Node JS API Unit Testing -Using Mocha Chai -Complete Project

Kick off a Node.js api project by installing Node.js, MongoDB, and Postman, initializing npm, creating app.js, wiring Express with JSON and body parsing, and preparing mocha and chai testing.

Learn how to create a router and controller in a node js api project, separate routing from controller logic, export modules, and connect endpoints like api/user for scalable code.

Connect MongoDB to your Node.js API using mongoose, dotenv, and a dedicated db.js in a model folder; configure localhost:27017/mocha-test-api and log 'database connected' on success.

design a mongoose user schema for the collection, defining name, email, age, and debt with a default, and export a mongoose model for use across the application.

Create a post user info endpoint in a Node.js API, wiring router, controller, and user schema, handling body data, validation, and 201 creation responses with Mocha and Chai testing.

Add validation for the name and email fields in the api endpoint, returning clear messages like please add your name or please add your email with proper status codes.

Define a get user info endpoint and controller to fetch all users from MongoDB, sort by debt descending, and return a 200 json list; test with postman.

Create a get single user endpoint using the request param id, query MongoDB with findOne, and return the user as json; use 404 or 200 status accordingly.

Implement a delete user endpoint by id with a delete router and controller, delete the user from MongoDB, returning 200 on success or 404 if not found.