circuitpython/tests/extmod/uselect_poll_udp.py
David Lechner 3dc324d3f1 tests: Format all Python code with black, except tests in basics subdir.
This adds the Python files in the tests/ directory to be formatted with
./tools/codeformat.py.  The basics/ subdirectory is excluded for now so we
aren't changing too much at once.

In a few places `# fmt: off`/`# fmt: on` was used where the code had
special formatting for readability or where the test was actually testing
the specific formatting.
2020-03-30 13:21:58 +11:00

29 lines
741 B
Python

# test select.poll on UDP sockets
try:
import usocket as socket, uselect as select
except ImportError:
try:
import socket, select
except ImportError:
print("SKIP")
raise SystemExit
s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
s.bind(socket.getaddrinfo("127.0.0.1", 8000)[0][-1])
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