Jest and Enzyme Testing Course | DevelopIntelligence

Course Summary

The Jest and Enzyme Testing course is designed to provide a comprehensive training on testing with Jest and Enzyme.

This course begins with an introduction to both Jest and Enzyme including a review of class architecture, test applications and using Jest and Enzyme to validate accessibility requirements. Students will then explore how to do tests, code coverage, and snapshots. The course concludes with a dive into test mocking, shallow rendering of components, and full rendering.

This course uses a mixture of lecture and hands-on labs to reinforce learning.

Purpose

Learn the workings of the Jest testing framework along with the testing utility Enzyme.

Audience

Web Developers and Q/As looking to adopt Jest and Enzyme.

Role

Q/A - Software Developer - Web Developer

Skill Level

Intermediate

Style

Workshops

Duration

2 Days

Related Technologies

JavaScript

Testing

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Productivity Objectives:

Use Jest for basic testing
Test asynchronous functionality with Jest
Set up and work with Enzyme
Use Enzyme to test React components
Compare shallow and full rendering of components in Enzyme
Establish code coverage in testing

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about our training

Real-World Content

Project-focused demos and labs using your tool stack and environment, not some canned "training room" lab.
Expert Practitioners

Industry experts with 15+ years of industry experience that bring their battle scars into the classroom.
Experiential Learning

More coding than lecture, coupled with architectural and design discussions.
Fully Customized

One-size-fits-all doesn't apply to training teams. That's where we come in!

What You'll Learn

In the Jest and Enzyme Testing training course, you'll learn:

Class Architecture
- React with create-react-app
- Enzyme
- Jest
- Node
- VSCode
- Other tools
Test Application
- Front-end with React
- Simple back-end
- Focusing on unit testing components
Starting with Jest
- Using Jest/Enzyme to validate accessibility requirements
- Running tests under Jest
- Jest Testing Outline
  - Discover()
  - It() / test()
  - Running code before and after tests
- Matchers
- Reporters
Code Coverage
- What is code coverage?
- Snapshots
Test Mocking
- Unit testing vs integration testing
- Mocks help maintain boundaries
- Mocking components
- Mocking functions
- Asynchronous functions
- To mock, or not to mock?
Enzyme and shallow rendering
- Role of Enzyme
  - Enzyme vs Jest, Enzyme with Jest
- Enzyme Configuration
- Shallow rendering of a component
Full rendering
- Unit vs integration testing re-visited
- When should I use full rendering?
- The full API vs the shallow API
- Accessing subcomponents in a full render
Putting it all together
- Capstone Lab Exercise