57 lines
2.2 KiB
Python
57 lines
2.2 KiB
Python
from parameterized import parameterized
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from opendbc.car.can_definitions import CanData
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from opendbc.car.car_helpers import FRAME_FINGERPRINT, can_fingerprint
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from opendbc.car.fingerprints import _FINGERPRINTS as FINGERPRINTS
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class TestCanFingerprint:
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@parameterized.expand(list(FINGERPRINTS.items()))
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def test_can_fingerprint(self, car_model, fingerprints):
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"""Tests online fingerprinting function on offline fingerprints"""
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for fingerprint in fingerprints: # can have multiple fingerprints for each platform
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can = [CanData(address=address, dat=b'\x00' * length, src=src)
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for address, length in fingerprint.items() for src in (0, 1)]
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fingerprint_iter = iter([can])
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car_fingerprint, finger = can_fingerprint(lambda **kwargs: [next(fingerprint_iter, [])]) # noqa: B023
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assert car_fingerprint == car_model
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assert finger[0] == fingerprint
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assert finger[1] == fingerprint
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assert finger[2] == {}
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def test_timing(self, subtests):
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# just pick any CAN fingerprinting car
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car_model = "CHEVROLET_BOLT_EUV"
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fingerprint = FINGERPRINTS[car_model][0]
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cases = []
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# case 1 - one match, make sure we keep going for 100 frames
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can = [CanData(address=address, dat=b'\x00' * length, src=src)
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for address, length in fingerprint.items() for src in (0, 1)]
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cases.append((FRAME_FINGERPRINT, car_model, can))
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# case 2 - no matches, make sure we keep going for 100 frames
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can = [CanData(address=1, dat=b'\x00' * 1, src=src) for src in (0, 1)] # uncommon address
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cases.append((FRAME_FINGERPRINT, None, can))
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# case 3 - multiple matches, make sure we keep going for 200 frames to try to eliminate some
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can = [CanData(address=2016, dat=b'\x00' * 8, src=src) for src in (0, 1)] # common address
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cases.append((FRAME_FINGERPRINT * 2, None, can))
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for expected_frames, car_model, can in cases:
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with subtests.test(expected_frames=expected_frames, car_model=car_model):
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frames = 0
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def can_recv(**kwargs):
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nonlocal frames
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frames += 1
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return [can] # noqa: B023
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car_fingerprint, _ = can_fingerprint(can_recv)
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assert car_fingerprint == car_model
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assert frames == expected_frames + 2 # TODO: fix extra frames
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