def setUp(self):
''' Sets up the test environment '''
self.client = None
self.decoder = ServerDecoder()
self._tcp = ModbusSocketFramer(decoder=self.decoder)
self._rtu = ModbusRtuFramer(decoder=self.decoder)
self._ascii = ModbusAsciiFramer(decoder=self.decoder)
self._binary = ModbusBinaryFramer(decoder=self.decoder)
self._manager = DictTransactionManager(self.client)
self._queue_manager = FifoTransactionManager(self.client)
self._tm = ModbusTransactionManager(self.client)
def __init__(self, framer=None):
''' Initializes the framer module
:param framer: The framer to use for the protocol
'''
self.framer = framer or ModbusSocketFramer(ClientDecoder())
self._requests = deque() # link queue to tid
class ModbusTcpClientProtocol(ModbusClientProtocol):
"""
Async TCP Client protocol based on twisted.
Default framer: ModbusSocketFramer
"""
framer = ModbusSocketFramer(ClientDecoder())
def __init__(self, framer=ModbusSocketFramer(ClientDecoder())):
''' Initializes the framer module
:param framer: The framer to use for the protocol
'''
self.done = False
self.framer = framer
def main():
""" The main runner function """
options = get_options()
if options.debug:
try:
log.setLevel(logging.DEBUG)
logging.basicConfig()
except Exception as ex:
print("Logging is not supported on this system")
# split the query into a starting and ending range
query = [int(p) for p in options.query.split(':')]
try:
log.debug("Initializing the client")
framer = ModbusSocketFramer(ClientDecoder())
reader = LoggingContextReader(options.output)
factory = ScraperFactory(framer, reader, query)
# how to connect based on TCP vs Serial clients
if isinstance(framer, ModbusSocketFramer):
reactor.connectTCP(options.host, options.port, factory)
else:
SerialModbusClient(factory, options.port, reactor)
log.debug("Starting the client")
reactor.run()
log.debug("Finished scraping the client")
except Exception as ex:
print(ex)
def __init__(self, framer=None):
''' Initializes the framer module
:param framer: The framer to use for the protocol
'''
self.framer = framer or ModbusSocketFramer(ClientDecoder())
serial = not isinstance(framer, ModbusSocketFramer)
self.transaction = ModbusTransactionManager(self, serial)
def testClientProtocolConnect(self):
''' Test the client protocol connect '''
decoder = object()
framer = ModbusSocketFramer(decoder)
protocol = ModbusClientProtocol(framer=framer)
self.assertFalse(protocol._connected)
protocol.connectionMade()
self.assertTrue(protocol._connected)
def __init__(self, framer=None, **kwargs):
self._connected = False
self.framer = framer or ModbusSocketFramer(ClientDecoder())
if isinstance(self.framer, type):
# Framer class not instance
self.framer = self.framer(ClientDecoder(), client=None)
if isinstance(self.framer, ModbusSocketFramer):
self.transaction = DictTransactionManager(self, **kwargs)
else:
self.transaction = FifoTransactionManager(self, **kwargs)
def __init__(self, host='127.0.0.1', port=Defaults.Port):
''' Initialize a client instance
:param host: The host to connect to (default 127.0.0.1)
:param port: The modbus port to connect to (default 502)
'''
self.host = host
self.port = port
self.socket = None
BaseModbusClient.__init__(self, ModbusSocketFramer(ClientDecoder()))
def __init__(self, framer=None):
''' Initializes the framer module
:param framer: The framer to use for the protocol
'''
self.framer = framer or ModbusSocketFramer(ClientDecoder())
if isinstance(self.framer, ModbusSocketFramer):
self.transaction = DictTransactionManager(self)
else:
self.transaction = FifoTransactionManager(self)
def setUp(self):
""" Sets up the test environment """
self.client = None
self.decoder = ServerDecoder()
self._tcp = ModbusSocketFramer(decoder=self.decoder, client=None)
self._rtu = ModbusRtuFramer(decoder=self.decoder, client=None)
self._ascii = ModbusAsciiFramer(decoder=self.decoder, client=None)
self._binary = ModbusBinaryFramer(decoder=self.decoder, client=None)
self._manager = DictTransactionManager(self.client)
self._queue_manager = FifoTransactionManager(self.client)
self._tm = ModbusTransactionManager(self.client)
def __init__(self, framer=None, **kwargs):
""" Initializes the framer module
:param framer: The framer to use for the protocol
"""
deprecated(self.__class__.__name__)
self.framer = framer or ModbusSocketFramer(ClientDecoder())
if isinstance(self.framer, ModbusSocketFramer):
self.transaction = DictTransactionManager(self, **kwargs)
else:
self.transaction = FifoTransactionManager(self, **kwargs)
def __init__(self, framer=None, **kwargs):
""" Initializes the framer module
:param framer: The framer to use for the protocol. Default:
ModbusSocketFramer
:type framer: pymodbus.transaction.ModbusSocketFramer
"""
self._connected = False
super(BaseAsyncModbusClient,
self).__init__(framer or ModbusSocketFramer(ClientDecoder()),
**kwargs)
def testClientProtocolExecute(self):
''' Test the client protocol execute method '''
framer = ModbusSocketFramer(None)
protocol = ModbusClientProtocol(framer=framer)
protocol.connectionMade()
protocol.transport = Mock()
protocol.transport.write = Mock()
request = ReadCoilsRequest(1, 1)
d = protocol.execute(request)
tid = request.transaction_id
self.assertEqual(d, protocol.transaction.getTransaction(tid))
def __implementation(method):
''' Returns the requested framer
:method: The serial framer to instantiate
:returns: The requested serial framer
'''
method = method.lower()
if method == 'ascii': return ModbusAsciiFramer(ClientDecoder())
elif method == 'rtu': return ModbusRtuFramer(ClientDecoder())
elif method == 'binary': return ModbusBinaryFramer(ClientDecoder())
elif method == 'socket': return ModbusSocketFramer(ClientDecoder())
raise ParameterException("Invalid framer method requested")
def _framer(method):
if method == "ascii":
framer = ModbusAsciiFramer(ClientDecoder())
elif method == "rtu":
framer = ModbusRtuFramer(ClientDecoder())
elif method == "binary":
framer = ModbusBinaryFramer(ClientDecoder())
elif method == "socket":
framer = ModbusSocketFramer(ClientDecoder())
else:
framer = None
return framer
