NodeJS Rest-ExpressJS Mongodb-Jest javascript Unit/Int Test

Build a restful employee management web server with endpoints for create, delete, get by id, get all, update, and login. Develop within an agile two-week sprint on a local server.

Set up a web server with the Express framework by initializing an npm project, installing express, creating an app.js, defining an endpoint, and starting the server to respond to requests.

Learn to use postman to send http requests to a local express server, create an employee project collection, add requests, and receive a hello response.

Set up and route rest endpoints for an employee api using express, exporting modules and handling requests with proper status responses. Learn to auto-restart with nodemon for efficient development.

Build an employee management API with MongoDB as the database, implementing create, get, update, delete endpoints, along with unit and integration tests using Jest, in Node.js with Express.

Set up a free MongoDB server in the cloud on AWS, choose northern Virginia, and learn to create a cluster with 512 MB storage for your app.

Set up a MongoDB server connection by creating a user, whitelisting your IP, and copying the connection string to connect your application, then explore creating databases and collections.

Implement MongoDB utility functions using Mongoose to connect, disconnect, and drop collections, exporting reusable helpers for robust database operations in a Node.js rest-express app and tests.

Define a Mongoose schema and model for a MongoDB collection, with fields like name (string), age (integer), date, and password (min length 6), plus an optional phone number.

Implement a create employee endpoint by wiring a Mongoose model and handling a post request to store a new employee in the database.

Learn to improve the create employee endpoint by validating input with a schema, enforcing required fields like password and unique email, and hashing passwords with bcrypt before storing in MongoDB.

Implement a get all employees endpoint in a Node.js Express API using Mongoose to fetch all employees and return a 200 response with the list.

Implement a get employee by id endpoint in a node.js express app using mongodb, returning 200 with the employee payload or 404 if not found, and 500 on error.

Learn how to implement an update employee endpoint in a nodejs express app using mongoose, updating by id with the request payload, handling errors, and testing with postman.

Implement a delete employee endpoint using MongoDB with promises, performing find by id and delete, returning the deleted employee details on success and handling not found or server errors.

This lecture demonstrates getting an employee by id in mongoose using a callback, contrasts with promises, and shows how to respond with status 200 or 500.

Implement an employee login endpoint using Express, validating email and password, checking user existence in the database, comparing hashed passwords with bcrypt, and returning a token on success.

Secure api endpoints by issuing a jwt token on employee login and validating it with middleware for protected updates, using a secret key and token expiration.

Learn to secure secrets by loading environment variables with dotenv and cross-env, avoiding hard-coded values and enabling environment-specific databases and collections.

Learn how unit testing validates the smallest software units with mocks and test cases. Explore integration testing to verify end-to-end system behavior using frameworks like Jest to boost confidence.

Begin by testing all functions in the controls with a testing framework, create test data, and set up the first unit test file under the test folder.

Practice building unit tests for the GetEmployeeByID function in a node express MongoDB app, using test cases, expect assertions, and Mongoose integration to validate controller behavior.

Unit test the get employee by id flow by mocking the employee model, supplying a fake request and response, and asserting a 200 status with valid employee data.

Demonstrate building a unit/integration test for the getemployee by id endpoint in a nodejs rest-express app using jest, including mocking dependencies and asserting not found responses.

Explore building and validating a get-employee-by-id unit test by mocking find by id, forcing exceptions, and ensuring the endpoint returns 500 or 200 with properly formatted data.

Test the get all employees endpoint in a NodeJS Rest-ExpressJS MongoDB app by mocking the find function and asserting a 200 response with the full employee list.

Learn how to test the get all employees endpoint using mocked database responses, verify empty results, handle errors, and debug unit tests in a Node.js, Express, MongoDB setup with Jest.

Learn to unit test the update employee by id flow in a Node.js Express app with Mongoose, using mock data, beforeEach setup, and controller validation to ensure correct responses.

Practice testing the update by id flow in a Node.js rest app with Express and MongoDB, covering 400 and 500 errors and validating update and delete tests with Jest.

Test delete employee by id in a NodeJS express app using a controller and model mocks. Explore success and error scenarios with promises and Jest-based unit tests.

Learn to write unit tests for a NodeJS REST app by testing the create employee flow in the controller, using mocks, schema validation, hashing, and proper HTTP status handling.

Develop unit and integration tests for the login employee flow in a Node.js rest express app, using JWT, password hashing, and mocks to validate outcomes.

Demonstrate end-to-end integration testing of a Node.js express API using supertest, including setting up the server, connecting to MongoDB, exporting the app, and asserting endpoint responses.

This lecture demonstrates integration testing of Node.js rest endpoints with Express and MongoDB using Jest, focusing on positive scenarios for create, get, update, delete, and login flows.

Learn to design integration tests with negative scenarios in a Node.js Express MongoDB setup, using before/after hooks, DB cleanup, and 400/404/500 failures for create and login.

Learn how to test a private function in Jest by stubbing and mocking with a Babel plugin, using a private function B and a public function A.

Explore how to test class methods with jest by creating a class instance, mocking methods with mockImplementation, and controlling return values for unit tests.

Learn to measure JavaScript unit test coverage with Istanbul and generate HTML test reports, then create desk reports to share test results with management.

Leverage mutation testing to gauge unit test health by injecting code mutations and observing which tests fail. Learn to configure, run, and interpret stryker mutation reports to improve coverage.

Explore the Jest testing framework, write unit tests with mock functions, and configure test environments with setup files to use assertions, snapshots, and efficient test practices.