car interfaces: test longitudinal params are set correctly (#26894)

* add long unit tests and fix

* revert

* remove debug

* cleanup

Co-authored-by: Laptop Researcher <laptop@researcher.com>
old-commit-hash: dac7a24677

selfdrive/car/tests/test_car_interfaces.py

@@ -35,6 +35,12 @@ class TestCarInterfaces(unittest.TestCase):
     self.assertGreater(car_params.centerToFront, 0)
     self.assertGreater(car_params.maxLateralAccel, 0)
 
+    # Longitudinal sanity checks
+    self.assertEqual(len(car_params.longitudinalTuning.kpV), len(car_params.longitudinalTuning.kpBP))
+    self.assertEqual(len(car_params.longitudinalTuning.kiV), len(car_params.longitudinalTuning.kiBP))
+    self.assertEqual(len(car_params.longitudinalTuning.deadzoneV), len(car_params.longitudinalTuning.deadzoneBP))
+
+    # Lateral sanity checks
     if car_params.steerControlType != car.CarParams.SteerControlType.angle:
       tune = car_params.lateralTuning
       if tune.which() == 'pid':