def testClientProtocolExecute(self, protocol):
''' Test the client protocol execute method '''
framer = ModbusSocketFramer(None)
protocol = protocol(framer=framer)
transport = mock.MagicMock()
protocol.connection_made(transport)
protocol.transport.write = mock.Mock()
request = ReadCoilsRequest(1, 1)
d = protocol.execute(request)
tid = request.transaction_id
assert d == protocol.transaction.getTransaction(tid)
def testClientProtocolDataReceived(self):
''' Test the client protocol data received '''
protocol = ModbusClientProtocol(ModbusSocketFramer(ClientDecoder()))
protocol.connectionMade()
out = []
data = b'\x00\x00\x12\x34\x00\x06\xff\x01\x01\x02\x00\x04'
# setup existing request
d = protocol._buildResponse(0x00)
d.addCallback(lambda v: out.append(v))
protocol.dataReceived(data)
self.assertTrue(isinstance(out[0], ReadCoilsResponse))
def __init__(self, framer=None, **kwargs):
''' Initializes the framer module
:param framer: The framer to use for the protocol
'''
self._connected = False
self.framer = framer or ModbusSocketFramer(ClientDecoder())
if isinstance(self.framer, type):
# Framer class not instance
self.framer = self.framer(ClientDecoder(), client=None)
if isinstance(self.framer, ModbusSocketFramer):
self.transaction = DictTransactionManager(self, **kwargs)
else:
self.transaction = FifoTransactionManager(self, **kwargs)
def testClientProtocolConnectionMade(self, protocol):
"""
Test the client protocol close
:return:
"""
protocol = protocol(ModbusSocketFramer(ClientDecoder()))
transport = mock.MagicMock()
factory = mock.MagicMock()
if isinstance(protocol, ModbusUdpClientProtocol):
protocol.factory = factory
protocol.connection_made(transport)
assert protocol.transport == transport
assert protocol.connected
if isinstance(protocol, ModbusUdpClientProtocol):
assert protocol.factory.protocol_made_connection.call_count == 1
def testTcpTwistedClient(self):
"""
Test the TCP Twisted client
:return:
"""
from twisted.internet import reactor
with patch("twisted.internet.reactor") as mock_reactor:
def test_callback(client):
pass
def test_errback(client):
pass
AsyncModbusTCPClient(schedulers.REACTOR,
framer=ModbusSocketFramer(ClientDecoder()),
callback=test_callback,
errback=test_errback)
def testClientProtocolClose(self, protocol):
"""
Test the client protocol close
:return:
"""
protocol = protocol(ModbusSocketFramer(ClientDecoder()))
transport = mock.MagicMock()
factory = mock.MagicMock()
if isinstance(protocol, ModbusUdpClientProtocol):
protocol.factory = factory
protocol.connection_made(transport)
assert protocol.transport == transport
assert protocol.connected
protocol.close()
transport.close.assert_called_once_with()
assert not protocol.connected
def testClientProtocolDataReceived(self, protocol):
''' Test the client protocol data received '''
protocol = protocol(ModbusSocketFramer(ClientDecoder()))
transport = mock.MagicMock()
protocol.connection_made(transport)
assert protocol.transport == transport
assert protocol.connected
data = b'\x00\x00\x12\x34\x00\x06\xff\x01\x01\x02\x00\x04'
# setup existing request
d = protocol._buildResponse(0x00)
if isinstance(protocol, ModbusClientProtocol):
protocol.data_received(data)
else:
protocol.datagram_received(data, None)
result = d.result()
assert isinstance(result, ReadCoilsResponse)
def generator(max_num):
framer = ModbusSocketFramer(None)
for index in range(0, len(choosed_function)):
path = 'GeneratedDataModbus\OriginDataModbus\Modbus_' + choosed_function[
index].func_name + '.txt'
f_txt = open(path, 'w')
for i in range(0, max_num):
_arguments = dict()
_arguments['protocol'] = 0x0000
_arguments['transaction'] = random_integer(1, pow(2, 16 - 1))
_arguments['unit'] = random_integer(1, 247)
result = choosed_function[index](framer, _arguments)
f_txt.write(str(result[0]) + '\n')
f_txt.close()
def generator(max_num):
framer = ModbusSocketFramer(None)
for index in range(0, len(choosed_function)):
path = 'Modbus_data\Origin_generated_data\Modbus_' + choosed_function[index].func_name + '_' \
+ str(files_number('Modbus_data\Origin_generated_data', 'Modbus_' + choosed_function[index].func_name)+1) + '.txt'
f_txt = open(path, 'w')
for i in range(0, max_num):
_arguments = dict()
_arguments['protocol'] = 0x0000
_arguments['transaction'] = random_integer(1, pow(2, 16 - 1))
_arguments['unit'] = random_integer(1, 247)
result = choosed_function[index](framer, _arguments)
f_txt.write(str(result[0]) + '\n') # Just save request packets
f_txt.close()
def iterate_generator(max_num):
f_txt = open('Modbus_data\Origin_generated_data\modbus.txt', 'w')
# field_names = ['request', 'response']
# writer = csv.DictWriter(f, fieldnames=field_names)
# writer.writeheader()
framer = ModbusSocketFramer(None)
for i in range(0, max_num):
index = random_integer(0, len(functions) - 1)
_arguments = dict()
_arguments['protocol'] = 0x0000
_arguments['transaction'] = random_integer(1, pow(2, 16 - 1))
_arguments['unit'] = random_integer(1, 247)
result = functions[index](framer, _arguments)
# writer.writerow({'request':result[0], 'response': result[1]})
f_txt.write(str(result[0]) + '\n')
f_txt.close()
def testClientProtocolConnectionLost(self, protocol):
''' Test the client protocol connection lost'''
framer = ModbusSocketFramer(None)
protocol = protocol(framer=framer)
transport = mock.MagicMock()
factory = mock.MagicMock()
if isinstance(protocol, ModbusUdpClientProtocol):
protocol.factory = factory
protocol.connection_made(transport)
protocol.transport.write = mock.Mock()
request = ReadCoilsRequest(1, 1)
d = protocol.execute(request)
protocol.connection_lost("REASON")
excp = d.exception()
assert (isinstance(excp, ConnectionException))
if isinstance(protocol, ModbusUdpClientProtocol):
assert protocol.factory.protocol_lost_connection.call_count == 1
async def testClientProtocolExecute(self, protocol):
''' Test the client protocol execute method '''
import asyncio
framer = ModbusSocketFramer(None)
protocol = protocol(framer=framer)
protocol.create_future = mock.MagicMock()
fut = asyncio.Future()
fut.set_result(fut)
