def producer(self, ready_event, msg_read):
self.client_bus = Bus(can_interface)
ready_event.wait()
for i in range(self.num_messages):
m = Message(arbitration_id=self.ids[i],
is_remote_frame=self.remote_flags[i],
is_error_frame=self.error_flags[i],
extended_id=self.extended_flags[i],
data=self.data[i])
logging.debug("writing message: {}".format(m))
#logging.debug("DATA: {}".format(self.data[i]))
# Don't send until the other thread is ready
msg_read.wait()
msg_read.clear()
self.client_bus.send(m)
def testProducerConsumer(self):
logging.debug("testing producer/consumer")
ready = threading.Event()
msg_read = threading.Event()
self.server_bus = Bus(can_interface)
t = threading.Thread(target=self.producer, args=(ready, msg_read))
t.start()
# Ensure there are no messages on the bus
while True:
m = self.server_bus.recv(timeout=0.5)
if m is None:
print("No messages... lets go")
break
else:
print("received messages before the test has started...")
self.assertTrue(False)
ready.set()
i = 0
while i < self.num_messages:
msg_read.set()
msg = self.server_bus.recv(timeout=0.5)
self.assertIsNotNone(msg, "Didn't receive a message")
logging.debug("Received message {} with data: {}".format(
i, msg.data))
self.assertEqual(msg.id_type, self.extended_flags[i])
self.assertEqual(msg.data, self.data[i])
self.assertEqual(msg.arbitration_id, self.ids[i])
self.assertEqual(msg.is_error_frame, self.error_flags[i])
self.assertEqual(msg.is_remote_frame, self.remote_flags[i])
i += 1
t.join()
self.server_bus.flush_tx_buffer()
self.server_bus.shutdown()
def producer(self, ready_event, msg_read):
self.client_bus = Bus(can_interface)
ready_event.wait()
for i in range(self.num_messages):
m = Message(
arbitration_id=self.ids[i],
is_remote_frame=self.remote_flags[i],
is_error_frame=self.error_flags[i],
extended_id=self.extended_flags[i],
data=self.data[i]
)
logging.debug("writing message: {}".format(m))
#logging.debug("DATA: {}".format(self.data[i]))
# Don't send until the other thread is ready
msg_read.wait()
msg_read.clear()
self.client_bus.send(m)
def testProducerConsumer(self):
logging.debug("testing producer/consumer")
ready = threading.Event()
msg_read = threading.Event()
self.server_bus = Bus(can_interface)
t = threading.Thread(target=self.producer, args=(ready, msg_read))
t.start()
# Ensure there are no messages on the bus
while True:
m = self.server_bus.recv(timeout=0.5)
if m is None:
print("No messages... lets go")
break
else:
print("received messages before the test has started...")
self.assertTrue(False)
ready.set()
i = 0
while i < self.num_messages:
msg_read.set()
msg = self.server_bus.recv(timeout=0.5)
self.assertIsNotNone(msg, "Didn't receive a message")
logging.debug("Received message {} with data: {}".format(i, msg.data))
self.assertEqual(msg.id_type, self.extended_flags[i])
self.assertEqual(msg.data, self.data[i])
self.assertEqual(msg.arbitration_id, self.ids[i])
self.assertEqual(msg.is_error_frame, self.error_flags[i])
self.assertEqual(msg.is_remote_frame, self.remote_flags[i])
i += 1
t.join()
self.server_bus.flush_tx_buffer()
self.server_bus.shutdown()
class ControllerAreaNetworkTestCase(unittest.TestCase):
"""
This test ensures that what messages go in to the bus is what comes out.
It relies on a vcan0 interface.
To ensure that hardware and/or software message priority queues don't
effect the test, messages are sent one at a time.
