def test_data_representation_writer_dualreader_match():
qosv0 = Qos(Policy.DataRepresentation(use_cdrv0_representation=True))
qosv2 = Qos(Policy.DataRepresentation(use_xcdrv2_representation=True))
qosv0v2 = Qos(
Policy.DataRepresentation(use_cdrv0_representation=True,
use_xcdrv2_representation=True))
dp = DomainParticipant(0)
tp = Topic(dp, "Message", Message)
dr = DataReader(dp, tp, qos=qosv0v2)
dwv0 = DataWriter(dp, tp, qos=qosv0)
dwv2 = DataWriter(dp, tp, qos=qosv2)
msg1 = Message("Hello")
dwv0.write(msg1)
assert dr.read_next() == msg1
msg2 = Message("Hi!")
dwv2.write(msg2)
assert dr.read_next() == msg2
def test_data_representation_writer_v2_v0_unmatch():
qosv0 = Qos(Policy.DataRepresentation(use_cdrv0_representation=True))
qosv2 = Qos(Policy.DataRepresentation(use_xcdrv2_representation=True))
dp = DomainParticipant(0)
tp = Topic(dp, "Message", Message)
dr = DataReader(dp, tp, qos=qosv2)
dw = DataWriter(dp, tp, qos=qosv0)
msg = Message("Hello")
dw.write(msg)
assert dr.read_next() == None
def test_data_representation_writer_v2_match():
qos = Qos(Policy.DataRepresentation(use_xcdrv2_representation=True))
dp = DomainParticipant(0)
tp = Topic(dp, "XMessage", XMessage)
dr = DataReader(dp, tp, qos=qos)
dw = DataWriter(dp, tp, qos=qos)
assert dw._use_version_2 == True
msg = XMessage("Hello")
dw.write(msg)
assert dr.read_next() == msg
def test_reader_readnext_takenext():
dp = DomainParticipant(0)
tp = Topic(dp, "Message__DONOTPUBLISH", Message)
sub = Subscriber(dp)
pub = Publisher(dp)
dr = DataReader(sub, tp)
dw = DataWriter(pub, tp)
msg = Message("Hello")
dw.write(msg)
assert dr.read_next() == msg
assert dr.read_next() is None
dw.write(msg)
assert dr.take_next() == msg
assert dr.take_next() is None