protocol.create_future.return_value = fut
transport = mock.MagicMock()
protocol.connection_made(transport)
protocol.transport.write = mock.Mock()
request = ReadCoilsRequest(1, 1)
d = await protocol.execute(request)
tid = request.transaction_id
f = protocol.transaction.getTransaction(tid)
assert d == f
def testUdpTornadoClient(self, mock_iostream, mock_ioloop):
""" Test the udp tornado client client initialize """
protocol, future = AsyncModbusUDPClient(schedulers.IO_LOOP, framer=ModbusSocketFramer(ClientDecoder()))
client = future.result()
assert(isinstance(client, AsyncTornadoModbusUdoClient))
assert(0 == len(list(client.transaction)))
assert(isinstance(client.framer, ModbusSocketFramer))
assert(client.port == 502)
assert(client._connected)
def handle_failure(failure):
assert(isinstance(failure.exception(), ConnectionException))
d = client._build_response(0x00)
d.add_done_callback(handle_failure)
assert(client._connected)
client.close()
protocol.stop()
assert(not client._connected)
def testClientProtocolConnectionLost(self, protocol):
''' Test the client protocol connection lost'''
framer = ModbusSocketFramer(None)
protocol = protocol(framer=framer, timeout=0)
protocol.execute = mock.MagicMock()
# future = asyncio.Future()
# future.set_result(ReadCoilsResponse([1]))
# protocol._execute = mock.MagicMock(side_effect=future)
transport = mock.MagicMock()
factory = mock.MagicMock()
if isinstance(protocol, ModbusUdpClientProtocol):
protocol.factory = factory
protocol.connection_made(transport)
protocol.transport.write = mock.Mock()
request = ReadCoilsRequest(1, 1)
d = protocol.execute(request)
# d = await d
protocol.connection_lost("REASON")
excp = d.exception()
assert (isinstance(excp, ConnectionException))
if isinstance(protocol, ModbusUdpClientProtocol):
assert protocol.factory.protocol_lost_connection.call_count == 1
def main(output='datastore.pickle',
port=502,
host='127.0.0.1',
device=0x01,
range='0:1000',
debug=False):
""" The main runner function """
if debug:
try:
log.setLevel(logging.DEBUG)
logging.basicConfig()
except Exception as ex:
print("Logging is not supported on this system")
# split the query into a starting and ending range
query = [int(p) for p in range.split(':')]
global SLAVE
SLAVE = device
try:
log.debug("Initializing the client")
framer = ModbusSocketFramer(ClientDecoder())
reader = LoggingContextReader(output)
factory = ScraperFactory(framer, reader, query)
# how to connect based on TCP vs Serial clients
if isinstance(framer, ModbusSocketFramer):
reactor.connectTCP(host, port, factory)
else:
SerialModbusClient(factory, options.port, reactor)
log.debug("Starting the client")
reactor.run()
log.debug("Finished scraping the client")
except Exception as ex:
print(ex)
class ModbusTransactionTest(unittest.TestCase):
"""
This is the unittest for the pymodbus.transaction module
"""
# ----------------------------------------------------------------------- #
# Test Construction
# ----------------------------------------------------------------------- #
def setUp(self):
""" Sets up the test environment """
self.client = None
self.decoder = ServerDecoder()
self._tcp = ModbusSocketFramer(decoder=self.decoder, client=None)
self._rtu = ModbusRtuFramer(decoder=self.decoder, client=None)
self._ascii = ModbusAsciiFramer(decoder=self.decoder, client=None)
self._binary = ModbusBinaryFramer(decoder=self.decoder, client=None)
self._manager = DictTransactionManager(self.client)
self._queue_manager = FifoTransactionManager(self.client)
self._tm = ModbusTransactionManager(self.client)
def tearDown(self):
""" Cleans up the test environment """
del self._manager
del self._tcp
del self._rtu
del self._ascii
# ----------------------------------------------------------------------- #
# Base transaction manager
# ----------------------------------------------------------------------- #
def testCalculateExpectedResponseLength(self):
self._tm.client = MagicMock()
self._tm.client.framer = MagicMock()
self._tm._set_adu_size()
self.assertEqual(self._tm._calculate_response_length(0), None)
self._tm.base_adu_size = 10
self.assertEqual(self._tm._calculate_response_length(5), 15)
def testCalculateExceptionLength(self):
for framer, exception_length in [('ascii', 11),
('binary', 7),
('rtu', 5),
('tcp', 9),
('dummy', None)]:
self._tm.client = MagicMock()
if framer == "ascii":
self._tm.client.framer = self._ascii
elif framer == "binary":
self._tm.client.framer = self._binary
elif framer == "rtu":
self._tm.client.framer = self._rtu
elif framer == "tcp":
self._tm.client.framer = self._tcp
else:
self._tm.client.framer = MagicMock()
self._tm._set_adu_size()
self.assertEqual(self._tm._calculate_exception_length(),
exception_length)
def testExecute(self):
client = MagicMock()
client.framer = self._ascii
client.framer._buffer = b'deadbeef'
client.framer.processIncomingPacket = MagicMock()
client.framer.processIncomingPacket.return_value = None
client.framer.buildPacket = MagicMock()
client.framer.buildPacket.return_value = b'deadbeef'
client.framer.sendPacket = MagicMock()
client.framer.sendPacket.return_value = len(b'deadbeef')
request = MagicMock()
request.get_response_pdu_size.return_value = 10
request.unit_id = 1
tm = ModbusTransactionManager(client)
tm._recv = MagicMock(return_value=b'abcdef')
self.assertEqual(tm.retries, 3)
self.assertEqual(tm.retry_on_empty, False)
# tm._transact = MagicMock()
# some response
# tm._transact.return_value = (b'abcdef', None)
tm.getTransaction = MagicMock()
tm.getTransaction.return_value = 'response'
response = tm.execute(request)
self.assertEqual(response, 'response')
# No response
tm._recv = MagicMock(return_value=b'abcdef')
# tm._transact.return_value = (b'', None)
tm.transactions = []
tm.getTransaction = MagicMock()
tm.getTransaction.return_value = None
response = tm.execute(request)
self.assertIsInstance(response, ModbusIOException)
# No response with retries
tm.retry_on_empty = True
tm._recv = MagicMock(side_effect=iter([b'', b'abcdef']))
# tm._transact.side_effect = [(b'', None), (b'abcdef', None)]
response = tm.execute(request)
