use a mock function to simulate timeout

selfdrive/car/tests/test_fw_fingerprint.py

@@ -3,6 +3,7 @@ import random
 import time
 import unittest
 from collections import defaultdict
+from unittest import mock
 from parameterized import parameterized
 import threading
 
@@ -175,29 +176,36 @@ class TestFwFingerprint(unittest.TestCase):
 
 class TestFwFingerprintTiming(unittest.TestCase):
   N: int = 5
-  TOL: float = 0.1
+  TOL: float = 0.11
 
   @staticmethod
   def _run_thread(thread: threading.Thread) -> float:
     params = Params()
     params.put_bool("ObdMultiplexingEnabled", True)
     thread.start()
-    t = time.perf_counter()
+
     while thread.is_alive():
       time.sleep(0.02)
       if not params.get_bool("ObdMultiplexingChanged"):
         params.put_bool("ObdMultiplexingChanged", True)
-    return time.perf_counter() - t
+    return 
+  
+  def fake_get_data(self, timeout):
+    self.timeout_total += timeout
+    return {}
 
   def _benchmark_brand(self, brand, num_pandas):
+    query_patch = mock.patch("openpilot.selfdrive.car.isotp_parallel_query.IsoTpParallelQuery.get_data", self.fake_get_data)
+    query_patch.start()
+
     fake_socket = FakeSocket()
-    brand_time = 0
-    for _ in range(self.N):
-      thread = threading.Thread(target=get_fw_versions, args=(fake_socket, fake_socket, brand),
-                                kwargs=dict(num_pandas=num_pandas))
-      brand_time += self._run_thread(thread)
+    self.timeout_total = 0
+    thread = threading.Thread(target=get_fw_versions, args=(fake_socket, fake_socket, brand),
+                              kwargs=dict(num_pandas=num_pandas))
+    self._run_thread(thread)
+    query_patch.stop()
 
-    return brand_time / self.N
+    return self.timeout_total
 
   def _assert_timing(self, avg_time, ref_time):
     self.assertLess(avg_time, ref_time + self.TOL)
@@ -225,14 +233,14 @@ class TestFwFingerprintTiming(unittest.TestCase):
     print(f'get_vin, query time={vin_time / self.N} seconds')
 
   def test_fw_query_timing(self):
-    total_ref_time = 6.07
+    total_ref_time = 5.7
     brand_ref_times = {
       1: {
-        'body': 0.11,
+        'body': 0.1,
         'chrysler': 0.3,
         'ford': 0.2,
-        'honda': 0.52,
-        'hyundai': 0.72,
+        'honda': 0.5,
+        'hyundai': 0.7,
         'mazda': 0.2,
         'nissan': 0.4,
         'subaru': 0.2,
@@ -242,7 +250,7 @@ class TestFwFingerprintTiming(unittest.TestCase):
       },
       2: {
         'ford': 0.3,
-        'hyundai': 1.12,
+        'hyundai': 1.1,
       }
     }