micropython: add micropython component

components/language/micropython/tests/extmod/uselect_poll_udp.py

@@ -0,0 +1,30 @@
+# test select.poll on UDP sockets
+
+try:
+    import usocket as socket, uselect as select
+except ImportError:
+    try:
+        import socket, select
+
+        select.poll  # Raises AttributeError for CPython implementations without poll()
+    except (ImportError, AttributeError):
+        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