self.assertIsInstance(response, ModbusIOException)
# Unable to decode response
tm._recv = MagicMock(side_effect=ModbusIOException())
# tm._transact.side_effect = [(b'abcdef', None)]
client.framer.processIncomingPacket.side_effect = MagicMock(side_effect=ModbusIOException())
self.assertIsInstance(tm.execute(request), ModbusIOException)
# ----------------------------------------------------------------------- #
# Dictionary based transaction manager
# ----------------------------------------------------------------------- #
def testDictTransactionManagerTID(self):
""" Test the dict transaction manager TID """
for tid in range(1, self._manager.getNextTID() + 10):
self.assertEqual(tid+1, self._manager.getNextTID())
self._manager.reset()
self.assertEqual(1, self._manager.getNextTID())
def testGetDictTransactionManagerTransaction(self):
""" Test the dict transaction manager """
class Request: pass
self._manager.reset()
handle = Request()
handle.transaction_id = self._manager.getNextTID()
handle.message = b"testing"
self._manager.addTransaction(handle)
result = self._manager.getTransaction(handle.transaction_id)
self.assertEqual(handle.message, result.message)
def testDeleteDictTransactionManagerTransaction(self):
""" Test the dict transaction manager """
class Request: pass
self._manager.reset()
handle = Request()
handle.transaction_id = self._manager.getNextTID()
handle.message = b"testing"
self._manager.addTransaction(handle)
self._manager.delTransaction(handle.transaction_id)
self.assertEqual(None, self._manager.getTransaction(handle.transaction_id))
# ----------------------------------------------------------------------- #
# Queue based transaction manager
# ----------------------------------------------------------------------- #
def testFifoTransactionManagerTID(self):
""" Test the fifo transaction manager TID """
for tid in range(1, self._queue_manager.getNextTID() + 10):
self.assertEqual(tid+1, self._queue_manager.getNextTID())
self._queue_manager.reset()
self.assertEqual(1, self._queue_manager.getNextTID())
def testGetFifoTransactionManagerTransaction(self):
""" Test the fifo transaction manager """
class Request: pass
self._queue_manager.reset()
handle = Request()
handle.transaction_id = self._queue_manager.getNextTID()
handle.message = b"testing"
self._queue_manager.addTransaction(handle)
result = self._queue_manager.getTransaction(handle.transaction_id)
self.assertEqual(handle.message, result.message)
def testDeleteFifoTransactionManagerTransaction(self):
""" Test the fifo transaction manager """
class Request: pass
self._queue_manager.reset()
handle = Request()
handle.transaction_id = self._queue_manager.getNextTID()
handle.message = b"testing"
self._queue_manager.addTransaction(handle)
self._queue_manager.delTransaction(handle.transaction_id)
self.assertEqual(None, self._queue_manager.getTransaction(handle.transaction_id))
# ----------------------------------------------------------------------- #
# TCP tests
# ----------------------------------------------------------------------- #
def testTCPFramerTransactionReady(self):
""" Test a tcp frame transaction """
msg = b"\x00\x01\x12\x34\x00\x04\xff\x02\x12\x34"
self.assertFalse(self._tcp.isFrameReady())
self.assertFalse(self._tcp.checkFrame())
self._tcp.addToFrame(msg)
self.assertTrue(self._tcp.isFrameReady())
self.assertTrue(self._tcp.checkFrame())
self._tcp.advanceFrame()
self.assertFalse(self._tcp.isFrameReady())
self.assertFalse(self._tcp.checkFrame())
self.assertEqual(b'', self._ascii.getFrame())
def testTCPFramerTransactionFull(self):
""" Test a full tcp frame transaction """
msg = b"\x00\x01\x12\x34\x00\x04\xff\x02\x12\x34"
self._tcp.addToFrame(msg)
self.assertTrue(self._tcp.checkFrame())
result = self._tcp.getFrame()
self.assertEqual(msg[7:], result)
self._tcp.advanceFrame()
def testTCPFramerTransactionHalf(self):
""" Test a half completed tcp frame transaction """
msg1 = b"\x00\x01\x12\x34\x00"
msg2 = b"\x04\xff\x02\x12\x34"
self._tcp.addToFrame(msg1)
self.assertFalse(self._tcp.checkFrame())
result = self._tcp.getFrame()
self.assertEqual(b'', result)
self._tcp.addToFrame(msg2)
self.assertTrue(self._tcp.checkFrame())
result = self._tcp.getFrame()
self.assertEqual(msg2[2:], result)
self._tcp.advanceFrame()
def testTCPFramerTransactionHalf2(self):
""" Test a half completed tcp frame transaction """
msg1 = b"\x00\x01\x12\x34\x00\x04\xff"
msg2 = b"\x02\x12\x34"
self._tcp.addToFrame(msg1)
self.assertFalse(self._tcp.checkFrame())
result = self._tcp.getFrame()
self.assertEqual(b'', result)
self._tcp.addToFrame(msg2)
self.assertTrue(self._tcp.checkFrame())
result = self._tcp.getFrame()
self.assertEqual(msg2, result)
self._tcp.advanceFrame()
def testTCPFramerTransactionHalf3(self):
""" Test a half completed tcp frame transaction """
msg1 = b"\x00\x01\x12\x34\x00\x04\xff\x02\x12"
msg2 = b"\x34"
self._tcp.addToFrame(msg1)
self.assertFalse(self._tcp.checkFrame())
result = self._tcp.getFrame()
self.assertEqual(msg1[7:], result)
self._tcp.addToFrame(msg2)
self.assertTrue(self._tcp.checkFrame())
result = self._tcp.getFrame()
self.assertEqual(msg1[7:] + msg2, result)
self._tcp.advanceFrame()
def testTCPFramerTransactionShort(self):
""" Test that we can get back on track after an invalid message """
msg1 = b"\x99\x99\x99\x99\x00\x01\x00\x01"
msg2 = b"\x00\x01\x12\x34\x00\x04\xff\x02\x12\x34"
self._tcp.addToFrame(msg1)
self.assertFalse(self._tcp.checkFrame())
result = self._tcp.getFrame()
self.assertEqual(b'', result)
self._tcp.advanceFrame()
self._tcp.addToFrame(msg2)
self.assertEqual(10, len(self._tcp._buffer))
self.assertTrue(self._tcp.checkFrame())
result = self._tcp.getFrame()
self.assertEqual(msg2[7:], result)
self._tcp.advanceFrame()
def testTCPFramerPopulate(self):
""" Test a tcp frame packet build """
expected = ModbusRequest()
expected.transaction_id = 0x0001
expected.protocol_id = 0x1234
expected.unit_id = 0xff
msg = b"\x00\x01\x12\x34\x00\x04\xff\x02\x12\x34"
self._tcp.addToFrame(msg)
self.assertTrue(self._tcp.checkFrame())
actual = ModbusRequest()
