openpilot is an open source driver assistance system. openpilot performs the functions of Automated Lane Centering and Adaptive Cruise Control for over 200 supported car makes and models.
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import random
import numpy as np
import json
from cereal import messaging
from openpilot.selfdrive.locationd.paramsd import retrieve_initial_vehicle_params, migrate_cached_vehicle_params_if_needed
from openpilot.selfdrive.locationd.models.car_kf import CarKalman
from openpilot.selfdrive.locationd.test.test_locationd_scenarios import TEST_ROUTE
from openpilot.selfdrive.test.process_replay.migration import migrate, migrate_carParams
from openpilot.common.params import Params
from openpilot.tools.lib.logreader import LogReader
def get_random_live_parameters(CP):
msg = messaging.new_message("liveParameters")
msg.liveParameters.steerRatio = (random.random() + 0.5) * CP.steerRatio
msg.liveParameters.stiffnessFactor = random.random()
msg.liveParameters.angleOffsetAverageDeg = random.random()
msg.liveParameters.debugFilterState.std = [random.random() for _ in range(CarKalman.P_initial.shape[0])]
return msg
class TestParamsd:
def test_read_saved_params(self):
params = Params()
lr = migrate(LogReader(TEST_ROUTE), [migrate_carParams])
CP = next(m for m in lr if m.which() == "carParams").carParams
msg = get_random_live_parameters(CP)
params.put("LiveParametersV2", msg.to_bytes())
params.put("CarParamsPrevRoute", CP.as_builder().to_bytes())
migrate_cached_vehicle_params_if_needed(params) # this is not tested here but should not mess anything up or throw an error
sr, sf, offset, p_init = retrieve_initial_vehicle_params(params, CP, replay=True, debug=True)
np.testing.assert_allclose(sr, msg.liveParameters.steerRatio)
np.testing.assert_allclose(sf, msg.liveParameters.stiffnessFactor)
np.testing.assert_allclose(offset, msg.liveParameters.angleOffsetAverageDeg)
np.testing.assert_equal(p_init.shape, CarKalman.P_initial.shape)
np.testing.assert_allclose(np.diagonal(p_init), msg.liveParameters.debugFilterState.std)
# TODO Remove this test after the support for old format is removed
def test_read_saved_params_old_format(self):
params = Params()
lr = migrate(LogReader(TEST_ROUTE), [migrate_carParams])
CP = next(m for m in lr if m.which() == "carParams").carParams
msg = get_random_live_parameters(CP)
params.put("LiveParameters", json.dumps(msg.liveParameters.to_dict()))
params.put("CarParamsPrevRoute", CP.as_builder().to_bytes())
params.remove("LiveParametersV2")
migrate_cached_vehicle_params_if_needed(params)
sr, sf, offset, _ = retrieve_initial_vehicle_params(params, CP, replay=True, debug=True)
np.testing.assert_allclose(sr, msg.liveParameters.steerRatio)
np.testing.assert_allclose(sf, msg.liveParameters.stiffnessFactor)
np.testing.assert_allclose(offset, msg.liveParameters.angleOffsetAverageDeg)
assert params.get("LiveParametersV2") is not None
def test_read_saved_params_corrupted_old_format(self):
params = Params()
params.put("LiveParameters", b'\x00\x00\x02\x00\x01\x00:F\xde\xed\xae;')
params.remove("LiveParametersV2")
migrate_cached_vehicle_params_if_needed(params)
assert params.get("LiveParameters") is None
assert params.get("LiveParametersV2") is None