Lesson 03 - Testing react apps
This project was bootstrapped with Create React App.
The goal
Learn how to write, fix, execute & understand tests in a React application.
Tips
Follow the Four rules of simple design
- Tests Pass - All test should always pass when you change any software
- Expresses Intent - Always reveal your intent when you write software. This means that all names, variables, methods, classes, modules...
- No Duplication (DRY)
- Small - The final rule is that all you create should be small. This means small methods, small parameter lists, small classes and small modules.
Get familiar with Jest · Painless JavaScript Testing - Facebook Code and Enzyme
Practise & learn
Fork & clone it on your machine, then in the project directory:
npm install # takes some time to complete
npm start
npm test
Useful resources:
[tutorial] Learn TDD
[online] tddbin
[videos] Test JavaScript with Jest
[article] TDD the RITE Way
[article] 5 Common Misconceptions About TDD & Unit Tests
[article] The Right Way to Test React Components
[article] Good Practices for Testing React Apps