tests: rely on pytest-asyncio

pyproject.toml

@@ -57,6 +57,7 @@ dependencies = [
 [project.optional-dependencies]
 test = [
     "pytest",
+    "pytest-asyncio",
     "pytest-cov",
     "pytest-html",
 ]
@@ -195,21 +196,33 @@ src = "pyproject.toml"
 [[tool.tbump.file]]
 src = "labextension/package.json"
 
+
+# pytest is used for running Python based tests
+#
+# ref: https://docs.pytest.org/en/stable/
+#
 [tool.pytest.ini_options]
-cache_dir = "build/.cache/pytest"
-testpaths = ["tests"]
 addopts = [
-    "-vv",
+    "--verbose",
+    "--durations=10",
+    "--color=yes",
     "--cov=jupyter_server_proxy",
     "--cov-branch",
     "--cov-context=test",
     "--cov-report=term-missing:skip-covered",
     "--cov-report=html:build/coverage",
     "--no-cov-on-fail",
     "--html=build/pytest/index.html",
-    "--color=yes",
 ]
+asyncio_mode = "auto"
+testpaths = ["tests"]
+cache_dir = "build/.cache/pytest"
 
+
+# pytest-cov / coverage is used to measure code coverage of tests
+#
+# ref: https://coverage.readthedocs.io/en/stable/config.html
+#
 [tool.coverage.run]
 data_file = "build/.coverage"
 concurrency = [

tests/test_proxies.py

@@ -1,4 +1,3 @@
-import asyncio
 import gzip
 import json
 import sys
@@ -332,14 +331,9 @@ def test_server_content_encoding_header(
         assert f.read() == b"this is a test"
 
 
-@pytest.fixture(scope="module")
-def event_loop():
-    loop = asyncio.get_event_loop()
-    yield loop
-    loop.close()
-
-
-async def _websocket_echo(a_server_port_and_token: Tuple[int, str]) -> None:
+async def test_server_proxy_websocket_messages(
+    a_server_port_and_token: Tuple[int, str]
+) -> None:
     PORT = a_server_port_and_token[0]
     url = f"ws://{LOCALHOST}:{PORT}/python-websocket/echosocket"
     conn = await websocket_connect(url)
@@ -349,13 +343,7 @@ async def _websocket_echo(a_server_port_and_token: Tuple[int, str]) -> None:
     assert msg == expected_msg
 
 
-def test_server_proxy_websocket(
-    event_loop, a_server_port_and_token: Tuple[int, str]
-) -> None:
-    event_loop.run_until_complete(_websocket_echo(a_server_port_and_token))
-
-
-async def _websocket_headers(a_server_port_and_token: Tuple[int, str]) -> None:
+async def test_server_proxy_websocket_headers(a_server_port_and_token: Tuple[int, str]):
     PORT = a_server_port_and_token[0]
     url = f"ws://{LOCALHOST}:{PORT}/python-websocket/headerssocket"
     conn = await websocket_connect(url)
@@ -366,13 +354,9 @@ async def _websocket_headers(a_server_port_and_token: Tuple[int, str]) -> None:
     assert headers["X-Custom-Header"] == "pytest-23456"
 
 
-def test_server_proxy_websocket_headers(
-    event_loop, a_server_port_and_token: Tuple[int, str]
+async def test_server_proxy_websocket_subprotocols(
+    a_server_port_and_token: Tuple[int, str]
 ):
-    event_loop.run_until_complete(_websocket_headers(a_server_port_and_token))
-
-
-async def _websocket_subprotocols(a_server_port_and_token: Tuple[int, str]) -> None:
     PORT, TOKEN = a_server_port_and_token
     url = f"ws://{LOCALHOST}:{PORT}/python-websocket/subprotocolsocket"
     conn = await websocket_connect(url, subprotocols=["protocol_1", "protocol_2"])
@@ -381,12 +365,6 @@ async def _websocket_subprotocols(a_server_port_and_token: Tuple[int, str]) -> N
     assert json.loads(msg) == ["protocol_1"]
 
 
-def test_server_proxy_websocket_subprotocols(
-    event_loop, a_server_port_and_token: Tuple[int, str]
-):
-    event_loop.run_until_complete(_websocket_subprotocols(a_server_port_and_token))
-
-
 @pytest.mark.parametrize(
     "proxy_path, status",
     [