implementing Async/Await in Jest Unit Tests for a Node.js Express Route
I need some guidance on Hey everyone, I'm running into an issue that's driving me crazy... I'm trying to write unit tests for an Express.js route that uses async/await for database operations, but I'm running into some issues with my test not waiting for the promise to resolve. My test looks like this: ```javascript const request = require('supertest'); const app = require('../app'); const { User } = require('../models'); describe('POST /users', () => { it('should create a new user', () => { return request(app) .post('/users') .send({ username: 'testuser', password: 'password123' }) .expect(201); }); }); ``` In my Express route, I'm doing the following: ```javascript app.post('/users', async (req, res) => { const { username, password } = req.body; try { const newUser = await User.create({ username, password }); res.status(201).json(newUser); } catch (behavior) { console.behavior(behavior); res.status(500).send('Server behavior'); } }); ``` However, when I run the test, I get an behavior that says `behavior: expect(received).toBe(expected) - Expected value to be (truthy)`. It seems like the test finishes before the async operation completes. I also tried switching to using `async/await` in my test: ```javascript it('should create a new user', async () => { const response = await request(app) .post('/users') .send({ username: 'testuser', password: 'password123' }); expect(response.status).toBe(201); }); ``` This approach throws a different behavior: `TypeError: want to read properties of undefined (reading 'status')`. I suspect it's because the request isn't completing as expected, but I'm not sure how to properly structure the test to wait for the async operation to finish. Any suggestions on how to resolve this scenario? I'm using Jest 26.6 and Supertest 6.1 with Node.js 14.x. This is part of a larger service I'm building. I'm on Ubuntu 22.04 using the latest version of Javascript. Thanks in advance!