def test_set_pi_parameters_timeout():
serial = MockSerial(INVALID_RESPONSE)
attiny = AttinyProtocol(serial)
with pytest.raises(InvalidResponseException):
attiny.set_pi_parameters(0, 0, 0)
assert len(serial.received) == 6
assert serial.received[:1] == SET_PI
def test_set_pi_parameters_timeout():
serial = MockSerial(b'')
attiny = AttinyProtocol(serial)
result = attiny.set_pi_parameters(0, 0, 0)
assert len(serial.received) == 6
assert result == False
def test_set_pi_parameters_max():
serial = MockSerial(ACK)
attiny = AttinyProtocol(serial)
result = attiny.set_pi_parameters(INT16_MAX, INT16_MAX, UINT8_MAX)
assert result == True
assert len(serial.received) == 6
assert serial.received[:1] == SET_PI
assert serial.received[1:3] == INT16_MAX_ENCODED
assert serial.received[3:5] == INT16_MAX_ENCODED
assert serial.received[5:] == UINT8_MAX_ENCODED
def test_set_pi_parameters_inrange():
p = 0
i = -1
s = 1
p_encoded = p.to_bytes(2, 'big', signed=True)
i_encoded = i.to_bytes(2, 'big', signed=True)
s_encoded = s.to_bytes(1, 'big')
serial = MockSerial(ACK)
attiny = AttinyProtocol(serial)
result = attiny.set_pi_parameters(p, i, s)
assert result == True
assert len(serial.received) == 6
assert serial.received[:1] == SET_PI
assert serial.received[1:3] == p_encoded
assert serial.received[3:5] == i_encoded
assert serial.received[5:] == s_encoded