pytest quibbles and dev dependencies.

tests/conftest.py

@@ -4,9 +4,10 @@ from lnbits.app import create_app
 
 
 @pytest.fixture
-def client():
+@pytest.mark.asyncio
+async def client():
     app = create_app()
     app.config["TESTING"] = True
 
-    with app.test_client() as client:
+    async with app.test_client() as client:
         yield client