Name: Nodejs Express - unit testing/integration tests with Jest
Price: 9 USD
Availability: InStock

Nodejs Express - unit testing/integration tests with Jest

Master the art of writing a full CRUD REST API using Node.js, Express, and Jest with the test-driven development (TDD) method! TDD is rapidly becoming a standard in software development for its ability to ensure safe and secure changes without breaking existing functionality. Manual testing is unsustainable for medium to large applications and can be extremely tedious.

Course Overview

Without TDD, changes can lead to unintentional breakages as developers hesitate to modify existing code. With TDD, you gain the confidence to execute significant code refactoring and clean-ups without fear. This course will guide you step-by-step in creating a REST API using Express with unit and integration tests powered by the Jest framework. You will have multiple opportunities to engage in hands-on exercises to enhance your learning.

Instructor Support

If you have any questions or suggestions regarding the course, feel free to reach out. I enjoy interacting with my students and am here to help you succeed!

Target Audience

Who this course is for:

Students familiar with Node.js seeking to create production-ready software using TDD

Course Requirements

Requirements:

Basic knowledge of JavaScript ES6
Some familiarity with Node.js Express is beneficial

Learning Objectives

What you'll learn:

How to create unit tests
How to perform integration tests
How to build an Express REST API from scratch
How to develop an Express REST API using test-driven development
How to mock Mongoose models in Node.js with Jest
How to leverage Jest with TDD to build a REST API
How to integrate MongoDB with Mongoose and Jest tests
How to write tests for error handling

About the Author: udemy

By connecting students all over the world to the best instructors, Udemy is helping individuals reach their goals and pursue their dreams. Udemy is the leading global marketplace for teaching and learning, connecting millions of students to the skills they need to succeed. Udemy helps organizations of all kinds prepare for the ever-evolving future of work. Our curated collection of top-rated business and technical courses gives companies, governments, and nonprofits the power to develop in-house expertise and satisfy employees’ hunger for learning and development.

Watch Online 61 lessons

0:00

#1: Initialising project

All Course Lessons (61)

#	Lesson Title	Duration
1	Initialising project Demo	01:19
2	Hello World Express REST API in less than 5 mins!	03:51
3	CRUD Methods we are going to build the TDD-way in REST	01:31
4	Short intro to Jest + How to install Jest in our project	00:40
5	Our first test with Jest and Express REST API	03:56
6	Making our first test with Jest + Express REST API pass!	01:17
7	Make Jest run automatically on file changes	01:22
8	Defining a data model for our Todo items with Mongoose	03:28
9	Using jest.fn to mock our Mongoose model functions	04:05
10	Making our test with Jest mock model pass	01:41
11	How to configure Jest test environment	01:29
12	How to mock Request and Response objects in Express API	03:23
13	Writing test with mock Request object and making it pass!	02:46
14	Using beforeEach in Jest tests	01:18
15	Testing if response code is 201 and response is sent	02:37
16	Test if response is sending back JSON body	04:48
17	Creating our first integration test with Supertest and Jest	06:36
18	How to make our Express app ready for integration testing	01:50
19	Creating our Express Router	03:16
20	How to debug tests in Jest	02:09
21	Setting up Express JSON request body middleware	01:01
22	Fix for address already in use error	01:05
23	Making our controller function use async/await	03:01
24	Setting up our MongoDB database in the cloud!	02:04
25	Creating a MongoDB database user	01:25
26	Connect to MongoDB database with Mongoose	03:18
27	Modify our unit tests to use async/await	03:30
28	Creating a server.js for running our Express REST API manually	02:09
29	Manual Testing with Postman	03:06
30	Oops! We're missing error handling!	02:56
31	Unit tests for error handling	03:17
32	Making our error handling unit test PASS	00:55
33	Creating a integration test for error handling	01:42
34	Manual test for error handling	01:15
35	Making a test for errors returning JSON body	00:48
36	Create middleware to parse errors in JSON	02:31
37	Making all of our tests pass and final manual test!	02:03
38	Intro + first test exercise	01:27
39	Making first test for getTodos pass	01:37
40	Test if TodoModel.find is called	03:23
41	Test if response is being sent back correctly	04:34
42	Test for error handling	03:48
43	Integration test for GET /todos	03:59
44	Manual test with Postman	00:57
45	Intro + Getting first test done	02:43
46	Creating mock function TodoModel.findById and test for calls	03:15
47	Exercise! Make test for response and make test pass!	01:44
48	Solution to response testing with getById()	04:20
49	Error handling unit test	02:54
50	If TodoModel could not be found in database	02:31
51	Integration test for GET /todos/:todoId	03:58
52	404 Integration test + final manual tests	03:08
53	Intro to PUT method and first test	01:07
54	Test if TodoModel.findByIdAndUpdate is called	04:50
55	Test if PUT response is sent back	03:07
56	Test HTTP PUT error handling	02:18
57	HTTP PUT 404 test	02:10
58	HTTP PUT Integration test	03:59
59	Using Jest.mock instead of multiple Jest.fn + Intro to final challenge!	02:59
60	Unit tests for HTTP Delete method	08:15
61	Integration test for HTTP Delete Method + manual test + you are awesome!!	06:12

Unlock unlimited learning

Get instant access to all 60 lessons in this course, plus thousands of other premium courses. One subscription, unlimited knowledge.

Learn more about subscription