67 lines
2.5 KiB
Python
67 lines
2.5 KiB
Python
#!/usr/bin/env python3
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import os
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import glob
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import pytest
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import shutil
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import subprocess
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import tempfile
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import random
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HERE = os.path.abspath(os.path.dirname(__file__))
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ROOT = os.path.join(HERE, "../../../../")
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IGNORED_PATHS = (
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'opendbc/safety/main.c',
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'opendbc/safety/tests/',
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'opendbc/safety/board/',
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)
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mutations = [
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# no mutation, should pass
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(None, None, lambda s: s, False),
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]
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patterns = [
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("misra-c2012-10.3", lambda s: s + "\nvoid test(float len) { for (float j = 0; j < len; j++) {;} }\n"),
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("misra-c2012-13.3", lambda s: s + "\nvoid test(int tmp) { int tmp2 = tmp++ + 2; if (tmp2) {;}}\n"),
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("misra-c2012-13.4", lambda s: s + "\nint test(int x, int y) { return (x=2) && (y=2); }\n"),
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("misra-c2012-13.5", lambda s: s + "\nvoid test(int tmp) { if (true && tmp++) {;} }\n"),
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("misra-c2012-13.6", lambda s: s + "\nvoid test(int tmp) { if (sizeof(tmp++)) {;} }\n"),
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("misra-c2012-14.2", lambda s: s + "\nvoid test(int cnt) { for (cnt=0;;cnt++) {;} }\n"),
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("misra-c2012-14.4", lambda s: s + "\nvoid test(int len) { if (len - 8) {;} }\n"),
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("misra-c2012-16.4", lambda s: s + "\nvoid test(int temp) {switch (temp) { case 1: ; }}\n"),
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("misra-c2012-20.4", lambda s: s + "\n#define auto 1\n"),
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("misra-c2012-20.5", lambda s: s + "\n#define TEST 1\n#undef TEST\n"),
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]
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all_files = glob.glob('opendbc/safety/**', root_dir=ROOT, recursive=True)
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files = [f for f in all_files if f.endswith(('.c', '.h')) and not f.startswith(IGNORED_PATHS)]
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assert len(files) > 20, files
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for p in patterns:
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mutations.append((random.choice(files), *p, True))
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mutations = random.sample(mutations, 2) # can remove this once cppcheck is faster
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@pytest.mark.parametrize("fn, rule, transform, should_fail", mutations)
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def test_misra_mutation(fn, rule, transform, should_fail):
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with tempfile.TemporaryDirectory() as tmp:
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shutil.copytree(ROOT, tmp, dirs_exist_ok=True,
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ignore=shutil.ignore_patterns('.venv', 'cppcheck', '.git', '*.ctu-info', '.hypothesis'))
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# apply patch
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if fn is not None:
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with open(os.path.join(tmp, fn), 'r+') as f:
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content = f.read()
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f.seek(0)
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f.write(transform(content))
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# run test
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r = subprocess.run(f"OPENDBC_ROOT={tmp} opendbc/safety/tests/misra/test_misra.sh",
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stdout=subprocess.PIPE, cwd=ROOT, shell=True, encoding='utf8')
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print(r.stdout) # helpful for debugging failures
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failed = r.returncode != 0
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assert failed == should_fail
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if should_fail:
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assert rule in r.stdout, "MISRA test failed but not for the correct violation" |