IQ.Pilot Release Commit @ f2a861c

artifacts/package_sources/panda/tests/misra/test_mutation.py

@@ -0,0 +1,78 @@
+#!/usr/bin/env python3
+import os
+import glob
+import pytest
+import shutil
+import subprocess
+import tempfile
+import random
+
+HERE = os.path.abspath(os.path.dirname(__file__))
+ROOT = os.path.join(HERE, "../../")
+
+IGNORED_PATHS = (
+  'board/obj',
+  'board/jungle',
+  'board/body',
+  'board/stm32h7/inc',
+  'board/fake_stm.h',
+
+  # bootstub only files
+  'board/flasher.h',
+  'board/bootstub.c',
+  'board/bootstub_declarations.h',
+  'board/stm32h7/llflash.h',
+)
+
+mutations = [
+  (None, None, False),  # no mods, should pass
+  ("board/stm32h7/llfdcan.h", "s/return ret;/if (true) { return ret; } else { return false; }/g", True),
+]
+
+patterns = [
+  # misra-c2012-13.3
+  "$a void test(int tmp) { int tmp2 = tmp++ + 2; if (tmp2) {;}}",
+  # misra-c2012-13.4
+  "$a int test(int x, int y) { return (x=2) && (y=2); }",
+  # misra-c2012-13.5
+  "$a void test(int tmp) { if (true && tmp++) {;} }",
+  # misra-c2012-13.6
+  "$a void test(int tmp) { if (sizeof(tmp++)) {;} }",
+  # misra-c2012-14.1
+  "$a void test(float len) { for (float j = 0; j < len; j++) {;} }",
+  # misra-c2012-14.4
+  "$a void test(int len) { if (len - 8) {;} }",
+  # misra-c2012-16.4
+  r"$a void test(int temp) {switch (temp) { case 1: ; }}\n",
+  # misra-c2012-17.8
+  "$a void test(int cnt) { for (cnt=0;;cnt++) {;} }",
+  # misra-c2012-20.4
+  r"$a #define auto 1\n",
+  # misra-c2012-20.5
+  r"$a #define TEST 1\n#undef TEST\n",
+]
+
+all_files = glob.glob('board/**', root_dir=ROOT, recursive=True)
+files = [f for f in all_files if f.endswith(('.c', '.h')) and not f.startswith(IGNORED_PATHS)]
+assert len(files) > 50, all(d in files for d in ('board/main.c', 'board/stm32h7/llfdcan.h'))
+
+for p in patterns:
+  mutations.append((random.choice(files), p, True))
+
+# TODO: remove sampling once test_misra.sh is faster
+mutations = random.sample(mutations, 2)
+
+@pytest.mark.parametrize("fn, patch, should_fail", mutations)
+def test_misra_mutation(fn, patch, should_fail):
+  with tempfile.TemporaryDirectory() as tmp:
+    shutil.copytree(ROOT, tmp + "/panda", dirs_exist_ok=True)
+
+    # apply patch
+    if fn is not None:
+      r = os.system(f"cd {tmp}/panda && sed -i '{patch}' {fn}")
+      assert r == 0
+
+    # run test
+    r = subprocess.run("SKIP_TABLES_DIFF=1 panda/tests/misra/test_misra.sh", cwd=tmp, shell=True)
+    failed = r.returncode != 0
+    assert failed == should_fail