use poll method to fix the test

Author: NewUserHa

ipykernel/eventloops.py

@@ -451,8 +451,21 @@ def process_stream_events(shell_stream):
 
     shell_stream = get_shell_stream(kernel)
     notifier = partial(process_stream_events, shell_stream)
-    loop.add_reader(shell_stream.getsockopt(zmq.FD), notifier)
-    loop.call_soon(notifier)
+
+    if os.name=='nt':
+        stop_event=asyncio.Event()
+        def blocking_poll():
+            poller=zmq.Poller()
+            poller.register(shell_stream.socket, zmq.POLLIN)
+
+            while stop_event.is_set():
+                events=poller.poll(None)
+                if events:
+                    loop.calls_soon_threadsafe(notifier)
+        t = threading.Thread(target=blocking_poll, daemon=True).start()
+    else:
+        loop.add_reader(shell_stream.getsockopt(zmq.FD), notifier)
+        loop.call_soon(notifier)
 
     while True:
         error = None
@@ -463,6 +476,9 @@ def process_stream_events(shell_stream):
         except Exception as e:
             error = e
         if loop._should_close:  # type:ignore[attr-defined]
+            if os.name=='nt':
+                stop_event.set()
+                t.join()
             loop.close()
         if error is not None:
             raise error