tests/net_hosted: Add test for socket connect() and poll() behaviour.

tests/net_hosted/connect_poll.py

+# test that socket.connect() has correct polling behaviour before, during and after
+
+try:
+    import usocket as socket, uselect as select
+except:
+    import socket, select
+
+
+def test(peer_addr):
+    s = socket.socket()
+    poller = select.poll()
+    poller.register(s)
+
+    # test poll before connect
+    # note: CPython can return POLLHUP, so use the IN|OUT mask
+    p = poller.poll(0)
+    print(len(p), p[0][-1] & (select.POLLIN | select.POLLOUT))
+
+    s.connect(peer_addr)
+
+    # test poll during connection
+    print(len(poller.poll(0)))
+
+    # test poll after connection is established
+    p = poller.poll(1000)
+    print(len(p), p[0][-1])
+
+    s.close()
+
+
+if __name__ == "__main__":
+    test(socket.getaddrinfo('micropython.org', 80)[0][-1])

tests/net_hosted/connect_poll.py.exp

+1 4
+1
+1 4