Skip ASGI websocket tests on PyPy

When running on PyPy, the ASGI websocket tests sometimes hang. This is
especially annoying on CI/CD. Most likely the issue lies either in the
Starlette's TestClient implementation, or anyio it delegates to process
the request in a background thread. For a time being, it's better to
skip them for good.

.github/workflows/ci.yml

@@ -35,10 +35,6 @@ jobs:
       matrix:
         os: [ubuntu-latest, macos-latest]
         python-version: ["3.9", "3.10", "3.11", "3.12", "3.13", "pypy-3.10"]
-        exclude:
-          # The job hangs for some reason during tests execution. :(
-          - os: macos-latest
-            python-version: pypy-3.10
 
     runs-on: ${{ matrix.os }}
     steps:

tests/ext/test_asgiscopes.py

@@ -1,6 +1,7 @@
 """Test ASGI scopes."""
 
 import asyncio
+import sys
 
 import async_asgi_testclient
 import pytest
@@ -98,6 +99,9 @@ async def endpoint_ws(websocket, func=func):
 def client_factory(connection_type):
     """A factory that creates synchronous test client instances."""
 
+    if connection_type == "websocket" and sys.implementation.name == "pypy":
+        pytest.skip("When running on PyPy, the websocket tests sometimes hang.")
+
     def factory(app):
         return ClientFacade(app, connection_type)