tests: some speed optimizations (commaai#1181)

* mock sleep via monotonic

* rm

* no need to generate 8 buses

* this doesn't actually make a big diff

* lower loop

* can reduce

* here too

* Revert "here too"

This reverts commit 06b4cad.

* Revert "can reduce"

This reverts commit 55cae02.

opendbc/car/tests/test_fw_fingerprint.py

@@ -9,7 +9,7 @@
 from opendbc.car.structs import CarParams
 from opendbc.car.fingerprints import FW_VERSIONS
 from opendbc.car.fw_versions import ESSENTIAL_ECUS, FW_QUERY_CONFIGS, FUZZY_EXCLUDE_ECUS, VERSIONS, build_fw_dict, \
-                                                match_fw_to_car, get_brand_ecu_matches, get_fw_versions, get_fw_versions_ordered, get_present_ecus
+                                                match_fw_to_car, get_brand_ecu_matches, get_fw_versions, get_present_ecus
 from opendbc.car.vin import get_vin
 
 CarFw = CarParams.CarFw
@@ -26,7 +26,7 @@ def assertFingerprints(self, candidates, expected):
   def test_exact_match(self, brand, car_model, ecus, test_non_essential):
     config = FW_QUERY_CONFIGS[brand]
     CP = CarParams()
-    for _ in range(100):
+    for _ in range(20):
       fw = []
       for ecu, fw_versions in ecus.items():
         # Assume non-essential ECUs apply to all cars, so we catch cases where Car A with
@@ -316,8 +316,15 @@ def test_get_fw_versions(self, subtests, mocker):
     def fake_carlog_exception(*args, **kwargs):
       raise
 
+    t = 0
+
+    def fake_monotonic():
+      nonlocal t
+      t += 0.0001
+      return t
+
     mocker.patch("opendbc.car.carlog.exception", fake_carlog_exception)
-    get_fw_versions_ordered(self.fake_can_recv, self.fake_can_send, lambda obd: None, '0' * 17, set())
+    mocker.patch("time.monotonic", fake_monotonic)
     for brand in FW_QUERY_CONFIGS.keys():
       with subtests.test(brand=brand):
         get_fw_versions(self.fake_can_recv, self.fake_can_send, lambda obd: None, brand)