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test_OBDCommand.py

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from obd.commands import OBDCommand

from obd.decoders import noop

from obd.protocols import *

from obd.protocols.protocol import Message

def test_constructor():

# name description mode cmd bytes decoder

cmd = OBDCommand("Test", "example OBD command", "01", "23", 2, noop)

assert cmd.name == "Test"

assert cmd.desc == "example OBD command"

assert cmd.mode == "01"

assert cmd.pid == "23"

assert cmd.bytes == 2

assert cmd.decode == noop

assert cmd.supported == False

assert cmd.get_command() == "0123"

assert cmd.get_mode_int() == 1

assert cmd.get_pid_int() == 35

cmd = OBDCommand("Test", "example OBD command", "01", "23", 2, noop, True)

assert cmd.supported == True

def test_clone():

# name description mode cmd bytes decoder

cmd = OBDCommand("", "", "01", "23", 2, noop)

other = cmd.clone()

assert cmd.name == other.name

assert cmd.desc == other.desc

assert cmd.mode == other.mode

assert cmd.pid == other.pid

assert cmd.bytes == other.bytes

assert cmd.decode == other.decode

assert cmd.supported == cmd.supported

def test_call():

p = SAE_J1850_PWM()

m = p(["48 6B 10 41 00 BE 1F B8 11 AA"]) # parse valid data into response object

# valid response size

cmd = OBDCommand("", "", "01", "23", 4, noop)

r = cmd(m[0])

assert r.value == "BE1FB811"

# response too short (pad)

cmd = OBDCommand("", "", "01", "23", 5, noop)

r = cmd(m[0])

assert r.value == "BE1FB81100"

# response too long (clip)

cmd = OBDCommand("", "", "01", "23", 3, noop)

r = cmd(m[0])

assert r.value == "BE1FB8"

def test_get_command():

cmd = OBDCommand("", "", "01", "23", 4, noop)

assert cmd.get_command() == "0123" # simple concat of mode and PID

def test_get_mode_int():

cmd = OBDCommand("", "", "01", "23", 4, noop)

assert cmd.get_mode_int() == 0x01

cmd = OBDCommand("", "", "", "23", 4, noop)

assert cmd.get_mode_int() == 0

def test_get_pid_int():

cmd = OBDCommand("", "", "01", "23", 4, noop)

assert cmd.get_pid_int() == 0x23

cmd = OBDCommand("", "", "01", "", 4, noop)

assert cmd.get_pid_int() == 0