Really skip this test on Windows :) (#275)

tests/functional_test/test_communication/test_async/test_server/test_tcp.py

@@ -28,6 +28,7 @@
 import pytest
 import pytest_asyncio
 
+from .....tools import PlatformMarkers
 from .base import BaseTestAsyncServer
 
 
@@ -578,7 +579,7 @@ async def test____serve_forever____accept_client(
         assert client_address not in request_handler.connected_clients
 
     # skip Windows for this test, the ECONNRESET will happen on socket.send() or socket.recv()
-    @pytest.mark.xfail('sys.platform == "win32"', reason="socket.getpeername() works by some magic")
+    @PlatformMarkers.skipif_platform_win32_because("socket.getpeername() works by some magic on Windows")
     @pytest.mark.parametrize("socket_family", ["AF_INET"], indirect=True)
     @pytest.mark.parametrize("use_ssl", ["NO_SSL"], indirect=True)
     async def test____serve_forever____accept_client____client_sent_RST_packet_right_after_accept(

tests/tools.py

@@ -17,15 +17,27 @@
 _V_co = TypeVar("_V_co", covariant=True)
 
 
-def _make_skipif_platform(platform: str) -> pytest.MarkDecorator:
-    return pytest.mark.skipif(sys.platform.startswith(platform), reason=f"cannot run on platform {platform!r}")
+def _make_skipif_platform(platform: str, reason: str) -> pytest.MarkDecorator:
+    return pytest.mark.skipif(sys.platform.startswith(platform), reason=reason)
 
 
 @final
 class PlatformMarkers:
-    skipif_platform_win32 = _make_skipif_platform("win32")
-    skipif_platform_macOS = _make_skipif_platform("darwin")
-    skipif_platform_linux = _make_skipif_platform("linux")
+    @staticmethod
+    def skipif_platform_win32_because(reason: str) -> pytest.MarkDecorator:
+        return _make_skipif_platform("win32", reason)
+
+    @staticmethod
+    def skipif_platform_macOS_because(reason: str) -> pytest.MarkDecorator:
+        return _make_skipif_platform("darwin", reason)
+
+    @staticmethod
+    def skipif_platform_linux_because(reason: str) -> pytest.MarkDecorator:
+        return _make_skipif_platform("linux", reason)
+
+    skipif_platform_win32 = skipif_platform_win32_because("cannot run on Windows")
+    skipif_platform_macOS = skipif_platform_macOS_because("cannot run on MacOS")
+    skipif_platform_linux = skipif_platform_linux_because("cannot run on Linux")
 
 
 def send_return(gen: Generator[Any, _T_contra, _V_co], value: _T_contra, /) -> _V_co: