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95 lines
5.0 KiB
95 lines
5.0 KiB
4 weeks ago
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"""Independent MDF 4.10 check of artifacts exported by Mf4RecordingRegressionTest.
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Set DCT_RECORDING_FIXTURES_DIR when running the JUnit test, then run this script
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with that directory. Requires asammdf; it is not an Android/build dependency.
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"""
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import argparse
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import csv
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from datetime import datetime
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from pathlib import Path
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import numpy as np
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from asammdf import MDF
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def verify(directory):
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checks = []
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with MDF(directory / 'relative.mf4') as recording:
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assert recording.version == '4.10'
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assert len(recording.groups) == 1
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assert recording.groups[0].channel_group.cycles_nr == 2
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temperature = recording.get('온도')
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assert temperature.unit == '°C'
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np.testing.assert_array_equal(temperature.samples, [-12.5, 3.75])
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np.testing.assert_allclose(temperature.timestamps, [0.125, 0.5], atol=1e-6)
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np.testing.assert_array_equal(recording.get('Speed').samples, [87.25, 88.0])
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assert np.isnan(recording.get('Missing').samples).all()
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checks.append('relative time, names, units, negative/fractional values, NaN')
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for name, channels in [('empty.mf4', 2), ('time_only.mf4', 1)]:
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with MDF(directory / name) as recording:
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group = recording.groups[0]
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assert group.channel_group.cycles_nr == 0
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assert len(group.channels) == channels
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assert len(recording.get_master(0)) == 0
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checks.append(name)
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with MDF(directory / 'wide.mf4') as recording:
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assert len(recording.groups[0].channels) == 4940
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assert recording.groups[0].channel_group.cycles_nr == 1
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assert recording.get('DBC_0').samples.tolist() == [123.5]
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assert np.isnan(recording.get('DBC_4938').samples).all()
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np.testing.assert_allclose(recording.get_master(0), [0.25], atol=1e-6)
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checks.append('4939-signal DBC width and missing tail')
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with MDF(directory / 'restart.mf4') as recording:
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assert recording.get('Signal').samples.tolist() == [2.0]
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np.testing.assert_allclose(recording.get_master(0), [0.25], atol=1e-6)
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checks.append('restart resets origin, rejects nonfinite timestamps')
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with (directory / 'paired.csv').open(encoding='utf-8', newline='') as stream:
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rows = list(csv.reader(stream))[7:]
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with MDF(directory / 'paired.mf4') as recording:
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signal = recording.get('Signal')
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assert len(rows) == len(signal.samples) == 2
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assert [int(row[1]) for row in rows] == [0, 1]
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np.testing.assert_array_equal([float(row[2]) for row in rows], signal.samples)
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assert [row[0][-4:] for row in rows] == ['.125', '.500']
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np.testing.assert_allclose(signal.timestamps, [0.125, 0.5], atol=1e-6)
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checks.append('CSV/MF4 rows, values and ingress timestamps match')
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shared_origins = []
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for source, first_offset in [('mdb', -0.010), ('dbc', -0.009), ('formula', -0.010)]:
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with (directory / f'queued_{source}.csv').open(encoding='utf-8', newline='') as stream:
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rows = list(csv.reader(stream))[7:]
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with MDF(directory / f'queued_{source}.mf4') as recording:
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signal = recording.get('Signal')
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origin = recording.start_time.timestamp()
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shared_origins.append(origin)
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assert len(rows) == len(signal.samples) == 3
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assert [int(row[1]) for row in rows] == [0, 1, 2]
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np.testing.assert_array_equal(signal.samples, [0., 1., 2.])
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np.testing.assert_array_equal([float(row[2]) for row in rows], signal.samples)
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np.testing.assert_allclose(signal.timestamps, [first_offset, 0., 0.125], rtol=0, atol=1e-6)
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np.testing.assert_allclose(origin, 1790923490.915, rtol=0, atol=1e-6)
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for row, offset in zip(rows, signal.timestamps):
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# UTC/local HH:mm:ss differences do not change the offset within a minute.
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csv_second = float(row[0].rsplit(':', 1)[1])
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mf4_second = (origin + offset) % 60
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np.testing.assert_allclose(csv_second, mf4_second, rtol=0, atol=0.001)
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checks.append(f'{source}: queued ingress preserved, CSV/MF4 absolute time and values match')
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assert len(set(shared_origins)) == 1
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with MDF(directory / 'queued_midnight.mf4') as recording:
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signal = recording.get('Signal')
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origin = recording.start_time.timestamp()
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np.testing.assert_allclose(signal.timestamps, [-0.010], rtol=0, atol=1e-6)
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np.testing.assert_array_equal(signal.samples, [7.])
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absolute = origin + signal.timestamps[0]
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np.testing.assert_allclose(absolute, 1790985599.995, rtol=0, atol=1e-6)
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assert datetime.fromtimestamp(absolute, recording.start_time.tzinfo).date() < recording.start_time.date()
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checks.append('queued ingress crossing UTC midnight preserves the previous date')
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for check in checks:
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print('PASS:', check)
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print('PASS: ten MF4 files opened by independent reader')
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if __name__ == '__main__':
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parser = argparse.ArgumentParser(description=__doc__)
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parser.add_argument('directory', type=Path)
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verify(parser.parse_args().directory)
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