diff --git a/tests/test_app.py b/tests/test_app.py
index 343a1629..4b2e55a1 100644
--- a/tests/test_app.py
+++ b/tests/test_app.py
@@ -10,14 +10,17 @@
 
 
 @pytest.mark.asyncio
-@pytest.mark.parametrize("mount_path", (None, "/foo",))
+@pytest.mark.parametrize(
+    "mount_path",
+    (
+        None,
+        "/foo",
+    ),
+)
 async def test_mount_path(mount_path, unused_tcp_port):
-    components = configure(
-        {"app": {"type": "app"}},
-        {"app": {"mount_path": mount_path}}
-    )
+    components = configure({"app": {"type": "app"}}, {"app": {"mount_path": mount_path}})
 
-    async with Context() as ctx, AsyncClient(follow_redirects=True)as http:
+    async with Context() as ctx, AsyncClient(follow_redirects=True) as http:
         await JupyverseComponent(
             components=components,
             port=unused_tcp_port,