👀 Views: 31 💬 Answers: 1 📅 Created: 2025-06-17

mocha chai async-await JavaScript

I'm wondering if anyone has experience with I'm attempting to set up I'm working with an scenario while trying to test an asynchronous function in my Node.js application using Mocha and Chai. My function makes a database call and returns a promise, but when I try to test it, the promise resolves unexpectedly before the assertions are made. Here's a simplified version of my code: ```javascript // myFunction.js const db = require('./db'); async function fetchData(id) { const data = await db.getDataById(id); return data; } module.exports = fetchData; ``` ```javascript // test.js const fetchData = require('./myFunction'); const chai = require('chai'); const expect = chai.expect; describe('fetchData', () => { it('should return data for a valid ID', async () => { const id = 1; const data = await fetchData(id); expect(data).to.deep.equal({ id: 1, name: 'Test Data' }); }); }); ``` I'm using Mocha version 8.4.0 and Chai 4.3.4. When I run the tests, I sometimes get the following behavior: ``` behavior: expected { id: 1, name: 'Test Data' } to deeply equal { id: 1, name: 'Test Data' } ``` It seems like the test fails intermittently and I need to figure out why. I've verified that the database mock returns the expected result, and even tried adding a delay to the assertion just to see if that helps, but the issues continue. Could this be related to how Mocha handles asynchronous tests, or am I possibly missing an important detail with the Promise resolution? Any help would be appreciated! The stack includes Javascript and several other technologies. I'm using Javascript stable in this project.