Add test that gets all the car params

selfdrive/car/tests/test_car_params.py

@@ -0,0 +1,33 @@
+#!/usr/bin/env python3
+import unittest
+from selfdrive.car.fingerprints import all_known_cars
+from selfdrive.car.car_helpers import interfaces
+from selfdrive.car.fingerprints import _FINGERPRINTS as FINGERPRINTS
+
+
+class TestCarParam(unittest.TestCase):
+  def test_creating_car_params(self):
+    all_cars = all_known_cars()
+
+    for car in all_cars:
+      fingerprint = FINGERPRINTS[car][0]
+
+      CarInterface, CarController, CarState = interfaces[car]
+      fingerprints = {
+        0: fingerprint,
+        1: fingerprint,
+        2: fingerprint,
+      }
+
+      car_fw = []
+
+      for has_relay in [True, False]:
+        car_params = CarInterface.get_params(car, fingerprints, has_relay, car_fw)
+        car_interface = CarInterface(car_params, CarController, CarState), car_params
+
+        assert car_params
+        assert car_interface
+
+
+if __name__ == "__main__":
+  unittest.main()