test/cli/fuzz_test.py: added test for timeouts (#6011)

test/cli/fuzz_test.py

@@ -1,4 +1,6 @@
 import os
+import subprocess
+
 from testutils import cppcheck
 
 __script_dir = os.path.dirname(os.path.abspath(__file__))
@@ -14,3 +16,19 @@ def test_fuzz_crash():
             failures[f] = stdout
 
     assert failures == {}
+
+
+def test_fuzz_timeout():
+    failures = []
+
+    fuzz_timeout_dir = os.path.join(__script_dir, 'fuzz-timeout')
+    # TODO: remove check if we have test data
+    if not os.path.exists(fuzz_timeout_dir):
+        return
+    for f in os.listdir(fuzz_timeout_dir):
+        try:
+            ret, stdout, _ = cppcheck(['-q', '--enable=all', '--inconclusive', f], cwd=fuzz_timeout_dir, timeout=5)
+        except subprocess.TimeoutExpired:
+            failures.append(f)
+
+    assert failures == []

test/cli/testutils.py

@@ -72,13 +72,13 @@ def __lookup_cppcheck_exe():
 
 
 # Run Cppcheck with args
-def cppcheck(args, env=None, remove_checkers_report=True, cwd=None, cppcheck_exe=None):
+def cppcheck(args, env=None, remove_checkers_report=True, cwd=None, cppcheck_exe=None, timeout=None):
     exe = cppcheck_exe if cppcheck_exe else __lookup_cppcheck_exe()
     assert exe is not None, 'no cppcheck binary found'
 
     logging.info(exe + ' ' + ' '.join(args))
     p = subprocess.Popen([exe] + args, stdout=subprocess.PIPE, stderr=subprocess.PIPE, env=env, cwd=cwd)
-    comm = p.communicate()
+    comm = p.communicate(timeout=timeout)
     stdout = comm[0].decode(encoding='utf-8', errors='ignore').replace('\r\n', '\n')
     stderr = comm[1].decode(encoding='utf-8', errors='ignore').replace('\r\n', '\n')
     if remove_checkers_report: