def test_pid():
cmd = OBDCommand("", "", b"0123", 4, noop, ECU.ENGINE)
assert cmd.pid == 0x23
cmd = OBDCommand("", "", b"01", 4, noop, ECU.ENGINE)
assert cmd.pid == None
cmd = OBDCommand("", "", b"totally not hex", 4, noop, ECU.ENGINE)
assert cmd.mode == None
def test_get_mode():
cmd = OBDCommand("", "", b"0123", 4, noop, ECU.ENGINE)
assert cmd.mode == 0x01
cmd = OBDCommand("", "", b"", 4, noop, ECU.ENGINE)
assert cmd.mode == None
cmd = OBDCommand("", "", b"totally not hex", 4, noop, ECU.ENGINE)
assert cmd.mode == None
def test_constructor():
# default constructor
# name description cmd bytes decoder ECU
cmd = OBDCommand("Test", "example OBD command", b"0123", 2, noop,
ECU.ENGINE)
assert cmd.name is "Test"
assert cmd.desc is "example OBD command"
assert cmd.command == b"0123"
assert cmd.bytes == 2
assert cmd.decode == noop
assert cmd.ecu == ECU.ENGINE
assert cmd.fast is False
assert cmd.mode == 1
assert cmd.pid == 35
# a case where "fast", and "supported" were set explicitly
# name description cmd bytes decoder ECU fast
cmd = OBDCommand("Test 2", "example OBD command", b"0123", 2, noop,
ECU.ENGINE, True)
assert cmd.fast is True
def test_clone():
# name description mode cmd bytes decoder
cmd = OBDCommand("", "", b"0123", 2, noop, ECU.ENGINE)
other = cmd.clone()
assert cmd.name == other.name
assert cmd.desc == other.desc
assert cmd.command == other.command
assert cmd.bytes == other.bytes
assert cmd.decode == other.decode
assert cmd.ecu == other.ecu
assert cmd.fast == cmd.fast
def test_call():
p = SAE_J1850_PWM(["48 6B 10 41 00 FF FF FF FF AA"
]) # train the ecu_map to identify the engine
messages = p(["48 6B 10 41 00 BE 1F B8 11 AA"
]) # parse valid data into response object
print(messages[0].data)
# valid response size
cmd = OBDCommand("", "", b"0123", 6, noop, ECU.ENGINE)
r = cmd(messages)
assert r.value == bytearray([0x41, 0x00, 0xBE, 0x1F, 0xB8, 0x11])
# response too short (pad)
cmd = OBDCommand("", "", b"0123", 7, noop, ECU.ENGINE)
r = cmd(messages)
assert r.value == bytearray([0x41, 0x00, 0xBE, 0x1F, 0xB8, 0x11, 0x00])
# response too long (clip)
cmd = OBDCommand("", "", b"0123", 5, noop, ECU.ENGINE)
r = cmd(messages)
assert r.value == bytearray([0x41, 0x00, 0xBE, 0x1F, 0xB8])
def test_call():
p = SAE_J1850_PWM(["48 6B 10 41 00 FF FF FF FF AA"
]) # train the ecu_map to identify the engine
messages = p(["48 6B 10 41 00 BE 1F B8 11 AA"
]) # parse valid data into response object
print(messages[0].data)
# valid response size
cmd = OBDCommand("", "", "0123", 4, noop, ECU.ENGINE)
r = cmd(messages)
assert r.value == b'\xBE\x1F\xB8\x11'
# response too short (pad)
cmd = OBDCommand("", "", "0123", 5, noop, ECU.ENGINE)
r = cmd(messages)
assert r.value == b'\xBE\x1F\xB8\x11\x00'
# response too long (clip)
cmd = OBDCommand("", "", "0123", 3, noop, ECU.ENGINE)
r = cmd(messages)
assert r.value == b'\xBE\x1F\xB8'
message = Message([])
message.data = bytearray(b'response data')
message.ecu = ECU.ENGINE # picked engine so that simple commands like RPM will work
return [message]
def _test_last_command(self, expected):
r = self._last_command == expected
self._last_command = None
return r
# a toy command to test with
command = OBDCommand("Test_Command", \
"A test command", \
"0123456789ABCDEF", \
0, \
noop, \
ECU.ALL, \
True)
def test_is_connected():
o = obd.OBD("/dev/null")
assert not o.is_connected()
# our fake ELM class always returns success for connections
o.interface = FakeELM("/dev/null")
assert o.is_connected()
def test_status():
def test_pid_int():
cmd = OBDCommand("", "", "0123", 4, noop, ECU.ENGINE)
assert cmd.pid_int == 0x23
cmd = OBDCommand("", "", "01", 4, noop, ECU.ENGINE)
assert cmd.pid_int == 0
def test_get_mode_int():
cmd = OBDCommand("", "", "0123", 4, noop, ECU.ENGINE)
assert cmd.mode_int == 0x01
cmd = OBDCommand("", "", "", "23", 4, noop, ECU.ENGINE)
assert cmd.mode_int == 0
message = Message([])
message.data = bytearray(b'response data')
message.ecu = ECU.ENGINE # picked engine so that simple commands like RPM will work
return [message]
def _test_last_command(self, expected):
r = self._last_command == expected
self._last_command = None
return r
# a toy command to test with
command = OBDCommand("Test_Command",
"A test command",
"0123456789ABCDEF",
0,
noop,
ECU.ALL,
True)
def test_is_connected():
o = obd.OBD("/dev/null")
assert not o.is_connected()
# our fake ELM class always returns success for connections
o.interface = FakeELM("/dev/null")
assert o.is_connected()
def test_status():