self._tcp.populateResult(actual)
for name in ['transaction_id', 'protocol_id', 'unit_id']:
self.assertEqual(getattr(expected, name), getattr(actual, name))
self._tcp.advanceFrame()
def testTCPFramerPacket(self):
""" Test a tcp frame packet build """
old_encode = ModbusRequest.encode
ModbusRequest.encode = lambda self: b''
message = ModbusRequest()
message.transaction_id = 0x0001
message.protocol_id = 0x1234
message.unit_id = 0xff
message.function_code = 0x01
expected = b"\x00\x01\x12\x34\x00\x02\xff\x01"
actual = self._tcp.buildPacket(message)
self.assertEqual(expected, actual)
ModbusRequest.encode = old_encode
# ----------------------------------------------------------------------- #
# RTU tests
# ----------------------------------------------------------------------- #
def testRTUFramerTransactionReady(self):
""" Test if the checks for a complete frame work """
self.assertFalse(self._rtu.isFrameReady())
msg_parts = [b"\x00\x01\x00", b"\x00\x00\x01\xfc\x1b"]
self._rtu.addToFrame(msg_parts[0])
self.assertTrue(self._rtu.isFrameReady())
self.assertFalse(self._rtu.checkFrame())
self._rtu.addToFrame(msg_parts[1])
self.assertTrue(self._rtu.isFrameReady())
self.assertTrue(self._rtu.checkFrame())
def testRTUFramerTransactionFull(self):
""" Test a full rtu frame transaction """
msg = b"\x00\x01\x00\x00\x00\x01\xfc\x1b"
stripped_msg = msg[1:-2]
self._rtu.addToFrame(msg)
self.assertTrue(self._rtu.checkFrame())
result = self._rtu.getFrame()
self.assertEqual(stripped_msg, result)
self._rtu.advanceFrame()
def testRTUFramerTransactionHalf(self):
""" Test a half completed rtu frame transaction """
msg_parts = [b"\x00\x01\x00", b"\x00\x00\x01\xfc\x1b"]
stripped_msg = b"".join(msg_parts)[1:-2]
self._rtu.addToFrame(msg_parts[0])
self.assertFalse(self._rtu.checkFrame())
self._rtu.addToFrame(msg_parts[1])
self.assertTrue(self._rtu.isFrameReady())
self.assertTrue(self._rtu.checkFrame())
result = self._rtu.getFrame()
self.assertEqual(stripped_msg, result)
self._rtu.advanceFrame()
def testRTUFramerPopulate(self):
""" Test a rtu frame packet build """
request = ModbusRequest()
msg = b"\x00\x01\x00\x00\x00\x01\xfc\x1b"
self._rtu.addToFrame(msg)
self._rtu.populateHeader()
self._rtu.populateResult(request)
header_dict = self._rtu._header
self.assertEqual(len(msg), header_dict['len'])
self.assertEqual(byte2int(msg[0]), header_dict['uid'])
self.assertEqual(msg[-2:], header_dict['crc'])
self.assertEqual(0x00, request.unit_id)
def testRTUFramerPacket(self):
""" Test a rtu frame packet build """
old_encode = ModbusRequest.encode
ModbusRequest.encode = lambda self: b''
message = ModbusRequest()
message.unit_id = 0xff
message.function_code = 0x01
expected = b"\xff\x01\x81\x80" # only header + CRC - no data
actual = self._rtu.buildPacket(message)
self.assertEqual(expected, actual)
ModbusRequest.encode = old_encode
def testRTUDecodeException(self):
""" Test that the RTU framer can decode errors """
message = b"\x00\x90\x02\x9c\x01"
actual = self._rtu.addToFrame(message)
result = self._rtu.checkFrame()
self.assertTrue(result)
def testProcess(self):
class MockResult(object):
def __init__(self, code):
self.function_code = code
def mock_callback(self):
pass
mock_result = MockResult(code=0)
self._rtu.getRawFrame = self._rtu.getFrame = MagicMock()
self._rtu.decoder = MagicMock()
self._rtu.decoder.decode = MagicMock(return_value=mock_result)
self._rtu.populateResult = MagicMock()
self._rtu.advanceFrame = MagicMock()
self._rtu._process(mock_callback)
self._rtu.populateResult.assert_called_with(mock_result)
self._rtu.advanceFrame.assert_called_with()
self.assertTrue(self._rtu.advanceFrame.called)
#Check errors
self._rtu.decoder.decode = MagicMock(return_value=None)
self.assertRaises(ModbusIOException, lambda: self._rtu._process(mock_callback))
def testRTUProcessIncomingPAkcets(self):
mock_data = b"\x00\x01\x00\x00\x00\x01\xfc\x1b"
unit = 0x00
def mock_callback(self):
pass
self._rtu.addToFrame = MagicMock()
self._rtu._process = MagicMock()
self._rtu.isFrameReady = MagicMock(return_value=False)
self._rtu._buffer = mock_data
self._rtu.processIncomingPacket(mock_data, mock_callback, unit)
# ----------------------------------------------------------------------- #
# ASCII tests
# ----------------------------------------------------------------------- #
def testASCIIFramerTransactionReady(self):
""" Test a ascii frame transaction """
msg = b':F7031389000A60\r\n'
self.assertFalse(self._ascii.isFrameReady())
self.assertFalse(self._ascii.checkFrame())
self._ascii.addToFrame(msg)
self.assertTrue(self._ascii.isFrameReady())
self.assertTrue(self._ascii.checkFrame())
self._ascii.advanceFrame()
self.assertFalse(self._ascii.isFrameReady())
self.assertFalse(self._ascii.checkFrame())
self.assertEqual(b'', self._ascii.getFrame())
def testASCIIFramerTransactionFull(self):
""" Test a full ascii frame transaction """
msg = b'sss:F7031389000A60\r\n'
pack = a2b_hex(msg[6:-4])
self._ascii.addToFrame(msg)
self.assertTrue(self._ascii.checkFrame())
result = self._ascii.getFrame()
self.assertEqual(pack, result)
self._ascii.advanceFrame()
def testASCIIFramerTransactionHalf(self):
""" Test a half completed ascii frame transaction """
msg1 = b'sss:F7031389'
msg2 = b'000A60\r\n'
pack = a2b_hex(msg1[6:] + msg2[:-4])
self._ascii.addToFrame(msg1)
self.assertFalse(self._ascii.checkFrame())
result = self._ascii.getFrame()
self.assertEqual(b'', result)
self._ascii.addToFrame(msg2)
self.assertTrue(self._ascii.checkFrame())
result = self._ascii.getFrame()
self.assertEqual(pack, result)
self._ascii.advanceFrame()
def testASCIIFramerPopulate(self):
""" Test a ascii frame packet build """
request = ModbusRequest()
self._ascii.populateResult(request)
self.assertEqual(0x00, request.unit_id)
def testASCIIFramerPacket(self):
""" Test a ascii frame packet build """
old_encode = ModbusRequest.encode
ModbusRequest.encode = lambda self: b''
message = ModbusRequest()
message.unit_id = 0xff
message.function_code = 0x01
expected = b":FF0100\r\n"
actual = self._ascii.buildPacket(message)
self.assertEqual(expected, actual)
