Tengo un archivo de prueba llamado integration.test.js

 import app from "../app"; import request from "supertest"; describe("testing /users", () => { const app = request(app); // 5 test cases here. Both use app for api testing }) describe("testing /images", () => { const app = request(app); // 6 test cases here. Both use app for api testing }) describe("testing /blogs", () => { const app = request(app); // 7 test cases here. Both use app for api testing })

Cuando ejecuto jest para ejecutar los casos de prueba, devuelve una advertencia

 A worker process has failed to exit gracefully and has been force exited. This is likely caused by tests leaking due to improper teardown. Try runn ing with --detectOpenHandles to find leaks. Active timers can also cause this, ensure that .unref() was called on them.

También toma alrededor de 5 segundos completar la prueba, lo que parece ser lento.

¿Cómo puedo corregir la advertencia y el tiempo de ejecución de los casos de prueba?

aplicación.js

 import express from "express"; const app = express(); const PORT = process.env.PORT || 3000; app.use(express.json()); app.get("/", (req, res) => { res.status(200).send("Hello"); }); app.post("/users", (req, res) => {...}); app.post("/images", (req, res) => {...}); app.post("/blogs", (req, res) => {...}); app.listen(PORT, () => { console.log(`Server running on ${PORT}`); }); export default app;