Fix the monitor errors test on Windows and hide unhelpful warnings there

setup.cfg

@@ -101,6 +101,8 @@ log_file_level   = DEBUG
 # Unraisable exceptions are filtered because PyTest yields false-positives coming from PyCyphal.
 addopts          = --doctest-modules -v -p no:unraisableexception
 asyncio_mode     = auto
+filterwarnings =
+    ignore:.*SDL2.*:UserWarning
 
 # ---------------------------------------- MYPY ----------------------------------------
 [mypy]

tests/cmd/monitor.py

@@ -290,10 +290,13 @@ async def _run_zombie() -> None:
     pres = pycyphal.presentation.Presentation(tr)
     try:
         pub = pres.make_publisher(Empty_1, 99)
+        pub.send_timeout = 5.0
+        sub = pres.make_subscriber(Empty_1, 99)  # Ensure there's an RX socket on Windows.
         while True:
-            await pub.publish(Empty_1())
+            assert await pub.publish(Empty_1())
             await asyncio.sleep(0.5)
-    except (asyncio.TimeoutError, asyncio.CancelledError):  # pragma: no cover
+            _ = await sub.receive_for(0.0)  # Avoid queue overrun.
+    except (asyncio.TimeoutError, asyncio.CancelledError, GeneratorExit):  # pragma: no cover
         pass
     finally:
         pres.close()

yakut/__main__.py

@@ -3,6 +3,10 @@
 # Author: Pavel Kirienko <[email protected]>
 
 if __name__ == "__main__":
+    from warnings import filterwarnings
+
+    filterwarnings("ignore")  # Warnings are meant for developers and should not be shown to users.
+
     from yakut import main
 
     main()  # pylint: disable=no-value-for-parameter