ModbusRequest.encode = old_encode
def testAsciiProcessIncomingPakcets(self):
mock_data = msg = b':F7031389000A60\r\n'
unit = 0x00
def mock_callback(mock_data, *args, **kwargs):
pass
self._ascii.processIncomingPacket(mock_data, mock_callback, unit)
# Test failure:
self._ascii.checkFrame = MagicMock(return_value=False)
self._ascii.processIncomingPacket(mock_data, mock_callback, unit)
# ----------------------------------------------------------------------- #
# Binary tests
# ----------------------------------------------------------------------- #
def testBinaryFramerTransactionReady(self):
""" Test a binary frame transaction """
msg = b'\x7b\x01\x03\x00\x00\x00\x05\x85\xC9\x7d'
self.assertFalse(self._binary.isFrameReady())
self.assertFalse(self._binary.checkFrame())
self._binary.addToFrame(msg)
self.assertTrue(self._binary.isFrameReady())
self.assertTrue(self._binary.checkFrame())
self._binary.advanceFrame()
self.assertFalse(self._binary.isFrameReady())
self.assertFalse(self._binary.checkFrame())
self.assertEqual(b'', self._binary.getFrame())
def testBinaryFramerTransactionFull(self):
""" Test a full binary frame transaction """
msg = b'\x7b\x01\x03\x00\x00\x00\x05\x85\xC9\x7d'
pack = msg[2:-3]
self._binary.addToFrame(msg)
self.assertTrue(self._binary.checkFrame())
result = self._binary.getFrame()
self.assertEqual(pack, result)
self._binary.advanceFrame()
def testBinaryFramerTransactionHalf(self):
""" Test a half completed binary frame transaction """
msg1 = b'\x7b\x01\x03\x00'
msg2 = b'\x00\x00\x05\x85\xC9\x7d'
pack = msg1[2:] + msg2[:-3]
self._binary.addToFrame(msg1)
self.assertFalse(self._binary.checkFrame())
result = self._binary.getFrame()
self.assertEqual(b'', result)
self._binary.addToFrame(msg2)
self.assertTrue(self._binary.checkFrame())
result = self._binary.getFrame()
self.assertEqual(pack, result)
self._binary.advanceFrame()
def testBinaryFramerPopulate(self):
""" Test a binary frame packet build """
request = ModbusRequest()
self._binary.populateResult(request)
self.assertEqual(0x00, request.unit_id)
def testBinaryFramerPacket(self):
""" Test a binary frame packet build """
old_encode = ModbusRequest.encode
ModbusRequest.encode = lambda self: b''
message = ModbusRequest()
message.unit_id = 0xff
message.function_code = 0x01
expected = b'\x7b\xff\x01\x81\x80\x7d'
actual = self._binary.buildPacket(message)
self.assertEqual(expected, actual)
ModbusRequest.encode = old_encode
def testBinaryProcessIncomingPacket(self):
mock_data = b'\x7b\x01\x03\x00\x00\x00\x05\x85\xC9\x7d'
unit = 0x00
def mock_callback(mock_data):
pass
self._binary.processIncomingPacket(mock_data, mock_callback, unit)
# Test failure:
self._binary.checkFrame = MagicMock(return_value=False)
self._binary.processIncomingPacket(mock_data, mock_callback, unit)
class ModbusTransactionTest(unittest.TestCase):
'''
This is the unittest for the pymodbus.transaction module
'''
#---------------------------------------------------------------------------#
# Test Construction
#---------------------------------------------------------------------------#
def setUp(self):
''' Sets up the test environment '''
self.client = None
self.decoder = ServerDecoder()
self._tcp = ModbusSocketFramer(decoder=self.decoder)
self._rtu = ModbusRtuFramer(decoder=self.decoder)
self._ascii = ModbusAsciiFramer(decoder=self.decoder)
self._binary = ModbusBinaryFramer(decoder=self.decoder)
self._manager = DictTransactionManager(self.client)
self._queue_manager = FifoTransactionManager(self.client)
self._tm = ModbusTransactionManager(self.client)
def tearDown(self):
''' Cleans up the test environment '''
del self._manager
del self._tcp
del self._rtu
del self._ascii
#---------------------------------------------------------------------------#
# Dictionary based transaction manager
#---------------------------------------------------------------------------#
def testDictTransactionManagerTID(self):
''' Test the dict transaction manager TID '''
for tid in range(1, self._manager.getNextTID() + 10):
self.assertEqual(tid+1, self._manager.getNextTID())
self._manager.reset()
self.assertEqual(1, self._manager.getNextTID())
def testGetDictTransactionManagerTransaction(self):
''' Test the dict transaction manager '''
class Request: pass
self._manager.reset()
handle = Request()
handle.transaction_id = self._manager.getNextTID()
handle.message = b"testing"
self._manager.addTransaction(handle)
result = self._manager.getTransaction(handle.transaction_id)
self.assertEqual(handle.message, result.message)
def testDeleteDictTransactionManagerTransaction(self):
''' Test the dict transaction manager '''
class Request: pass
self._manager.reset()
handle = Request()
handle.transaction_id = self._manager.getNextTID()
handle.message = b"testing"
self._manager.addTransaction(handle)
self._manager.delTransaction(handle.transaction_id)
self.assertEqual(None, self._manager.getTransaction(handle.transaction_id))
#---------------------------------------------------------------------------#
# Queue based transaction manager
#---------------------------------------------------------------------------#
def testFifoTransactionManagerTID(self):
''' Test the fifo transaction manager TID '''
for tid in range(1, self._queue_manager.getNextTID() + 10):
self.assertEqual(tid+1, self._queue_manager.getNextTID())
self._queue_manager.reset()
self.assertEqual(1, self._queue_manager.getNextTID())
def testGetFifoTransactionManagerTransaction(self):
''' Test the fifo transaction manager '''
class Request: pass
self._queue_manager.reset()
handle = Request()
handle.transaction_id = self._queue_manager.getNextTID()
handle.message = b"testing"
self._queue_manager.addTransaction(handle)
result = self._queue_manager.getTransaction(handle.transaction_id)
self.assertEqual(handle.message, result.message)
def testDeleteFifoTransactionManagerTransaction(self):
''' Test the fifo transaction manager '''
class Request: pass
self._queue_manager.reset()
handle = Request()
handle.transaction_id = self._queue_manager.getNextTID()
handle.message = b"testing"
