Fix coverage for `docs_src.path_params.tutorial003b`

tests/test_tutorial/test_path_params/test_tutorial003b.py

@@ -1,6 +1,8 @@
+import asyncio
+
 from fastapi.testclient import TestClient
 
-from docs_src.path_params.tutorial003b_py39 import app
+from docs_src.path_params.tutorial003b_py39 import app, read_users2
 
 client = TestClient(app)
 
@@ -11,6 +13,10 @@ def test_get_users():
     assert response.json() == ["Rick", "Morty"]
 
 
+def test_read_users2():  # Just for coverage
+    assert asyncio.run(read_users2()) == ["Bean", "Elfo"]
+
+
 def test_openapi_schema():
     response = client.get("/openapi.json")
     assert response.status_code == 200, response.text