def test_decode_logical():
motorSignal = LinSignal('MotorRPM', 8, 0)
logicalValue = LogicalValue(1, "on")
assert logicalValue.decode(1, motorSignal) == "on"
with pytest.raises(ValueError):
logicalValue.decode(0, motorSignal)
def test_encode_logical():
motorSignal = LinSignal('MotorRPM', 8, 0)
logicalValue = LogicalValue(1, "on")
assert logicalValue.encode("on", motorSignal) == 1
with pytest.raises(ValueError):
logicalValue.encode('off', motorSignal)
def test_encode_physical_string_with_wrong_unit():
motorSignal = LinSignal('MotorRPM', 8, 0)
physicalValue = PhysicalValue(0, 254, 0.3937, 0, 'rpm')
with pytest.raises(ValueError):
physicalValue.encode('50deg', motorSignal)
with pytest.raises(ValueError):
physicalValue.encode('101deg', motorSignal)
def test_decode_logical_no_signal_info():
motorSignal = LinSignal('MotorRPM', 8, 0)
logicalValue = LogicalValue(1)
assert logicalValue.decode(1, motorSignal) == 1
with pytest.raises(ValueError):
logicalValue.decode(0, motorSignal)
def test_encode_signal_bcd():
counterSignal = LinSignal('Counter', 24, [0, 1, 2])
counterValue = BCDValue()
signalType = LinSignalType('CounterType', [counterValue])
assert signalType.encode(1, counterSignal) == [0, 0, 1]
assert signalType.encode(12, counterSignal) == [0, 1, 2]
assert signalType.encode(123, counterSignal) == [1, 2, 3]
def test_encode_physical_unitless_numeric():
motorSignal = LinSignal('MotorRPM', 8, 0)
physicalValue = PhysicalValue(0, 254, 0.3937, 0, 'rpm')
assert physicalValue.encode(0, motorSignal) == 0
assert physicalValue.encode(100, motorSignal) == 254
with pytest.raises(ValueError):
physicalValue.encode(-1, motorSignal)
with pytest.raises(ValueError):
physicalValue.encode(101, motorSignal)
def test_encode_physical_string_with_unit():
motorSignal = LinSignal('MotorRPM', 8, 0)
physicalValue = PhysicalValue(0, 254, 0.3937, 0, 'rpm')
assert physicalValue.encode('0rpm', motorSignal) == 0
assert physicalValue.encode('100rpm', motorSignal) == 254
with pytest.raises(ValueError):
physicalValue.encode('-1rpm', motorSignal)
with pytest.raises(ValueError):
physicalValue.encode('101rpm', motorSignal)
def test_encode_signal_scalar():
motorSignal = LinSignal('MotorRPM', 8, 0)
offValue = LogicalValue(0, 'off')
motorSpeed = PhysicalValue(1, 99, 1, 0, 'rpm')
overdrive = PhysicalValue(100, 255, 0, 100)
signalType = LinSignalType('MotorType', [motorSpeed, overdrive, offValue])
assert signalType.encode('off', motorSignal) == 0
assert signalType.encode(99, motorSignal) == 99
assert signalType.encode(101, motorSignal) == 100
assert signalType.encode(120, motorSignal) == 100
def test_decode_bcd():
bcdValue = BCDValue()
assert bcdValue.decode([1], LinSignal('Counter', 8, [0])) == 1
assert bcdValue.decode([1, 2], LinSignal('Counter', 16, [0, 0])) == 12
assert bcdValue.decode([1, 2, 3], LinSignal('Counter', 24, [0, 0, 0])) == 123
assert bcdValue.decode([1, 2, 3, 4], LinSignal('Counter', 32, [0, 0, 0, 0])) == 1234
assert bcdValue.decode([1, 2, 3, 4, 5], LinSignal('Counter', 40, [0, 0, 0, 0, 0])) == 12345
assert bcdValue.decode([1, 2, 3, 4, 5, 6], LinSignal('Counter', 48, [0, 0, 0, 0, 0, 0])) == 123456
def test_encode_bcd():
bcdValue = BCDValue()
assert bcdValue.encode(1, LinSignal('Counter', 8, [0])) == [1]
assert bcdValue.encode(12, LinSignal('Counter', 16, [0, 0])) == [1, 2]
assert bcdValue.encode(123, LinSignal('Counter', 24, [0, 0, 0])) == [1, 2, 3]
assert bcdValue.encode(1234, LinSignal('Counter', 32, [0, 0, 0, 0])) == [1, 2, 3, 4]
assert bcdValue.encode(12345, LinSignal('Counter', 40, [0, 0, 0, 0, 0])) == [1, 2, 3, 4, 5]
assert bcdValue.encode(123456, LinSignal('Counter', 48, [0, 0, 0, 0, 0, 0])) == [1, 2, 3, 4, 5, 6]
def test_decode_physical_invalid():
motorSignal = LinSignal('MotorRPM', 8, 0)
physicalValue = PhysicalValue(0, 254, 0.3937, 0, 'rpm')
with pytest.raises(ValueError):
physicalValue.decode(-1, motorSignal)
def test_decode_physical_valid():
motorSignal = LinSignal('MotorRPM', 8, 0)
physicalValue = PhysicalValue(0, 254, 0.3937, 0, 'rpm')
assert physicalValue.decode(0, motorSignal) == 0
assert abs(physicalValue.decode(254, motorSignal) - 100.0) < 0.01
def test_encode_physical_scale_zero():
motorSignal = LinSignal('MotorRPM', 8, 0)
value = PhysicalValue(100, 255, 0, 100, 'rpm')
assert value.encode(100, motorSignal) == 100
assert value.encode(120, motorSignal) == 100
def test_encode_signal_ascii():
textSignal = LinSignal('Text', 24, list("ABC"))
textValue = ASCIIValue()
signalType = LinSignalType('TextType', [textValue])
assert signalType.encode("ABC", textSignal) == [65, 66, 67]
def test_decode_ascii():
idSignal = LinSignal('Id', 48, [0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF])
asciiValue = ASCIIValue()
assert asciiValue.decode([65, 66, 67, 49, 50, 51], idSignal) == 'ABC123'
def test_encode_bcd_out_of_bounds():
bcdValue = BCDValue()
with pytest.raises(ValueError):
bcdValue.encode(123, LinSignal('Counter', 16, [0, 0]))