circuitpython/tests/extmod/select_poll_udp.py
Damien George 218242d1de tests/extmod: Skip select/socket tests if they can't create UDP socket.
Some targets (eg PYBV10) have the socket module but are unable to create
UDP sockets without a registered NIC.  So skip UDP tests on these targets.

Signed-off-by: Damien George <damien@micropython.org>
2023-08-07 12:39:29 +10:00

32 lines
819 B
Python

# test select.poll on UDP sockets
try:
import socket, select
select.poll # Raises AttributeError for CPython implementations without poll()
except (ImportError, AttributeError):
print("SKIP")
raise SystemExit
try:
s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
s.bind(socket.getaddrinfo("127.0.0.1", 8000)[0][-1])
except OSError:
print("SKIP")
raise SystemExit
poll = select.poll()
# UDP socket should not be readable
poll.register(s, select.POLLIN)
print(len(poll.poll(0)))
# UDP socket should be writable
poll.modify(s, select.POLLOUT)
print(poll.poll(0)[0][1] == select.POLLOUT)
# same test for select.select, but just skip it if the function isn't available
if hasattr(select, "select"):
r, w, e = select.select([s], [], [], 0)
assert not r and not w and not e