CI: Run unit tests on Windows

.github/codecov.yml

@@ -1,7 +1,7 @@
 comment:
   require_changes: false  # Always show messages if codecov is triggered
   layout: "flags"  # Only show coverage by flags
-  after_n_builds: 8  # nb_tested_python_version(==2) * (nb_tested_platforms(==3) + nb_unit_test_runs(==1))
+  after_n_builds: 10  # nb_tested_python_version(==2) * (nb_functional_test_runs(==3) + nb_unit_test_runs(==2))
 coverage:
   status:
     project:

.github/workflows/test.yml

@@ -43,10 +43,11 @@ jobs:
     if: |
       (github.event_name != 'push' || !startsWith(github.event.head_commit.message, 'Bump version:'))
       && (github.event_name != 'pull_request' || github.event.pull_request.draft != true)
-    runs-on: ubuntu-22.04
+    runs-on: ${{ matrix.os }}
     strategy:
       fail-fast: false
       matrix:
+        os: [ubuntu-22.04, windows-2022]
         python_version: ['3.11', '3.12']
 
     steps:

src/easynetwork/lowlevel/asyncio/backend.py

@@ -90,11 +90,7 @@ def get_cancelled_exc_class(self) -> type[BaseException]:
     async def ignore_cancellation(self, coroutine: Coroutine[Any, Any, _T_co]) -> _T_co:
         if not asyncio.iscoroutine(coroutine):
             raise TypeError("Expected a coroutine object")
-        if sys.version_info >= (3, 12):
-            context = TaskUtils.current_asyncio_task().get_context()
-        else:
-            context = None
-        return await TaskUtils.cancel_shielded_await_task(asyncio.create_task(coroutine, context=context))
+        return await TaskUtils.cancel_shielded_await_task(asyncio.create_task(coroutine))
 
     def open_cancel_scope(self, *, deadline: float = math.inf) -> CancelScope:
         return CancelScope(deadline=deadline)

tests/functional_test/test_async/test_backend/test_asyncio_backend.py

@@ -131,21 +131,6 @@ async def self_cancellation() -> None:
             await task
         assert task.cancelled()
 
-    @pytest.mark.xfail("sys.version_info < (3, 12)", reason="asyncio.Task.get_context() does not exist before Python 3.12")
-    async def test____ignore_cancellation____share_same_context_with_host_task(
-        self,
-        backend: AsyncIOBackend,
-    ) -> None:
-        async def coroutine() -> None:
-            await asyncio.sleep(0.1)
-
-            cvar_for_test.set("after_in_coroutine")
-
-        cvar_for_test.set("before_in_current_task")
-        await backend.ignore_cancellation(coroutine())
-
-        assert cvar_for_test.get() == "after_in_coroutine"
-
     async def test____timeout____respected(
         self,
         backend: AsyncIOBackend,

tests/unit_test/test_async/test_asyncio_backend/test_stream.py

@@ -32,6 +32,7 @@
 
     from pytest_mock import MockerFixture
 
+from ....tools import PlatformMarkers
 from ...base import BaseTestSocket
 
 
@@ -530,6 +531,7 @@ async def test____serve____connect____error_raised(
                     exc,
                 )
 
+    @PlatformMarkers.skipif_platform_win32
     @pytest.mark.parametrize("errno_value", sorted(ACCEPT_CAPACITY_ERRNOS), ids=errno_errorcode.__getitem__)
     async def test____serve____accept_capacity_error(
         self,