tests/net_inet: Add tests for accept and connect in nonblocking mode.

Some of these tests don't require an Internet connection, but here is a
good place to put them for now.

1 files changed, 16 insertions, 0 deletions

diff --git a/tests/net_inet/accept_nonblock.py b/tests/net_inet/accept_nonblock.py
new file mode 100644
index 0000000000..56f3288e28
--- /dev/null
+++ b/tests/net_inet/accept_nonblock.py
@@ -0,0 +1,16 @@
+# test that socket.accept() on a non-blocking socket raises EAGAIN
+
+try:
+    import usocket as socket
+except:
+    import socket
+
+s = socket.socket()
+s.bind(socket.getaddrinfo('127.0.0.1', 8123)[0][-1])
+s.setblocking(False)
+s.listen(1)
+try:
+    s.accept()
+except OSError as er:
+    print(er.args[0] == 11) # 11 is EAGAIN
+s.close()