self._queue_manager.addTransaction(handle)
self._queue_manager.delTransaction(handle.transaction_id)
self.assertEqual(None, self._queue_manager.getTransaction(handle.transaction_id))
#---------------------------------------------------------------------------#
# TCP tests
#---------------------------------------------------------------------------#
def testTCPFramerTransactionReady(self):
''' Test a tcp frame transaction '''
msg = b"\x00\x01\x12\x34\x00\x04\xff\x02\x12\x34"
self.assertFalse(self._tcp.isFrameReady())
self.assertFalse(self._tcp.checkFrame())
self._tcp.addToFrame(msg)
self.assertTrue(self._tcp.isFrameReady())
self.assertTrue(self._tcp.checkFrame())
self._tcp.advanceFrame()
self.assertFalse(self._tcp.isFrameReady())
self.assertFalse(self._tcp.checkFrame())
self.assertEqual(b'', self._ascii.getFrame())
def testTCPFramerTransactionFull(self):
''' Test a full tcp frame transaction '''
msg = b"\x00\x01\x12\x34\x00\x04\xff\x02\x12\x34"
self._tcp.addToFrame(msg)
self.assertTrue(self._tcp.checkFrame())
result = self._tcp.getFrame()
self.assertEqual(msg[7:], result)
self._tcp.advanceFrame()
def testTCPFramerTransactionHalf(self):
''' Test a half completed tcp frame transaction '''
msg1 = b"\x00\x01\x12\x34\x00"
msg2 = b"\x04\xff\x02\x12\x34"
self._tcp.addToFrame(msg1)
self.assertFalse(self._tcp.checkFrame())
result = self._tcp.getFrame()
self.assertEqual(b'', result)
self._tcp.addToFrame(msg2)
self.assertTrue(self._tcp.checkFrame())
result = self._tcp.getFrame()
self.assertEqual(msg2[2:], result)
self._tcp.advanceFrame()
def testTCPFramerTransactionHalf2(self):
''' Test a half completed tcp frame transaction '''
msg1 = b"\x00\x01\x12\x34\x00\x04\xff"
msg2 = b"\x02\x12\x34"
self._tcp.addToFrame(msg1)
self.assertFalse(self._tcp.checkFrame())
result = self._tcp.getFrame()
self.assertEqual(b'', result)
self._tcp.addToFrame(msg2)
self.assertTrue(self._tcp.checkFrame())
result = self._tcp.getFrame()
self.assertEqual(msg2, result)
self._tcp.advanceFrame()
def testTCPFramerTransactionHalf3(self):
''' Test a half completed tcp frame transaction '''
msg1 = b"\x00\x01\x12\x34\x00\x04\xff\x02\x12"
msg2 = b"\x34"
self._tcp.addToFrame(msg1)
self.assertFalse(self._tcp.checkFrame())
result = self._tcp.getFrame()
self.assertEqual(msg1[7:], result)
self._tcp.addToFrame(msg2)
self.assertTrue(self._tcp.checkFrame())
result = self._tcp.getFrame()
self.assertEqual(msg1[7:] + msg2, result)
self._tcp.advanceFrame()
def testTCPFramerTransactionShort(self):
''' Test that we can get back on track after an invalid message '''
msg1 = b"\x99\x99\x99\x99\x00\x01\x00\x01"
msg2 = b"\x00\x01\x12\x34\x00\x04\xff\x02\x12\x34"
self._tcp.addToFrame(msg1)
self.assertFalse(self._tcp.checkFrame())
result = self._tcp.getFrame()
self.assertEqual(b'', result)
self._tcp.advanceFrame()
self._tcp.addToFrame(msg2)
self.assertEqual(10, len(self._tcp._buffer))
self.assertTrue(self._tcp.checkFrame())
result = self._tcp.getFrame()
self.assertEqual(msg2[7:], result)
self._tcp.advanceFrame()
def testTCPFramerPopulate(self):
''' Test a tcp frame packet build '''
expected = ModbusRequest()
expected.transaction_id = 0x0001
expected.protocol_id = 0x1234
expected.unit_id = 0xff
msg = b"\x00\x01\x12\x34\x00\x04\xff\x02\x12\x34"
self._tcp.addToFrame(msg)
self.assertTrue(self._tcp.checkFrame())
actual = ModbusRequest()
self._tcp.populateResult(actual)
for name in ['transaction_id', 'protocol_id', 'unit_id']:
self.assertEqual(getattr(expected, name), getattr(actual, name))
self._tcp.advanceFrame()
def testTCPFramerPacket(self):
''' Test a tcp frame packet build '''
old_encode = ModbusRequest.encode
ModbusRequest.encode = lambda self: b''
message = ModbusRequest()
message.transaction_id = 0x0001
message.protocol_id = 0x1234
message.unit_id = 0xff
message.function_code = 0x01
expected = b"\x00\x01\x12\x34\x00\x02\xff\x01"
actual = self._tcp.buildPacket(message)
self.assertEqual(expected, actual)
ModbusRequest.encode = old_encode
#---------------------------------------------------------------------------#
# RTU tests
#---------------------------------------------------------------------------#
def testRTUFramerTransactionReady(self):
''' Test if the checks for a complete frame work '''
self.assertFalse(self._rtu.isFrameReady())
msg_parts = [b"\x00\x01\x00", b"\x00\x00\x01\xfc\x1b"]
self._rtu.addToFrame(msg_parts[0])
self.assertTrue(self._rtu.isFrameReady())
self.assertFalse(self._rtu.checkFrame())
self._rtu.addToFrame(msg_parts[1])
self.assertTrue(self._rtu.isFrameReady())
self.assertTrue(self._rtu.checkFrame())
def testRTUFramerTransactionFull(self):
''' Test a full rtu frame transaction '''
msg = b"\x00\x01\x00\x00\x00\x01\xfc\x1b"
stripped_msg = msg[1:-2]
self._rtu.addToFrame(msg)
self.assertTrue(self._rtu.checkFrame())
result = self._rtu.getFrame()
self.assertEqual(stripped_msg, result)
self._rtu.advanceFrame()
def testRTUFramerTransactionHalf(self):
''' Test a half completed rtu frame transaction '''
msg_parts = [b"\x00\x01\x00", b"\x00\x00\x01\xfc\x1b"]
stripped_msg = b"".join(msg_parts)[1:-2]
self._rtu.addToFrame(msg_parts[0])
self.assertFalse(self._rtu.checkFrame())
self._rtu.addToFrame(msg_parts[1])
self.assertTrue(self._rtu.isFrameReady())
self.assertTrue(self._rtu.checkFrame())
result = self._rtu.getFrame()
self.assertEqual(stripped_msg, result)
self._rtu.advanceFrame()
def testRTUFramerPopulate(self):
''' Test a rtu frame packet build '''
request = ModbusRequest()
msg = b"\x00\x01\x00\x00\x00\x01\xfc\x1b"
self._rtu.addToFrame(msg)
self._rtu.populateHeader()
self._rtu.populateResult(request)
header_dict = self._rtu._header
self.assertEqual(len(msg), header_dict['len'])
self.assertEqual(byte2int(msg[0]), header_dict['uid'])
self.assertEqual(msg[-2:], header_dict['crc'])
self.assertEqual(0x00, request.unit_id)
def testRTUFramerPacket(self):
''' Test a rtu frame packet build '''
old_encode = ModbusRequest.encode
ModbusRequest.encode = lambda self: b''
message = ModbusRequest()
message.unit_id = 0xff
message.function_code = 0x01
expected = b"\xff\x01\x81\x80" # only header + CRC - no data
