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"""Tests for variable value and unit handling."""
import math
import pytest
from pypck.lcn_defs import VarUnit, VarValue
VARIABLE_TEST_VALUES = (
0,
48,
49,
50,
51,
52,
100,
198,
199,
200,
201,
202,
205,
1000,
1023,
4095,
65535,
)
UNITS_LOSSLESS_ROUNDTRIP = (
VarUnit.NATIVE,
VarUnit.CELSIUS,
VarUnit.KELVIN,
VarUnit.FAHRENHEIT,
VarUnit.LUX_I,
VarUnit.METERPERSECOND,
VarUnit.PERCENT,
VarUnit.VOLT,
VarUnit.AMPERE,
VarUnit.DEGREE,
VarUnit.PPM,
# VarUnit.LUX_T,
)
ROUNDTRIP_TEST_VECTORS = (
*(
(unit, value, value)
for value in VARIABLE_TEST_VALUES
for is_abs in (True, False)
for unit in UNITS_LOSSLESS_ROUNDTRIP
),
)
CALIBRATION_TEST_VECTORS = (
*(
(VarUnit.CELSIUS, native, value)
for native, value in ((0, -100), (1000, 0), (2000, 100))
),
*(
(VarUnit.KELVIN, native, value)
for native, value in (
(0, -100 + 273.15),
(1000, 0 + 273.15),
(2000, 100 + 273.15),
)
),
*(
(VarUnit.FAHRENHEIT, native, value)
for native, value in (
(0, -100 * 1.8 + 32),
(1000, 0 * 1.8 + 32),
(2000, 100 * 1.8 + 32),
)
),
*(
(VarUnit.LUX_I, native, value)
for native, value in (
(0, math.exp(0)),
(10, math.exp(0.1)),
(100, math.exp(1)),
(1000, math.exp(10)),
)
),
*(
(VarUnit.METERPERSECOND, native, value)
for native, value in ((0, 0), (10, 1), (100, 10), (1000, 100))
),
*(
(VarUnit.PERCENT, native, value)
for native, value in ((0, 0), (1, 1), (100, 100))
),
*(
(VarUnit.VOLT, native, value)
for native, value in ((0, 0), (400, 1), (4000, 10))
),
*(
(VarUnit.AMPERE, native, value)
for native, value in ((0, 0), (100, 0.001), (4000, 0.04))
),
*(
(VarUnit.DEGREE, native, value)
for native, value in ((0, -100), (1000, 0), (2000, 100), (4000, 300))
),
*(
(VarUnit.PPM, native, value)
for native, value in ((0, 0), (1, 1), (100, 100), (1000, 1000))
),
# VarUnit.LUX_T,
)
@pytest.mark.parametrize("unit, native, expected", ROUNDTRIP_TEST_VECTORS)
def test_roundtrip(unit: VarUnit, native: int, expected: VarValue) -> None:
"""Test that variable conversion roundtrips."""
assert (
expected
== VarValue.from_var_unit(
VarValue.to_var_unit(VarValue.from_native(native), unit), unit, True
).to_native()
)
@pytest.mark.parametrize("unit, native, value", CALIBRATION_TEST_VECTORS)
def test_calibration(unit: VarUnit, native: int, value: int | float) -> None:
"""Test proper calibration of variable conversion."""
assert value == VarValue.to_var_unit(VarValue.from_native(native), unit)
|