"""
num_messages = 512
# TODO check if error flags are working (don't currently appear on bus)
error_flags = [False for _ in range(num_messages)]
remote_flags = [rbool() for _ in range(num_messages)]
extended_flags = [rbool() for _ in range(num_messages)]
ids = list(range(num_messages))
data = list(bytearray([random.randrange(0, 2 ** 8 - 1)
for a in range(random.randrange(9))])
for b in range(num_messages))
def producer(self, ready_event, msg_read):
self.client_bus = Bus(can_interface)
ready_event.wait()
for i in range(self.num_messages):
m = Message(
arbitration_id=self.ids[i],
is_remote_frame=self.remote_flags[i],
is_error_frame=self.error_flags[i],
extended_id=self.extended_flags[i],
data=self.data[i]
)
logging.debug("writing message: {}".format(m))
#logging.debug("DATA: {}".format(self.data[i]))
# Don't send until the other thread is ready
msg_read.wait()
msg_read.clear()
self.client_bus.send(m)
def _testProducer(self):
"""Verify that we can send arbitrary messages on the bus"""
logging.debug("testing producer alone")
self.producer()
logging.debug("producer test complete")
def testProducerConsumer(self):
logging.debug("testing producer/consumer")
ready = threading.Event()
msg_read = threading.Event()
self.server_bus = Bus(can_interface)
t = threading.Thread(target=self.producer, args=(ready, msg_read))
t.start()
# Ensure there are no messages on the bus
while True:
m = self.server_bus.recv(timeout=0.5)
if m is None:
print("No messages... lets go")
break
else:
print("received messages before the test has started...")
self.assertTrue(False)
ready.set()
i = 0
while i < self.num_messages:
msg_read.set()
msg = self.server_bus.recv(timeout=0.5)
self.assertIsNotNone(msg, "Didn't receive a message")
logging.debug("Received message {} with data: {}".format(i, msg.data))
self.assertEqual(msg.id_type, self.extended_flags[i])
self.assertEqual(msg.data, self.data[i])
self.assertEqual(msg.arbitration_id, self.ids[i])
self.assertEqual(msg.is_error_frame, self.error_flags[i])
self.assertEqual(msg.is_remote_frame, self.remote_flags[i])
i += 1
t.join()
self.server_bus.flush_tx_buffer()
self.server_bus.shutdown()
class ControllerAreaNetworkTestCase(unittest.TestCase):
"""
This test ensures that what messages go in to the bus is what comes out.
It relies on a vcan0 interface.
To ensure that hardware and/or software message priority queues don't
effect the test, messages are sent one at a time.
"""
num_messages = 512
# TODO check if error flags are working (don't currently appear on bus)
error_flags = [False for _ in range(num_messages)]
remote_flags = [rbool() for _ in range(num_messages)]
extended_flags = [rbool() for _ in range(num_messages)]
ids = list(range(num_messages))
data = list(
bytearray([
random.randrange(0, 2**8 - 1) for a in range(random.randrange(9))
]) for b in range(num_messages))
def producer(self, ready_event, msg_read):
self.client_bus = Bus(can_interface)
ready_event.wait()
for i in range(self.num_messages):
m = Message(arbitration_id=self.ids[i],
is_remote_frame=self.remote_flags[i],
is_error_frame=self.error_flags[i],
extended_id=self.extended_flags[i],
data=self.data[i])
logging.debug("writing message: {}".format(m))
#logging.debug("DATA: {}".format(self.data[i]))
# Don't send until the other thread is ready
msg_read.wait()
msg_read.clear()
self.client_bus.send(m)
def _testProducer(self):
"""Verify that we can send arbitrary messages on the bus"""
logging.debug("testing producer alone")
self.producer()
logging.debug("producer test complete")
def testProducerConsumer(self):
logging.debug("testing producer/consumer")
ready = threading.Event()
msg_read = threading.Event()
self.server_bus = Bus(can_interface)
t = threading.Thread(target=self.producer, args=(ready, msg_read))
t.start()
# Ensure there are no messages on the bus
while True:
m = self.server_bus.recv(timeout=0.5)
if m is None:
print("No messages... lets go")
break
else:
print("received messages before the test has started...")
self.assertTrue(False)
ready.set()
i = 0
while i < self.num_messages:
msg_read.set()
msg = self.server_bus.recv(timeout=0.5)
self.assertIsNotNone(msg, "Didn't receive a message")
logging.debug("Received message {} with data: {}".format(
i, msg.data))
self.assertEqual(msg.id_type, self.extended_flags[i])
self.assertEqual(msg.data, self.data[i])
self.assertEqual(msg.arbitration_id, self.ids[i])
self.assertEqual(msg.is_error_frame, self.error_flags[i])
self.assertEqual(msg.is_remote_frame, self.remote_flags[i])
i += 1
t.join()
self.server_bus.flush_tx_buffer()
self.server_bus.shutdown()