actual = self._rtu.buildPacket(message)
self.assertEqual(expected, actual)
ModbusRequest.encode = old_encode
def testRTUDecodeException(self):
''' Test that the RTU framer can decode errors '''
message = b"\x00\x90\x02\x9c\x01"
actual = self._rtu.addToFrame(message)
result = self._rtu.checkFrame()
self.assertTrue(result)
def testProcess(self):
class MockResult(object):
def __init__(self, code):
self.function_code = code
def mock_callback(self):
pass
mock_result = MockResult(code=0)
self._rtu.getRawFrame = self._rtu.getFrame = MagicMock()
self._rtu.decoder = MagicMock()
self._rtu.decoder.decode = MagicMock(return_value=mock_result)
self._rtu.populateResult = MagicMock()
self._rtu.advanceFrame = MagicMock()
self._rtu._process(mock_callback)
self._rtu.populateResult.assert_called_with(mock_result)
self._rtu.advanceFrame.assert_called_with()
self.assertTrue(self._rtu.advanceFrame.called)
#Check errors
self._rtu.decoder.decode = MagicMock(return_value=None)
self.assertRaises(ModbusIOException, lambda: self._rtu._process(mock_callback))
def testRTUProcessIncomingPAkcets(self):
mock_data = b"\x00\x01\x00\x00\x00\x01\xfc\x1b"
def mock_callback(self):
pass
self._rtu.addToFrame = MagicMock()
self._rtu._process = MagicMock()
self._rtu.isFrameReady = MagicMock(return_value=False)
self._rtu._buffer = mock_data
self._rtu.processIncomingPacket(mock_data, mock_callback)
#---------------------------------------------------------------------------#
# ASCII tests
#---------------------------------------------------------------------------#
def testASCIIFramerTransactionReady(self):
''' Test a ascii frame transaction '''
msg = b':F7031389000A60\r\n'
self.assertFalse(self._ascii.isFrameReady())
self.assertFalse(self._ascii.checkFrame())
self._ascii.addToFrame(msg)
self.assertTrue(self._ascii.isFrameReady())
self.assertTrue(self._ascii.checkFrame())
self._ascii.advanceFrame()
self.assertFalse(self._ascii.isFrameReady())
self.assertFalse(self._ascii.checkFrame())
self.assertEqual(b'', self._ascii.getFrame())
def testASCIIFramerTransactionFull(self):
''' Test a full ascii frame transaction '''
msg = b'sss:F7031389000A60\r\n'
pack = a2b_hex(msg[6:-4])
self._ascii.addToFrame(msg)
self.assertTrue(self._ascii.checkFrame())
result = self._ascii.getFrame()
self.assertEqual(pack, result)
self._ascii.advanceFrame()
def testASCIIFramerTransactionHalf(self):
''' Test a half completed ascii frame transaction '''
msg1 = b'sss:F7031389'
msg2 = b'000A60\r\n'
pack = a2b_hex(msg1[6:] + msg2[:-4])
self._ascii.addToFrame(msg1)
self.assertFalse(self._ascii.checkFrame())
result = self._ascii.getFrame()
self.assertEqual(b'', result)
self._ascii.addToFrame(msg2)
self.assertTrue(self._ascii.checkFrame())
result = self._ascii.getFrame()
self.assertEqual(pack, result)
self._ascii.advanceFrame()
def testASCIIFramerPopulate(self):
''' Test a ascii frame packet build '''
request = ModbusRequest()
self._ascii.populateResult(request)
self.assertEqual(0x00, request.unit_id)
def testASCIIFramerPacket(self):
''' Test a ascii frame packet build '''
old_encode = ModbusRequest.encode
ModbusRequest.encode = lambda self: b''
message = ModbusRequest()
message.unit_id = 0xff
message.function_code = 0x01
expected = b":FF0100\r\n"
actual = self._ascii.buildPacket(message)
self.assertEqual(expected, actual)
ModbusRequest.encode = old_encode
def testAsciiProcessIncomingPakcets(self):
mock_data = msg = b':F7031389000A60\r\n'
def mock_callback(mock_data):
pass
self._ascii.processIncomingPacket(mock_data, mock_callback)
# Test failure:
self._ascii.checkFrame = MagicMock(return_value=False)
self._ascii.processIncomingPacket(mock_data, mock_callback)
#---------------------------------------------------------------------------#
# Binary tests
#---------------------------------------------------------------------------#
def testBinaryFramerTransactionReady(self):
''' Test a binary frame transaction '''
msg = b'\x7b\x01\x03\x00\x00\x00\x05\x85\xC9\x7d'
self.assertFalse(self._binary.isFrameReady())
self.assertFalse(self._binary.checkFrame())
self._binary.addToFrame(msg)
self.assertTrue(self._binary.isFrameReady())
self.assertTrue(self._binary.checkFrame())
self._binary.advanceFrame()
self.assertFalse(self._binary.isFrameReady())
self.assertFalse(self._binary.checkFrame())
self.assertEqual(b'', self._binary.getFrame())
def testBinaryFramerTransactionFull(self):
''' Test a full binary frame transaction '''
msg = b'\x7b\x01\x03\x00\x00\x00\x05\x85\xC9\x7d'
pack = msg[2:-3]
self._binary.addToFrame(msg)
self.assertTrue(self._binary.checkFrame())
result = self._binary.getFrame()
self.assertEqual(pack, result)
self._binary.advanceFrame()
def testBinaryFramerTransactionHalf(self):
''' Test a half completed binary frame transaction '''
msg1 = b'\x7b\x01\x03\x00'
msg2 = b'\x00\x00\x05\x85\xC9\x7d'
pack = msg1[2:] + msg2[:-3]
self._binary.addToFrame(msg1)
self.assertFalse(self._binary.checkFrame())
result = self._binary.getFrame()
self.assertEqual(b'', result)
self._binary.addToFrame(msg2)
self.assertTrue(self._binary.checkFrame())
result = self._binary.getFrame()
self.assertEqual(pack, result)
self._binary.advanceFrame()
def testBinaryFramerPopulate(self):
''' Test a binary frame packet build '''
request = ModbusRequest()
self._binary.populateResult(request)
self.assertEqual(0x00, request.unit_id)
def testBinaryFramerPacket(self):
''' Test a binary frame packet build '''
old_encode = ModbusRequest.encode
ModbusRequest.encode = lambda self: b''
message = ModbusRequest()
message.unit_id = 0xff
message.function_code = 0x01
expected = b'\x7b\xff\x01\x81\x80\x7d'
actual = self._binary.buildPacket(message)
self.assertEqual(expected, actual)
ModbusRequest.encode = old_encode
def testBinaryProcessIncomingPacket(self):
mock_data = b'\x7b\x01\x03\x00\x00\x00\x05\x85\xC9\x7d'
def mock_callback(mock_data):
pass
self._binary.processIncomingPacket(mock_data, mock_callback)
# Test failure:
self._binary.checkFrame = MagicMock(return_value=False)
self._binary.processIncomingPacket(mock_data, mock_callback)