Test vanilla event loop windows

src/synchronicity/synchronizer.py

@@ -8,7 +8,6 @@
 import functools
 import inspect
 import os
-import platform
 import threading
 import types
 import typing
@@ -106,12 +105,6 @@ def __init__(
         self._owner_pid = None
         self._stopping = None
 
-        if platform.system() == "Windows":
-            # default event loop policy on windows spits out errors when
-            # closing the event loop, so use WindowsSelectorEventLoopPolicy instead
-            # https://stackoverflow.com/questions/45600579/asyncio-event-loop-is-closed-when-getting-loop
-            asyncio.set_event_loop_policy(asyncio.WindowsSelectorEventLoopPolicy())
-
         # Special attribute we use to go from wrapped <-> original
         self._wrapped_attr = "_sync_wrapped_%d" % id(self)
         self._original_attr = "_sync_original_%d" % id(self)

test/gevent_test.py

@@ -5,6 +5,9 @@
 
 
 @pytest.mark.skipif(sys.version_info >= (3, 13), reason="gevent seems broken on Python 3.13")
+@pytest.mark.skipif(
+    sys.platform == "win32", reason="gevent support broken on Windows, probably due to event loop patching"
+)
 def test_gevent():
     # Run it in a separate process because gevent modifies a lot of modules
     fn = Path(__file__).parent / "support" / "_gevent.py"

test/shutdown_test.py

@@ -41,9 +41,7 @@ def test_shutdown():
         p.stdout.readline() == "keyboard interrupt\n"
     )  # we want the keyboard interrupt to come *after* the running function has been cancelled!
 
-    stderr_content = p.stderr.read()
-    print("stderr:", stderr_content)
-    assert "Traceback" not in stderr_content
+    assert p.stderr.read().strip() == ""
 
 
 def test_keyboard_interrupt_reraised_as_is(synchronizer):