Speed up test suite with pytest-xdist

pyproject.toml

@@ -90,7 +90,7 @@ disallow_untyped_defs = false
 check_untyped_defs = true
 
 [tool.pytest.ini_options]
-addopts = "-rxXs --strict-config --strict-markers"
+addopts = "-rxXs --strict-config --strict-markers -n 8"
 xfail_strict = true
 filterwarnings = [
     "error",

requirements.txt

@@ -17,6 +17,7 @@ twine==5.1.1
 ruff==0.7.1
 pytest==8.3.3
 pytest-mock==3.14.0
+pytest-xdist[psutil]==3.6.0
 mypy==1.13.0
 types-click==7.1.8
 types-pyyaml==6.0.12.20240917
@@ -25,6 +26,7 @@ cryptography==43.0.3
 coverage==7.6.1; python_version < '3.9'
 coverage==7.6.4; python_version >= '3.9'
 coverage-conditional-plugin==0.9.0
+coverage-enable-subprocess==1.0
 httpx==0.27.2
 watchgod==0.8.2
 

scripts/test

@@ -11,6 +11,8 @@ if [ -z $GITHUB_ACTIONS ]; then
     scripts/check
 fi
 
+export COVERAGE_PROCESS_START=$(pwd)/pyproject.toml
+
 ${PREFIX}coverage run --debug config -m pytest "$@"
 
 if [ -z $GITHUB_ACTIONS ]; then

tests/test_server.py

@@ -62,7 +62,9 @@ async def app(scope: Scope, receive: ASGIReceiveCallable, send: ASGISendCallable
 @pytest.mark.parametrize("exception_signal", signals)
 @pytest.mark.parametrize("capture_signal", signal_captures)
 async def test_server_interrupt(
-    exception_signal: signal.Signals, capture_signal: Callable[[signal.Signals], ContextManager[None]]
+    exception_signal: signal.Signals,
+    capture_signal: Callable[[signal.Signals], ContextManager[None]],
+    unused_tcp_port: int,
 ):  # pragma: py-win32
     """Test interrupting a Server that is run explicitly inside asyncio"""
 
@@ -71,7 +73,7 @@ async def interrupt_running(srv: Server):
             await asyncio.sleep(0.01)
         signal.raise_signal(exception_signal)
 
-    server = Server(Config(app=dummy_app, loop="asyncio"))
+    server = Server(Config(app=dummy_app, loop="asyncio", port=unused_tcp_port))
     asyncio.create_task(interrupt_running(server))
     with capture_signal(exception_signal) as witness:
         await server.serve()