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def test_no_consumer_compares_the_mode_to_a_literal(self):
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scripts = Path(__file__).resolve().parent.parent / "scripts"
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offenders = []
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for path in sorted(scripts.glob("*.py")):
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if path.name == "nativemode.py":
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continue
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for number, line in enumerate(path.read_text().splitlines(), 1):
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if any(literal in line for literal in self.LITERALS):
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offenders.append(f"{path.name}:{number}: {line.strip()}")
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self.assertEqual(
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offenders, [],
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"route these through nativemode: " + "; ".join(offenders),
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)
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def test_an_unknown_mode_verifies_the_way_it_is_scored(self):
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"""A typo in a platform YAML must not verify one way and score another."""
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import verify
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self.assertFalse(nativemode.reads_file_contents("sha256"))
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self.assertEqual(
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verify.compute_severity(verify.Status.MISSING, True, "sha256"),
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verify.Severity.WARNING,
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)
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config = {
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"platform": "Typo",
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"verification_mode": "shaa1",
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"systems": {},
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"cores": [],
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}
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result = verify.verify_platform(
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config, {"files": {}, "indexes": {}}, emu_profiles={},
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supplemental_names=set(),
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)
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self.assertEqual(result["verification_mode"], nativemode.DEFAULT_MODE)
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class GapAnalysisAgreesWithTheBuilder(unittest.TestCase):
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""""Available" must mean the pack will carry it.
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find_undeclared_files answered from the name index, so a core extra whose
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local copy contradicts its declared hash counted as held. Under a digest
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mode the builder drops exactly that file, so the coverage report described
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a pack that would not contain it: seven such files across three platforms.
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"""
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def _fixture(self):
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import hashlib
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import tempfile
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tmp = tempfile.TemporaryDirectory()
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root = Path(tmp.name)
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(root / "emulators").mkdir()
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rom = root / "collide.rom"
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rom.write_bytes(b"THE BYTES THE COLLECTION HOLDS")
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sha1 = hashlib.sha1(rom.read_bytes()).hexdigest()
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db = {
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"files": {
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sha1: {
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"path": str(rom),
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"name": "collide.rom",
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"size": rom.stat().st_size,
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"sha1": sha1,
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"md5": hashlib.md5(rom.read_bytes()).hexdigest(),
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"sha256": hashlib.sha256(rom.read_bytes()).hexdigest(),
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"crc32": "00000000",
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}
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},
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"indexes": {
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"by_name": {"collide.rom": [sha1]},
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"by_md5": {hashlib.md5(rom.read_bytes()).hexdigest(): sha1},
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"by_sha256": {},
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"by_crc32": {},
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"by_path_suffix": {},
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},
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}
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(root / "emulators" / "demo.yml").write_text(
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"emulator: demo\n"
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"type: libretro\n"
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"display_name: Demo\n"
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"systems: [demo-system]\n"
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"cores: [demo]\n"
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"files:\n"
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" - name: collide.rom\n"
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" system: demo-system\n"
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" required: true\n"
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" md5: \"" + "f" * 32 + "\"\n"
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)
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return tmp, root, db
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def _in_repo(self, mode: str) -> bool:
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import common
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from verify import find_undeclared_files
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tmp, root, db = self._fixture()
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try:
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common._emulator_profiles_cache.clear()
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profiles = common.load_emulator_profiles(str(root / "emulators"))
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config = {
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"platform": "Demo",
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"verification_mode": mode,
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"cores": ["demo"],
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"systems": {},
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}
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found = find_undeclared_files(
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config, str(root / "emulators"), db, emu_profiles=profiles
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)
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entry = next(e for e in found if e["name"] == "collide.rom")
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return bool(entry["in_repo"])
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finally:
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common._emulator_profiles_cache.clear()
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tmp.cleanup()
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def test_a_digest_mode_does_not_call_a_contradicted_copy_available(self):
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self.assertFalse(
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self._in_repo("md5"),
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"the builder drops this file, so the report must not count it",
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)
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def test_existence_mode_still_counts_it(self):
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"""The frontend never opens the file, so the pack carries it."""
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self.assertTrue(self._in_repo("existence"))
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def test_the_two_modes_answer_the_way_the_shared_predicate_says(self):
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for mode in nativemode.MODES:
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with self.subTest(mode=mode):
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self.assertEqual(
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self._in_repo(mode),
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not nativemode.hash_mismatch_excludes_file(mode),
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)
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if __name__ == "__main__":
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unittest.main()
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